Detailed Information

Research Field/Keywords for Research Field

• microwave circuit, antenna, wireless system, wireless power transfer

Education

• 1985/03, Graduated
• 1987/03, Master Course, Completed
• 1990/03, Doctor Course, Completed

Employment Experience

• 1990/04 - 1994/01 Technical Staff
• 1994/02 - 1996/02
• 1996/03 - 1997/11 Chief Researcher
• 1997/12 - 2001/03
• 2001/04 - 2011/03 Chief Researcher
• 2004/05 - 2007/03
• 2007/04 - 2011/09
• 2007/06 - 2009/12
• 2011/04 - 2018/03 Professor, Electrical and Electronic Engineering , Graduate School of Science and Engineering, Saga University
• 2017/04 - 2018/03 Saga University
• 2017/10 - 2019/09 Saga University
• 2017/10 - 2019/09 Saga University
• 2017/10 - 2019/09 Saga University
• 2018/04 -  *  Professor, Faculty of Science and Engineering, Saga University
• 2018/04 - 2019/09 Faculty of Science and Engineering, Saga University
• 2019/10 - 2023/09 Dean, Faculty of Science and Engineering, Saga University
• 2023/10 -  *  Director, Saga University

Field of Specialization

• Communication/Network engineering, Electron device/Electronic equipment, Computational science, Energy engineering

Membership in Academic Societies

• Institute of Electrical and Electronics Engineers, European Microwave Association (EuMA)

Awards

• 3rd Best Paper Award in ICTP2021 （2022/03）
• Best paper award in ICETC2021 （2021/12）
• Best paper award in ICSCT2021 （2021/08）
• 電気学会　2020年電子・情報・システム部門誌　優秀論文賞 （2020/09）
• 電子情報通信学会　平成28年度論文賞 （2017/06）
• 電子情報通信学会　論文賞 （2011/05）
• First Prize for Propagation and Antenna Measurements （2010/04）
• エレクトロニクスソサイエティ功労感謝状 （2008/03）
• エレクトロニクスソサイエティ賞 （2006/09）
• テレコムシステム技術賞 （2003/03）
• Japan Microwave Prize （1994/12）
• 電子情報通信学会　学術奨励賞 （1994/03）
• Best Paper Award (Gold) in APCAP2019 （2019/08）
• Dr. Fatema Rashid Best Paper Award in ICPRSET2022 （2022/12）
• Dr. Fatema Rashid Best Paper Award in ECCE2023 （2023/02）
• Best Paper Award – Telecommunication in ICTP2023 （2023/12）

Research Topics and Results

• Simple Integration of Cavity-Backed Antenna with Patch Antenna for Developing Hybrid Antenna Using SIW Technology 2024/02
• A phase Shift keying modulator integrated single-feed circular polarization agile array antenna 2024/01
• A penta-band microstrip slot antenna for S-, C- and X-band applications 2023/12
• An Image-Rejection Active Integrated Antenna Utilizing Dual-Feed Circularly Polarized Antenna 2023/12
• A Dual-Band Polarization-Switchable Stacked Microstrip Antenna Loading Cross Slot and Diodes 2023/12
• A Branch-Line Coupler Feed MIMO Antenna for Circular Polarization Diversity 2023/12
• Design of Dual Circularly Polarized Array Antenna with Beam Switching Functionality Using Hybrid Coupler and Phase Shifters 2023/11
• A High-Gain Microstrip Antenna Loading Parasitic Element and Horn-Shaped Reflector 2023/10
• A Single-Feed Array Antenna With Sum- and Difference-Patterns Using Planar Magic-Ts 2023/10
• A Reconfigurable Circularly Polarized Electrically Activated Split-Ring Slot Antenna With Simple Bias Decoupling Feed Network 2023/10
• A Reconfigurable Circularly-Polarized Microstrip Antenna With Simple Two-Branch Switchable Feed Network 2023/10
• A Quad-Polarization and Beam Agile Array Antenna Using Rat-Race Coupler and Switched-Line Phase Shifter 2023/09
• An Electrically Reconfigurable Circularly-Polarized Planar Array Antenna With Built-In Bias-Isolation Mechanism 2023/09
• A tri-state SPDT switch using shunt open-end stub resonator for X-band applications 2023/07
• Three-state pattern reconfigurable active antenna integrated with Gunn oscillator and switched-line phase shifter 2023/06
• [招待論文]マイクロ波回路を複合した多機能アンテナ 2023/05
• A Simple Design and Fabrication of Polarization Reconfigurable Antenna for Industrial Scientific and Medical-Band Applications 2023/04
• Experimental Investigation of Reconfigurable Circularly-Polarized Antenna Using Simple Two-Branch Switchable Feed Network 2023/03
• Proposal of Self-Oscillating Multi-Beam Switchable Active Integrated Array Antenna Using SP4T Switch and Push-Push Oscillator 2023/03
• A first-harmonic Push-Push oscillator based active integrated dual-beam switchable array antenna 2023/03
• Proposal of Single-Feed Microstrip Antenna for Quad-Polarization Agility With Short-Ended Microstrip-Line Perturbation 2023/02
• Push-Push発振器を帰還型発振器の能動共振器として用いた構成による4次高調波発振器の試作評価 2023/01
• A Half-Mode Cavity Backed Hybrid Array Antenna using Substrate Integrated Waveguide (SIW) Technology 2023/01
• High-density array antenna with unevenly arranged parasitic elements for large-scale DC rectenna arrays 2023/00
• Dual-polarized microstrip array antenna on single-layer substrate using magic-Ts 2023/00
• Design and characterization of frequency reconfigurable honey bee antenna for cognitive radio application 2022/12
• Loss Analysis of Frequency Tunable Microstrip Antennas Using Wheeler Cap Method 2022/12
• Design of a Hexad-Polarization Antenna With High Isolation and Switchable Feed Network 2022/12
• Experimental Study of Single-Feed Dual-Beam Switchable Array Antenna Using PIN Diodes for 5.8-GHz Application 2022/12
• Prototype Evaluation of 5.8-GHz Differential Rectenna Integrating Bridge Rectifier 2022/11
• Experimental Study of Ring-Slot Active Antenna Integrated With Transistor-Based Oscillator 2022/11
• Prototype Evaluation of 5.8-GHz Monopulse Beam Tracking Antenna 2022/11
• A Multi-Beam Array Antenna Employing Simple 4×2Beam-Forming Network Integrating Magic-T and Hybrid Coupler 2022/10
• A Beam-Forming Antenna Integrating Magic-T Based Matrix Feed Network 2022/10
• A Reconfigurable Circularly-Polarized Ring-Slot Antenna Employing Microstrip-Line Switchable Feed Network 2022/10
• Study on Loss of Varactor-Loaded Tunable Microstrip Antennas Considering Q Factor 2022/08
• A Novel Dual-Band Slot-Ring Array Antenna Using Both-Sided MIC Technology for Polarization Detection 2022/08
• Design and characterization of polarization reconfigurable heart shape monopole antenna for 2.4 GHz application 2022/08
• A Gain Enhanced Linear Polarization Switchable Array Antenna with Switching Diodes 2022/06
• Introduction to Advanced Antenna Technology for Next Generation Wireless Systems 2022/06
• Active Integrated Array Antenna for Next Generation Wireless Communication Systems − Challenge to Advanced Antenna Utilizing Spatial Parameter of Radio Wave 2022/05
• Multi-Layer Approach of Polarization Agile Oscillating-Type Active Integrated Array Antenna for RF Transmitter Front-End 2022/04
• A 2.45- and 5.8-GHz Dual-Band Stacked Differential Rectenna With High Conversion Efficiency in Low Power Density Environmen 2022/04
• A Gunn Diode Based Self-Oscillating Active Integrated Array Antenna With a Concept for Beamwidth Controllability 2021/12
• A Wideband Double-Balanced Multiplier Integrated Circular-Polarization Switchable Microstrip Antenna with Parasitic Elements 2021/12
• A Beam-Switchable Self-Oscillating Active Integrated Array Antenna Using Gunn Oscillator and Magic-T 2021/11
• A High Noise Immunity Monopulse Direction of Arrival Estimation Antenna for Vehicle Tracking 2021/10
• Parameter Study of Dual-Band Array Antenna for Stacked Differential Rectenna Arrays 2021/10
• Densely Arranged Array Antenna for High Output DC Power Rectenna Arrays 2021/10
• Designing of a Both-Sided MIC Starfish Microstrip Array Antenna for K-Band Application 2021/08
• Improvement of Phase Noise Characteristics of Reflective Type Push-Push Oscillator by Using Microstrip-Line Resonators 2021/08
• Proposal of Pattern-Reconfigurable Self-Oscillating Active Array Antenna Integrating Slot-Line Gunn Oscillator and Hybrid Coupler 2021/08
• A Novel Compact Planar Magic-T Using CPS and Microstrip-to-CPS Transition 2021/07
• A Variable Power Divider Employing Magic-T and Variable Phase Shifter 2021/06
• [Keynote speech] Polarization Agile Active Integrated Array Antenna for Next Generation Wireless Systems 2021/03
• Basic Study of a Monopulse DOA Estimation Circularly Polarized Array Antenna Integrated with Magic-T 2021/02
• A Microstrip-Line Gunn Oscillator Loaded Active Integrated Array Antenna Using Inclined Patches for Polarization Switching Function 2021/01
• A Reconfigurable Circularly Polarized Microstrip Antenna with Short-Ended Microstrip Line Perturbations 2021/01
• Experimental Study on Dual-Band Differential Rectenna with Stacked Antenna Configuration 2021/01
• Novel Simulation Approach to Microstrip Antenna Integrated with Nonlinear Circuit 2021/01
• Prototype Evaluation of Monopulse Beam Steering Circularly Polarized Array Antenna 2021/01
• A Quad-Polarization Agile Microstrip Antenna with Diode Loaded Cross Slot and Microstrip Line 2021/01
• Experimental Study on 2-Element Rectenna Array Using Yagi-Uda Antenna 2021/01
• A Dual-Beam Switchable Self-Oscillating Ku-Band Active Array Antenna Integrating Positive Feedback Type Push-Push Oscillator and PSK Modulator 2021/00
• Phase Noise Improvement of Multi-Element Push-Push Oscillator Using Electric and Magnetic Field Couplings 2020/12
• A Novel Miniature Rectenna Integrating Rectifier in Antenna Element for Large-Scale Rectenna Arrays 2020/12
• Basic concept of dual-band differential rectenna for 2.45- and 5.8- GHz Wireless Power Transfer 2020/12
• Design of Dual-Beam Switchable Self-Oscillating Active Array Antenna Integrating Positive Feedback Type Push-Push Oscillator and PSK Modulator 2020/12
• A Monopulse Beam Steering Circularly Polarized Microstrip Array Antenna Using Magic-Ts 2020/09
• A 4-element MIMO Antenna With Orthogonal Circular Polarization for Sub-6 GHz 5G Cellular Applications 2020/06
• A Wideband Dual-Circularly Polarized 2 × 1 Array Antenna Using Multi-Layer Substrate for Compact Structure 2020/01
• Design of a 5G Compatible Two-Element Dual-Band Circularly Polarized MIMO Antenna 2019/12
• Phase Noise Improvement of a Fourth-Harmonic Push-Push Oscillator Using a Ring Resonator With Additional Microstrip-Line Resonators 2019/12
• A Polarization Switchable Active Integrated Array Antenna with a Single-Lambda Slot-Ring Gunn Oscillator and PSK Modulator 2019/12
• A Circularly Polarized Dual-Axis Dual-Beam Array Antenna Employing a Dual-Feed Network with Diagonal 90° Phase Shift 2019/12
• Polarization Agile Active Integrated Antenna and Its Application to Wireless Power Transfer 2019/10
• Design and Performance Studies of a MIMO Antenna With Circular Polarization Diversity for 5G Applications 2019/09
• A Polarization Agile Self-Oscillating Active Integrated 2×2 Array Antenna Using PSK Modulators 2019/08
• Polarization Modulation 2019/07
• A Magic-T Integrated 5.8-GHz Repeater Array Antenna Using Dual-Feed Network 2019/03
• Proposal of a Polarization Switchable Active Array Antenna Integrating a Single-Lambda Slot-Ring Gunn Oscillator and PSK Modulator 2019/03
• Experimental Study of a Circularly Polarized Dual-Axis Dual-Beam Array Antenna Employing Dual-Feed Network 2019/03
• Prototype Evaluation of a Low Phase Noise Push-Push Oscillator Using Dual-Feedback Sub-Oscillators and a Microstrip Ring Resonator 2019/03
• A Multi-layer approach of Orthogonally Fed Circularly Polarized Microstrip Array Antenna for Enhanced Gain 2019/03
• 45°傾けたアンテナ素子へのマジックTを用いた直交給電による円偏波共用アレーアンテナの測定評価 2019/01
• 平面型Magic-Tを用いたバランの基礎検討と可変移相バランへの応用 2019/01
• 2種類の電圧を供給可能なマイクロストリップ－スロット十字分岐を用いた平面レクテナの試作検討 2019/01
• 平面形ガン発振器設計用ガンダイオードモデルの検討 2019/01
• A Circularly Polarized Dual-Axis Wide-Angle Rectenna Employing a Dual-Feed Array Antenna With Inclined Patches 2019/01
• （招待論文）RF信号処理による入力振幅比制御型2軸指向性可変アレーアンテナ 2018/12
• A 5.8-GHz Dual-Axis Monopulse Microstrip Array Antenna Using Dual-Feed Network 2018/11
• A Polarization Switchable Active Array Antenna Integrating a Multiport Oscillator and PSK Modulators 2018/11
• Phase Noise Improvement of a Ku-Band Push-Push Oscillator Using Injection Locking via Two Magnetic Coupling Points 2018/11
• A High Efficiency Differential Rectenna Employing Two-Parasitic-Element Stacked Antenna 2018/11
• A Mutual Phase Synchronization Type Push-Push Oscillator Array Using Fourth-Harmonic Push-Push Oscillators 2018/11
• A Novel Low Phase Noise Push-Push Oscillator Employing Dual-Feedback Sub-Oscillators 2018/11
• (Invited) Active Integrated Array Antenna with Oscillation and Modulation Function for Spatial Modulation Wireless Communications 2018/10
• (Invited) Push-Push Oscillator Arrays Using Unilateral Coupling Circuits and Mutual Coupling Circuit 2018/10
• (Invited) Monopulse DOA Estimation Microstrip Array Antennas Integrated with Magic-Ts 2018/10
• A Novel Ku-Band Push-Push Oscillator with an Improved Synchronization Mechanism 2018/09
• Basic Evaluation of a Coupled Slot-Ring Gunn Oscillator Array for Active Antennas 2018/09
• Experimental Investigation of a Dual-Axis Monopulse Microstrip Array Antenna Employing a Slot-T Type Planar Magic-T 2018/09
• Design of a Variable Attenuation Balun Employing a Planar Magic-T 2018/09
• Design of a Magic-T Integrated Dual Circularly Polarized Array Antenna With Quadrature-Fed Inclined Patches 2018/09
• Ground Plane Size Effect on a Differential Rectenna With Two Parasitic Elements 2018/09
• A Ku-Band Injection-Locked Push-Push Oscillator Using Two-Wavelength Ring Resonator 2018/09
• Experimental Study on Performance Improvement of a DBM Integrated Circularly Polarized Microstrip Antenna Using Stacked Structure 2018/08
• Quadrature Hybrid Integrated Dual-Circularly Polarized Array Antenna 2018/08
• Multi-Port Push-Push Oscillator for Mutually Synchronized Oscillator Array 2018/08
• Functional Microstrip Array Antenna Integrating Double-Sided MIC’s 2018/08
• A Circularly Polarized Triple-Feed Multi-Beam Array Antenna Using Planar Magic-Ts 2018/07
• Experimental Evaluation of a Circularly Polarized Dual-Axis Wide-Angle Rectenna Employing a Dual-Feed Network and Inclined Patches 2018/06
• Rectenna Application of a Quadrature Hybrid Integrated Microstrip Antenna for Multi-Polarization Reception 2018/06
• 2枚の無給電素子を装荷した高利得アンテナのレクテナへの応用 2018/06
• Dual-Axis Monopulse Direction-of-Arraival Estimation Planar Antenna Employing Multilayer Structure 2018/06
• 空間変調無線通信方式の実現を目指した偏波切替機能付き発振器一体型アクティブアンテナの構成法 2018/06
• A Polarization Reconfigurable Microstrip Antenna Employing Dual-Perturbation Techniqu 2018/06
• Design of a 5.8-GHz Circularly Polarized Triple-Feed Array Antenna Using Planar Magic-Ts 2018/03
• Design of a Wideband Dual-Polarized Microstrip Array Antenna 2018/03
• Simulated and Measured Performance of a Gunn-Oscillator Integrated 12-Patch Active Array Antenna With Polarization Switching 2018/03
• リング共振器を用いた3ポート4次高調波Push-Push発振器の実験的検討 2018/03
• Prototype Evaluation of a Novel Ku-Band Push-Push Oscillator Using Dual-Feedback Sub-Oscillators 2018/03
• A Planar Extended Monopulse DOA Estimation Antenna Integrating an RF Multiplier 2018/02
• 偏波変調器とガン発振器を一体化した12素子アクティブアレーアンテナの特性検討 2018/01
• リング共振器を用いたマルチポート4次高調波Push-Push発振器の基礎検討 2018/01
• スロットリング共振器を用いた3ポートPush-Push発振器の特性評価 2018/01
• 二重平衡型乗算器を複合した円偏波アンテナの特性改善に関する検討 2018/01
• A Dual-Band Slot-Embedded Microstrip Antenna for Dual-Polarization Operation 2018/01
• Design of a Dual-Axis Wide-Angle Rectenna With Matching Networks 2017/12
• 偏波切替え機能を有するガン発振器一体型4素子パッチアクティブアレーアンテナの試作検討 2017/11
• Experimental Study on Nonlinear Characteristics of a DBM Integrated Circularly Polarized Microstrip Antenna 2017/11
• Experimental Study of Double-Balanced-Multiplier Integrated Circularly Polarized Microstrip Antenna With Nonlinear Characteristics 2017/10
• A Dual-Axis Wide-Angle Rectenna Using a Triple-Feed Array Antenna 2017/10
• A Circular Polarization Antenna With Square Ring Slot Loaded on Ground Plane 2017/10
• Basic Study of a Fourth Harmonic Push-Push Oscillator Using a Microstrip Line Resonator 2017/09
• Design of an Injection Circuit for Sub-Harmonic Injection Locked Gunn Oscillators 2017/09
• Proposal of a Low Phase Noise Push-Push Oscillator Using Dual-Feedback Sub-Oscillators 2017/09
• 両平面回路技術によるマイクロストリップアレーアンテナの機能化 2017/09
• Performance Comparison of Conical/Pencil Dual-Beam Array Antennas Using Two Different Types of Planar Magic-Ts 2017/09
• Design of a Polarization Reconfigurable Defected Ground Microstrip Antenna With L-shape Corner Segment 2017/09
• スロット－マイクロストリップT分岐を用いた倍電圧型平面レクテナの実験的検討 2017/09
• Experimental Study of Double-Balanced-Multiplier Integrated Circularly Polarized Microstrip Antenna for Tx and Rx operation (Invited) 2017/08
• A 5.8-GHz Planar Beam Tracking Antenna Using a Magic-T 2017/08
• Circular Polarization Agile Microstrip Antenna With Double Balanced Multiplier on Ring Slot 2017/07
• A Frequency Diversity Reconfigurable Antenna With Circular Polarization Switching Capability 2017/07
• Design of a Conical/Pencil Dual-Beam Array Antenna Using Planar Magic-Ts 2017/06
• Performance Improvement of a Dual-Axis Wide-Angle Rectenna Using Matching Networks 2017/06
• RF Signal Processing with Antenna and Microwave Circuit Integration 2017/06
• Experiment Evaluation of a Multiport Harmonic Gunn Oscillator With Fundamental Signal Suppression 2017/06
• Rectenna Design Using Electromagnetic Field Simulation Including Nonlinear Devices (Invited) 2017/03
• Rectenna Design Using Electromagnetic Field Simulation Including Nonlinear Devices (Invited) 2017/03
• 【論文誌技術解説】大学発マイクロ波論文特集の発刊に寄せて 2017/01
• A Circular Polarization Array Antenna With Inclined Patches Using Both-Sided MIC Technology 2017/01
• [巻頭言]大学発マイクロ波論文特集の発行にあたって－より豊かで安全・安心な社会の実現を目指して－ 2016/12
• Design of an In-Phase/Anti-Phase Triple-Feed Array Antenna Using Two Types of Magic-Ts 2016/11
• (Invited) Double Balanced Multiplier Integrated Polarization Agile Microstrip Antenna 2016/10
• (Invited) Advanced Planar Rectenna Technology 2016/10
• An RF Multiplier Integrated Planar Antenna for DOA Estimation 2016/10
• An H-Plane Wide-Angle Rectenna Using an In-Phase/Anti-Phase Dual-Feed Antenna 2016/10
• A Microstrip Antenna With Circular Polarization Switching Capability for X-Band Applications 2016/10
• An RF Multiplier Integrated Planar Antenna for DOA Estimation 2016/10
• An H-Plane Wide-Angle Rectenna Using an In-Phase/Anti-Phase Dual-Feed Antenna 2016/10
• A Microstrip Antenna With Circular Polarization Switching Capability for X-Band Applications 2016/10
• (Invited) Double Balanced Multiplier Integrated Wideband Circular Polarization Switchable Microstrip Antenna 2016/08
• (Invited) Double Balanced Multiplier Integrated Wideband Circular Polarization Switchable Microstrip Antenna 2016/08
• Stabilizing Output Performance of Positive Feedback Type Push-Push Oscillator Array by Injection Locking Technology 2016/07
• Stabilizing Output Performance of Positive Feedback Type Push-Push Oscillator Array by Injection Locking Technology 2016/07
• 簡易型微小位相差計測回路に適した自動計測システム 2016/07
• マジックTを用いた5.8GHz帯E面広角指向性レクテナ 2016/06
• Design of an Orthogonal Feed Circularly Polarized Microstrip Array Antenna Suitable for Large Scale Extensible Arrays 2016/05
• Design of an Orthogonal Feed Circularly Polarized Microstrip Array Antenna Suitable for Large Scale Extensible Arrays 2016/05
• 非対称縦積み線路を用いた準ミリ波帯バランスミキサ 2016/05
• マイクロ波学生設計コンテストにおける優秀学生の育成法 2016/04
• 電気2重層キャパシタ一体型ディファレンシャルレクテナの特性評価 2016/03
• Performance Analysis of Magic-T Integrated Array Antennas in Two Different Configurations 2016/03
• Experimental Investigation of a Circularly Polarized Array Antenna With Inclined Linear Polarization Patches 2016/03
• スロットT分岐型マジックTのH面指向性可変アレーアンテナへの応用 2016/03
• ガン発振器を一体化したアクティブアレーアンテナの提案 2016/03
• 2種類の平面型マジックTを用いた同相・逆相3給電アンテナの提案 2016/03
• A Differential Rectenna and Its Flexibility 2016/03
• バラクタダイオードを用いた周波数可変円偏波マイクロストリップアンテナの特性評価 2016/01
• 二重平衡型乗算器を用いた偏波切り替え機能を有する平面アンテナの基礎検討 2016/01
• Magic-T回路を用いた偏波共用L形マイクロストリップアレーアンテナの基礎検討 2016/01
• スロットT分岐型マジックTを用いた2給電平面アレーアンテナの基本検討 2016/01
• 注入同期構成を用いた3素子正帰還型Push-Push発振器アレーの実験的評価 2016/01
• 5.8-GHz Stacked Differential Rectenna Suitable for Large-Scale Rectenna Arrays with DC connection 2015/12
• 可変長ショートスタブを用いたマルチバンドRF回路設計法 2015/12
• 縦続接続移相器を用いたPush-Push発振器アレー 2015/12
• Prototype Evaluation of a Beam Tracking Antenna Using Magic-T 2015/11
• Gain Enhancement of a Dual Feed Microstrip Array Antenna Using Parasitic Elements 2015/11
• Selective Wireless Power Transfer Using Two Transmission Coils Sandwiching Reception Coils 2015/11
• Experimental Study on Load Resistance Design of a Differential Rectenna 2015/11
• A Study of Automatic Measuring Circuit Suitable for Very Small Phase Difference Measurement 2015/11
• ディファレンシャルレクテナの高効率化に向けた整合回路の検討 2015/11
• 直線配置選択的WPTシステムにおける共振器配置の検討 2015/11
• スロット線路共振器を用いた2素子2倍波ガン発振器の基礎検討 2015/11
• マイクロ波回路とアンテナを融合した高機能平面アンテナ技術，位相差給電による磁気共鳴型選択的ワイヤレス電力伝送技術 2015/11
• Magnetic Resonance Type Selective Wireless Power Transfer Using Two Transmission Resonators with Phase Difference 2015/11
• Prototype Evaluation of a Beam Tracking Antenna Using Magic-T 2015/11
• Gain Enhancement of a Dual Feed Microstrip Array Antenna Using Parasitic Elements 2015/11
• Selective Wireless Power Transfer Using Two Transmission Coils Sandwiching Reception Coils 2015/11
• Experimental Study on Load Resistance Design of a Differential Rectenna 2015/11
• A Study of Automatic Measuring Circuit Suitable for Very Small Phase Difference Measurement 2015/11
• Magnetic Resonance Type Selective Wireless Power Transfer Using Two Transmission Resonators with Phase Differenc 2015/11
• A Push-Push Oscillator Array with Very Simple Coupling Circuits Using HEMT 2015/09
• Experimental Investigation of a Selective WPT System Using Two Transmission Coils Sandwiching Reception Coils 2015/09
• 逆相給電マイクロストリップアレーアンテナの無給電素子を用いた高利得化 2015/09
• Theoretical Approach of a Beam Tracking Antenna Using Magic-T 2015/09
• Basic Concept of an Active Array Antenna Integrated with a Gunn Oscillator 2015/09
• Discussion on Load Resistance of Differential Rectennas 2015/09
• Basic Evaluation of a Second Harmonic Injection Locking Gunn Oscillator 2015/09
• Experimental Evaluation of a New Oscillator Array Using Push-Push Oscillators with High Connection Flexibility to Coupling Circuits 2015/09
• Experimental Examination of Resonator Locations in a Doubly Symmetric Selective WPT System 2015/09
• A Push-Push Oscillator Array with Very Simple Coupling Circuits Using HEMT 2015/09
• Basic Study of a Beam Tracking Antenna Using a Planar Magic-T 2015/08
• 簡易型微小位相差計測回路に適した自動振幅調整アルゴリズムの検討 2015/08
• Experimental Study of an Improved Mono-Pulse DOA Estimation Antenna by Integrating Microwave Circuits 2015/08
• Basic Evaluation of a Positive Feedback Type Push-Push Oscillator Array Using Injection Locking Technology 2015/08
• A Planar Magic-T Employing a Slot-Line T Junction and Its Performance Improvement Using an Impedance Transformer 2015/08
• A Push-Push Oscillator Array Using Mutual Phase Synchronization and Injection Locking 2015/08
• Double Balanced Multiplier Integrated Circular Polarization Switchable Microstrip Antenna 2015/07
• Double Balanced Multiplier Integrated Circular Polarization Switchable Microstrip Antenna 2015/07
• A Differential Rectenna with Matching Shorted Stubs 2015/06
• マジックTを用いた広角指向性レクテナの特性評価－ダイオードの接続方法の比較－ 2015/06
• A Differential Rectenna with Matching Shorted Stubs 2015/06
• Design and parametric analysis of a planar array antenna for circular polarization 2015/03
• マイクロ波回路とアンテナを融合した高機能平面アンテナの基礎 2014/12
• Design of an X-Band Microstrip Array Antenna for Circular Polarization 2014/12
• Performance Evaluation of a 5.8-GHz Current Aggregation Type Multi-polarization Rectenna 2014/12
• Estimation Error of a Mono-pulse DOA Estimation Antenna for Two Incident Waves 2014/12
• [Invited Talk] Advanced Planar Rectenna -Expandability and Functionality of Rectenna- 2014/11
• 無線通信の基礎技術―ディジタル化からブロードバンド化へ― 2014/11
• A Push-Push Oscillator Array Using Resonator Type Coupling Circuits 2014/11
• A Mutual Phase Synchronization Type Push-Push Oscillator Array Using Simple Coupling Circuit 2014/11
• Differential Rectenna Arrays 2014/11
• Advanced Planar Antennas Integrated with Microwave Circuits for RF Signal Processing Applications 2014/11
• Design of a Dual Circular Polarization Microstrip Patch Array Antenna 2014/10
• Technology prospects of advanced planar antennas integrated with microwave circuits 2014/10
• An Oscillator Array Using Push-Push Oscillators and Very Simple Coupling Circuits 2014/07
• An Oscillator Array Using Positive Feedback Type Push-Push Oscillators and Directional Phase Shifters 2014/07
• A Mono-Pulse DOA Estimation Antenna Integrated with RF Amplifiers and Detection Circuits 2014/07
• Performance of 5.8-GHz Multi-Polarization Rectenna for Linearly/Circularly Polarized Wave Reception 2014/05
• 直交偏波分離型マルチ偏波受信レクテナの等価回路解析 2014/03
• マジック-T回路を用いて構成した広角指向性を有するレクテナの提案 2014/03
• 可変長スタブを用いたマルチバンド増幅器設計法の試作検討 2014/03
• 磁界結合による簡易な結合回路を用いた相互同期型Push-Push発振器アレーの提案 2014/03
• Design of a Circular Polarization Switchable Microstrip Array Antenna Using Magic-T Bias Circuit 2014/02
• 増幅回路と検波回路を一体化したモノパルス方式電波到来角推定アンテナの特性評価 2014/01
• 可変利得増幅器を一体化した直交励振指向性可変マイクロストリップアレーアンテナの施策検討 2014/01
• 空間変調システム用の偏波切替／偏波識別平面機能アンテナの試作評価 2014/01
• マジックTを用いた広角受信レクテナの基礎検討 2014/01
• バンドギャップ切り替え機能を持つ新しいCRLH伝送線路構成法の検討 2014/01
• 両平面回路への適用を目指したCRLHスロット線路の基礎検討 2014/01
• 位相差給電による磁界共振結合型選択的無線電力伝送システムにおける共振器位置依存性の検討 2014/01
• 直交偏波分離型マルチ偏波受信レクテナの偏波角特性の検討 2014/01
• 5.8-GHz Stacked Differential Mode Rectenna Suitable for Large-Scale Rectenna Arrays 2013/11
• 簡易な回路構成の結合回路を用いたPush-Push発振器アレー 2013/11
• Antenna(PCT/JP2013/077666) 2013/10
• 5.8-GHz Series/Parallel Connected Rectenna Array Using Expandable Differential Rectenna Units 2013/09
• 可変長スタブを用いたマルチバンド増幅器設計法の提案 2013/09
• 検波回路を一体構成したモノパルス方式電波到来角推定アンテナの検討 2013/09
• 空間変調通信システム用の偏波切替/識別平面機能アンテナの提案 2013/09
• 直交偏波分離型マルチ偏波受信レクテナの円偏波受信特性 2013/09
• 大規模集積化に向けた縦積みディファレンシャルレクテナの構成パラメータの検討（その2） 2013/09
• Prototype Evaluation of a PSK Modulator/Demodulator for Space Modulation Systems 2013/09
• Basic Concept of a Selective Wireless Power Transfer System Using Two Transmission Resonators with Phase Difference 2013/09
• Experimental Evaluation of 30-element Stacked Differential Rectenna Array 2013/09
• Performance Comparison between Multi-Polarization Rectenna and Two-Patch Differential Rectenna 2013/09
• Study on Characteristic Impedance of Differencial Rectenna Unit 2013/07
• 5.8-GHz Integrated Differential Rectenna Unit using Both-Sided MIC Technology with Design Flexibility 2013/06
• ［チュートリアル講演］直交励振モードを活用した機能アンテナ 2013/05
• 大規模集積化に向けた縦積みディファレンシャルモードレクテナの構成パラメータ検討 2013/05
• A Band-Rejection Branch-Line Hybrid Using Unbalanced CRLH Transmission Lines 2013/04
• Novel Phase Noise Reduction Method for Positive Feedback Type Push-Push Oscillator 2013/04
• 5.8-GHz Multi-Polarization Rectenna Integrating Dual-Polarized Antennas 2013/04
• 空間変調通信システムのための偏波切替／偏波識別平面機能アンテナ 2013/04
• 大規模集積化に向けた縦積みディファレンシャルモードレクテナの提案 2013/03
• [招待論文]ワイヤレスモジュールの機能高度化へ向けた波動信号処理の一アプローチ 2012/12
• A Ku Band Oscillator Array Using Positive Feedback Type Push-Push Oscillators 2012/12
• Orthogonal Linear Polarization Switchable Slot-Ring Array Antenna Using RF-MEMS Switch 2012/12
• Basic Characteristics of Selective Wireless Power Transfer System Based on Coupled Magnetic Resonances 2012/12
• Beam Steering Microstrip Array Antenna with Orthogonal Excitation 2012/12
• Single Fed Orthogonal Linear Polarization Switchable Microstrip Planar Antenna 2012/12
• Multi-band orthogonal linear polarization discrimination planar array antenna 2012/11
• 平面回路技術と平面アンテナ―機能高度化と小型簡易化に向けた集積化の検討 2012/11
• Direction of arrival estimating array antenna 2012/10
• Linear Polarization Switchable Microstrip Array Antenna using Magic-T Circuit 2012/10
• Orthogonal Linear Polarization Detection Slot-ring Antenna 2012/10
• Polarization Agile Slot-Ring Array Antenna using Magic-T Circuit 2012/10
• アンテナ装置 2012/10
• Circular Polarization Switchable Single Layer Microstrip Array Antenna 2012/07
• Differential Mode Rectenna Array 2012/07
• High Gain Linear Polarization Switchable Planar Array Antenna 2012/05
• Orthogonal Circular Polarization Detection Patch Array Antenna Using Double Balanced RF Multiplier 2012/05
• Performance Analysis of Mobile Ad-hoc Network Routing Protocols 2012/05
• Analyses of Antenna Displacement in Short-Range MIMO Transmission over Millimeter-Wave 2011/10
• 新情報通信概論　第2版 2011/08
• 知識ベース「知識の森(β版)」 2010/11
• ワイヤレス・パーソナルエリア・ネットワークのシステム設計に適した回転軸対称なビームを持つアンテナモデル 2010/05
• 遅延制御による偶数段リング構成ダイナミック1/4N分周器 2010/02
• OFDM/OFDMA教科書 2008/09
• パーソナルエリアネットワークを進化させるミリ波技術と標準化活動 2007/09
• Interference Analysis from Impulse Radio UWB Systems using Simple Signal Models 2005/11
• Software Defined Radio Prototype for PHS and IEEE802.11 Wireless LAN 2002/12
• Three-Dimensional MMIC Technology on Silicon: Review and Recent Advances (Invited) 2002/07
• Three-dimensional MMIC Technology for Low-Cost Millimeter-Wave MMICs 2001/09
• A Compact V-band 3-D MMIC Single-chip Down-converter Using Photosensitive BCB Dielectric Film 1999/12
• Quick Development of Multifunctional MMICs Using Three-Dimensional Masterslice MMIC Technology (Invited) 1999/11
• Miniaturized Millimeter-wave Masterslice 3-D MMIC Amplifier and Mixer 1999/09
• Compact and Broadband Three-dimensional MMIC Balun 1999/01
• A Novel High-Q and Wide-Frequency-Range Inductor Using Si 3-D MMIC technology 1999/01
• Extended Integral Equation Formulation for Scattering Problems from a Cylindrical Scatterer 1998/11
• Three-dimensional MMIC Technology For Fully CAD-Compatible MMIC Development 1998/06
• Three-Dimensional Masterslice MMIC on Si Substrate 1997/12
• Wide-Tuning Range Si Bipolar VCO's Based on Three-Dimensional MMIC Technology 1997/12
• Three-Dimensional Interconnect technology for Ultra-Compact MMICs 1997/10
• A 20-GHz-Band Subharmonically Injection-Locked Oscillator MMIC with Wide Looking Range 1997/08
• Highly Integrated Three-Dimensional MMIC Single-Chip Receiver and Transmitter 1996/12
• Folded U-shaped Microwire Technology for Ultra-Compact three-dimensional MMICs 1996/12
• Miniaturized Wilkinson Power Divider Using Three-Dimensional MMIC Technology 1996/10
• Three-dimensional Passive Circuit Technology for Ultra-compact MMICs 1995/12
• An 11-GHz-Band Subharmonic-Injection-Locked Oscillator MMIC 1995/08
• Three-dimensional MMIC and Its Application: An Ultra-wideband Miniature Balun 1995/08
• A Low-Voltage, High-Power T/R-Switch MMIC Using LC Resonators 1995/05
• Characterization of a Monolithic Slot Antenna using an Electro-Optic Sampling Technique 1994/12
• A Novel Injection-Locked Oscillator MMIC with Combined Ultrawide-Band Active Combiner/Divider and Amplifiers 1994/12
• Three-Dimensional Passive Elements for Compact GaAs MMICs 1993/06
• Computational Electromagnetics –Frequency-Domain Method of Moments 1992/04
• 拡張形積分方程式を用いた3次元電磁波散乱問題の境界要素法解析 1990/06
• 有限・境界要素結合解析法による電磁波散乱問題の解析 1989/11
• 誘電体スラブ線路折れ曲り部の積分方程式法解析 1988/01
• 光ファイバ開放端および誘電体ロッドアンテナの電磁界解析 1986/04

