Published papers
Number of published data : 134
No. Classification Refereed paper Title Authorship Author Journal Volume/issue/page Publication date ISSN DOI URL
1 Paper
Yes
Small-signal design consideration for two-dimensional change-over switch GaN MMICs (Accepted)
Joint
Hiroshi Mizutani, Ryo Ishikawa, and Kazuhiko Honjo
Japanese Journal of Applied Physics
59/ SG, --
2020/04/01



2 Paper
Yes
High Performance OAM Communication Exploiting Port-Azimuth Effect of Loop Antennas
Joint
Hiroto Otsuka, Ryohei Yamagishi, Akira Saitou, Hiroshi Suzuki, Ryo Ishikawa, and Kazuhiko Honjo
IEICE Transactions on Communications
E102-B/ 12, 2267-2275
2019/12/01



3 Paper
Yes
Class-F GaN HEMT amplifiers using compact CRLH harmonic tuning stubs designed based on negative order resonance modes
Joint
Shinichi Tanaka, Sota Koizumi, Ryo Ishikawa, and Kazuhiko Honjo
IEICE Transactions on Electronics
E102-C/ 10, 691-698
2019/10/01

10.1587/transele.2019MMP0001

4 Paper
Yes
Anti-Interference Circuit Configuration for Concurrent Dual-Band Operation in High-Efficiency GaN HEMT Power Amplifier
Joint
H. Nishizawa, Y. Takayama, R. Ishikawa, and K. Honjo
Progress In Electromagnetics Research C
93, 199-209
2019/06



5 Paper
Yes
4.5-/4.9-GHz-Band Selective High-Efficiency GaN HEMT Power Amplifier by Characteristic Impedance Switching
Joint
Kazuki Mashimo, Ryo Ishikawa, and Kazuhiko Honjo
IEICE Transactions on Electronics
E101-C/ 10, 751-758
2018/10/01



6 Paper
Yes
83nJ/bit Transmitter Using Code-Modulated Synchronized-OOK on 65nm SOTB for Normally-Off Wireless Sensor Networks
Joint
Van-Trung Nguyen, Ryo Ishikawa, And Koichiro Ishibashi
IEICE Transactions on Electronics
E101-C/ 7, 472-479
2018/07/01
1745-1353
10.1587/transele.E101.C.472

7 Paper
Yes
Second Harmonic Treatment Technique for Bandwidth Enhancement of GaN HEMT Amplifier with Harmonic Reactive Terminations
Joint
Jun Enomoto, Ryo Ishikawa, and Kazuhiko Honjo
IEEE Transactions on Microwave Theory and Techniques
65/ 12, 4947-4952
2017/12/01

10.1109/TMTT.2017.2704931

8 Paper
Yes
Electrothermal Transient Analysis of GaN Power Amplifier With Dynamic Drain Voltage Biasing
Joint
Shigeru Hiura, and Ryo Ishikawa
IEEE Microwave and Wireless Components Letters
27/ 11, 1019-1021
2017/11/01

10.1109/LMWC.2017.2750027

9 Paper
Yes
GaN HEMT DC I–V Device Model for Accurate RF Rectifier Simulation
Joint
Tsukasa Yasui, Ryo Ishikawa, and Kazuhiko Honjo
IEEE Microwave and Wireless Components Letters
27/ 10, 930-932
2017/10/01

10.1109/LMWC.2017.2746678

10 Paper
Yes
Microwave Characteristics of an Independently Biased 3-Stack InGaP/GaAs HBT Configuration
Joint
Manh Duy Luong, Ryo Ishikawa, Yoichiro Takayama, and Kazuhiko Honjo
IEEE Transactions on Circuits And Systems–I
64/ 5, 1140-1151
2017/05/01



11 Paper
Yes
低周波アクティブロード・プル評価に基づくマイクロ波高効率増幅器設計法—トランジスタ内寄生容量の非線形性考慮による高精度化—
Joint
陶堯、石川亮、本城和彦
電子情報通信学会和文論文誌C
J99-C/ 12, 651-658
2016/12/01
1881-0217


12 Paper
Yes
Experimental Design Method for High-Efficiency Microwave Power Amplifiers Based on a Low-Frequency Active Harmonic Load-Pull Technique
Joint
Ryo Ishikawa, Yoichiro Takayama, and Kazuhiko Honjo
IEICE Transactions on Electronics
E99-C/ 10, 1147-1155
2016/10/01



13 Paper
Yes
Miniature Design Technique of Stabilized C-Band p-HEMT MMIC Doherty Power Amplifier with Lumped Element Load Modulator
Joint
Tsuyoshi Yoshida, Yoichiro Takayama, Ryo Ishikawa, and Kazuhiko Honjo
IEICE Transactions on Electronics
E99-C/ 10, 1130-1139
2016/10/01



14 Paper
Yes
InGaAs MMIC SPST Switch Based on HPF/LPF Switching Concept With Periodic Structure
Joint
Hiroshi Mizutani, Ryo Ishikawa, and Kazuhiko Honjo
IEEE Transactions on Microwave Theory and Techniques
64/ 9, 2863-2870
2016/09/01



15 Paper
Yes
Miniaturization of Double Stub Resonators using Lumped-Element
Capacitors for MMIC Applications
Joint
Shinichi Tanaka, Takao Katayose, Hiroki Nishizawa, Ken’ichi Hosoya, Ryo Ishikawa, and Kazuhiko Honjo
IEICE Transactions on Electronics
E99-C/ 7, 830-836
2016/07/01



