Speech recognition technology combined with three-dimensional lip movement. - Kazumi Komiya; Ryo Ishikawa; Keiko Momose (Three-Dimensional Image Capture and Applications, 2001)

Finite Element Analysis and Experimental Study on Mechanism of Brain Injury Using Brain Model. - Ryo Ishikawa; Kazuo Kato; Mitsunori Kubo; Takeo Uzuka; Hideaki Takahashi (EMBC, 2006)

InGaP/GaAs HBT MMIC Amplifier with Active Balun for Ultra-Wideband Self-Complementary Antenna. - Itaru Nakagawa; Ryo Ishikawa; Kazuhiko Honjo; Masao Shimada (IEICE Trans. Electron., 2006)

Microwave Class-F InGaP/GaAs HBT Power Amplifier Considering up to 7th-Order Higher Harmonic Frequencies. - Masato Seki; Ryo Ishikawa; Kazuhiko Honjo (IEICE Trans. Electron., 2006)

Accurate Distortion Prediction for Thermal Memory Effect in Power Amplifier Using Multi-Stage Thermal RC-Ladder Network. - Yukio Takahashi; Ryo Ishikawa; Kazuhiko Honjo (IEICE Trans. Electron., 2007)

Evaluation of Information Leakage from PC Displays Using Spectrum Analyzers. - Toshihide Tosaka; Yukio Yamanaka; Kaori Fukunaga; Ryo Ishikawa; Mitsuo Hattori (IEICE Trans. Commun., 2007)

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; Masao Shimada (IEICE Trans. Electron., 2008)

Synthesis for Negative Group Delay Circuits Using Distributed and Second-Order RC Circuit Configurations. - Kyoung-Pyo Ahn; Ryo Ishikawa; Akira Saitou; Kazuhiko Honjo (IEICE Trans. Electron., 2009)

A Fast Registration Method Using IP and Its Application to Ultrasound Image Registration. - Bo Zheng 001; Ryo Ishikawa; Takeshi Oishi; Jun Takamatsu; Katsushi Ikeuchi (Inf. Media Technol., 2009)

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; Kazuhiko Honjo (IEICE Trans. Electron., 2010)

UWB Active Balun Design with Small Group Delay Variation and Improved Return Loss. - Kyoung-Pyo Ahn; Ryo Ishikawa; Kazuhiko Honjo (IEICE Trans. Electron., 2011)

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; Kazuhiko Honjo (IEICE Trans. Electron., 2011)

Spatially Modulated Communication Method Using Dual Scatterers Embedded with Lumped Elements for Wireless Power Transmission. - Akira Saitou; Kohei Hasegawa; Ryo Ishikawa; Kazuhiko Honjo (IEICE Trans. Commun., 2013)

Breast MR Image Fusion by Deformable Implicit Polynomial (DIP). - Bo Zheng 001; Ryo Ishikawa; Jun Takamatsu; Katsushi Ikeuchi; Takaaki Endo; Kiyohide Sato; Takayuki Ueno; Tomoharu Sugie; Masakazu Toi; Shotaro Kanao; Kaori Togashi (Inf. Media Technol., 2013)

A High-Efficiency Low-Distortion Cascode Power Amplifier Consisting of Independently Biased InGaP/GaAs HBTs. - Yuki Takagi; Yoichiro Takayama; Ryo Ishikawa; Kazuhiko Honjo (IEICE Trans. Electron., 2014)

Digital Spatial Modulation Using Dual Scatterers Embedded with Switches for Wireless Power Transmission Applications. - Kohei Hasegawa; Ryo Ishikawa; Akira Saitou; Kazuhiko Honjo (IEICE Trans. Electron., 2015)

Experimental Design Method for High-Efficiency Microwave Power Amplifiers Based on a Low-Frequency Active Harmonic Load-Pull Technique. - Ryo Ishikawa; Yoichiro Takayama; Kazuhiko Honjo (IEICE Trans. Electron., 2016)

Novel Design of Dual-Band Reconfigurable Dipole Antenna Using Lumped and Distributed Elements. - Shoichi Onodera; Ryo Ishikawa; Akira Saitou; Kazuhiko Honjo (IEICE Trans. Commun., 2016)

Miniaturization of Double Stub Resonators Using Lumped-Element Capacitors for MMIC Applications. - Shinichi Tanaka; Takao Katayose; Hiroki Nishizawa; Ken'ichi Hosoya; Ryo Ishikawa; Kazuhiko Honjo (IEICE Trans. Electron., 2016)

Miniature Design Technique of Stabilized C-Band p-HEMT MMIC Doherty Power Amplifier with Lumped Element Load Modulator. - Tsuyoshi Yoshida; Yoichiro Takayama; Ryo Ishikawa; Kazuhiko Honjo (IEICE Trans. Electron., 2016)