Books

• Polarization Modulation;　2019/07
  ANNOUNCEMENT INFO.;　Modulation in Electronics and Telecommunications [Working Title], IntechOpen, July 2019.
  AUTHOR;　Ichihiko Toyoda
  
• 無線通信の基礎技術―ディジタル化からブロードバンド化へ―;　2014/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 絶対わかる！無線LAN超入門;　2014/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 新情報通信概論　第2版;　2011/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• OFDM/OFDMA教科書;　2008/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Computational Electromagnetics –Frequency-Domain Method of Moments;　1992/04
  ANNOUNCEMENT INFO.;　
  AUTHOR;　Eds. E. K. Miller, L. M-Mitschang, E. H. Newman
  

Original Articles

• Simple Integration of Cavity-Backed Antenna with Patch Antenna for Developing Hybrid Antenna Using SIW Technology;　2024/02
  ANNOUNCEMENT INFO.;　Int. J. RF Microw. Comp.-Aid. Eng., 2024
  AUTHOR;　A. H. Murshed, M. A. Hossain, N. K. Kiem, N. H. Hai, E. Nishiyama, I. Toyoda, and I. Mahbub
  
• A phase Shift keying modulator integrated single-feed circular polarization agile array antenna;　2024/01
  ANNOUNCEMENT INFO.;　Electron. Lett., 60, 1, 1-3
  AUTHOR;　T. P. Phyoe, M. Hasan, E. Nishiyama, and I. Toyoda
  
• A penta-band microstrip slot antenna for S-, C- and X-band applications;　2023/12
  ANNOUNCEMENT INFO.;　Electron. Lett., 59, 23, 1-3
  AUTHOR;　M. A. Rahman, MD S. Islam, MD S. Hossain, M. Hasan, E. Nishiyama, and I. Toyoda
  
• A Quad-Polarization and Beam Agile Array Antenna Using Rat-Race Coupler and Switched-Line Phase Shifter;　2023/09
  ANNOUNCEMENT INFO.;　IEEE Open J. Antennas Propag.
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• An Electrically Reconfigurable Circularly-Polarized Planar Array Antenna With Built-In Bias-Isolation Mechanism;　2023/09
  ANNOUNCEMENT INFO.;　IEEE Access, Vol. 11, pp. 108317-108327, Sep. 2023., 11, 108317-108327
  AUTHOR;　H. W. Htun, E. Nishiyama, and I. Toyoda
  
• A tri-state SPDT switch using shunt open-end stub resonator for X-band applications;　2023/07
  ANNOUNCEMENT INFO.;　IEICE Electronics Express, Vol. 20, No. 17, pp. 1-5, Article ID 20.20220522, Jul. 2023., 20, 17, 1-5
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• Three-state pattern reconfigurable active antenna integrated with Gunn oscillator and switched-line phase shifter;　2023/06
  ANNOUNCEMENT INFO.;　Electron. Lett., Vol. 59, No. 12, e12839, pp. 1-3, Jun. 2023., 59, 12, 1-3
  AUTHOR;　M. Hasan, E. Nishiyama, T. Tanaka, and I. Toyoda
  
• [招待論文]マイクロ波回路を複合した多機能アンテナ;　2023/05
  ANNOUNCEMENT INFO.;　, J106-B, 5
  AUTHOR;　
  
• A Simple Design and Fabrication of Polarization Reconfigurable Antenna for Industrial Scientific and Medical-Band Applications;　2023/04
  ANNOUNCEMENT INFO.;　Int. Journal Electric. Comp. Eng., 31, 2, 1580-1587
  AUTHOR;　M. A. Hossain, M. A. Rahman, A. H. Murshed, E. Nishiyama, and I. Toyoda
  