16 Paper
Yes
Novel Design of Dual-band Reconfigurable Dipole Antenna Using Lumped and Distributed Elements
Joint
Shoichi Onodera, Ryo Ishikawa, Akira Saitou, and Kazuhiko Honjo
IEICE Transactions on Communications
E99-B/ 7, 1550-1557
2016/07/01



17 Paper
Yes
5.8GHz帯可変焦点型ガウシアンビームアレイアンテナの簡素化
Joint
井上泰平、石川亮、斉藤昭、本城和彦
電子情報通信学会論文誌B
J98-B/ 9, 906-913
2015/09/01



18 Paper
Yes
Digital Spatial Modulation using Dual Scatterers Embedded with Switches for Wireless Power Transmission Applications
Joint
Kohei Hasegawa, Ryo Ishikawa, Akira Saitou, and Kazuhiko Honjo
IEICE Transactions on Electronics
E98-C/ 7, 709-715
2015/07/01



19 Paper
Yes
Power gain performance enhancement of independently biased heterojunction bipolar transistor cascode chip
Joint
Duy Manh Luong, Yoichiro Takayama, Ryo Ishikawa, and Kazuhiko Honjo
Japanese Journal of Applied Physics
54/ 4, 04DF11-1-04DF11-8
2015/04/01



20 Paper
Yes
A Miniature Broadband Doherty Power Amplifier With a Series-Connected Load
Joint
Shintaro Watanabe, Yoichiro Takayama, Ryo Ishikawa, Member, and Kazuhiko Honjo
IEEE Transactions on Microwave Theory and Techniques
63/ 2, 572-579
2015/02/01

10.1109/TMTT.2014.2377725

21 Paper
Yes
マイクロ波電力増幅器の統一的設計理論とその応用
Joint
本城和彦、高山洋一郎、石川亮
電子情報通信学会C論文誌
J97-C/ 12, 446-455
2014/12/01



22 Paper
Yes
熱メモリ効果解析のための大信号HEMT モデル用多段はしご型RC 熱回路のパルス応答評価による実験的パラメータ抽出手法
Joint
吉田慎悟、石川亮、本城和彦
電子情報通信学会C論文誌
J97-C/ 12, 456-462
2014/12/01



23 Paper
Yes
A High-Efficiency Low-Distortion Cascode Power Amplifier Consisting of Independently Biased InGaP/GaAs HBTs

Yuki Takagi, Yoichiro Takayama, Ryo Ishikawa, and Kazuhiko Honjo
IEICE Transactions on Electronics
E97-C/ 1, 58-64
2014/01/01



24 Paper
Yes
Spatially modulated communication method using dual scatterers embedded with lumped elements for wireless power transmission

Akira Saitou, Kohei Hasegawa, Ryo Ishikawa, and Kazuhiko Honjo
IEICE Transactions on Communications
E96-B/ 10, 2425-2430
2013/10



25 Paper
Yes
Analytical Design Method for a Low-Distortion Microwave InGaP/GaAs HBT Amplifier Based on Transient Thermal Behavior in a GaAs Substrate

Ryo Ishikawa, Junichi Kimura, and Kazuhiko Honjo
IEEE Transactions on Components, Packaging and Manufacturing Technology
3/ 10, 1705-1712
2013/10



26 Paper
Yes
Parasitic-Element Compensation Based on Factorization Method for Microwave
Inverse Class-F/Class-F Amplifiers

Osamu Miura, Ryo Ishikawa, and Kazuhiko Honjo
IEEE Microwave and Wireless Components Letters
22/ 10, 521-523
2012/10



27 Paper
Yes
5.65 GHz High-Efficiency GaN HEMT Power Amplifier With Harmonics Treatment up to Fourth Order

Masahiro Kamiyama, Ryo Ishikawa, and Kazuhiko Honjo
IEEE Microwave and Wireless Components Letters
22/ 6, 315-317
2012/06



28 Paper
Yes
A High-Efficiency, Low-Distortion GaN HEMT Doherty Power Amplifier with a Series Connected Load

Satoshi Kawai, Yoichiro Takayama, Ryo Ishikawa, and Kazuhiko Honjo
IEEE Transactions on Microwave Theory and Techniques
60/ 2, 352-360
2012/02



29 Paper
Yes
A Predistortion Diode Linearizer Technique with Automatic Average Power Bias Control for a Class-F GaN HEMT Power Amplifier

Akihiro Ando, Yoichiro Takayama, Tsuyoshi Yoshida, Ryo Ishikawa, and Kazuhiko Honjo
IEICE Transactions on Electronics
E94-C/ 7, 1193-1198
2011/07



30 Paper
Yes
UWB Active Balun Design with Small Group Delay Variation and Improved Return Loss

Kyoung-Pyo Ahn, Ryo Ishikawa, and Kazuhiko Honjo
IEICE Transactions on Electronics
E94-C/ 5, 905-908
2011/05



31 Paper
Yes
Microwave Inverse Class-F GaN HEMT Amplifier Circuit using Internal Harmonic Treatment Network

Tsuyoshi Toshida, Ryo Ishikawa, and Kazuhiko Honjo
電子情報通信学会C論文誌
J93-C/ 12, 557-564
2010/12