Microwave Characteristics of an Independently Biased 3-Stack InGaP/GaAs HBT Configuration. - Manh Duy Luong; Ryo Ishikawa; Yoichiro Takayama; Kazuhiko Honjo (IEEE Trans. Circuits Syst. I Regul. Pap., 2017)

4.5-/4.9-GHz-Band Selective High-Efficiency GaN HEMT Power Amplifier by Characteristic Impedance Switching. - Kazuki Mashimo; Ryo Ishikawa; Kazuhiko Honjo (IEICE Trans. Electron., 2018)

83nJ/bit Transmitter Using Code-Modulated Synchronized-OOK on 65nm SOTB for Normally-Off Wireless Sensor Networks. - Van-Trung Nguyen; Ryo Ishikawa; Koichiro Ishibashi (IEICE Trans. Electron., 2018)

High Performance OAM Communication Exploiting Port-Azimuth Effect of Loop Antennas. - Hiroto Otsuka; Ryohei Yamagishi; Akira Saitou; Hiroshi Suzuki; Ryo Ishikawa; Kazuhiko Honjo (IEICE Trans. Commun., 2019)

Class-F GaN HEMT Amplifiers Using Compact CRLH Harmonic Tuning Stubs Designed Based on Negative Order Resonance Modes. - Shinichi Tanaka; Sota Koizumi; Ryo Ishikawa; Kazuhiko Honjo (IEICE Trans. Electron., 2019)

Adaptive Voxel Matching for Temporal CT Subtraction. - Toru Tanaka; Ryo Ishikawa; Keita Nakagomi; Kazuhiro Miyasa; Kiyohide Satoh; Masahiro Yakami; Thai Akasaka; Koji Onoue; Takeshi Kubo; Mizuho Nishio; Yutaka Emoto; Kaori Togashi (J. Digit. Imaging, 2020)

Doherty Amplifier Design Based on Asymmetric Configuration Scheme. - Ryo Ishikawa; Yoichiro Takayama; Kazuhiko Honjo (IEICE Trans. Electron., 2021)

Pattern Synthesis of Spatial Eigenmodes Exploiting Spherical Conformal Array. - Akira Saitou; Ryo Ishikawa; Kazuhiko Honjo (IEICE Trans. Commun., 2022)

Cloud Data Acquisition from Shared-Use Facilities in A University-Scale Laboratory Information Management System. - Masatoshi Hanai; Mitsuaki Kawamura; Ryo Ishikawa; Toyotaro Suzumura; Kenjiro Taura (UCC, 2023)

CNN-based fully automatic mitral valve extraction using CT images and existence probability maps. - Yukiteru Masuda; Ryo Ishikawa; Toru Tanaka; Gakuto Aoyama; Keitaro Kawashima; James V. Chapman; Masahiko Asami; Michael Huy Cuong Pham; Klaus Fuglsang Kofoed; Takuya Sakaguchi; Kiyohide Satoh (CoRR, 2023)

ARIM-mdx Data System: Towards a Nationwide Data Platform for Materials Science. - Masatoshi Hanai; Ryo Ishikawa; Mitsuaki Kawamura; Masato Ohnishi; Norio Takenaka; Kou Nakamura; Daiju Matsumura; Seiji Fujikawa; Hiroki Sakamoto; Yukinori Ochiai; Tetsuo Okane; Shin-Ichiro Kuroki; et al. (IEEE Big Data, 2024)

ARIM-mdx Data System: Towards a Nationwide Data Platform for Materials Science. - Masatoshi Hanai; Ryo Ishikawa; Mitsuaki Kawamura; Masato Ohnishi; Norio Takenaka; Kou Nakamura; Daiju Matsumura; Seiji Fujikawa; Hiroki Sakamoto; Yukinori Ochiai; Tetsuo Okane; Shin-Ichiro Kuroki; et al. (CoRR, 2024)

Analysis of Beamforming for OAM Communication Using Loop Antenna Arrays and Paraboloids. - Akira Saitou; Kaito Uchida; Kanki Kitayama; Ryo Ishikawa; Kazuhiko Honjo (IEICE Trans. Commun., 2024)

A 2-GHz GaN HEMT Power Amplifier Harmonically Tuned Using a Compact One-Port CRLH Transmission Line. - Shinichi Tanaka; Ryota Mogami; Naoki Iisaka; Kazuhiko Honjo; Ryo Ishikawa (IET Circuits Devices Syst., 2024)

Performance Enhancement of Dual-Input Frequency-Periodic Load Modulated Power Amplifier at 1-5.7-GHz Bandwidth With Co-Designed Biasing Network. - Takuma Torii; Yuji Komatsuzaki; Shintaro Shinjo; Ryo Ishikawa (IEEE Access, 2025)