• A first-harmonic Push-Push oscillator based active integrated dual-beam switchable array antenna;　2023/03
  ANNOUNCEMENT INFO.;　Electron. Lett., 59, 5, 1-3
  AUTHOR;　M. Hasan, E. Nishiyama, T. Tanaka, and I. Toyoda
  
• Push-Push発振器を帰還型発振器の能動共振器として用いた構成による4次高調波発振器の試作評価;　2023/01
  ANNOUNCEMENT INFO.;　, J106-C, 1, 60-61
  AUTHOR;　
  
• A Half-Mode Cavity Backed Hybrid Array Antenna using Substrate Integrated Waveguide (SIW) Technology;　2023/01
  ANNOUNCEMENT INFO.;　IEEE Trans. Antennas Propag., 71, 1, 169-179
  AUTHOR;　A. H. Murshed, M. A. Hossain, N. K. Kiem, N. H. Hai, M. A. Hossain, E. Nishiyama, and I. Toyoda
  
• High-density array antenna with unevenly arranged parasitic elements for large-scale DC rectenna arrays;　2023/00
  ANNOUNCEMENT INFO.;　IEICE Comm. Express, Article ID 2023XBL0004
  AUTHOR;　T. Kichiji, E. Nishiyama, and I. Toyoda
  
• Dual-polarized microstrip array antenna on single-layer substrate using magic-Ts;　2023/00
  ANNOUNCEMENT INFO.;　IEICE Comm. Express, Article ID 2023SPL0017
  AUTHOR;　E. Nishiyama, S. Suenaga, and I. Toyoda
  
• Design and characterization of frequency reconfigurable honey bee antenna for cognitive radio application;　2022/12
  ANNOUNCEMENT INFO.;　Int. J. Electric. Comp. Eng.,, 12, 6, 6178-6186
  AUTHOR;　A. H. Murshed, M. A. Hossain, E. Nishiyama, and I. Toyoda
  
• A Novel Dual-Band Slot-Ring Array Antenna Using Both-Sided MIC Technology for Polarization Detection;　2022/08
  ANNOUNCEMENT INFO.;　Int. J. RF Microw. Comput. Aided Eng.
  AUTHOR;　M. A. Hossain, A. H. Murshed, M. A. Rahman, E. Nishiyama, and I. Toyoda
  
• Design and characterization of polarization reconfigurable heart shape monopole antenna for 2.4 GHz application;　2022/08
  ANNOUNCEMENT INFO.;　Int. J. Electrical and Computer Eng., 12, 4, 3808-3819
  AUTHOR;　A. H. Murshed, M. A. Hossain, M. A. Rahman, E. Nishiyama, and I. Toyoda
  
• A Gain Enhanced Linear Polarization Switchable Array Antenna with Switching Diodes;　2022/06
  ANNOUNCEMENT INFO.;　Int. J. RF Microw. Comput.-Aided Eng.
  AUTHOR;　M. A. Hossain, A. H. Murshed, M. A. Rahman, E. Nishiyama, and I. Toyoda
  
• Multi-Layer Approach of Polarization Agile Oscillating-Type Active Integrated Array Antenna for RF Transmitter Front-End;　2022/04
  ANNOUNCEMENT INFO.;　Int. J. Microw. Wirel. Tech.
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• A 2.45- and 5.8-GHz Dual-Band Stacked Differential Rectenna With High Conversion Efficiency in Low Power Density Environmen;　2022/04
  ANNOUNCEMENT INFO.;　IEEE Open J. Antennas Propag., 3, 627-636
  AUTHOR;　K. Saito, E. Nishiyama, and I. Toyoda
  
• A Beam-Switchable Self-Oscillating Active Integrated Array Antenna Using Gunn Oscillator and Magic-T;　2021/11
  ANNOUNCEMENT INFO.;　IEICE Trans. Comm., E104-B, 11
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• A Novel Compact Planar Magic-T Using CPS and Microstrip-to-CPS Transition;　2021/07
  ANNOUNCEMENT INFO.;　IEICE Electronics Express, 18, 15, 1-4
  AUTHOR;　H. Nakahara, T. Tanaka, and I. Toyoda
  
• A Variable Power Divider Employing Magic-T and Variable Phase Shifter;　2021/06
  ANNOUNCEMENT INFO.;　IEEE Microw. Wireless Compon. Lett., 31, 6, 565-568
  AUTHOR;　N. Morita, T. Tanaka, and I. Toyoda
  
• Basic Study of a Monopulse DOA Estimation Circularly Polarized Array Antenna Integrated with Magic-T;　2021/02
  ANNOUNCEMENT INFO.;　IEICE Comm. Express, 2020XBL0141, 2020. https://doi.org/10.1587/comex.2020XBL0141
  AUTHOR;　E. Nishiyama, D. Iwamoto, I. Toyoda, M. Miyashita, K. Tomimoto, and R. Yamaguchi
  
• A Dual-Beam Switchable Self-Oscillating Ku-Band Active Array Antenna Integrating Positive Feedback Type Push-Push Oscillator and PSK Modulator;　2021/00
  ANNOUNCEMENT INFO.;　Progress In Electromagnetics Research C, 116, 181-192
  AUTHOR;　M. Hasan, E. Nishiyama, T. Tanaka, and I. Toyoda
  
• A 4-element MIMO Antenna With Orthogonal Circular Polarization for Sub-6 GHz 5G Cellular Applications;　2020/06
  ANNOUNCEMENT INFO.;　SN Appl. Sci., 2, 1180, Jun. 2020. https://doi.org/10.1007/s42452-020-2957-z
  AUTHOR;　S. Chakraborty, M. A. Rahaman, M. A. Hossain, A. T. Mobashsher, E. Nishiyama, and I. Toyoda
  
• A Wideband Dual-Circularly Polarized 2 × 1 Array Antenna Using Multi-Layer Substrate for Compact Structure;　2020/01
  ANNOUNCEMENT INFO.;　Microwave and Optical Tech. Lett., vol. 62, pp. 474-483
  AUTHOR;　M. A. Rahman, E. Nishiyama, I. Toyoda
  
• A Polarization Switchable Active Integrated Array Antenna with a Single-Lambda Slot-Ring Gunn Oscillator and PSK Modulator;　2019/12
  ANNOUNCEMENT INFO.;　IEICE Comm. Express, Vol. X8-B, No. 12, pp. 560-565
  AUTHOR;　M. Hasan, E. Nishiyama, I. Toyoda
  
• A Circularly Polarized Dual-Axis Dual-Beam Array Antenna Employing a Dual-Feed Network with Diagonal 90° Phase Shift;　2019/12
  ANNOUNCEMENT INFO.;　IEICE Comm. Express, Vol. X8-B, No. 12,, pp. 462-467
  AUTHOR;　T. P. Phyoe, E. Nishiyama, I. Toyoda
  
• A Magic-T Integrated 5.8-GHz Repeater Array Antenna Using Dual-Feed Network;　2019/03
  ANNOUNCEMENT INFO.;　Progress In Electromagnetics Research M, Vol. 80, pp. 1-11, 2019.
  AUTHOR;　T. P. Phyoe, E. Nishiyama, and I. Toyoda
  
• A Multi-layer approach of Orthogonally Fed Circularly Polarized Microstrip Array Antenna for Enhanced Gain;　2019/03
  ANNOUNCEMENT INFO.;　Int’l J. Microwave and Wireless Tech., Mar. 2019.
  AUTHOR;　M. A. Rahman, E. Nichiyama, M. A. Hossain, Q. D. Hossain, and I. Toyoda
  
• A Circularly Polarized Dual-Axis Wide-Angle Rectenna Employing a Dual-Feed Array Antenna With Inclined Patches;　2019/01
  ANNOUNCEMENT INFO.;　Progress In Electromagnetics Research M, Vol. 77, pp. 135-145, 2019.
  AUTHOR;　T. P. Phyoe, E. Nishiyama, and I. Toyoda
  
• （招待論文）RF信号処理による入力振幅比制御型2軸指向性可変アレーアンテナ;　2018/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• A Novel Low Phase Noise Push-Push Oscillator Employing Dual-Feedback Sub-Oscillators;　2018/11
  ANNOUNCEMENT INFO.;　Progress In Electromagnetics Research M, Vol. 75, pp. 141-148, 2018.
  AUTHOR;　E. Lima, T. Tanaka, and I. Toyoda
  
• Dual-Axis Monopulse Direction-of-Arraival Estimation Planar Antenna Employing Multilayer Structure;　2018/06
  ANNOUNCEMENT INFO.;　IEICE Comm. Express, Vol. 7, No. 6, pp. 224-229, June 2018.
  AUTHOR;　R. Rashid, M. A. Hossain, E. Nishiyama, and I. Toyoda
  
• 空間変調無線通信方式の実現を目指した偏波切替機能付き発振器一体型アクティブアンテナの構成法;　2018/06
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• A Polarization Reconfigurable Microstrip Antenna Employing Dual-Perturbation Techniqu;　2018/06
  ANNOUNCEMENT INFO.;　Progress In Electromagnetics Research M, Vol. 69, pp. 197-206, 2018.
  AUTHOR;　M. A. Rahman, E. Nishiyama, and I. Toyoda
  
• A Planar Extended Monopulse DOA Estimation Antenna Integrating an RF Multiplier;　2018/02
  ANNOUNCEMENT INFO.;　Progress In Electromagnetics Research C, Vol. 81, pp. 53-62, 2018.
  AUTHOR;　R. Rashid, E. Nishiyama, and I. Toyoda
  
• A Dual-Band Slot-Embedded Microstrip Antenna for Dual-Polarization Operation;　2018/01
  ANNOUNCEMENT INFO.;　Progress In Electromagnetics Research M, Vol. 63, pp.141-149, 2018.
  AUTHOR;　M. A. Rahman, E. Nishiyama, and I. Toyoda
  
• 簡易型微小位相差計測回路を用いた膀胱内尿量計測回路;　2017/10
  ANNOUNCEMENT INFO.;　, 137, 10, 1304-1309
  AUTHOR;　
  
• A 5.8-GHz Planar Beam Tracking Antenna Using a Magic-T;　2017/08
  ANNOUNCEMENT INFO.;　Progress In Electromagnetics Research C, Vol. 76, pp. 159-170, 2017.
  AUTHOR;　R. Rashid, E. Nishiyama, and I. Toyoda
  
• Rectenna Design Using Electromagnetic Field Simulation Including Nonlinear Devices (Invited);　2017/03
  ANNOUNCEMENT INFO.;　Proc. 2017 IEEE Int’l Conf. Computational Electromagnetics, pp. 130-132, 2B1.5
  AUTHOR;　I. Toyoda and E. Nishiyama
  
• A Circular Polarization Array Antenna With Inclined Patches Using Both-Sided MIC Technology;　2017/01
  ANNOUNCEMENT INFO.;　IEICE Commun. Express, Vol. 6, No. 1, pp. 40-45, Jan. 2017.
  AUTHOR;　M. A. Rahman, E. Nishiyama, M. A. Hossain, Q. D. Hossain, and I. Toyoda
  
• Design of an In-Phase/Anti-Phase Triple-Feed Array Antenna Using Two Types of Magic-Ts;　2016/11
  ANNOUNCEMENT INFO.;　IEICE Commun. Express, Vol. 5, No. 11, pp. 413-417, Nov. 2016.
  AUTHOR;　H. Satow, Y. Tanaka, E. Nishiyama, and I. Toyoda
  
• An RF Multiplier Integrated Planar Antenna for DOA Estimation;　2016/10
  ANNOUNCEMENT INFO.;　Proc. 2016 Int'l Symp. Antennas and Propag. (ISAP2016), pp. 438-439, POS1-77, Okinawa, Japan, Oct. 2016.
  AUTHOR;　R. Rashid, D. Hattori, E. Nishiyama, and I. Toyoda
  
• An H-Plane Wide-Angle Rectenna Using an In-Phase/Anti-Phase Dual-Feed Antenna;　2016/10
  ANNOUNCEMENT INFO.;　Proc. 2016 Int'l Symp. Antennas and Propag. (ISAP2016), pp. 532-533, POS1-124, Okinawa, Japan, Oct. 2016.
  AUTHOR;　H. Satow, Y Tanaka, E. Nishiyama, and I. Toyoda
  
• A Microstrip Antenna With Circular Polarization Switching Capability for X-Band Applications;　2016/10
  ANNOUNCEMENT INFO.;　Proc. 2016 Int'l Symp. Antennas and Propag. (ISAP2016), pp. 820-821, POS2-55, Okinawa, Japan, Oct. 2016.
  AUTHOR;　M. A. Rahman, E. Nishiyama, M. A. Hossain, Q. D. Hossain, and I. Toyoda
  
• (Invited) Double Balanced Multiplier Integrated Wideband Circular Polarization Switchable Microstrip Antenna;　2016/08
  ANNOUNCEMENT INFO.;　2016 IEEE Int’l Symp. Radio-Frequency Integration Tech. (RFIT2016), Taipei, Taiwan, Aug. 2016.
  AUTHOR;　E. Nishiyama, T. Ino, and I. Toyoda
  
• Stabilizing Output Performance of Positive Feedback Type Push-Push Oscillator Array by Injection Locking Technology;　2016/07
  ANNOUNCEMENT INFO.;　2016 17th Int’l Symp. Antenna Technology and Applied Electromagnetics (ANTEM2016), Montreal, QC, Canada, July 2016.
  AUTHOR;　T. Tanaka, H. Umezaki, and I. Toyoda
  
• 簡易型微小位相差計測回路に適した自動計測システム;　2016/07
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• マジックTを用いた5.8GHz帯E面広角指向性レクテナ;　2016/06
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Design of an Orthogonal Feed Circularly Polarized Microstrip Array Antenna Suitable for Large Scale Extensible Arrays;　2016/05
  ANNOUNCEMENT INFO.;　5th Int’l Conf. Informatics, Electronics & Vision (ICIEV2016), 53, Dhaka, Bangladesh, May 2016.
  AUTHOR;　M. A. Rahman, E. Nishiyama, M. A. Hossain, Q. D. Hossain, and I. Toyoda
  
• 非対称縦積み線路を用いた準ミリ波帯バランスミキサ;　2016/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 5.8-GHz Stacked Differential Rectenna Suitable for Large-Scale Rectenna Arrays with DC connection;　2015/12
  ANNOUNCEMENT INFO.;　IEEE Trans. Antennas & Propag., 63, 12, 377-382
  AUTHOR;　T. Matsunaga, E. Nishiyama, and I. Toyoda
  
• 可変長ショートスタブを用いたマルチバンドRF回路設計法;　2015/12
  ANNOUNCEMENT INFO.;　, J98-C, 12, 377-382
  AUTHOR;　
  
• 縦続接続移相器を用いたPush-Push発振器アレー;　2015/12
  ANNOUNCEMENT INFO.;　, J98-C, 12, 453-455
  AUTHOR;　
  
• Magnetic Resonance Type Selective Wireless Power Transfer Using Two Transmission Resonators with Phase Difference;　2015/11
  ANNOUNCEMENT INFO.;　Proc. 2015 Int’l Symp. on Antennas and Propag. (ISAP2015), S4.12.4
  AUTHOR;　Y. Fukushima, E. Nishiyama, and I. Toyoda
  
• Prototype Evaluation of a Beam Tracking Antenna Using Magic-T;　2015/11
  ANNOUNCEMENT INFO.;　Proc. 2015 Int’l Symp. on Antennas and Propag. (ISAP2015), S3.12.1
  AUTHOR;　R. Rashid, E. Nishiyama, and I. Toyoda
  
• Gain Enhancement of a Dual Feed Microstrip Array Antenna Using Parasitic Elements;　2015/11
  ANNOUNCEMENT INFO.;　Proc. 2015 Int’l Symp. on Antennas and Propag. (ISAP2015), S5.9.1
  AUTHOR;　H. Satow, E. Nishiyama, and I. Toyoda
  
• Selective Wireless Power Transfer Using Two Transmission Coils Sandwiching Reception Coils;　2015/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　A. Yoshida, E. Nishiyama, and I. Toyoda
  
• Experimental Study on Load Resistance Design of a Differential Rectenna;　2015/11
  ANNOUNCEMENT INFO.;　Proc. 2015 Int’l Symp. on Antennas and Propag. (ISAP2015), S1.4.1
  AUTHOR;　J. Takahashi, E. Nishiyama, and I. Toyoda
  
• A Study of Automatic Measuring Circuit Suitable for Very Small Phase Difference Measurement;　2015/11
  ANNOUNCEMENT INFO.;　Proc. 2015 Int’l Symp. on Intelligent Signal Processig and Comm. Sys. (ISPACS), 2D-4
  AUTHOR;　T. Noguchi, S. Fukai, I. Toyoda, Y. Ishikawa, and A. Shimizu
  
• A Push-Push Oscillator Array with Very Simple Coupling Circuits Using HEMT;　2015/09
  ANNOUNCEMENT INFO.;　Proc. 45th European Microwave Conference (EuMC2015), EuMC14-04
  AUTHOR;　T. Tanaka, T. Sameshima, and I. Toyoda
  
• Double Balanced Multiplier Integrated Circular Polarization Switchable Microstrip Antenna;　2015/07
  ANNOUNCEMENT INFO.;　2015 IEEE AP-S Symp. on Antennas and Propag. and URSI CNC/USNC Joint Mtg. Dig. (AP-S/URSI 2015), WEP-A1.5A.9, 2239-2240
  AUTHOR;　E. Nishiyama, A. Matsuo, and I. Toyoda
  
• A Differential Rectenna with Matching Shorted Stubs;　2015/06
  ANNOUNCEMENT INFO.;　Proc. 2015 IEEE 4th Asia-Pacific Conf. on Antennas and Propag. (APCAP2015), F1B-2, 445-446
  AUTHOR;　J. Takahashi, E. Nishiyama, and I. Toyoda
  
• Design and parametric analysis of a planar array antenna for circular polarization;　2015/03
  ANNOUNCEMENT INFO.;　Int’l J. Microwave and Wireless Tech., available on CJO2015, doi: 10.1017/S1759078715000264, Mar. 2015.
  AUTHOR;　M. A. Rahman, Q. D. Hossain, M. A. Hossain, E. Nishiyama, and I. Toyoda
  
• A Push-Push Oscillator Array Using Resonator Type Coupling Circuits;　2014/11
  ANNOUNCEMENT INFO.;　Progress In Electromagnetics Research C, 54, 85-94
  AUTHOR;　T. Tanaka, K. Kawasaki, M. Aikawa, and I. Toyoda
  
• 5.8-GHz Series/Parallel Connected Rectenna Array Using Expandable Differential Rectenna Units;　2013/09
  ANNOUNCEMENT INFO.;　IEEE Trans. Antennas & Propag., 61, 9, 4872-4875
  AUTHOR;　T. Sakamoto, Y. Ushijima, E. Nishiyama, M. Aikawa, and I. Toyoda
  
• 5.8-GHz Integrated Differential Rectenna Unit using Both-Sided MIC Technology with Design Flexibility;　2013/06
  ANNOUNCEMENT INFO.;　IEEE Trans. Antennas & Propag., 61, 6, 3357-3360
  AUTHOR;　Y. Ushijima, T. Sakamoto, E. Nishiyama, M. Aikawa, and I. Toyoda
  
• [招待論文]ワイヤレスモジュールの機能高度化へ向けた波動信号処理の一アプローチ;　2012/12
  ANNOUNCEMENT INFO.;　, J95-C, 12, 470-477
  AUTHOR;　
  
• Multi-band orthogonal linear polarization discrimination planar array antenna;　2012/11
  ANNOUNCEMENT INFO.;　Progress In Electromagnetics Research C, 34, 53-67
  AUTHOR;　M. A. Hossain, E. Nishiyama, M. Aikawa, and I. Toyoda
  
• High Gain Linear Polarization Switchable Planar Array Antenna;　2012/05
  ANNOUNCEMENT INFO.;　Progress In Electromagnetic Research C, 30, 65-80
  AUTHOR;　M. A. Hossain, E. Nishiyama, I. Toyoda, and M. Aikawa
  
• Orthogonal Circular Polarization Detection Patch Array Antenna Using Double Balanced RF Multiplier;　2012/05
  ANNOUNCEMENT INFO.;　Progress In Electromagnetic Research C, 30, 93-103
  AUTHOR;　M. A. Hossain, Y. Ushijima, E. Nishiyama, I. Toyoda, and M. Aikawa
  
• Analyses of Antenna Displacement in Short-Range MIMO Transmission over Millimeter-Wave;　2011/10
  ANNOUNCEMENT INFO.;　IEICE Trans. Comm., Vol. E94-B, No. 10, pp.2891-2895, Oct. 2011., E94-B, 10, 2891-2895
  AUTHOR;　K. Hiraga, T. Seki, K. Nishimori, K. Nishikawa, I. Toyoda, K. Uehara
  