32 Paper
Yes
Parasitic Compensation Design Technique for a C-Band GaN HEMT Class-F Amplifier

Kenta Kuroda, Ryo Ishikawa, and Kazuhiko Honjo
IEEE Transactions on Microwave Theory and Techniques
58/ 11, 2741-2750
2010/11



33 Paper
Yes
Distortion Compensation for Thermal Memory Effect on InGaP/GaAs HBT Amplifier by Inserting RC-Ladder Circuit in Base Bias Circuit

Ryo Ishikawa, Junichi Kimura,Yukio Takahashi, and Kazuhiko Honjo
IEICE Transactions on Electronics
E93-C/ 7, 958-965
2010/07



34 Paper
Yes
Low Noise Group Delay Equalization Technique for UWB InGaP/GaAs HBT LNA

Kyoung-Pyo Ahn Ryo Ishikawa, and Kazuhiko Honjo
IEEE Microwave and Wireless Components Letters
20/ 7, 405-407
2010/07



35 Paper
Yes
Analysis of Millimeter-Wave Amplifier Module with Surface Wave Mode Transmission Line by FDTD Electromagnetic-Semiconductor Device Co-Simulation

Ryo Ishikawa, Kazuhiko Honjo, Masayuki Nakajima
Electronics and Communications in Japan
93/ 3, 8-15
2010/03



36 Paper
Yes
Group Delay Equalized MMIC Amplifier for UWB Based on
Right/Left-Handed Transmission Line Design Approach

Kenji Murase, Ryo Ishikawa, and Kazuhiko Honjo
IET Microwaves, Antennas & Propagation
3/ 6, 967-973
2009/09



37 Paper
Yes
Group Delay Equalized UWB InGaP/GaAs HBT MMIC Amplifier Using Negative Group Delay Circuits

Kyoung-Pyo Ahn, Ryo Ishikawa, and Kazuhiko Honjo
IEEE Transactions on Microwave Theory and Techniques
57/ 9, 2139-2147
2009/09



38 Paper
Yes
Synthesis for negative group delay circuits using distributed and second-order RC circuit configurations

Kyoung-Pyo Ahn, Ryo Ishikawa, Akira Saitou, and Kazuhiko Honjo
IEICE Transactions on Electronics
E92-C/ 9, 1176-1181
2009/09



39 Paper
Yes
Doppler frequency up conversion of electromagnetic waves in a slotline on an optically excited silicon substrate

J. Bae, Y. J. Xian, S. Yamada, R. Ishikawa
Applied Physics Letters
94/ 9, 091120-
2009/03



40 Paper
Yes
HBTの群遅延解析と負の群遅延回路を用いたその補償

安炅彪、石川亮、島田雅夫、本城和彦
電子情報通信学会B論文誌
J92-B/ 1, 11-19
2009/01



41 Paper
Yes
Inverse Class-F AlGaN/GaN HEMT Microwave Amplifier Based on Lumped Element Circuit Synthesis Method

Yasuyuki Abe, Ryo Ishikawa, Kazuhiko Honjo
IEEE Transactions on Microwave Theory and Techniques
56/ 12, 2748-2753
2008/12



42 Paper
Yes
InGaP/GaAs HBT MMIC Amplifier with Low Power Consumption and Low Noise Characteristics for Full- Band UWB Receiver Systems

Ryo Ishikawa, Takuya Abe, Kazuhiko Honjo, and Masao Shimada
IEICE Transactions on Electronics
E91-C/ 11, 1828-1831
2008/11



43 Paper
Yes
Analysis of Millimeterwave Amplifier Module with Surface Wave Mode Transmission Line by FDTD Electromagnetic-Semiconductor Device Co-Simulation

Ryo Ishikawa, Kazuhiko Honjo, Masayuki Nakajima
IEEJ Transactions on Electronics, Information and Systems (to be published)
128-C/ 6, 865-871
2008/06



44 Paper
Yes
Direct Analysis Technique for Long-Finger HBT by Electromagnetic and Device Co-Simulation

Yasuta Shinohara, Ryo Ishikawa, Kazuhiko Honjo
IEEE Transactions on Microwave Theory and Techniques
56/ 4, 747-754
2008/04



45 Paper
Yes
Accurate Distortion Prediction for Thermal Memory Effect in Power Amplifier Using Multi-Stage Thermal RC-Ladder Network

Yukio Takahashi, Ryo Ishikawa, Kazuhiko Honjo
IEICE Transactions on Electronics
E90-C/ 9, 1658-1663
2007/09



46 Paper
Yes
An Expression of High-Frequency Characteristics on a High-Density Multilayer Wiring Board Using an LC Ladder Network as a Unit Segment

Ryo Ishikawa, Norio Imai, and Kazuhiko Honjo
Electronics and Communications in Japan, Part 2
90/ 4, 18-25
2007/04



47 Paper
Yes
InGaP/GaAs HBT MMIC Amplifier with Active Balun for Ultra-Wideband Self-Complementary Antenna

Itaru Nakagawa, Ryo Ishikawa, Kazuhiko Honjo, Masao Shimada
IEICE Transactions on Electronics
E89-C/ 12, 1814-1820
2006/12



48 Paper
Yes
High-Speed and High-Density Semiconductor Package Modeling Using Optimaized Segment Extraction Method

大島大輔、井上博文、古谷充、境淳、石川亮、本城和彦
電子情報通信学会C論文誌
J89-C/ 11, 826-832
2006/11



49 Paper
Yes
An Expression of High-Frequency Characteristics on a High-Density Multi-Layer Wiring Board Using an LC Ladder Network as a Unit-Segment