• ワイヤレス・パーソナルエリア・ネットワークのシステム設計に適した回転軸対称なビームを持つアンテナモデル;　2010/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 遅延制御による偶数段リング構成ダイナミック1/4N分周器;　2010/02
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• パーソナルエリアネットワークを進化させるミリ波技術と標準化活動;　2007/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Interference Analysis from Impulse Radio UWB Systems using Simple Signal Models;　2005/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　Y. Suzuki, I. Toyoda, and M. Umehira
  
• Software Defined Radio Prototype for PHS and IEEE802.11 Wireless LAN;　2002/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　H. Shiba, T. Shono, Y. Shirato, I.Toyoda, K. Uehara, and M. Umehira
  
• Three-Dimensional MMIC Technology on Silicon: Review and Recent Advances (Invited);　2002/07
  ANNOUNCEMENT INFO.;　
  AUTHOR;　B. Piernas, K. Nishikawa, K. Kamogawa, and I. Toyoda
  
• Three-dimensional MMIC Technology for Low-Cost Millimeter-Wave MMICs;　2001/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　K. Nishikawa, K. Kamogawa, B. Piernas, M. Tokumitsu, S. Sugitani, I. Toyoda, and K. Araki
  
• A Compact V-band 3-D MMIC Single-chip Down-converter Using Photosensitive BCB Dielectric Film;　1999/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　K. Nishikawa, S. Sugitani, K. Inoue, K. Kamogawa, T. Tokumitsu, I. Toyoda, and M. Tanaka
  
• Quick Development of Multifunctional MMICs Using Three-Dimensional Masterslice MMIC Technology (Invited);　1999/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　I. Toyoda, M. Hirano, M. Tokumitsu, Y. Imai, K. Nishikawa, K. Kamogawa, and S. Sugitani
  
• Miniaturized Millimeter-wave Masterslice 3-D MMIC Amplifier and Mixer;　1999/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　K. Nishikawa, K. Kamogawa, K. Inoue, K. Onodera, T. Tokumitsu, M. Tanaka, I. Toyoda, and M. Hirano
  
• Compact and Broadband Three-dimensional MMIC Balun;　1999/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　K. Nishikawa, I. Toyoda, and T. Tokumitsu
  
• A Novel High-Q and Wide-Frequency-Range Inductor Using Si 3-D MMIC technology;　1999/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　K. Kamogawa, K. Nishikawa, I. Toyoda, T. Tokumitsu, and M. Tanaka
  
• Extended Integral Equation Formulation for Scattering Problems from a Cylindrical Scatterer;　1998/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　I. Toyoda, M. Matsuhara and N. Kumagai
  
• Wide-Band Subharmonically Injection-Locked Oscillators using Three-Dimensional MMIC Technology;　1998/06
  ANNOUNCEMENT INFO.;　
  AUTHOR;　K. Kamogawa, I. Toyoda, T. Tokumitsu, and K. Nishikawa
  
• Three-dimensional MMIC Technology For Fully CAD-Compatible MMIC Development;　1998/06
  ANNOUNCEMENT INFO.;　
  AUTHOR;　K. Nishikawa, I. Toyoda, K. Kamogawa, T. Tokumitsu, and M. Tanaka
  
• Three-Dimensional Silicon MMIC's Operating up to K-band;　1998/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　K. Nishikawa, I. Toyoda, K. Kamogawa, and T. Tokumitsu
  
• Three-Dimensional Masterslice MMIC on Si Substrate;　1997/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　I. Toyoda, K. Nishikawa, T. Tokumitsu, K. Kamogawa, C. Yamaguchi, M. Hirano, and M. Aikawa
  
• Wide-Tuning Range Si Bipolar VCO's Based on Three-Dimensional MMIC Technology;　1997/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　K. Kamogawa, K. Nishikawa, C. Yamaguchi, M. Hirano, I. Toyoda, and T. Tokumitsu
  
• Three-Dimensional Interconnect technology for Ultra-Compact MMICs;　1997/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　M. Hirano, K. Nishikawa, I. Toyoda, S. Aoyama, S. Sugitani, and K. Yamasaki
  
• A 20-GHz-Band Subharmonically Injection-Locked Oscillator MMIC with Wide Looking Range;　1997/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　K. Kamogawa, T. Tokumitsu, and I. Toyoda
  
• Miniaturized Three-dimensional MMIC K-band Upconverter;　1997/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　K. Nishikawa, I. Toyoda, and T. Tokumitsu
  
• Highly Integrated Three-Dimensional MMIC Single-Chip Receiver and Transmitter;　1996/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　I. Toyoda, T. Tokumitsu, and M. Aikawa
  
• Folded U-shaped Microwire Technology for Ultra-Compact three-dimensional MMICs;　1996/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　K. Onodera, M. Hirano, M. Tokumitsu, I. Toyoda, K. Nishikawa, and T. Tokumitsu
  
• Miniaturized Wilkinson Power Divider Using Three-Dimensional MMIC Technology;　1996/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　K. Nishikawa, T. Tokumitsu, and I. Toyoda
  
• Three-dimensional Passive Circuit Technology for Ultra-compact MMICs;　1995/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　M. Hirano, K. Nishikawa, I. Toyoda, S. Aoyama, S. Sugitani, and K. Yamasaki
  
• An 11-GHz-Band Subharmonic-Injection-Locked Oscillator MMIC;　1995/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　K. Kamogawa, I. Toyoda, and T. Tokumitsu
  
• Three-dimensional MMIC and Its Application: An Ultra-wideband Miniature Balun;　1995/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　I. Toyoda, M. Hirano, and T. Tokumitsu
  
• A Low-Voltage, High-Power T/R-Switch MMIC Using LC Resonators;　1995/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　T. Tokumitsu, I. Toyoda, and M. Aikawa
  
• Characterization of a Monolithic Slot Antenna using an Electro-Optic Sampling Technique;　1994/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　K. Kamogawa, I. Toyoda, K. Nishikawa, and T. Tokumitsu
  
• A Novel Injection-Locked Oscillator MMIC with Combined Ultrawide-Band Active Combiner/Divider and Amplifiers;　1994/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　T. Tokumitsu, K. Kamogawa, I. Toyoda, and M. Aikawa
  
• Three-Dimensional Passive Elements for Compact GaAs MMICs;　1993/06
  ANNOUNCEMENT INFO.;　
  AUTHOR;　M. Hirano, Y. Imai, I. Toyoda, K. Nishikawa, M. Tokumitsu, and K. Asai
  
• 拡張形積分方程式を用いた3次元電磁波散乱問題の境界要素法解析;　1990/06
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 有限・境界要素結合解析法による電磁波散乱問題の解析;　1989/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 誘電体スラブ線路折れ曲り部の積分方程式法解析;　1988/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 光ファイバ開放端および誘電体ロッドアンテナの電磁界解析;　1986/04
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  

Material, Commentary, Editorials, Research Report, A Comprehensive Journal Articles

• RF Signal Processing with Antenna and Microwave Circuit Integration;　2017/06
  ANNOUNCEMENT INFO.;　IEICE Comm. Soc. Global Newsletter, Vol. 41, No. 2, pp. 6-8, June 2017.
  AUTHOR;　Ichihiko Toyoda
  
• 【論文誌技術解説】大学発マイクロ波論文特集の発刊に寄せて;　2017/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• [巻頭言]大学発マイクロ波論文特集の発行にあたって－より豊かで安全・安心な社会の実現を目指して－;　2016/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• マイクロ波学生設計コンテストにおける優秀学生の育成法;　2016/04
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 平面回路技術と平面アンテナ―機能高度化と小型簡易化に向けた集積化の検討;　2012/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  

General Lectures

• Prediction of Feed Point and Dimensions of Rectangular Microstrip Patch Antennas Using Artificial Neural Network;　2024/03
  ANNOUNCEMENT INFO.;　2024 IEICE General Conf., B-1B-42
  AUTHOR;　J. P. Dhar, M. Hasan, E. Nishiyama, and I. Toyoda
  
• Basic Experiment of Reconfigurable Radiation Pattern Shaping of Microstrip Antenna Using Switchable Parasitic Elements;　2024/03
  ANNOUNCEMENT INFO.;　2024 IEICE General Conf., B-1B-41
  AUTHOR;　M. Hasan, M. Kuroki, E. Nishiyama, and I. Toyoda
  
• Design of Single-Layer Reconfigurable Circularly Polarized Planar Array Antenna With Dual-Pattern Radiation;　2024/03
  ANNOUNCEMENT INFO.;　2024 IEICE General Conf., B-1B-40
  AUTHOR;　H. W. Htun, E. Nishiyama, I. Toyoda
  
• マイクロストリップアンテナの高利得化に向けた２枚の無給電素子配置のシミュレーション検討;　2024/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• ミリ波帯マイクロストリップ線路の準TEM近似をベースとした設計公式のシミュレーション評価;　2024/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Push-Push発振器一体型2倍波出力アクティブパッチアンテナの基礎検討;　2024/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 差動給電アンテナを用いたバランス型アップコンバータ内蔵アクティブアンテナの基礎検討;　2024/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Basic Concept of Novel Low Phase Noise Positive Feedback-Type Push-Push Oscillator Using Differential Bandpass Filter;　2024/03
  ANNOUNCEMENT INFO.;　2024 IEICE General Conf., C-2A-06
  AUTHOR;　E. Lima, T. Tanaka, and I. Toyoda
  
• 十字形スロットとダイオードを装荷した2周波共用直線偏波切り替えマイクロストリップアンテナの試作評価;　2024/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 2倍波半波長マイクロストリップ線路共振器を用いた4相Push-Push発振器の高性能化;　2024/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 共振器両端取出し出力回路を装荷した準分布定数線路共振器を用いたPush-Push VCOの高性能化;　2024/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• チョークコイルを装荷した広角広帯域モノポール型フィルムアンテナの数値的検討;　2024/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• イメージ抑圧型ミキサを一体化した円偏波アクティブアンテナの設計と性能評価;　2024/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• セカント法求根アルゴリズムを用いたモノパルス型3次元ビーム追尾平面アレーアンテナシステムの基礎検討;　2024/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 倍電圧型小型レクテナを用いたレクテナアレーの実験的検討;　2024/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• An Image-Rejection Active Integrated Antenna Utilizing Dual-Feed Circularly Polarized Antenna;　2023/12
  ANNOUNCEMENT INFO.;　Proc. 2023 Asia-Pacific Microw. Conf. (APMC2023), Paper ID: 220341, Taipei, Taiwan
  AUTHOR;　R. Kawasaki, T. Tanaka and I. Toyoda
  
• A Dual-Band Polarization-Switchable Stacked Microstrip Antenna Loading Cross Slot and Diodes;　2023/12
  ANNOUNCEMENT INFO.;　Proc. 2023 Asia-Pacific Microw. Conf. (APMC2023), Paper ID: 220366, Taipei, Taiwan
  AUTHOR;　Y. Ikoma, E. Nishiyama and I. Toyoda
  
• A Branch-Line Coupler Feed MIMO Antenna for Circular Polarization Diversity;　2023/12
  ANNOUNCEMENT INFO.;　Proc. 2023 5th Int. Conf. Telecom. Photon. (ICTP2023), TECH-WC2-3, Paper ID: 54, Dhaka, Bangladesh
  AUTHOR;　M. N. Rahman, M. A. Rahman, M. Hasan, M. A. Hossain, E. Nishiyama, and I. Toyoda
  
• 大規模レクテナアレーのための倍電圧型整流回路を用いた小型レクテナの検討;　2023/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Design of Dual Circularly Polarized Array Antenna with Beam Switching Functionality Using Hybrid Coupler and Phase Shifters;　2023/11
  ANNOUNCEMENT INFO.;　Proc. 2023 Int. Conf. Emerging Techn. Commu. (ICETC2023), O3-2, Sapporo, Japan
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• 車載アンテナに関する位置検討 ～ (II)車内における高さ依存性 ～;　2023/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• A High-Gain Microstrip Antenna Loading Parasitic Element and Horn-Shaped Reflector;　2023/10
  ANNOUNCEMENT INFO.;　Proc. 2023 IEEE Int. Symp. Antennas Propag. (ISAP2023), RS26.5, Kuala Lumpur, Malaysia
  AUTHOR;　K. Motomura, E. Nishiyama, and I. Toyoda
  
• A Single-Feed Array Antenna With Sum- and Difference-Patterns Using Planar Magic-Ts;　2023/10
  ANNOUNCEMENT INFO.;　Proc. 2023 IEEE Int. Symp. Antennas Propag. (ISAP2023), RS18.3, Kuala Lumpur, Malaysia
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• A Reconfigurable Circularly Polarized Electrically Activated Split-Ring Slot Antenna With Simple Bias Decoupling Feed Network;　2023/10
  ANNOUNCEMENT INFO.;　Proc. 2023 IEEE Int. Symp. Antennas Propag. (ISAP2023), RS10.1, Kuala Lumpur, Malaysia
  AUTHOR;　H. W. Htun, M. Hasan, E. Nishiyama, and I. Toyoda
  
• A Reconfigurable Circularly-Polarized Microstrip Antenna With Simple Two-Branch Switchable Feed Network;　2023/10
  ANNOUNCEMENT INFO.;　Proc. 2023 IEEE Int. Symp. Antennas Propag. (ISAP2023), PSP2.3, Kuala Lumpur, Malaysia
  AUTHOR;　D. Huda, M. Hasan, E. Nishiyama, and I. Toyoda
  
• Proposal of Dual Circularly Polarized Array Antenna With Pattern Diversities Using Rat-Race Coupler and Switchable Feed Network;　2023/09
  ANNOUNCEMENT INFO.;　2023 IEICE Society Conf., B-1-66, Sep. 2023
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• Design of Single-Layer Reconfigurable Circularly Polarized Conical-Beam Planar Array Antenna with Switchable Proximity Gap-Coupled Feed Network;　2023/09
  ANNOUNCEMENT INFO.;　2023 IEICE Society Conf., B-1-65, Sep. 2023.
  AUTHOR;　H. W. Htun, E. Nishiyama, and I. Toyoda
  
• 準分布定数線路共振器を用いた4次高調波Push-Push VCOの基礎検討;　2023/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Simulation-Based Parameter Study of High-Gain Microstrip Antenna with Parasitic element and Reflector;　2023/09
  ANNOUNCEMENT INFO.;　Rec. 2023 Joint Conf. Electric., Electron., Info. Eng. in Kyushu, 11-2P-02, Sep. 2023.
  AUTHOR;　K. Motomura, E. Nishiyama, and I. Toyoda
  
• Concept and Basic Evaluation of Active Patch Antenna with Integrated Push-Push Oscillator;　2023/09
  ANNOUNCEMENT INFO.;　Rec. 2023 Joint Conf. Electric., Electron., Info. Eng. in Kyushu, 11-2A-06, Sep. 2023.
  AUTHOR;　H. Tokunaga, M. Hasan, T. Tanaka, and I. Toyoda
  
• Basic Concept of Active Antenna Integrating Balanced Up-Converter and Differential-Feed Microstrip Antenna;　2023/09
  ANNOUNCEMENT INFO.;　Rec. 2023 Joint Conf. Electric., Electron., Info. Eng. in Kyushu, 11-2A-05, Sep. 2023.
  AUTHOR;　S. Araki, M. Hasan, T. Tanaka, and I. Toyoda
  
• Evaluation of Quasi-TEM Based Formulas of Microstrip-Line Parameters for Millimeter-Wave Circuit Design;　2023/09
  ANNOUNCEMENT INFO.;　Rec. 2023 Joint Conf. Electric., Electron., Info. Eng. in Kyushu, 11-2A-04, Sep. 2023.
  AUTHOR;　S. Terasaki, T. Tanaka, and I. Toyoda
  
• 5.8GHz 帯モノパルス型ビーム追尾アンテナの制御実験;　2023/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 準分布定数線路共振器を用いたPush-Push VCOの試作評価;　2023/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Design of Ku-Band Push-Push Oscillator Employing Spiral Microstrip Resonator Array;　2023/03
  ANNOUNCEMENT INFO.;　2023 IEICE General Conf. C-2-21
  AUTHOR;　E. Lima, T. Tanaka, and I. Toyoda
  
• イメージ抑圧ミキサと2給電円偏波アンテナを一体化したダウンコンバージョン型アクティブアンテナの試作評価;　2023/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Experimental Investigation of Reconfigurable Circularly-Polarized Antenna Using Simple Two-Branch Switchable Feed Network;　2023/03
  ANNOUNCEMENT INFO.;　2023 IEICE General Conf. B-1-135
  AUTHOR;　D. Huda, M. Hasan, E. Nishiyama, and I. Toyoda
  
• Proposal of Self-Oscillating Multi-Beam Switchable Active Integrated Array Antenna Using SP4T Switch and Push-Push Oscillator;　2023/03
  ANNOUNCEMENT INFO.;　2023 IEICE General Conf.
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• Design of Reconfigurable Circularly-Polarized Ring-Slot Antenna Employing Switchable Microstrip-Line Coupling Feed Network;　2023/03
  ANNOUNCEMENT INFO.;　2023 IEICE General Conf., B-1-66
  AUTHOR;　H. W. Htun, E, Nishiyama, and I. Toyoda
  
• Proposal of Single-Feed Microstrip Antenna for Quad-Polarization Agility With Short-Ended Microstrip-Line Perturbation;　2023/02
  ANNOUNCEMENT INFO.;　Proc. 3rd Int. Conf. Elec., Comp. Commu. Eng. (ECCE2023)
  AUTHOR;　M. Hasan, H. W. Htun, E. Nishiyama, and I. Toyoda
  
• マジックTのアイソレーション特性を活用した送受兼用円偏波FMCWレーダ用アンテナとミキサの測定評価;　2023/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• トランジスタ発振器を一体化したリングスロットアクティブアレーアンテナの提案;　2023/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Q値解析による無給電素子を装荷した周波数可変マイクロストリップアンテナの特性評価;　2023/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 平面型マジックTと90°ハイブリッドを複合した4×4給電マトリクス回路の提案;　2023/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 高密度アレーアンテナを用いた高出力DCレクテナアレーの実験的評価;　2023/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Loss Analysis of Frequency Tunable Microstrip Antennas Using Wheeler Cap Method;　2022/12
  ANNOUNCEMENT INFO.;　Proc. 2022 IEEE Conf. Antennas Meas. Appl. (CAMA2022)
  AUTHOR;　R. Araki, E. Nishiyama, and I. Toyoda
  
• Design of a Hexad-Polarization Antenna With High Isolation and Switchable Feed Network;　2022/12
  ANNOUNCEMENT INFO.;　Proc. 12th Int. Conf. Elec. Comp. Eng. (ICECE)
  AUTHOR;　M. A. Rahman, M. N. Rahman, M. A. Hossain, M. Hasan, E. Nishiyama, and I. Toyoda
  
• Experimental Study of Single-Feed Dual-Beam Switchable Array Antenna Using PIN Diodes for 5.8-GHz Application;　2022/12
  ANNOUNCEMENT INFO.;　Proc. 7th Int. Conf. Recent Progress Sci., Eng. and Tech. (ICPRSET2022)
  AUTHOR;　N. Akther, M. Hasan, M. A. Hossain, E. Nishiyama, and I. Toyoda
  
• Prototype Evaluation of 5.8-GHz Differential Rectenna Integrating Bridge Rectifier;　2022/11
  ANNOUNCEMENT INFO.;　Proc. 2022 Asia-Pacific Microw. Conf. (APMC2022), 575-577
  AUTHOR;　T. Miyamoto, E. Nishiyama, and I. Toyoda
  
• Experimental Study of Ring-Slot Active Antenna Integrated With Transistor-Based Oscillator;　2022/11
  ANNOUNCEMENT INFO.;　Proc. 2022 Asia-Pacific Microw. Conf. (APMC2022), 130-132
  AUTHOR;　S. Manago, M. Hasan, T. Tanaka, and I. Toyoda
  
• Prototype Evaluation of 5.8-GHz Monopulse Beam Tracking Antenna;　2022/11
  ANNOUNCEMENT INFO.;　Proc. 2022 Asia-Pacific Microw. Conf. (APMC2022), 127-129
  AUTHOR;　S. Toyama, T. Tanaka, and I. Toyoda
  
• A Multi-Beam Array Antenna Employing Simple 4×2Beam-Forming Network Integrating Magic-T and Hybrid Coupler;　2022/10
  ANNOUNCEMENT INFO.;　Proc. 2022 Int. Symp. Antennas Propag. (ISAP2022), 437-438
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• A Beam-Forming Antenna Integrating Magic-T Based Matrix Feed Network;　2022/10
  ANNOUNCEMENT INFO.;　Proc. 2022 Int. Symp. Antennas Propag. (ISAP2022), 433-434
  AUTHOR;　Y. Umeda, E. Nishiyama, and I. Toyoda
  
• A Reconfigurable Circularly-Polarized Ring-Slot Antenna Employing Microstrip-Line Switchable Feed Network;　2022/10
  ANNOUNCEMENT INFO.;　Proc. 2022 Int. Symp. Antennas Propag. (ISAP2022), 47-48
  AUTHOR;　H. W. Htun, M. Hasan, E. Nishiyama, and I. Toyoda
  
• Numerical Study on Broadband Inkjet-Printed Antenna Based on Bow-Tie Antenna for Mobile Phone Cell Extender;　2022/09
  ANNOUNCEMENT INFO.;　Rec. 2022 Joint Conf. Electrical, Electronics and Information Engineers in Kyushu, 07-2A-01
  AUTHOR;　R. Fujimoto, E. Nishiyama, M. Miyashita, K. Tomimoto, R. Yamaguchi, and I. Toyoda
  
• Numerical Study on 5.8-GHz Differential Rectenna Integrating Bridge Rectifier;　2022/09
  ANNOUNCEMENT INFO.;　Rec. 2022 Joint Conf. Electrical, Electronics and Information Engineers in Kyushu, 07-2A-02
  AUTHOR;　T. Miyamoto, E. Nishiyama, and I. Toyoda
  
• Basic Study on Dual-Band Polarization-Switchable Antenna Consisting of Rectangular Ring and Rectangular Patch;　2022/09
  ANNOUNCEMENT INFO.;　Rec. 2022 Joint Conf. Electrical, Electronics and Information Engineers in Kyushu, 07-2A-03
  AUTHOR;　Y. Ikoma, E. Nishiyama, and I. Toyoda
  
• Basic Concept of Down-Conversion Active Integrated Antenna with Image-Rejection Mixer;　2022/09
  ANNOUNCEMENT INFO.;　Rec. 2022 Joint Conf. Electrical, Electronics and Information Engineers in Kyushu, 07-2A-04
  AUTHOR;　R. Kawasaki, T. Tanaka, and I. Toyoda
  
• Evaluation of Control Algorithm for Monopulse Beam Tracking Antenna Using Emulator;　2022/09
  ANNOUNCEMENT INFO.;　Rec. 2022 Joint Conf. Electrical, Electronics and Information Engineers in Kyushu, 07-2A-05
  AUTHOR;　S. Toyama, T. Tanaka, and I. Toyoda
  
• Phase noise improvement of 2nd harmonic Push-Push oscillator by stabilizing resonance field using transmission line resonators;　2022/09
  ANNOUNCEMENT INFO.;　Rec. 2022 Joint Conf. Electrical, Electronics and Information Engineers in Kyushu, 07-2A-06
  AUTHOR;　Y. Takeguchi, T. Tanaka, and I. Toyoda
  
• Basic Study of Push-Push VCO Using Varactor-Loaded Quasi-Distributed-Element Transmission-Line Resonator;　2022/09
  ANNOUNCEMENT INFO.;　Rec. 2022 Joint Conf. Electrical, Electronics and Information Engineers in Kyushu, 07-2A-07
  AUTHOR;　K. Wakakita, M. Hasan, T. Tanaka, and I. Toyoda
  
• 円形スロット開放を用いたMagic-T給電型広帯域円偏波アンテナの高性能化;　2022/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Experimental Study of Single-Feed Dual-Beam Switchable Microstrip Array Antenna Using Planar Magic-Ts;　2022/09
  ANNOUNCEMENT INFO.;　2022 IEICE Society Conf., B-1-51
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• Design of Reconfigurable Circularly-Polarized Microstrip Array Antenna Employing Short-Ended Microstrip-Line Perturbations and Planar Magic-Ts;　2022/09
  ANNOUNCEMENT INFO.;　2022 IEICE Society Conf., B-1-52
  AUTHOR;　H. W. Htun, E. Nishiyama, and I. Toyoda
  
• 大規模高密度DCレクテナアレーの無給電素子低姿勢化のための誘電体挿入に関する検討;　2022/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Study on Loss of Varactor-Loaded Tunable Microstrip Antennas Considering Q Factor;　2022/08
  ANNOUNCEMENT INFO.;　Proc. 2022 IEEE Int. Symp. Radio-Freq. Integ. Techn. (RFIT2022), W2B.4, Busan, Korea
  AUTHOR;　E. Nishiyama, R. Araki, and I. Toyoda
  
• Design of Simple 4 × 2 Beam-Forming Network for Four-Beam Array Antenna;　2022/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• Design of 2.4-GHz Reconfigurable Circularly Polarized Square Ring Slot Antenna Employing Microstrip-Line Switchable Feed Network;　2022/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　H. W. Htun, E. Nishiyama, and I. Toyoda
  
• 平面型Magic-Tを用いた給電マトリクス回路の提案;　2022/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 大規模高密度レクテナアレーの性能向上に向けた無給電素子配置に関する検討;　2022/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• トランジスタ発振器を用いたリングスロットアクティブアンテナの基礎検討;　2022/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Q値解析による周波数可変マイクロストリップアンテナの損失に関する数値的評価;　2022/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 2点給電型円偏波アンテナのMagic-Tを用いた広帯域化;　2022/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 能動リング共振器を用いた帰還型2次高調波出力発振器の位相雑音改善に関する試作評価;　2022/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 八木・宇田アンテナを用いた大規模レクテナアレーのためのアレー間隔に関する実験的検討;　2022/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• スロット結合方向性結合器を給電回路に応用したデュアルビーム円偏波共用マイクロストリップアンテナの設計;　2022/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• マイクロストリップ線路とコプレーナストリップ線路で構成した平面型Magic-Tの広帯域化;　2022/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• A Gunn Diode Based Self-Oscillating Active Integrated Array Antenna With a Concept for Beamwidth Controllability;　2021/12
  ANNOUNCEMENT INFO.;　2021 IEEE Int. Conf. Telecom. Photon. (ICTP2021)
  AUTHOR;　M. A. Rahman, M. Hasan, E. Nishiyama, and I. Toyoda
  
• A Wideband Double-Balanced Multiplier Integrated Circular-Polarization Switchable Microstrip Antenna with Parasitic Elements;　2021/12
  ANNOUNCEMENT INFO.;　2021 Int. Conf. Emerg. Tech. Comm. (ICETC2021)
  AUTHOR;　T. Kayashima, E. Nishiyama, and I. Toyoda
  
• マイクロストリップ線路装荷による反射型Push-Push発振器の位相雑音低減;　2021/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• A High Noise Immunity Monopulse Direction of Arrival Estimation Antenna for Vehicle Tracking;　2021/10
  ANNOUNCEMENT INFO.;　2021 Int. Symp. Antennas Propag. (ISAP 2021)
  AUTHOR;　Y. Umeda, E. Nishiyama, I. Toyoda, M. Miyashita, K. Tomimuro, and Ryo Yamaguchi
  
• Parameter Study of Dual-Band Array Antenna for Stacked Differential Rectenna Arrays;　2021/10
  ANNOUNCEMENT INFO.;　2021 Int. Symp. Antennas Propag. (ISAP 2021)
  AUTHOR;　K. Saito, E. Nishiyama, and I. Toyoda
  
• Densely Arranged Array Antenna for High Output DC Power Rectenna Arrays;　2021/10
  ANNOUNCEMENT INFO.;　2021 Int. Symp. Antennas Propag. (ISAP 2021)
  AUTHOR;　T. Kichiji, E. Nishiyama, and I. Toyoda
  
• Numerical Study of Array Arrangement in High-Density Array Antenna for Large-Scale Rectenna Arrays;　2021/09
  ANNOUNCEMENT INFO.;　2021 Joint Conf. Electrical, Electronics and Information Engineers in Kyushu, 06-2P-06
  AUTHOR;　T. Kichiji, E. Nishiyama, and I. Toyoda
  
• Numerical Evaluation of Loss Factors in Frequency Tunable Microstrip Antenna Loading Diodes;　2021/09
  ANNOUNCEMENT INFO.;　2021 Joint Conf. Electrical, Electronics and Information Engineers in Kyushu, 06-2P-07
  AUTHOR;　R. Araki, E. Nishiyama, and I. Toyoda
  
• Experimental Study of Active Antenna Integrated With Transistor-Based Oscillator;　2021/09
  ANNOUNCEMENT INFO.;　2021 Joint Conf. Electrical, Electronics and Information Engineers in Kyushu, 06-2P-08
  AUTHOR;　S. Manago, T. Tanaka, and I. Toyoda
  
• Numerical Study on Wide-Angle Monopulse Microstrip Antenna Using High-Permittivity Substrate;　2021/09
  ANNOUNCEMENT INFO.;　2021 Joint Conf. Electrical, Electronics and Information Engineers in Kyushu, 06-2P-09
  AUTHOR;　Y. Umeda, E. Nishiyama, and I. Toyoda
  
• 寄生素子を装荷した二重平衡乗算器複合型広帯域円偏波切替マイクロストリップアンテナの基礎検討;　2021/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• オフセット給電入力振幅比制御型モノパルス方式指向性可変円偏波アレーアンテナの試作評価;　2021/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Design of Tri-State SPDT Switch Using Shunt Open Stub Resonator;　2021/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• Push-Push発振器を能動共振器として用いた 4 次高調波出力正帰還型発振器の位相雑音特性の試作評価;　2021/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• コプレーナストリップ線路を用いた平面型Magic-Tの広帯域化の検討;　2021/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Designing of a Both-Sided MIC Starfish Microstrip Array Antenna for K-Band Application;　2021/08
  ANNOUNCEMENT INFO.;　Proc. 2021 IEEE Region 10 Symp. (TENSYMP 2021), OS-05-01, Jeju, Korea (Hybrid), Aug. 2021.
  AUTHOR;　A. H. Murshed, M. A. Hossain, M. A. Rahman, E. Nishiyama, and I. Toyoda
  
• Improvement of Phase Noise Characteristics of Reflective Type Push-Push Oscillator by Using Microstrip-Line Resonators;　2021/08
  ANNOUNCEMENT INFO.;　2021 IEEE Int. Symp. Antenna Tech. Appl. Electromag. (ANTEM2021), Winnipeg, Canada (Online), Aug. 2021.
  AUTHOR;　T. Tanaka, S. Kikutake, and I. Toyoda
  
• Proposal of Pattern-Reconfigurable Self-Oscillating Active Array Antenna Integrating Slot-Line Gunn Oscillator and Hybrid Coupler;　2021/08
  ANNOUNCEMENT INFO.;　Proc. 2021 Int. Conf. Sci. Contemporary Tech. (ICSCT2021), D2-P3S1-1, Dhaka, Bangladesh (Online), Aug. 2021.
  AUTHOR;　M. Hasan, E. Nishiyama, T. Tanaka, and I. Toyoda
  
• Proposal of Polarization Agile Active Array Antenna Integrated with Gunn Oscillator and Diode-Loaded Cross Slots;　2021/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　M. Hasan, R. Moroishi, E. Nishiyama, and I. Toyoda
  
• 線状無給電素子を用いたマイクロストリップアンテナの放射パターン整形に関する検討;　2021/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• コプレーナストリップ線路を用いた低損失Magic-T を組み込んだモノパルスマイクロストリップアンテナの設計;　2021/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 2 周波共用ディファレンシャルレクテナのための5.8GHz 帯放射パターン整形に関する検討;　2021/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• ダイオードを用いた円偏波切り替えマイクロストリップアンテナの必要摂動量のシミュレーション解析;　2021/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 2逓倍注入回路を用いた正帰還型Push-Push発振器の位相雑音特性の改善;　2021/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Magic-T型可変電力分配器を用いた偏波角連続的可変アンテナの試作評価;　2021/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 偏波可変アンテナの4つの共振モードの励振とそのスイッチングを実現するための回路の設計;　2021/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• A Microstrip-Line Gunn Oscillator Loaded Active Integrated Array Antenna Using Inclined Patches for Polarization Switching Function;　2021/01
  ANNOUNCEMENT INFO.;　Proc. 2020 Int. Symp. Antennas Propag. (ISAP2020), pp. 797-798, Osaka, Japan (Virtual), Jan. 2021.
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• A Reconfigurable Circularly Polarized Microstrip Antenna with Short-Ended Microstrip Line Perturbations;　2021/01
  ANNOUNCEMENT INFO.;　Proc. 2020 Int. Symp. Antennas Propag. (ISAP2020), pp. 723-724, Osaka, Japan (Virtual), Jan. 2021.
  AUTHOR;　H. W. Htun, E. Nishiyama, and I. Toyoda
  
• Experimental Study on Dual-Band Differential Rectenna with Stacked Antenna Configuration;　2021/01
  ANNOUNCEMENT INFO.;　Proc. 2020 Int. Symp. Antennas Propag. (ISAP2020), pp. 829-830, Osaka, Japan (Virtual), Jan. 2021.
  AUTHOR;　K. Saito, E. Nishiyama, and I. Toyoda
  
• Novel Simulation Approach to Microstrip Antenna Integrated with Nonlinear Circuit;　2021/01
  ANNOUNCEMENT INFO.;　Proc. 2020 Int. Symp. Antennas Propag. (ISAP2020), pp. 187-188, Osaka, Japan (Virtual), Jan. 2021.
  AUTHOR;　T. Kayashima, E. Nishiyama, and I. Toyoda
  
• Prototype Evaluation of Monopulse Beam Steering Circularly Polarized Array Antenna;　2021/01
  ANNOUNCEMENT INFO.;　Proc. 2020 Int. Symp. Antennas Propag. (ISAP2020), pp. 491-492, Osaka, Japan (Virtual), Jan. 2021.
  AUTHOR;　D. Iwamoto, E. Nishiyama, and I. Toyoda
  
• A Quad-Polarization Agile Microstrip Antenna with Diode Loaded Cross Slot and Microstrip Line;　2021/01
  ANNOUNCEMENT INFO.;　Proc. 2020 Int. Symp. Antennas Propag. (ISAP2020), pp. 493-494, Osaka, Japan (Virtual), Jan. 2021.
  AUTHOR;　R. Moroishi, E. Nishiyama, and I. Toyoda
  
• Experimental Study on 2-Element Rectenna Array Using Yagi-Uda Antenna;　2021/01
  ANNOUNCEMENT INFO.;　Proc. 2020 Int. Symp. Antennas Propag. (ISAP2020), pp. 521-522, Osaka, Japan (Virtual), Jan. 2021.
  AUTHOR;　S. Egashira, E. Nishiyama, and I. Toyoda
  
• Phase Noise Improvement of Multi-Element Push-Push Oscillator Using Electric and Magnetic Field Couplings;　2020/12
  ANNOUNCEMENT INFO.;　Proc. 2020 Asia-Pacific Microw. Conf. (APMC2020), pp. 510-512, Hong Kong SAR, PR China (Virtual), Dec. 2020.
  AUTHOR;　R. Kikuchi, T. Tanaka, and I. Toyoda
  
• A Novel Miniature Rectenna Integrating Rectifier in Antenna Element for Large-Scale Rectenna Arrays;　2020/12
  ANNOUNCEMENT INFO.;　Proc. 2020 Asia-Pacific Microw. Conf. (APMC2020), pp. 782-784, Hong Kong SAR, PR China (Virtual), Dec. 2020.
  AUTHOR;　K. Saito, H. Satow, E. Nishiyama, and I. Toyoda
  
• Basic concept of dual-band differential rectenna for 2.45- and 5.8- GHz Wireless Power Transfer;　2020/12
  ANNOUNCEMENT INFO.;　Proc. 2020 Int. Conf. Emerg. Tech. for Comm. (ICETC2020), A3-3, Dec. 2020.
  AUTHOR;　K. Saito, E. Nishiyama, and I. Toyoda
  
• Design of Dual-Beam Switchable Self-Oscillating Active Array Antenna Integrating Positive Feedback Type Push-Push Oscillator and PSK Modulator;　2020/12
  ANNOUNCEMENT INFO.;　Proc. 2020 Int. Conf. Emerg. Tech. for Comm. (ICETC2020), A4-5, Dec. 2020.
  AUTHOR;　M. Hasan, E. Nishiyama, T. Tanaka and I. Toyoda
  
• [Invited Lecture] Research and Development Activities of Active Integrated Antenna for Polarization and Beam Switching Functions;　2020/11
  ANNOUNCEMENT INFO.;　IEICE Tech. Mtg. on Short Range Wireless Communications (SRW), SRW2020-35, Nov. 2020.
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• 二重平衡乗算器複合型直交モード共振器のための電磁界解析・回路解析連携シュミュレーションの検討;　2020/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Design of Beam Steering Circularly Polarized Antenna With Offset Feed Amplitude Control;　2020/09
  ANNOUNCEMENT INFO.;　Rec. 2020 Joint Conf. Electrical, Electronics and Information Engineers in Kyushu, 08-2P-06, Sep. 2020.
  AUTHOR;　D. Iwamoto, E. Nishiyama, and I. Toyoda
  
• Novel Simulation Approach to Orthogonal Dual-Mode Resonator Integrated with Nonlinear Circuit;　2020/09
  ANNOUNCEMENT INFO.;　Rec. 2020 Joint Conf. Electrical, Electronics and Information Engineers in Kyushu, 08-2P-02, Sep. 2020.
  AUTHOR;　T. Kayashima, E. Nishiyama, and I. Toyoda
  
• Basic Study of Planar Rectenna Employing Yagi-Uda Antenna for High-Power Rectenna Arrays;　2020/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　S. Egashira, E. Nishiyama, and I. Toyoda
  
• Prototype Evaluation of a Low-Loss Magic-T Employing Microstrip Lines and a Coplanar Strip Line With DGS;　2020/09
  ANNOUNCEMENT INFO.;　Rec. 2020 Joint Conf. Electrical, Electronics and Information Engineers in Kyushu, 08-2A-04, Sep. 2020.
  AUTHOR;　H. Nakahara, T. Tanaka, and I. Toyoda
  
• Phase Noise Improvement of Push-Push Oscillators by Using Four Sub-Oscillators;　2020/09
  ANNOUNCEMENT INFO.;　Rec. 2020 Joint Conf. Electrical, Electronics and Information Engineers in Kyushu, 08-2A-03, Sep. 2020.
  AUTHOR;　R. Kikuchi, T. Tanaka, and I. Toyoda
  
• Design of a Beam Switchable Self-Oscillating Active Integrated Array Antenna Using a Microstrip Line Gunn Oscillator and Planar Magic-Ts;　2020/09
  ANNOUNCEMENT INFO.;　2020 IEICE Society Conf. B-1-92, Sep. 2020.
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• 2周波共用ディファレンシャルレクテナのためのアレーアンテナの基本コンセプトの提案;　2020/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 大規模レクテナアレーのためのアンテナ素子に整流回路を組み込んだ新構造小型レクテナの基礎検討;　2020/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 広帯域平面型Magic-Tを用いた周波数可変バランの設計;　2020/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 長方形DGSを装荷した平面型低損失Magic-Tの設計;　2020/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 入力振幅比制御型指向性可変アレーアンテナのための90°ハイブリッドを用いた可変電力分配器の試作評価;　2020/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 入力振幅比制御型指向性可変円偏波アレーアンテナの設計;　2020/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Design of a 5G Compatible Two-Element Dual-Band Circularly Polarized MIMO Antenna;　2019/12
  ANNOUNCEMENT INFO.;　Proc. 2019 Asia-Pacific Microwave Conference (APMC2019), pp. 1087-1089
  AUTHOR;　S. Chakraborty, M. A. Rahman, M. A. Hossain, E. Nishiyama, and I. Toyoda
  
• Phase Noise Improvement of a Fourth-Harmonic Push-Push Oscillator Using a Ring Resonator With Additional Microstrip-Line Resonators;　2019/12
  ANNOUNCEMENT INFO.;　Proc. 2019 Asia-Pacific Microwave Conference (APMC2019), pp. 1915-1917
  AUTHOR;　K. Tokumaru, T. Tanaka, and I. Toyoda
  
• Magic-Tを用いた可変電力分配器の試作評価と偏波角可変アンテナへの応用;　2019/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Magic-Tをスイッチング回路に用いた十字スロットダイオード装荷型円偏波切り替えマイクロストリップアレーアンテナの基礎実験;　2019/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 両平面回路を用いた円偏波マイクロストリップアレーアンテナの低交差偏波特性の検証;　2019/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Experimental Investigation of a Reconfigurable Circularly Polarized Microstrip Antenna Employing Switchable Short-End Microstrip-Line Perturbations;　2019/11
  ANNOUNCEMENT INFO.;　IEICE Tech. Rep. Antennas and Propagation
  AUTHOR;　H. W. Htun, E. Nishiyama, and I. Toyoda
  