Ryo Ishikawa, Norio Imai, Kazuhiko Honjo
電子情報通信学会C論文誌
J89-C/ 8, 538-544
2006/08



50 Paper
Yes
Microwave Class-F InGaP/GaAs HBT Power Amplifier Considering Up to 7th Order Higher Harmonic Frequencies

Masato Seki, Ryo Ishikawa, Kazuhiko Honjo
IEICE Transactions on Electronics
E89-C/ 7, 937-942
2006/07



51 Paper
Yes
Experimental verification of the theory on energy modulation of an electron beam with an optical near-field

R. Ishikawa, J. Bae, and K. Mizuno
IEICE Trans. on Electronics (Special Issue on Near Field Optics and Its Applications)
E85-C/ 12, 2086-2092
2002/12



52 Paper
Yes
Energy modulation of nonrelativistic electrons in an optical near-field on a metal microslit

R. Ishikawa, J. Bae, and K. Mizuno
J. Appl. Phys.
89/ 7, 4065-4069
2001/04



53 Paper
Yes
Energy modulation of nonrelativistic electrons with a CO2 laser using a metal microslit

J. Bae, R. Ishikawa, S. Okuyama, T. Miyajima, T. Akizuki, T. Okamoto, and K. Mizuno
Appl. Phys. Lett.
76/ 16, 2292-2294
2000/04



54 International conference proceedings, etc.
Yes
A 3.9-GHz-Band Outphasing Power Amplifier with Compact Combiner Based on Dual-Power-Level Design for Wide-Dynamic-Range Operation (to be presented)
Only
Ryoichi Ogasawara, Yoichiro Takayama, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2020 International Microwave Symposium
---
2020/06/21



55 International conference proceedings, etc.
Yes
A Novel Sub-6-GHz and 28-GHz GaN Switchable Diplexer MMIC for Carrier Aggregation with Massive MIMO Full Duplex Link
Joint
Hiroshi Mizutani, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2019 Asia Pacific Microwave Conference
1651-1653
2019/12/11



56 International conference proceedings, etc.
Yes
Harmonic-Tuned High-Efficiency GaN HEMT Doherty Power Amplifier Based on Two-Power-Level Impedance Optimization
Joint
Takuya Seshimo, Yoichiro Takayama, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2019 Asia Pacific Microwave Conference
375-377
2019/12/11



57 International conference proceedings, etc.
Yes
A 2.4 GHz-Band Enhancement-Mode GaAs HEMT Rectifier with 19% RF-to-DC Efficiency for 1 uW Input Power
Joint
Ryo Ishikawa, Tsuyoshi Yoshida, and Kazuhiko Honjo
Proc. of 49th European Microwave Conference
EUMC29-4, 591-594
2019/10/02



58 International conference proceedings, etc.
Yes
Proposal of a Novel SPDT Switch and Duplexer Dual-Function Circuit
Joint
Hiroshi Mizutani, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2019 International Conference on Solid State Devices and Materials
M-5-04, 539-540
2019/09/05



59 International conference proceedings, etc.
Yes
A High-Efficiency DC-to-RF/RF-to-DC Conversion Module with Zero-Threshold FET for Bidirectional Wireless Power Transfer
Joint
Takaharu Kume, Ryo Ishikawa, and Kazuhiko Honjo
Proc. PhotonIcs & Electromagnetics Research Symposium (PIERS)
4P3b-4
2019/06/20



60 International conference proceedings, etc.
Yes
18GHz-/28GHz-Band Gain-Boosted Feedback Power Amplifiers Using Affordable GaN HEMT MMIC Process
Joint
Tsukasa Yasui, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2018 Asia Pacific Microwave Conference
FR2-K-03, 1214-1216
2018/11/09



61 International conference proceedings, etc.
Yes
A Novel Reconfigurable GaN Filter MMIC with Active Reflector
Joint
Hitoshi Mizutani, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2018 Asia Pacific Microwave Conference
TH4-B2-4, 717-719
2018/11/08



62 International conference proceedings, etc.
Yes
GaN HEMT Darlington Power Amplifier with Independent Biasing for High-Efficiency Low-Distortion Wide-Dynamic-Range Adjustment
Joint
Atsushi Kitamura, Yoichiro Takayama, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2018 Asia Pacific Microwave Conference
TH1-D-03, 458-460
2018/11/08



63 International conference proceedings, etc.
Yes
High-Performance Long-Range OAM Communication Using Loop Antenna Arrays in 12-GHz Band

Hiroto Otsuka, Ryohei Yamagishi, Ryo Ishikaw, Akira Saitou, Hiroshi Suzuki, and Kazuhiko Honjo
Proc. of 2018 Asia Pacific Microwave Conference
TH3-IF-30, 1022-1024
2018/11/08



64 International conference proceedings, etc.
Yes
Double Multiplicity Exploiting Orthogonal Polarizations of OAM-Wave for OAM Communication with Loop Arrays

Akira Saitou, Hiroto Otsuka, Ryohei Yamagishi, Ryo Ishikaw, Hiroshi Suzuki, and Kazuhiko Honjo
Proc. of 2018 Asia Pacific Microwave Conference
TH2-B1-02, 494-496
2018/11/08



65 International conference proceedings, etc.
Yes
Advanced Mode Unity Using Loop Antennas Proximate to Reflector for Orbital Angular Momentum Communication
Joint
Ryohei Yamagishi, Hiroto Otsuka, Ryo Ishikaw, Akira Saitou, Hiroshi Suzuki, and Kazuhiko Honjo
Proc. of 2018 Asia Pacific Microwave Conference
TH2-B1-01, 491-493
2018/11/08



66 International conference proceedings, etc.
Yes
Fully Integrated Asymmetric Doherty Amplifier Based on Two-Power-Level Impedance Optimization
Joint
Ryo Ishikawa, Yoichiro Takayama, and Kazuhiko Honjo
Proc. of 48th European Microwave Conference
EuMC/EuMIC02-1, 253-256
2018/09/23



67 International conference proceedings, etc.
Yes
GHz-Band High-Efficiency Rectifier Design Based on MHz-Band Multi-Harmonic Active Source-Pull Technique
Only
Minato Machida, Ryo Ishikawa, Yoichiro Takayama, and Kazuhiko Honjo
Proc. of 2018 International Microwave Symposium
Th1B-4, 1134-1137
2018/06/14



68 International conference proceedings, etc.
Yes
Linearity Improvement for Single-GaN HEMT Dual-Band Power Amplifier in Concurrent Operation Mode
Joint
Alice Maruyama, Yoichiro Takayama, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2017 Asia Pacific Microwave Conference
THP1-P.12, 995-998
2017/11/16



69 International conference proceedings, etc.
Yes
Improvement of Mode Uniqueness for OAM Communication Using Loop Array with Reflector Plane
Joint
Ryohei Yamagishi, Hiroto Otsuka, Akira Saitou, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2017 Asia Pacific Microwave Conference
TH2-B-04, 1095-1098
2017/11/16



70 International conference proceedings, etc.
Yes
High Performance OAM Communication Using Loop Antennas Optimized for Port Azimuths
Joint
Hiroto Otsuka, Ryohei Yamagishi, Akira Saitou, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2017 Asia Pacific Microwave Conference
TH2-B-02, 1087-1090
2017/11/16



71 International conference proceedings, etc.
Yes
Analysis on Doubling Multiplicity for OAM Communication Using Loop Antenna Arrays
Joint
Akira Saitou, Hiroto Otsuka, Ryohei Yamagishi, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2017 Asia Pacific Microwave Conference
TH2-B-03, 1091-1094
2017/11/16



72 International conference proceedings, etc.
Yes
A Novel Two-Dimensional Changeover GaN MMIC Switch for Electrically Selectable SPDT Multifunctional Device
Joint
Hiroshi Mizutani, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 39th IEEE Compound Semiconductor IC (CSIC) Symposium
L.4, ---
2017/10/25



73 International conference proceedings, etc.
Yes
4.5-/4.9 GHz-Band Tunable High-EfficiencyGaN HEMT Power Amplifier
Joint
Kazuki Mashimo, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 47th European Microwave Conference
EuMC22-02, 460-463
2017/10/11



74 International conference proceedings, etc.
Yes
Wide-Band High-Efficiency GaN HEMT Amplifier Based on Dual-Band Multi-Harmonic Treatments
Joint
Yuki Takagi, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 47th European Microwave Conference
EuMC22-04, 468-471
2017/10/11



75 International conference proceedings, etc.
Yes
Analytical and Measured Estimation for4-Value Multiplexing OAM Communication Using Loop Array Antennas

Hiroto Otsuka, Ryohei Yamagishi, Akira Saitou, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 47th European Microwave Conference
EuMC03-05, 54-57
2017/10/10



76 International conference proceedings, etc.
Yes
Concurrent Dual-Band Amplifier Design Technique for 5G Wireless Systems
Joint
Kazuhiko Honjo, Yoichiro Takayama, and Ryo Ishikawa
Proc. of 12th Topical Workshop on Heterostructure Microelectronics
10-1, 85-86
2017/08/31



77 International conference proceedings, etc.
Yes
Concurrent Dual-Band Access GaN HEMT MMIC Amplifier Suppressing Inter-Band Interference

Ryo Ishikawa, Yoichiro Takayama, and Kazuhiko Honjo
Proc. of 2017 International Microwave Symposium
THIF2-14, 2045-2048
2017/06/08

10.1109/MWSYM.2017.8059072

78 International conference proceedings, etc.
Yes
Four-value Multiplexing Orbital Angular Momentum Communication Scheme Using Loop Antenna Arrays
Joint
Akira Saitou, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2016 Asia Pacific Microwave Conference
TH3A-3, --
2016/12/08



79 International conference proceedings, etc.
Yes
GaN SPST MMIC switches based on HPF/LPF switching concept for high power applications
Joint
Hiroshi Mizutani, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 46th European Microwave Conference
EuMC36-03, 691-694
2016/10/06



80 International conference proceedings, etc.
Yes
Parallel combination of high-efficiency amplifiers with spurious rejection for concurrent multiband operation
Joint
Jun Enomoto, Haruka Nishizawa, Ryo Ishikawa, Yoichiro Takayama, and Kazuhiko Honjo
Proc. of 46th European Microwave Conference
EuMC Poster01-26, 1075-1078
2016/10/04



81 International conference proceedings, etc.
Yes
Optimum Load Impedance Estimation for High-Efficiency Microwave Power Amplifier Based on Low-Frequency Active Multi-Harmonic Load-Pull Measurement
Joint
Yao Tao, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2015 Asia Pacific Microwave Conference
TU1G-4
2015/12/06