• 低電力密度環境に対応した積層型ディファレンシャルレクテナの試作評価;　2019/11
  ANNOUNCEMENT INFO.;　電子情報通信学会アンテナ・伝播研究会
  AUTHOR;　
  
• Design and Performance Studies of a MIMO Antenna With Circular Polarization Diversity for 5G Applications;　2019/09
  ANNOUNCEMENT INFO.;　Proc. 2019 5th Int’l Conf. Advanced in Electrical Engineering (ICAEE2019)
  AUTHOR;　S. Chakaraborty, M. A. Rahman, M. A. Hossain, A. T. Mobashsher, E. Nishiyama, and I. Toyoda
  
• Design of a Reconfigurable Circularly Polarized Microstrip Antenna Employing Switchable Short-End Microstrip-Line Perturbations;　2019/09
  ANNOUNCEMENT INFO.;　Rec. 2019 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu
  AUTHOR;　H. W. Htun, E. Nishiyama, and I. Toyoda
  
• Numerical Evaluation of Cross-Polarization Suppression for Circularly Polarized Microstrip Array Antennas;　2019/09
  ANNOUNCEMENT INFO.;　Rec. 2019 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu
  AUTHOR;　R. Oshige, E. Nishiyama, and I. Toyoda
  
• Experimental Evaluation of a Low Phase Noise Positive Feedback Push-Push Oscillator Using Injection Locking Technique;　2019/09
  ANNOUNCEMENT INFO.;　Rec. 2019 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu
  AUTHOR;　K. Tokumaru, T. Tanaka, and I. Toyoda
  
• Concept and Design of a Variable Power Divider Employing a Magic-T and Phase Shifter;　2019/09
  ANNOUNCEMENT INFO.;　Rec. 2019 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu
  AUTHOR;　N. Morita, T. Tanaka, and I. Toyoda
  
• 直交励振モードを活用したアレーアンテナの原理と展開に関する考察;　2019/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Magic-Tをスイッチング回路に用いた十字スロットダイオード装荷型円偏波切り替えマイクロストリップアレーアンテナの設計;　2019/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Proposal of a Planar Polarization Switchable Self-Oscillating Active Integrated 2×2 Array Antenna with a Microstrip Gunn Oscillator and PSK Modulators;　2019/09
  ANNOUNCEMENT INFO.;　2019 IEICE Society Conf.
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• A Polarization Agile Self-Oscillating Active Integrated 2×2 Array Antenna Using PSK Modulators;　2019/08
  ANNOUNCEMENT INFO.;　Proc. 8th Asia-Pacific Conf. Antennas Propag. (APCAP2019)
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• Design of a Miniaturized Polarization Agile Self-Oscillating Ring-Slot Active Integrated Antenna for Short Range Wireless Communications;　2019/06
  ANNOUNCEMENT INFO.;　IEICE Tech. Rep. Short Range Wireless Communications
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• Proposal of a Polarization Switchable Active Array Antenna Integrating a Single-Lambda Slot-Ring Gunn Oscillator and PSK Modulator;　2019/03
  ANNOUNCEMENT INFO.;　2019 IEICE General Conf., B-1-43, Mar. 2019.
  AUTHOR;　M. Hasan, E. Nishiyama, and I. Toyoda
  
• Experimental Study of a Circularly Polarized Dual-Axis Dual-Beam Array Antenna Employing Dual-Feed Network;　2019/03
  ANNOUNCEMENT INFO.;　2019 IEICE General Conf., B-1-44 Mar. 2019.
  AUTHOR;　T. P. Phyoe, E. Nishiyama, and I. Toyoda
  
• Prototype Evaluation of a Low Phase Noise Push-Push Oscillator Using Dual-Feedback Sub-Oscillators and a Microstrip Ring Resonator;　2019/03
  ANNOUNCEMENT INFO.;　2019 IEICE General Conf., C-2-5, Mar. 2019.
  AUTHOR;　E. N. Lima, T. Tanaka, and I. Toyoda
  
• 45°傾けたアンテナ素子へのマジックTを用いた直交給電による円偏波共用アレーアンテナの測定評価;　2019/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 平面型Magic-Tを用いたバランの基礎検討と可変移相バランへの応用;　2019/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 2種類の電圧を供給可能なマイクロストリップ－スロット十字分岐を用いた平面レクテナの試作検討;　2019/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 平面形ガン発振器設計用ガンダイオードモデルの検討;　2019/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• A 5.8-GHz Dual-Axis Monopulse Microstrip Array Antenna Using Dual-Feed Network;　2018/11
  ANNOUNCEMENT INFO.;　Proc. 2018 Asia-Pacific Microwave Conf. (APMC2018), FR3-IF-24, Kyoto, Japan, Nov. 2018.
  AUTHOR;　T. P. Phyoe, E. Nishiyama, and I. Toyoda
  
• A Polarization Switchable Active Array Antenna Integrating a Multiport Oscillator and PSK Modulators;　2018/11
  ANNOUNCEMENT INFO.;　Proc. 2018 Asia-Pacific Microwave Conf. (APMC2018), FR3-B1-2, Kyoto, Japan, Nov. 2018.
  AUTHOR;　M. Hasan, H. Ushiroda, E. Nishiyama, and I. Toyoda
  
• Phase Noise Improvement of a Ku-Band Push-Push Oscillator Using Injection Locking via Two Magnetic Coupling Points;　2018/11
  ANNOUNCEMENT INFO.;　Proc. 2018 Asia-Pacific Microwave Conf. (APMC2018), TH1-IF-3, Kyoto, Japan, Nov. 2018.
  AUTHOR;　E. N. Lima, T. Tanaka, and I. Toyoda
  
• A High Efficiency Differential Rectenna Employing Two-Parasitic-Element Stacked Antenna;　2018/11
  ANNOUNCEMENT INFO.;　Proc. 2018 Asia-Pacific Microwave Conf. (APMC2018), WE2-C2-4, Kyoto, Japan, Nov. 2018.
  AUTHOR;　K. Yasuda, E. Nishiyama, and I. Toyoda
  
• A Mutual Phase Synchronization Type Push-Push Oscillator Array Using Fourth-Harmonic Push-Push Oscillators;　2018/11
  ANNOUNCEMENT INFO.;　Proc. 2018 Asia-Pacific Microwave Conf. (APMC2018), WE1-IF-7, Kyoto, Japan, Nov. 2018.
  AUTHOR;　N. Takeda, T. Tanaka, and I. Toyoda
  
• (Invited) Active Integrated Array Antenna with Oscillation and Modulation Function for Spatial Modulation Wireless Communications;　2018/10
  ANNOUNCEMENT INFO.;　Proc. 12th Asia-Pacific Engineering Research Forum on Microwaves and Electromagnetic Theory (APMET2018), pp.131-137, Fukuoka, Japan, Oct. 2018.
  AUTHOR;　I. Toyoda, E. Nishiyama, and T. Tanaka
  
• (Invited) Push-Push Oscillator Arrays Using Unilateral Coupling Circuits and Mutual Coupling Circuit;　2018/10
  ANNOUNCEMENT INFO.;　Proc. 12th Asia-Pacific Engineering Research Forum on Microwaves and Electromagnetic Theory (APMET2018), pp.131-137, Fukuoka, Japan, Oct. 2018.
  AUTHOR;　T. Tanaka and I. Toyoda
  
• (Invited) Monopulse DOA Estimation Microstrip Array Antennas Integrated with Magic-Ts;　2018/10
  ANNOUNCEMENT INFO.;　Proc. 12th Asia-Pacific Engineering Research Forum on Microwaves and Electromagnetic Theory (APMET2018), pp.97-104, Fukuoka, Japan, Oct. 2018.
  AUTHOR;　E. Nishiyama and I. Toyoda
  
• A Novel Ku-Band Push-Push Oscillator with an Improved Synchronization Mechanism;　2018/09
  ANNOUNCEMENT INFO.;　2018 IEICE Society Conf., C-2-10, Sep. 2018.
  AUTHOR;　E. N. Lima, T. Tanaka, and I. Toyoda
  
• Basic Evaluation of a Coupled Slot-Ring Gunn Oscillator Array for Active Antennas;　2018/09
  ANNOUNCEMENT INFO.;　2018 IEICE Society Conf., C-2-9, Sep. 2018.
  AUTHOR;　M. Hasan, E. Nishiyama, T. Tanaka, and I. Toyoda
  
• Experimental Investigation of a Dual-Axis Monopulse Microstrip Array Antenna Employing a Slot-T Type Planar Magic-T;　2018/09
  ANNOUNCEMENT INFO.;　2018 IEICE Society Conf., B-1-123, Sep. 2018.
  AUTHOR;　T. P. Phyoe, E. Nishiyama, and I. Toyoda
  
• Design of a Variable Attenuation Balun Employing a Planar Magic-T;　2018/09
  ANNOUNCEMENT INFO.;　Rec. 2018 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 13-2P-05, Sep. 2018.
  AUTHOR;　T. Kitamura, T. Tanaka, and I. Toyoda
  
• Design of a Magic-T Integrated Dual Circularly Polarized Array Antenna With Quadrature-Fed Inclined Patches;　2018/09
  ANNOUNCEMENT INFO.;　Rec. 2018 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 13-2P-04, Sep. 2018.
  AUTHOR;　H. Uchiyama, T. P. Phyoe, E. Nishiyama, and I. Toyoda
  
• Ground Plane Size Effect on a Differential Rectenna With Two Parasitic Elements;　2018/09
  ANNOUNCEMENT INFO.;　Rec. 2018 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 13-2P-03, Sep. 2018.
  AUTHOR;　K. Yasuda, E. Nishiyama, and I. Toyoda
  
• A Ku-Band Injection-Locked Push-Push Oscillator Using Two-Wavelength Ring Resonator;　2018/09
  ANNOUNCEMENT INFO.;　Proc. 48th European Microwave Conf. (EuMC2018), pp. 1325-1328, Madrid, Spain, Sep. 2018.
  AUTHOR;　E. N. Lima, T. Tanaka, and I. Toyoda
  
• Experimental Study on Performance Improvement of a DBM Integrated Circularly Polarized Microstrip Antenna Using Stacked Structure;　2018/08
  ANNOUNCEMENT INFO.;　2018 Progress In Electromagnetics Research Symp. Abstracts (PIERS2018), p. 620, Toyama, Japan, Aug. 2018.
  AUTHOR;　E. Nishiyama, T. Ino, and I. Toyoda
  
• Quadrature Hybrid Integrated Dual-Circularly Polarized Array Antenna;　2018/08
  ANNOUNCEMENT INFO.;　Proc. 2018 IEEE 7th Asia-Pacific Conf. Antennas Propag. (APCAP2018), M4B-4, pp. 164-165, Auckland New Zealand, Aug. 2018.
  AUTHOR;　M. A. Rahman, E. Nishiyama, and I. Toyoda
  
• Multi-Port Push-Push Oscillator for Mutually Synchronized Oscillator Array;　2018/08
  ANNOUNCEMENT INFO.;　2018 18th Int’l Symp. Antenna Technology and Applied Electromagnetics (ANTEM2018), WE3D-1, Waterloo, ON, Canada, Aug. 2018.
  AUTHOR;　T. Tanaka, T. Fukushima, and I. Toyoda
  
• Functional Microstrip Array Antenna Integrating Double-Sided MIC’s;　2018/08
  ANNOUNCEMENT INFO.;　2018 IEEE Int’l Workshop Electromagnetics: Applications and Student Innovation Competition (iWEM2018), TP2.3, Nagoya, Aichi, Japan, Aug. 2018.
  AUTHOR;　E. Nishiyama and I. Toyoda
  
• A Circularly Polarized Triple-Feed Multi-Beam Array Antenna Using Planar Magic-Ts;　2018/07
  ANNOUNCEMENT INFO.;　2018 IEEE AP-S Symp. Antennas and Propag. and URSI CNC/USNC Joint Mtg. (AP-S/URSI 2018), MO-A1.8A.4, pp. 175-176, Boston, MA, USA, July 2018.
  AUTHOR;　T. P. Phyoe, E. Nishiyama, and I. Toyoda
  
• Experimental Evaluation of a Circularly Polarized Dual-Axis Wide-Angle Rectenna Employing a Dual-Feed Network and Inclined Patches;　2018/06
  ANNOUNCEMENT INFO.;　IEICE Tech. Rep. Wireless Power Transfer, WPT2018-12, June 2018.
  AUTHOR;　T. P. Phyoe, E. Nishiyama, and I. Toyoda
  
• Rectenna Application of a Quadrature Hybrid Integrated Microstrip Antenna for Multi-Polarization Reception;　2018/06
  ANNOUNCEMENT INFO.;　IEICE Tech. Rep. Wireless Power Transfer, WPT2018-11, June 2018.
  AUTHOR;　M. A. Rahman, E. Nishiyama, and I. Toyoda
  
• 2枚の無給電素子を装荷した高利得アンテナのレクテナへの応用;　2018/06
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Design of a 5.8-GHz Circularly Polarized Triple-Feed Array Antenna Using Planar Magic-Ts;　2018/03
  ANNOUNCEMENT INFO.;　2018 IEICE General Conf., B-1-70, Mar. 2018.
  AUTHOR;　T. P. Phyoe, E. Nishiyama, and I. Toyoda
  
• Design of a Wideband Dual-Polarized Microstrip Array Antenna;　2018/03
  ANNOUNCEMENT INFO.;　2018 IEICE General Conf., B-1-71, Mar. 2018.
  AUTHOR;　M. A. Rahman, E. Nishiyama, and I. Toyoda
  
• Simulated and Measured Performance of a Gunn-Oscillator Integrated 12-Patch Active Array Antenna With Polarization Switching;　2018/03
  ANNOUNCEMENT INFO.;　2018 IEICE General Conf., B-1-72, Mar. 2018.
  AUTHOR;　M. Hasan, H. Ushiroda, E. Nishiyama, and I. Toyoda
  
• リング共振器を用いた3ポート4次高調波Push-Push発振器の実験的検討;　2018/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Prototype Evaluation of a Novel Ku-Band Push-Push Oscillator Using Dual-Feedback Sub-Oscillators;　2018/03
  ANNOUNCEMENT INFO.;　2018 IEICE General Conf., C-2-7, Mar. 2018.
  AUTHOR;　E. N. Lima, T. Tanaka, and I. Toyoda
  
• 偏波変調器とガン発振器を一体化した12素子アクティブアレーアンテナの特性検討;　2018/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• リング共振器を用いたマルチポート4次高調波Push-Push発振器の基礎検討;　2018/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• スロットリング共振器を用いた3ポートPush-Push発振器の特性評価;　2018/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 二重平衡型乗算器を複合した円偏波アンテナの特性改善に関する検討;　2018/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　伊野孝宏，西山英輔，豊田一彦
  
• Design of a Dual-Axis Wide-Angle Rectenna With Matching Networks;　2017/12
  ANNOUNCEMENT INFO.;　Proc. 8th Int’l Conf. Science and Eng. 2017 (ICSE2017), pp. 395-398, Yangon, Myanmar, Dec. 2017.
  AUTHOR;　T. P. Phyoe, E. Nishiyama, and I. Toyoda
  
• 偏波切替え機能を有するガン発振器一体型4素子パッチアクティブアレーアンテナの試作検討;　2017/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Experimental Study on Nonlinear Characteristics of a DBM Integrated Circularly Polarized Microstrip Antenna;　2017/11
  ANNOUNCEMENT INFO.;　Progress In Electromagnetics Research Symposium Abstracts (PIERS2017), p. 600, Singapore, Nov. 2017.
  AUTHOR;　E. Nishiyama, T. Ino, and I. Toyoda
  
• Experimental Study of Double-Balanced-Multiplier Integrated Circularly Polarized Microstrip Antenna With Nonlinear Characteristics;　2017/10
  ANNOUNCEMENT INFO.;　Proc. 2017 Int’l Symp. Antennas and Propag. (ISAP2017), 3D2-1, Phuket, Thailand, Oct. 2017.
  AUTHOR;　E. Nishiyama, T. Ino, and I. Toyoda
  
• A Dual-Axis Wide-Angle Rectenna Using a Triple-Feed Array Antenna;　2017/10
  ANNOUNCEMENT INFO.;　Proc. 2017 Int’l Symp. Antennas and Propag. (ISAP2017), 2B4-2, Phuket, Thailand, Oct. 2017.
  AUTHOR;　T. P. Phyoe, H. Satow, E. Nishiyama, and I. Toyoda
  
• A Circular Polarization Antenna With Square Ring Slot Loaded on Ground Plane;　2017/10
  ANNOUNCEMENT INFO.;　Proc. 2017 Int’l Symp. Antennas and Propag. (ISAP2017), POS3-18, Phuket, Thailand, Oct. 2017.
  AUTHOR;　M. A. Rahman, E. Nishiyama, and I. Toyoda
  
• Basic Study of a Fourth Harmonic Push-Push Oscillator Using a Microstrip Line Resonator;　2017/09
  ANNOUNCEMENT INFO.;　Rec. 2017 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 10-2A-03, Sep. 2017.
  AUTHOR;　N. Takeda, T. Tanaka, and I. Toyoda
  
• Design of an Injection Circuit for Sub-Harmonic Injection Locked Gunn Oscillators;　2017/09
  ANNOUNCEMENT INFO.;　Rec. 2017 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 10-2A-04, Sep. 2017.
  AUTHOR;　D. Shimizu, T. Tanaka, and I. Toyoda
  
• Proposal of a Low Phase Noise Push-Push Oscillator Using Dual-Feedback Sub-Oscillators;　2017/09
  ANNOUNCEMENT INFO.;　Rec. 2017 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 10-2A-05, Sep. 2017.
  AUTHOR;　E. N. Lima, T. Tanaka, and I. Toyoda
  
• 両平面回路技術によるマイクロストリップアレーアンテナの機能化;　2017/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　西山英輔，豊田一彦
  
• Performance Comparison of Conical/Pencil Dual-Beam Array Antennas Using Two Different Types of Planar Magic-Ts;　2017/09
  ANNOUNCEMENT INFO.;　Proc. 2017 IEICE Society Conf., B-1-74, Sep. 2017.
  AUTHOR;　T. P. Phyoe, E. Nishiyama, and I. Toyoda
  
• Design of a Polarization Reconfigurable Defected Ground Microstrip Antenna With L-shape Corner Segment;　2017/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　M. A. Rahman, E. Nishiyama, and I. Toyoda
  
• スロット－マイクロストリップT分岐を用いた倍電圧型平面レクテナの実験的検討;　2017/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Experimental Study of Double-Balanced-Multiplier Integrated Circularly Polarized Microstrip Antenna for Tx and Rx operation (Invited);　2017/08
  ANNOUNCEMENT INFO.;　Proc. 2017 IEEE Int’l Symp. Radio-Frequency Integration Tech. (RFIT2017), FR_2B_1, pp. 117-119, Seoul, Korea, Aug. 2017.
  AUTHOR;　E. Nishiyama, T. Ino, and I. Toyoda
  
• Circular Polarization Agile Microstrip Antenna With Double Balanced Multiplier on Ring Slot;　2017/07
  ANNOUNCEMENT INFO.;　2017 IEEE AP-S Symp. Antennas and Propag. And URSI CNC/USNC Joint Mtg. (AP-S/URSI 2017), WE-A1.1P.4, pp. 1145-1146, San Diego, CA, USA, July 2017.
  AUTHOR;　E. Nishiyama, H. Matsui, and I. Toyoda
  
• A Frequency Diversity Reconfigurable Antenna With Circular Polarization Switching Capability;　2017/07
  ANNOUNCEMENT INFO.;　2017 IEEE AP-S Symp. Antennas and Propag. And URSI CNC/USNC Joint Mtg. (AP-S/URSI 2017), TH-A1.2A.4, pp. 1367-1368, San Diego, CA, USA, July 2017.
  AUTHOR;　M. A. Rahman, E. Nishiyama, and I. Toyoda
  
• Design of a Conical/Pencil Dual-Beam Array Antenna Using Planar Magic-Ts;　2017/06
  ANNOUNCEMENT INFO.;　Proc. 2017 Asian Workshop on Antennas and Propag., P1-28, pp. 57-58, Sapporo, Japan, June 2017.
  AUTHOR;　T. P. Phyoe, E. Nishiyama, and I. Toyoda
  
• Performance Improvement of a Dual-Axis Wide-Angle Rectenna Using Matching Networks;　2017/06
  ANNOUNCEMENT INFO.;　IEICE Tech. Rep., WPT2017-10, June 2017.
  AUTHOR;　T. P. Phyoe, H. Satow, E. Nishiyama, and I. Toyoda
  
• Experiment Evaluation of a Multiport Harmonic Gunn Oscillator With Fundamental Signal Suppression;　2017/06
  ANNOUNCEMENT INFO.;　Proc. 2017 Thailand-Japan Microwave (TJMW2017), TH2-21, Bangkok, Thailand, June 2017.
  AUTHOR;　T. Sakumoto, T. Tanaka, and I. Toyoda
  