82 International conference proceedings, etc.
Yes
High Efficiency GaN HEMT Power Amplifier/Rectifier Module Design Using Time Reversal Duality
Joint
Kazuhiko Honjo, and Ryo Ishikawa
2015 IEEE Compound Semiconductor IC Symposim
Session P-1
2015/10/11



83 International conference proceedings, etc.
Yes
Multiband/Wideband Antennas and Emerging Antenna Technologies
Joint
Akira Saitou, Jin Long, Ryo Ishikawa, Kazuhiko Honjo
Proc. of IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications
235-238
2015/09/07



84 International conference proceedings, etc.
Yes
High-Efficiency DC-to-RF/RF-to-DC Interconversion Switching Module at C-Band

Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 45th European Microwave Conference
EuMC17-02, 295-298
2015/09/06



85 International conference proceedings, etc.
Yes
High Isolation MMIC Switch Design Technique Based on Novel High-/Low-Pass Switch Concept

Hiroshi Mizutani, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 45th European Microwave Conference
EuMC02-05, 56-59
2015/09/06



86 International conference proceedings, etc.
Yes
Efficient Supply Power Control by PWM Technique for Microwave Wireless Power Transfer Systems
Joint
Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2014 Asia Pacific Microwave Conference
FR03C-3, 1101-1103
2014/11/04



87 International conference proceedings, etc.
Yes
Two Signal Power Level Design for Shunt-Connected Type GaN HEMT Doherty Power Amplifier without a Quarter-Wave Inverter
Joint
Yosuke Iguchi, Yoichiro Takayama, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2014 Asia Pacific Microwave Conference
FR2B-4, 1004-1006
2014/11/04



88 International conference proceedings, etc.
Yes
Analytical Characteristic Expression for Dualband Antennas Embedded with Elements inside the Antenna
Joint
Akira Saitou, Shoichi Onodera, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2014 Asia Pacific Microwave Conference
FR1F-1, 971-973
2014/11/04



89 International conference proceedings, etc.
Yes
A 5.8-GHz Reconfigurable Power Divider for Wireless Power Transfer
Joint
Yusuke Ohta, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2014 Asia Pacific Microwave Conference
TH4D-1, 693-695
2014/11/04



90 International conference proceedings, etc.
Yes
Analysis on Rejection Band for a Practical Broadband Balun using an Asymmetric Coupled-line in Free Space
Joint
Daiki Endo, Akira Saitou, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2014 Asia Pacific Microwave Conference
WE1B-5, 28-30
2014/11/04



91 International conference proceedings, etc.
Yes
A 2.1/2.6 GHz Dual-Band High-Efficiency GaN HEMT Amplifier with Harmonic Reactive Terminations
Joint
Jun Enomoto, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 44th European Microwave Conference
EuMIC/EuMC Poster01-08, 1488-1491
2014/10/05



92 International conference proceedings, etc.
Yes
Comparison of Power Gain Performance between Conventional and Independently Biased HBT Cascode Chips
Joint
Luong Duy Manh, Yoichiro Takayama, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of International Conference on Solid State Devices and Materials
PS-6-1, 120-121
2014/09/08



93 International conference proceedings, etc.
Yes
Novel Design of Dual-band Reconfigurable Antennas Using Lumped-Elements and Varactors Located Inside Antenna's Conductor
Joint
Shoichi Onodera, Akira Saitou, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications
221-224
2014/08/03



94 International conference proceedings, etc.
Yes
Novel Frequency Tunable CRLH-TL for Reconfigurable Wireless Systems
Joint
Hiroshi Mizutani, Naoya Watanabe, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2014 International Conference on Electromagnetics in Advanced Applications
434-437
2014/08/03



95 International conference proceedings, etc.
Yes
Reversible High Efficiency Amplifier/Rectifier Circuit for Wireless Power Transmission System
Joint
Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2013 Asia Pacific Microwave Conference
W1F-1, 74-76
2013/11



96 International conference proceedings, etc.
Yes
Frequency Characteristic of Power Efficiency for 10W/30W-Class 2 GHz Band GaN HEMT Amplifiers with Harmonic Reactive Terminations

Tomohiro Yao, Ryo Ishikawa, Yoichiro Takayama, Kazuhiko Honjo, Hiroyoshi Kikuchi, Takashi Okazaki, Kazuhiro Ueda, and Eiichiro Otobe
Proc. of 2013 Asia Pacific Microwave Conference
P1-21, 745-747
2013/11



97 International conference proceedings, etc.
Yes
A 1.2-2.0 GHz-band GaAs pHEMT Cascode Power Amplifier MMIC Consisting of Independently Biased Transistors

Satoshi Tasaki, Yoichiro Takayama, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2013 Asia Pacific Microwave Conference
P1-14, 722-724
2013/11



98 International conference proceedings, etc.
Yes
Multi-band Reconfigurable Antennas Embedded with Lumped-Element Passive Components and Varactors
Joint
Shoichi Onodera, Ryo Ishikawa, Akira Saitou, and Kazuhiko Honjo
Proc. of 2013 Asia Pacific Microwave Conference
W2D-2, 137-139
2013/11



99 International conference proceedings, etc.
Yes
Analytical Expression of Linear Antenna's Characteristics Using Multipole Expansion and Chu's Equivalent Circuit

Akira Saitou, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2013 Asia Pacific Microwave Conference
F2F-2, 585-587
2013/11