• Design of a Slot-Loaded Dual-Band Dual-Polarization Microstrip Antenna;　2017/03
  ANNOUNCEMENT INFO.;　Proc. 2017 IEICE General Conf., B-1-133
  AUTHOR;　M. A. Rahman, E. Nishiyama, and I. Toyoda
  
• Proposal of a Two-Dimensional DOA Estimation Antenna Using Multilayer Structure;　2017/03
  ANNOUNCEMENT INFO.;　Proc. 2017 IEICE General Conf., B-1-130
  AUTHOR;　R. Rashid, M. A. Hossain, E. Nishiyama, and I. Toyoda
  
• スロットT型マジックTを用いて構成したH面広角指向性レクテナの特性改善;　2017/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• ディファレンシャルレクテナのDCアレーを用いた電気2重層キャパシタへの充電特性;　2017/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 位相差給電による磁気共鳴型選択的無線電力伝送の拡張性に関する実験的検討;　2017/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 多素子化によるガン発振器一体型アクティブアレーアンテナの特性改善;　2017/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 偏波切り替え機能を有するガン発振器一体型リングスロットアクティブアンテナの実験評価;　2017/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 二重平衡型乗算器と複合した円偏波マイクロストリップアンテナの非線形特性に関する検討;　2017/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 入力振幅比制御指向性可変アンテナの給電位相誤差に対する特性変動の検討;　2017/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 生体インピーダンス計測に適した簡易型微小位相差計測回路の検討;　2017/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 二重平衡型乗算器の非線形特性を活用した円偏波マイクロストリップアンテナの実験検討;　2016/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 相互同期型結合回路を用いたPush-Push発振器アレーの出力安定性の評価;　2016/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• スロットリング共振器を用いたマルチポートPush-Push発振器の実験評価;　2016/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 基本波フィルタを装荷したマルチポート高調波ガン発振器の試作評価;　2016/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• An RF Multiplier Integrated Planar Antenna for DOA Estimation;　2016/10
  ANNOUNCEMENT INFO.;　Proc. 2016 Int'l Symp. Antennas and Propag. (ISAP2016), pp. 438-439, POS1-77, Okinawa, Japan, Oct. 2016.
  AUTHOR;　R. Rashid, D. Hattori, E. Nishiyama, and I. Toyoda
  
• An H-Plane Wide-Angle Rectenna Using an In-Phase/Anti-Phase Dual-Feed Antenna;　2016/10
  ANNOUNCEMENT INFO.;　Proc. 2016 Int'l Symp. Antennas and Propag. (ISAP2016), pp. 532-533, POS1-124, Okinawa, Japan, Oct. 2016.
  AUTHOR;　H. Satow, Y Tanaka, E. Nishiyama, and I. Toyoda
  
• A Microstrip Antenna With Circular Polarization Switching Capability for X-Band Applications;　2016/10
  ANNOUNCEMENT INFO.;　Proc. 2016 Int'l Symp. Antennas and Propag. (ISAP2016), pp. 820-821, POS2-55, Okinawa, Japan, Oct. 2016.
  AUTHOR;　M. A. Rahman, E. Nishiyama, M. A. Hossain, Q. D. Hossain, and I. Toyoda
  
• 相互同期型結合回路を用いたPush-Push発振器アレーの特性評価;　2016/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 基本波抑圧構成を用いたマルチポート高調波ガン発振器の試作評価;　2016/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 位相差給電による選択無線電力伝送の拡張性に関する検討;　2016/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 蓄電型ディファレンシャルレクテナの変換特性の検討;　2016/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Design of a Circularly Polarized Microstrip Antenna With Frequency and Polarization Diversity Using Single Corner Perturbation;　2016/09
  ANNOUNCEMENT INFO.;　Proc. 2016 IEICE Society Conf., B-1-85, Sep. 2016.
  AUTHOR;　M. A. Rahman, E. Nishiyama, and I. Toyoda
  
• Theoretical Evaluation of an Extended Monopulse DOA Estimation Antenna Integrating RF Multiplier;　2016/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　R. Rashid, E. Nishiyama, and I. Toyoda
  
• 同相／逆相3給電アンテナを用いた2次元指向性可変アレーアンテナの試作評価;　2016/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 2種類のマジックTを用いた3給電平面アレーアンテナの逆相給電H面利得向上の検討;　2016/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Basic Evaluation of a Slot-Ring Gunn Oscillator for Active Antennas;　2016/09
  ANNOUNCEMENT INFO.;　Rec. 2016 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 10-2A-07, Sep. 2016.
  AUTHOR;　H. Ushiroda, E. Nishiyama, and I. Toyoda
  
• Miniaturization of 920-MHz Differential Rectennas Using Shorted-Microstrip Antennas;　2016/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　T. Suenaga, E. Nishiyama, A. Morita, T. Kudo, and I. Toyoda
  
• Basic Study of a Planar Rectenna Using Slot-Microstrip Line T-Junction;　2016/09
  ANNOUNCEMENT INFO.;　Rec. 2016 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 10-2A-03, Sep. 2016.
  AUTHOR;　K. Saisyo, E. Nishiyama, and I. Toyoda
  
• Basic Study of a Ring Slot Antenna Integrating Gunn Oscillators for Spatial Modulation;　2016/09
  ANNOUNCEMENT INFO.;　Rec. 2016 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 10-1P-02, Sep. 2016.
  AUTHOR;　Y. Furukawa, E. Nishiyama, and I. Toyoda
  
• Experimental Study of a Circularly Polarized Circular Microstrip Antenna With Double Balanced Multiplier;　2016/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　T. Ino, E. Nishiyama, and I. Toyoda
  
• ガン発振器を一体化した4素子パッチアクティブアレーアンテナの基礎検討;　2016/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 二重平衡型乗算器を一体化した円偏波アンテナ構成法の検討;　2016/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Stabilizing Output Performance of Positive Feedback Type Push-Push Oscillator Array by Injection Locking Technology;　2016/07
  ANNOUNCEMENT INFO.;　2016 17th Int’l Symp. Antenna Technology and Applied Electromagnetics (ANTEM2016), Montreal, QC, Canada, July 2016.
  AUTHOR;　T. Tanaka, H. Umezaki, and I. Toyoda
  
• Experimental Evaluation of a Bow-Tie Rectenna;　2016/06
  ANNOUNCEMENT INFO.;　IEICE Tech. Rep., WPT2016-11, June 2016.
  AUTHOR;　A. J. Alvina, E. Nishiyama, and I. Toyoda
  
• Basic Study on Varactor Loaded Tunable Circularly Polarized Microstrip Antenna;　2016/06
  ANNOUNCEMENT INFO.;　
  AUTHOR;　E. Nishiyama, T. Yamada, and I. Toyoda
  
• Design of an Orthogonal Feed Circularly Polarized Microstrip Array Antenna Suitable for Large Scale Extensible Arrays;　2016/05
  ANNOUNCEMENT INFO.;　5th Int’l Conf. Informatics, Electronics & Vision (ICIEV2016), 53, Dhaka, Bangladesh, May 2016.
  AUTHOR;　M. A. Rahman, E. Nishiyama, M. A. Hossain, Q. D. Hossain, and I. Toyoda
  
• 電気2重層キャパシタ一体型ディファレンシャルレクテナの特性評価;　2016/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Performance Analysis of Magic-T Integrated Array Antennas in Two Different Configurations;　2016/03
  ANNOUNCEMENT INFO.;　Proc. 2016 IEICE General Conf., B-1-187
  AUTHOR;　R. Rashid, E. Nishiyama, and I. Toyoda
  
• Experimental Investigation of a Circularly Polarized Array Antenna With Inclined Linear Polarization Patches;　2016/03
  ANNOUNCEMENT INFO.;　Proc. 2016 IEICE General Conf., B-1-186
  AUTHOR;　M. A. Rahman, E. Nishiyama, M. A. Hossain, Q. D. Hossain, and I. Toyoda
  
• スロットT分岐型マジックTのH面指向性可変アレーアンテナへの応用;　2016/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• ガン発振器を一体化したアクティブアレーアンテナの提案;　2016/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 2種類の平面型マジックTを用いた同相・逆相3給電アンテナの提案;　2016/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• バラクタダイオードを用いた周波数可変円偏波マイクロストリップアンテナの特性評価;　2016/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 二重平衡型乗算器を用いた偏波切り替え機能を有する平面アンテナの基礎検討;　2016/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Magic-T回路を用いた偏波共用L形マイクロストリップアレーアンテナの基礎検討;　2016/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• スロットT分岐型マジックTを用いた2給電平面アレーアンテナの基本検討;　2016/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 注入同期構成を用いた3素子正帰還型Push-Push発振器アレーの実験的評価;　2016/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Prototype Evaluation of a Beam Tracking Antenna Using Magic-T;　2015/11
  ANNOUNCEMENT INFO.;　Proc. 2015 Int’l Symp. on Antennas and Propag. (ISAP2015), S3.12.1
  AUTHOR;　R. Rashid, E. Nishiyama, and I. Toyoda
  
• Gain Enhancement of a Dual Feed Microstrip Array Antenna Using Parasitic Elements;　2015/11
  ANNOUNCEMENT INFO.;　Proc. 2015 Int’l Symp. on Antennas and Propag. (ISAP2015), S5.9.1
  AUTHOR;　H. Satow, E. Nishiyama, and I. Toyoda
  
• Selective Wireless Power Transfer Using Two Transmission Coils Sandwiching Reception Coils;　2015/11
  ANNOUNCEMENT INFO.;　Proc. 2015 Int’l Symp. on Antennas and Propag. (ISAP2015), S2.4.6
  AUTHOR;　A. Yoshida, E. Nishiyama, and I. Toyoda
  
• Experimental Study on Load Resistance Design of a Differential Rectenna;　2015/11
  ANNOUNCEMENT INFO.;　Proc. 2015 Int’l Symp. on Antennas and Propag. (ISAP2015), S1.4.1
  AUTHOR;　J. Takahashi, E. Nishiyama, and I. Toyoda
  
• A Study of Automatic Measuring Circuit Suitable for Very Small Phase Difference Measurement;　2015/11
  ANNOUNCEMENT INFO.;　Proc. 2015 Int’l Symp. on Intelligent Signal Processig and Comm. Sys. (ISPACS), 2D-4
  AUTHOR;　T. Noguchi, S. Fukai, I. Toyoda, Y. Ishikawa, and A. Shimizu
  
• ディファレンシャルレクテナの高効率化に向けた整合回路の検討;　2015/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 直線配置選択的WPTシステムにおける共振器配置の検討;　2015/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• スロット線路共振器を用いた2素子2倍波ガン発振器の基礎検討;　2015/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Magnetic Resonance Type Selective Wireless Power Transfer Using Two Transmission Resonators with Phase Differenc;　2015/11
  ANNOUNCEMENT INFO.;　Proc. 2015 Int’l Symp. on Antennas and Propag. (ISAP2015), S4.12.4
  AUTHOR;　Y. Fukushima, E. Nishiyama, and I. Toyoda
  
• A Push-Push Oscillator Array with Very Simple Coupling Circuits Using HEMT;　2015/09
  ANNOUNCEMENT INFO.;　Proc. 45th European Microwave Conference (EuMC2015), EuMC14-04
  AUTHOR;　T. Tanaka, T. Sameshima, and I. Toyoda
  
• Experimental Investigation of a Selective WPT System Using Two Transmission Coils Sandwiching Reception Coils;　2015/09
  ANNOUNCEMENT INFO.;　Rec. 2015 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 07-2A-02
  AUTHOR;　A. Yoshida, E. Nishiyama, and I. Toyoda
  
• 逆相給電マイクロストリップアレーアンテナの無給電素子を用いた高利得化;　2015/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Theoretical Approach of a Beam Tracking Antenna Using Magic-T;　2015/09
  ANNOUNCEMENT INFO.;　Proc. 2015 IEICE Society Conf., B-1-50
  AUTHOR;　R. Rashid, E. Nishiyama, and I. Toyoda
  
• Basic Concept of an Active Array Antenna Integrated with a Gunn Oscillator;　2015/09
  ANNOUNCEMENT INFO.;　Rec. 2015 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 07-2P-05
  AUTHOR;　Y. Furukawa, E. Nishiyama, and I. Toyoda
  
• Discussion on Load Resistance of Differential Rectennas;　2015/09
  ANNOUNCEMENT INFO.;　Rec. 2015 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 07-2P-04
  AUTHOR;　J. Takahashi, E. Nishiyama, and I. Toyoda
  
• Basic Evaluation of a Second Harmonic Injection Locking Gunn Oscillator;　2015/09
  ANNOUNCEMENT INFO.;　Rec. 2015 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 07-2A-07
  AUTHOR;　J. Harada, T. Tanaka, and I. Toyoda
  
• Experimental Evaluation of a New Oscillator Array Using Push-Push Oscillators with High Connection Flexibility to Coupling Circuits;　2015/09
  ANNOUNCEMENT INFO.;　Rec. 2015 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 07-2A-06
  AUTHOR;　N. Miyauchi, T. Tanaka, and I. Toyoda
  
• Experimental Examination of Resonator Locations in a Doubly Symmetric Selective WPT System;　2015/09
  ANNOUNCEMENT INFO.;　Rec. 2015 Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 07-2A-03
  AUTHOR;　Y. Fukushima, E. Nishiyama, and I. Toyoda
  
• Basic Study of a Beam Tracking Antenna Using a Planar Magic-T;　2015/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　R. Rashid, E. Nishiyama, and I. Toyoda
  
• 簡易型微小位相差計測回路に適した自動振幅調整アルゴリズムの検討;　2015/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Experimental Study of an Improved Mono-Pulse DOA Estimation Antenna by Integrating Microwave Circuits;　2015/08
  ANNOUNCEMENT INFO.;　2015 Thailand-Japan Microwave (TJMW2015), FR2-06
  AUTHOR;　E. Nishiyama, R. Tanaka, and I. Toyoda
  
• Basic Evaluation of a Positive Feedback Type Push-Push Oscillator Array Using Injection Locking Technology;　2015/08
  ANNOUNCEMENT INFO.;　2015　Vietnam-Japan Microwave (VJMW2015), MO2-1
  AUTHOR;　H. Umezaki, T. Tanaka, and I. Toyoda
  
• A Planar Magic-T Employing a Slot-Line T Junction and Its Performance Improvement Using an Impedance Transformer;　2015/08
  ANNOUNCEMENT INFO.;　2015　Vietnam-Japan Microwave (VJMW2015), MO2-5
  AUTHOR;　Y. Tanaka, T. Tanaka, and I. Toyoda
  
• A Push-Push Oscillator Array Using Mutual Phase Synchronization and Injection Locking;　2015/08
  ANNOUNCEMENT INFO.;　2015　Vietnam-Japan Microwave (VJMW2015), TU3-3
  AUTHOR;　T. Tanaka, T. Sameshima, N. Miyauchi, and I. Toyoda
  
• Double Balanced Multiplier Integrated Circular Polarization Switchable Microstrip Antenna;　2015/07
  ANNOUNCEMENT INFO.;　2015 IEEE AP-S Symp. on Antennas and Propag. and URSI CNC/USNC Joint Mtg. Dig. (AP-S/URSI 2015), WEP-A1.5A.9
  AUTHOR;　E. Nishiyama, A. Matsuo, and I. Toyoda
  
• A Differential Rectenna with Matching Shorted Stubs;　2015/06
  ANNOUNCEMENT INFO.;　Proc. 2015 IEEE 4th Asia-Pacific Conf. on Antennas and Propag. (APCAP2015), F1B-2
  AUTHOR;　J. Takahashi, E. Nishiyama, and I. Toyoda
  
• マジックTを用いた広角指向性レクテナの特性評価－ダイオードの接続方法の比較－;　2015/06
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• スロット線路共振器を用いた二倍波ガン発振器の基礎検討;　2015/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 注入同期構成を用いたPush-Push発振器アレーの同期範囲の評価;　2015/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• マジックTを用いた広角指向性レクテナの基本特性;　2015/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 可変長スタブを用いたマルチバンドRF回路設計法の試作評価;　2015/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 増幅回路を組み込んだモノパルス方式到来角推定アンテナの特性評価;　2015/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 電流合成型マルチ偏波受信レクテナの等価回路を用いた特性評価　－入力電力と接続法に関する検討－;　2015/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• ショートスタブ整合回路を用いたディファレンシャルレクテナの高効率化に関する検討;　2015/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 可変容量装荷マイクロストリップアンテナを用いた円偏波アンテナの基礎検討;　2014/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Design of an X-Band Microstrip Array Antenna for Circular Polarization;　2014/12
  ANNOUNCEMENT INFO.;　8th Int’l Conf. on Electrical and Computer Eng. (ICECE2014), 186
  AUTHOR;　M. A. Rahman, Q. D. Hossain, M. A. Hossain, E. Nishiyama, and I. Toyoda
  
• Performance Evaluation of a 5.8-GHz Current Aggregation Type Multi-polarization Rectenna;　2014/12
  ANNOUNCEMENT INFO.;　2014 Int’l Symp. on Antennas and Propag. (ISAP2014), FR4D-03
  AUTHOR;　R. Nakashima, E. Nishiyama, and I. Toyoda
  
• Estimation Error of a Mono-pulse DOA Estimation Antenna for Two Incident Waves;　2014/12
  ANNOUNCEMENT INFO.;　2014 Int’l Symp. on Antennas and Propag. (ISAP2014), WE3A-06
  AUTHOR;　R. Tanaka, E. Nishiyama, and I. Toyoda
  
• 簡易な結合回路を用いたPush-Push発振器アレーにおける注入同期の検討;　2014/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 超電導コイルの交流損失測定に適した簡易型微小位相差計測回路の検討;　2014/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Design Method of Multiband RF Circuits Using Tunable Shorted Stubs;　2014/11
  ANNOUNCEMENT INFO.;　2014 Thailand-Japan Microwave (TJMW2014), FR-3
  AUTHOR;　I. Toyoda, J. Hirata, and T. Tanaka
  
• A Mutual Phase Synchronization Type Push-Push Oscillator Array Using Simple Coupling Circuit;　2014/11
  ANNOUNCEMENT INFO.;　Proc. Asia-Pacific Microwave Conf. (APMC2014), 1043-1045
  AUTHOR;　T. Sameshima, T. Tanaka, and I. Toyoda
  
• Differential Rectenna Arrays;　2014/11
  ANNOUNCEMENT INFO.;　Proc. 10th Asia-Pacific Eng. Res. Forum on Microwaves and Electromagnetic Theory (APMET2014), 84-89
  AUTHOR;　E. Nishiyama and I. Toyoda
  
• Advanced Planar Antennas Integrated with Microwave Circuits for RF Signal Processing Applications;　2014/11
  ANNOUNCEMENT INFO.;　Proc. 10th Asia-Pacific Eng. Res. Forum on Microwaves and Electromagnetic Theory (APMET2014), 111-115
  AUTHOR;　I. Toyoda and E. Nishiyama
  
• Design of a Dual Circular Polarization Microstrip Patch Array Antenna;　2014/10
  ANNOUNCEMENT INFO.;　The 9th Int’l Forum on Strategic Technology 2014 (IFOST2014), S1-P103
  AUTHOR;　M. A. Rahman, Q. D. Hossain, M. A. Hossain, M. M. Haque, E. Nishiyama, and I. Toyoda
  
• 電流合成型マルチ偏波受信レクテナの等価回路解析;　2014/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• モノパルス方式到来角推定アンテナの不要波による推定誤差の検討;　2014/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• FDTDを応用した非線形挙動を含むレクテナ解析;　2014/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Basic Evaluation of a 5.8-GHz Current Aggregation Type Multi-Polarization Rectenna;　2014/09
  ANNOUNCEMENT INFO.;　The 67th Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 13-1A-01
  AUTHOR;　R. Nakashima, E. Nishiyama, and I. Toyoda
  
• Prototype Evaluation of a Tunable Shorted Stub Employing a Shunt Switch for Multiband RF Circuit Design;　2014/09
  ANNOUNCEMENT INFO.;　The 67th Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 13-1A-03
  AUTHOR;　J. Hirata, T. Tanaka, and I. Toyoda
  
• Basic Characteristics of a Selective Wireless Power Transfer System Using 4 Coils Aligned on a Line;　2014/09
  ANNOUNCEMENT INFO.;　The 67th Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 13-1A-05
  AUTHOR;　A. Yoshida, E. Nishiyama, and I. Toyoda
  
• Basic Evaluation of a Gunn Oscillator Using a Slot Line Resonator;　2014/09
  ANNOUNCEMENT INFO.;　The 67th Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 13-1A-09
  AUTHOR;　J. Harada, T. Tanaka, and I. Toyoda
  