100 International conference proceedings, etc.
Yes
Microwave Power Transfer Evaluation at 2.45 GHz Using a High-Efficiency GaAs HEMT Amplifier and Rectifier

Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2013 European Microwave Conference
EuMC49-4(916-919)-
2013/10



101 International conference proceedings, etc.
Yes
Novel Active CRLH Transmission Lines Incorporating FETs

Hiroshi Mizutani, Keito Ota, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 7th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics
Poster session I 39-
2013/09



102 International conference proceedings, etc.
Yes
Bi-Directional Wireless Power Transfer Technology for Wireless Sensor/Power Networks

Keito Ota, Hiroshi Mizutani, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications
786-789
2013/09



103 International conference proceedings, etc.
Yes
Parameter Extraction of c- and π- modes for Broadband Balun Using an Asymmetric Coupled Line

Akira Saitou, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2012 Asia Pacific Microwave Conference
2A2-03(22-24)-
2012/12



104 International conference proceedings, etc.
Yes
A Broadband Doherty Power Amplifier without a Quarter-Wave Impedance Inverting Network

Shintaro Watanabe, Yoichiro Takayama, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2012 Asia Pacific Microwave Conference
3A1-03(361-363)-
2012/12



105 International conference proceedings, etc.
Yes
Experimental Design Method for GHz-Band High-Efficiency Power Amplifiers Based on MHz-Band Active Harmonics Load-Pull Technique

Ryo Ishikawa, Yoichiro Takayama, and Kazuhiko Honjo
Proc. of 2012 Asia Pacific Microwave Conference
3B1-06(478-480)-
2012/12



106 International conference proceedings, etc.
Yes
Spatial Modulation Module Consisting of a Microstrip Array Antenna and Dual Scatterers for Wireless Power Transmission

Taihei Inoue, Kohei Hasegawa, Akira Saitou, Ryo Ishikawa, and Kazuhiko honjo
Proc. of 2012 International Symposium on Antennas and Propagation
2E2-3(459-462)-
2012/10



107 International conference proceedings, etc.
Yes
Novel Spatial Modulation Method Using Dual Scatterers for Wireless Power Transmission

Akira Saitou, Kohei Hasegawa, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2012 International Symposium on Antennas and Propagation
1E3-2(162-165)-
2012/10



108 International conference proceedings, etc.
Yes
Spatially Modulated Communication Method using Dual Scatterers for Wireless Power Transmission

Kohei Hasegawa, Ryo Ishikawa, Akira Saitou, and Kazuhiko Honjo
Proc. of 2012 European Microwave Conference
EuMIC/EuMC01-4(967-970)-
2012/10



109 International conference proceedings, etc.
Yes
Extension of EOSE Method to Weak Nonlinear Systems and Its application to InGaP/GaAs HBT MMIC Parallel Tracks

Hirobumi Inoue, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of Joint Conference of "International Conference on Electronics Packaging"
and "IMAPS All Asia Conference" (ICEP-IAAC 2012)
FD4-3
2012/04



110 International conference proceedings, etc.
Yes
Analytic Parameter Determination for Thermal Memory Effect Compensation Circuit in Microwave InGaP/GaAs HBT Power Amplifiers

Ryo Ishikawa, Junichi Kimura, and Kazuhiko Honjo
Proc. of 2011 Asia Pacific Microwave Conference
TU5P-27(315-318)-
2011/12



111 International conference proceedings, etc.
Yes
Spatial Modulation using Array Factor Control for Smart Grid Wireless Power Transmission

Kohei Hasegawa, Yuuya Hoshino, Ryo Ishikawa, Akira Saitou, and Kazuhiko Honjo
Proc. of 2011 Asia Pacific Microwave Conference
WE3E-02(837-840)-
2011/12



112 International conference proceedings, etc.
Yes
Miniature differential-mode dual-band antenna module embedded with broadband balun

Akira Saitou, Ryo Ishikawa, Yutaka Aoki, and Kazuhiko Honjo
Proc. of 2011 Asia Pacific Microwave Conference
TH1D-03(1298-1301)-
2011/12



113 International conference proceedings, etc.
Yes
High-Efficiency, Low-Distortion Microwave Cascode Power Amplifier with Independently Biased AlGaN/GaN HEMTs

Ryo Ishikawa, Yoichiro Takayama, and Kazuhiko Honjo
Proc. of 2011 Korea-Japan Microwave Conference
TH1-5-2(78-81)-
2011/11



114 International conference proceedings, etc.
Yes
Distributed Class-F/Inverse Class-F Circuit Considering up to Arbitary Harmonics with Parasitics Compensation

Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2011 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications
IWPT2-1(29-32)-
2011/05



115 International conference proceedings, etc.
Yes
Distortion Reduction of a GaN HEMT Doherty Power Amplifier with a Series Connected Load

Satoshi Kawai, Yoichiro Takayama, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2010 Asia Pacific Microwave Conference
TH1E-02(658-661)-
2010/12



116 International conference proceedings, etc.
Yes
Impulse UWB T/R MMIC Modules for Baseband Digital Signals

Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2010 European Microwave Conference
EuMC Poster04-4(1066-1069)-
2010/09



117 International conference proceedings, etc.
Yes
A GaN HEMT Doherty amplifier with a Series Connected Load

Satoshi Kawai, Yoichiro Takayama, Ryo Ishikawa, Kazuhiko Honjo
Proc. of 2009 Asia Pacific Microwave Conference
TU4F(325-328)
2009/12