• Characterization of a CRLH Slot Line for Both-Sided Microwave Circuits;　2014/09
  ANNOUNCEMENT INFO.;　The 67th Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 13-1P-02
  AUTHOR;　R. Teshima, T. Tanaka, and I. Toyoda
  
• Proposal of a Positive Feedback Type Push-Push Oscillator Array Using Injection Locking Technology;　2014/09
  ANNOUNCEMENT INFO.;　The 67th Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 13-1P-04
  AUTHOR;　T. Umezaki, T. Tanaka, and I. Toyoda
  
• A Study of Push-Push Oscillator Arrays Integrating a Reflection Type and Transmission Type Simple Coupling Circuit;　2014/09
  ANNOUNCEMENT INFO.;　The 67th Joint Conf. of Electrical, Electronics and Information Engineers in Kyushu, 13-1P-07
  AUTHOR;　T. Sameshima, T. Tanaka, and I. Toyoda
  
• An Oscillator Array Using Push-Push Oscillators and Very Simple Coupling Circuits;　2014/07
  ANNOUNCEMENT INFO.;　Proc. 2014 16th Int’l Symp. on Antenna Technology and Applied Electromagnetics (ANTEM2014), 26
  AUTHOR;　T. Tanaka, T. Sameshima, M. Aikawa, and I. Toyoda
  
• An Oscillator Array Using Positive Feedback Type Push-Push Oscillators and Directional Phase Shifters;　2014/07
  ANNOUNCEMENT INFO.;　Proc. 2014 16th Int’l Symp. on Antenna Technology and Applied Electromagnetics (ANTEM2014), 38
  AUTHOR;　T. Tanaka and I. Toyoda
  
• A Mono-Pulse DOA Estimation Antenna Integrated with RF Amplifiers and Detection Circuits;　2014/07
  ANNOUNCEMENT INFO.;　2014 Int’l Symp. Antennas and Propag. and USNC-URSI Radio Sci. Mtg. (2014 AP-S/USNC-URSI), 526.3
  AUTHOR;　R. Tanaka, E. Nishiyama, and I. Toyoda
  
• Performance of 5.8-GHz Multi-Polarization Rectenna for Linearly/Circularly Polarized Wave Reception;　2014/05
  ANNOUNCEMENT INFO.;　IEEE Wireless Power Transfer Conf. (WPTC2014), P-Th-18, 208-211
  AUTHOR;　R. Nakashima, E. Nishiyama, and I. Toyoda
  
• Basic Study on Orthogonally Excited Beam Steering Microstrip Array Antenna Using Variable Gain Amplifiers;　2014/05
  ANNOUNCEMENT INFO.;　2014 Asian Workshop on Antenna and Propag. (AWAP2014)
  AUTHOR;　E.Nishiyama, T. Kondo, and I. Toyoda
  
• 直交偏波分離型マルチ偏波受信レクテナの等価回路解析;　2014/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• マジック-T回路を用いて構成した広角指向性を有するレクテナの提案;　2014/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 可変長スタブを用いたマルチバンド増幅器設計法の試作検討;　2014/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 磁界結合による簡易な結合回路を用いた相互同期型Push-Push発振器アレーの提案;　2014/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Design of a Circular Polarization Switchable Microstrip Array Antenna Using Magic-T Bias Circuit;　2014/02
  ANNOUNCEMENT INFO.;　2013 Int’l Conf. Electrical Info. and Comm. Tech. (EICT2013), D2E4-4
  AUTHOR;　M. D. Hossain, P. Chowdhury, Q. D. Hossain, E. Nishiyama, and I. Toyoda
  
• 増幅回路と検波回路を一体化したモノパルス方式電波到来角推定アンテナの特性評価;　2014/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 可変利得増幅器を一体化した直交励振指向性可変マイクロストリップアレーアンテナの施策検討;　2014/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 空間変調システム用の偏波切替／偏波識別平面機能アンテナの試作評価;　2014/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• マジックTを用いた広角受信レクテナの基礎検討;　2014/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• バンドギャップ切り替え機能を持つ新しいCRLH伝送線路構成法の検討;　2014/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 両平面回路への適用を目指したCRLHスロット線路の基礎検討;　2014/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 位相差給電による磁界共振結合型選択的無線電力伝送システムにおける共振器位置依存性の検討;　2014/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 直交偏波分離型マルチ偏波受信レクテナの偏波角特性の検討;　2014/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 5.8-GHz Stacked Differential Mode Rectenna Suitable for Large-Scale Rectenna Arrays;　2013/11
  ANNOUNCEMENT INFO.;　2013 Asia-Pacific Microwave Conf. (APMC2013), P3-53
  AUTHOR;　T. Matsunaga, E. Nishiyama, and I. Toyoda
  
• 簡易な回路構成の結合回路を用いたPush-Push発振器アレー;　2013/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 可変長スタブを用いたマルチバンド増幅器設計法の提案;　2013/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 検波回路を一体構成したモノパルス方式電波到来角推定アンテナの検討;　2013/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 空間変調通信システム用の偏波切替/識別平面機能アンテナの提案;　2013/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 直交偏波分離型マルチ偏波受信レクテナの円偏波受信特性;　2013/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 大規模集積化に向けた縦積みディファレンシャルレクテナの構成パラメータの検討（その2）;　2013/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Prototype Evaluation of a PSK Modulator/Demodulator for Space Modulation Systems;　2013/09
  ANNOUNCEMENT INFO.;　The 66th Joint Conf. of Electrical and Electronics Engineers in Kyushu, 03-1P-08
  AUTHOR;　S. Matsuyuki, E. Nishiyama, and I. Toyoda
  
• Basic Concept of a Selective Wireless Power Transfer System Using Two Transmission Resonators with Phase Difference;　2013/09
  ANNOUNCEMENT INFO.;　The 66th Joint Conf. of Electrical and Electronics Engineers in Kyushu, 03-1P-07
  AUTHOR;　H. Kohara, E. Nishiyama, and I. Toyoda
  
• Experimental Evaluation of 30-element Stacked Differential Rectenna Array;　2013/09
  ANNOUNCEMENT INFO.;　The 66th Joint Conf. of Electrical and Electronics Engineers in Kyushu, 03-1P-03
  AUTHOR;　T. Matsunaga, E. Nishiyama, and I. Toyoda
  
• Performance Comparison between Multi-Polarization Rectenna and Two-Patch Differential Rectenna;　2013/09
  ANNOUNCEMENT INFO.;　The 66th Joint Conf. of Electrical and Electronics Engineers in Kyushu, 03-1P-02
  AUTHOR;　R. Nakashima, E. Nishiyama, and I. Toyoda
  
• Study on Characteristic Impedance of Differencial Rectenna Unit;　2013/07
  ANNOUNCEMENT INFO.;　2013 IEEE Int’l Symp. Antennas and Propag. and USNC-URSI Nat’l Radio Science Mtg. (2013 AP-S/USNC-URSI), 541.8
  AUTHOR;　E. Nishiyama, H. Otomaru, and I. Toyoda
  
• ［チュートリアル講演］直交励振モードを活用した機能アンテナ;　2013/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 大規模集積化に向けた縦積みディファレンシャルモードレクテナの構成パラメータ検討;　2013/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• A Band-Rejection Branch-Line Hybrid Using Unbalanced CRLH Transmission Lines;　2013/04
  ANNOUNCEMENT INFO.;　6th Global Symp. on Millimeter-Waves 2013 (GSMM2013), T6-4
  AUTHOR;　A. Maeda, T. Tanaka, and I. Toyoda
  
• Novel Phase Noise Reduction Method for Positive Feedback Type Push-Push Oscillator;　2013/04
  ANNOUNCEMENT INFO.;　6th Global Symp. on Millimeter-Waves 2013 (GSMM2013), T4-5
  AUTHOR;　T. Tanaka, H. Hashiguchi, M. Aikawa, and I. Toyoda
  
• 5.8-GHz Multi-Polarization Rectenna Integrating Dual-Polarized Antennas;　2013/04
  ANNOUNCEMENT INFO.;　6th Global Symp. on Millimeter-Waves 2013 (GSMM2013), T6-3
  AUTHOR;　 I. Toyoda, R. Nakashima, and E. Nishiyama
  
• 空間変調通信システムのための偏波切替／偏波識別平面機能アンテナ;　2013/04
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 大規模集積化に向けた縦積みディファレンシャルモードレクテナの提案;　2013/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Magic-Tとオフセット給電回路を用いた簡易型電磁到来角センシングアレーアンテナ;　2013/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 任意方向の直線偏波受信を可能としたレクテナの基礎検討;　2013/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• ディファレンシャルモードレクテナユニットの特性インピ-ダンスの最適化;　2013/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• A Ku Band Oscillator Array Using Positive Feedback Type Push-Push Oscillators;　2012/12
  ANNOUNCEMENT INFO.;　2012 Asia-Pacific Microwave Conf. (APMC2012), 4C1-03
  AUTHOR;　T. Tanaka, K. Takata, M. Aikawa, and I. Toyoda
  
• Orthogonal Linear Polarization Switchable Slot-Ring Array Antenna Using RF-MEMS Switch;　2012/12
  ANNOUNCEMENT INFO.;　2012 Asia-Pacific Microwave Conf. (APMC2012), 3D5-03
  AUTHOR;　Y. Ushijima, E. Nishiyama, M. Aikawa, and I. Toyoda
  
• Basic Characteristics of Selective Wireless Power Transfer System Based on Coupled Magnetic Resonances;　2012/12
  ANNOUNCEMENT INFO.;　2012 Asia-Pacific Microwave Conf. (APMC2012), 2D3-12
  AUTHOR;　H. Kohara and I. Toyoda
  
• Beam Steering Microstrip Array Antenna with Orthogonal Excitation;　2012/12
  ANNOUNCEMENT INFO.;　2012 Asia-Pacific Microwave Conf. (APMC2012), 2A5-04
  AUTHOR;　T. Kondo, Y. Ushijima, E. Nishiyama, M. Aikawa, and I. Toyoda
  
• Single Fed Orthogonal Linear Polarization Switchable Microstrip Planar Antenna;　2012/12
  ANNOUNCEMENT INFO.;　15th Int’l Conf. on Computer and Information Technology (ICCIT 2012)
  AUTHOR;　M. K. Ghosh, M. A. Hossain, E. Nishiyama, and I. Toyoda
  
• バンドギャップを有するスタブ型CRLH伝送線路の研究;　2012/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Direction of arrival estimating array antenna;　2012/10
  ANNOUNCEMENT INFO.;　2012 Int. Symp. on Antennas and Propag., P0389
  AUTHOR;　H. Sakai, E. Nishiyama and I. Toyoda
  
• Linear Polarization Switchable Microstrip Array Antenna using Magic-T Circuit;　2012/10
  ANNOUNCEMENT INFO.;　2012 Int. Symp. on Antennas and Propag., P0342
  AUTHOR;　T. Onishi, Md. Hossain, E. Nishiyama and I. Toyoda
  
• Orthogonal Linear Polarization Detection Slot-ring Antenna;　2012/10
  ANNOUNCEMENT INFO.;　2012 Int. Symp. on Antennas and Propag., P0365
  AUTHOR;　Md. Hossain, E. Nishiyama and I. Toyoda
  
• Polarization Agile Slot-Ring Array Antenna using Magic-T Circuit;　2012/10
  ANNOUNCEMENT INFO.;　2012 Int. Symp. on Antennas and Propag., P0352
  AUTHOR;　Y. Ushijima, E. Nishiyama and I. Toyoda
  
• Polarization Agile Micorostrip Array Antenna;　2012/10
  ANNOUNCEMENT INFO.;　APMET2012
  AUTHOR;　E. Nishiyama, Y. Ushijima, M. A. Hossain, T. Ohnishi, I. Toyoda, M. Aikawa
  
• Experimental Evaluation of Selective Wireless Power Transfer System Based on Coupled Magnetic Resonances;　2012/09
  ANNOUNCEMENT INFO.;　The 65th Joint Conf. of Electrical and Electronics Engineers in Kyushu, 02-1P-03
  AUTHOR;　H. Kohara and I. Toyoda
  
• Novel Configuration of RF-DC Converter for High Efficiency Rectenna;　2012/09
  ANNOUNCEMENT INFO.;　The 65th Joint Conf. of Electrical and Electronics Engineers in Kyushu, 02-1P-02
  AUTHOR;　T. Matsunaga, E. Nishiyama, and I. Toyoda
  
• A Study of Space Modulation Transmission System;　2012/09
  ANNOUNCEMENT INFO.;　The 65th Joint Conf. of Electrical and Electronics Engineers in Kyushu, 02-1P-01
  AUTHOR;　S. Matsuyuki, Y. Ushijima, M. A. Hossain, E. Nishiyama, I. Toyoda, and M. Aikawa
  
• ダイオードを実装した直交直線偏波切り替え機能を有する平面アレーアンテナ;　2012/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 給電回路にRF-MEMSスイッチを用いた偏波切り替えスロットリングアレーアンテナの検討;　2012/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Beam Steering Microstrip Array Antenna Using Orthogonal Excitation;　2012/08
  ANNOUNCEMENT INFO.;　PIERS2012
  AUTHOR;　Y. Ushijima, T. Kondo, E. Nishiyama, and I. Toyoda
  
• Circular Polarization Switchable Single Layer Microstrip Array Antenna;　2012/07
  ANNOUNCEMENT INFO.;　2012 IEEE Antennas and Propag. Society Intl. Symp. (APSURSI), 409.4
  AUTHOR;　Y. Ushijima, E. Nishiyama, I. Toyoda, and M. Aikawa
  
• Differential Mode Rectenna Array;　2012/07
  ANNOUNCEMENT INFO.;　2012 IEEE Antennas and Propag. Society Int’l. Symp. (APSURSI), 457.8
  AUTHOR;　T. Sakamoto, Y. Ushijima, E. Nishiyama, I. Toyoda, and M. Aikawa
  
• Performance Analysis of Mobile Ad-hoc Network Routing Protocols;　2012/05
  ANNOUNCEMENT INFO.;　ICIEV12
  AUTHOR;　M.T. Arefin, M.T.I. Khan, and I. Toyoda
  
• 直交励振を利用した指向性可変マイクロストリップアンテナ;　2012/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Linear Polarization Switchable Patch Array Antenna Using Magic-T and Orthogonal Feed;　2012/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　M. A. Hossain, E. Nishiyama, and I. Toyoda
  
• 拡張性に優れたバランスモードレクテナユニットの高効率化;　2012/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 直交円偏波切り替え機能を有する1層基板マイクロストリップアレーアンテナの検討;　2012/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 磁気共鳴型電力伝送に基づいた選択的無線電力伝送方式の提案;　2012/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  

Other Lectures

• A reconfigurable circularly polarized microstrip antenna employing switchable short-end microstrip-line perturbations;　2019/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　H. W. Htun, E. Nishiyama, and I. Toyoda
  
• 高周波波動信号処理技術;　2018/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• マイクロ波回路とアンテナを融合した高機能平面アンテナの基礎;　2014/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  

Application of Intellectual Property Rights

• Antenna(PCT/JP2013/077666);　2013/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　I.Toyoda, E. Nishiyama, M. Aikawa, Y. Ushijima
  
• アンテナ装置;　2012/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  

Dictionary of Compilation, Creating Database

• 知識ベース「知識の森(β版)」;　2010/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  

Others

• 様々な機能をシンプルに実現する平面型マジックTを用いたマイクロ波機能回路技術/次世代高機能無線システムのためのマルチビームアンテナ技術;　2019/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 低コスト高周波発振器を実現する4次高調波Push-Push発振器技術／次世代無線システムのためのリコンフィギュアブルアンテナ技術;　2018/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 電磁波の共振波動場を活用したマルチポート高調波ガン発振器技術／簡易な無線通信システムを実現するアクティブアレーアンテナ技術;　2017/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• マイクロ波回路とアンテナを一体複合化した高機能平面アンテナ技術／多彩な機能を実現する平面レクテナ技術;　2016/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• マイクロ波回路とアンテナを融合した高機能平面アンテナ技術，位相差給電による磁気共鳴型選択的ワイヤレス電力伝送技術;　2015/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 大電力・高効率化が容易な平面型レクテナ- ディファレンシャルレクテナ - 低コストでビームステアリングを実現するマイクロ波Push-Push発振器アレー;　2014/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 電磁波動場を活用した高機能マイクロ波回路・アンテナ技術;　2013/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 水平垂直偏波／右旋左旋円偏波を切替えたり同時共用できる平面機能アンテナ;　2013/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  

Invited Lecture, Special Lecture

• Introduction to Advanced Antenna Technology for Next Generation Wireless Systems;　2022/06
  ANNOUNCEMENT INFO.;　CUET webinar
  AUTHOR;　I. Toyoda
  
• Active Integrated Array Antenna for Next Generation Wireless Communication Systems − Challenge to Advanced Antenna Utilizing Spatial Parameter of Radio Wave;　2022/05
  ANNOUNCEMENT INFO.;　Int. Conf. Physics-2022
  AUTHOR;　I. Toyoda
  
• [Keynote speech] Polarization Agile Active Integrated Array Antenna for Next Generation Wireless Systems;　2021/03
  ANNOUNCEMENT INFO.;　2021 Int. Conf. Sust. Dev. in Tech. for 4th Ind. Rev. (ICSDTIR-2021), Virtual, Bangladesh, Mar. 2021.
  AUTHOR;　I. Toyoda
  
• A Monopulse Beam Steering Circularly Polarized Microstrip Array Antenna Using Magic-Ts;　2020/09
  ANNOUNCEMENT INFO.;　2020 IEEE Int’l Symp. Radio-Frequency Integration Technology (RFIT2020), TH4C-2, Hiroshima, Japan, Sep. 2020.
  AUTHOR;　E. Nishiyama, D. Iwamoto, and I. Toyoda
  
• Polarization Agile Active Integrated Antenna and Its Application to Wireless Power Transfer;　2019/10
  ANNOUNCEMENT INFO.;　Proc. 2019 Asian Wireless Power Transfer Workshop (AWPT2019)
  AUTHOR;　I. Toyoda, E. Nishiyama, T. Tanaka
  
• Rectenna Design Using Electromagnetic Field Simulation Including Nonlinear Devices (Invited);　2017/03
  ANNOUNCEMENT INFO.;　Proc. 2017 IEEE Int’l Conf. Computational Electromagnetics, pp. 130-132, 2B1.5
  AUTHOR;　I. Toyoda and E. Nishiyama
  
• (Invited) Double Balanced Multiplier Integrated Polarization Agile Microstrip Antenna;　2016/10
  ANNOUNCEMENT INFO.;　Proc. 11th Asia-Pacific Engineering Research Forum on Microwaves and Electromagnetic Theory (APMET2016), pp. 38-42, Oct. 2016.
  AUTHOR;　E. Nishiyama, T. Ino, and I. Toyoda
  
• (Invited) Advanced Planar Rectenna Technology;　2016/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　I. Toyoda and E. Nishiyama
  
• (Invited) Double Balanced Multiplier Integrated Wideband Circular Polarization Switchable Microstrip Antenna;　2016/08
  ANNOUNCEMENT INFO.;　2016 IEEE Int’l Symp. Radio-Frequency Integration Tech. (RFIT2016), Taipei, Taiwan, Aug. 2016.
  AUTHOR;　E. Nishiyama, T. Ino, and I. Toyoda
  
• A Differential Rectenna and Its Flexibility;　2016/03
  ANNOUNCEMENT INFO.;　2016 Int’l Workshop on Antenna Technology (iWAT2016), W3-1
  AUTHOR;　I. Toyoda and E. Nishiyama
  
• [Invited Talk] Advanced Planar Rectenna -Expandability and Functionality of Rectenna-;　2014/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　I. Toyoda and E. Nishiyama
  
• Technology prospects of advanced planar antennas integrated with microwave circuits;　2014/10
  ANNOUNCEMENT INFO.;　The 9th Int’l Forum on Strategic Technology 2014 (IFOST2014)
  AUTHOR;　I. Toyoda
  
• [特別講演]安定化回路を用いたシンプルな広帯域2段ソース接地増幅器;　2014/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• [特別講演]小型広帯域二段ソース接地増幅回路;　2014/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• ［特別講演］平行結合ストリップラインを用いた5段バンドパスフィルタ;　2013/06
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• ［特別講演］スタブ整合回路を用いたL帯高利得1段ソース接地増幅器;　2012/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• ［特別講演］集中・分布定数整合回路付き低消費電力L帯1段ソース接地増幅器;　2012/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• ［特別講演］分布定数インピーダンス整合回路を用いたL帯高利得2段ソース接地増幅器;　2012/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• ［特別講演］集中・分布定数整合回路付き低消費電力L帯2段増幅器;　2012/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;