118 International conference proceedings, etc.
Yes
A Predistortion Linearizer for a Class-F GaN HEMT Power Amplifier Using Two Independently Controlled Diodes

Akihiro Ando, Yoichiro Takayama, Tsuyoshi Yoshida, Ryo Ishikawa, Kazuhiko Honjo
Proc. of 2009 Asia Pacific Microwave Conference
TU1F(269-272)
2009/12



119 International conference proceedings, etc.
Yes
Group Delay Equalization Using Multiple Negative Group Delay Circuits

Kyoung-Pyo Ahn, Ryo Ishikawa, and Kazuhiko Honjo
Proceedings of Triangle Symposium on Advanced ICT
119-122
2009/10



120 International conference proceedings, etc.
Yes
Differential Output Impulse Generation InGaP/GaAsHBT MMIC for Impulse UWB System

Ryo Ishikawa, Kazuhiko Honjo
Proc. of 2009 European Microwave Integrated Circuits Conference
EuMIC Poster01-13(266-269)-
2009/09



121 International conference proceedings, etc.
Yes
A Novel Compensation Technique for Inter-Mudulation Distortion Related to the Thermal Memory Effect

Ryo Ishikawa, Junichi Kimura, Kazuhiko Honjo
Proc. of 2009 Korea-Japan Microwave Conference
169-172
2009/04



122 International conference proceedings, etc.
Yes
A High-Efficiency Class-F GaN HEMT Power Amplifier with a Diode Predistortion Linearizer

Akihiro Ando, Yoichiro Takayama, Tsuyoshi Yoshida, Ryo Ishikawa, Kazuhiko Honjo
Proc. of 2008 Asia Pacific Microwave Conference
A4-30
2008/12



123 International conference proceedings, etc.
Yes
High-Efficiency GaN-HEMT Class-F Amplifier Operating at 5.7 GHz

Kenta Kuroda, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 38th European Microwave Conference
EuMC23-4(440-443)-
2008/10



124 International conference proceedings, etc.
Yes
Global Analysis for a Surface Wave Mode HFET Amplifier Module at 60 GHz by EM-Device Co-Simulation

Ryo Ishikawa, Kazuhiko Honjo, and Masayuki Nakajima
Proc. of 2nd European Microwave Integrated Circuits Conference
EuMIC Poster-1(180-183)-
2007/10



125 International conference proceedings, etc.
Yes
Finger Length Optimization for AlGaN/GaN HEMT and InGaP/GaAs HBT by Using FDTD Electromagnetic and Device Co-Simulation Technique

Akira Chokki, Yasuta Shinohara, Ryo Ishikawa, and Kazuhiko Honjo
Proc. of 2007 International Conference on Solid State Devices and Materials(SSDM2007)
G-1-5(154-155)-
2007/09



126 International conference proceedings, etc.
Yes
Low Power Consumption and Low Noise InGaP/GaAs HBT MMIC Amplifier
for Full-Band UWB Receiver

Ryo Ishikawa, Takuya Abe, Masao Shimada, and Kazuhiko Honjo
Proc. of 2007 International Conference on Solid State Devices and Materials(SSDM2007)
G-3-3(302-303)-
2007/09



127 International conference proceedings, etc.
Yes
Long-Finger HBT Analysis Based on Device and EM Co-Simulation Using FDTD Method

Yasuta Shinohara, Ryo Ishikawa, Kazuhiko Honjo
Proc. of 2006 Asia Pacific Microwave Conference
1, WE4B-4(291-294)-
2006/12



128 International conference proceedings, etc.
Yes
Precise Modeling of Thermal Memory Effect for Power Amplifier Using Multi-Stage Thermal RC-Ladder Network

Yukio Takahashi, Ryo Ishikawa, Kazuhiko Honjo
Proc. of 2006 Asia Pacific Microwave Conference
1, WE4B-3(287-290)-
2006/12



129 International conference proceedings, etc.
Yes
Group Delay Compensation Technique for UWB MMIC Using Composite Right/Left-Handed Circuit

Kenji Murase, Ryo Ishikawa, Kazuhiko Honjo
Proc. of 2006 Asia Pacific Microwave Conference
3, FR1A-2(1409-1412)-
2006/12



130 International conference proceedings, etc.
Yes
Microwave Class-F InGaP/GaAs HBT Power Amplifier Considering up to 7th-order Higher Harmonic Frequencies

Masato Seki, Ryo Ishikawa, Kazuhiko Honjo
Proc. of 6th Topical Workshop on Heterostructure Microelectronics
TuA-4(12-13)-
2005/08



131 International conference proceedings, etc.
Yes
Interaction between low-energy electrons and optical evanescent waves

J. Bae, R. Ishikawa, and K. Mizuno
Proc. of Progress In Electromagnetics Research Symposium(PIERS 2001)
655-
2001/07



132 International conference proceedings, etc.
No
Energy modulation of nonrelativistic electrons with infrared evanescent waves

J. Bae, R. Ishikawa, and K. Mizuno
Proc. of 25th International Conference on Infrared and Millimeter Waves
31-32
2000/09



133 International conference proceedings, etc.
Yes
Electron energy modulation with near-fields

R. Ishikawa, J. Bae, and K. Mizuno
Proc. of 5th International Conference on Near Field Optics and Related Techniques
173-174
1998/12



134 Tutorial
No
近接場光による電子ビームの変調とその検出

ベイジョンソク,石川亮
OplusE
26/ 4, 412-417
2004/03