A Wideband 16×16-Element Corporate-Feed Hollow-Waveguide Slot Array Antenna in the 60-GHz Band. - Takashi Tomura; Jiro Hirokawa; Takuichi Hirano; Makoto Ando (IEICE Trans. Commun., 2014)

Simultaneous Optimal Design Method of Primary Radiator and Main Reflector for Shaped Beam Antennas. - Takashi Tomura; Michio Takikawa; Yoshio Inasawa; Hiroaki Miyashita (IEICE Trans. Commun., 2017)

Millimeter-Wave Frequency Beam Scanning Array With a Phase Shifter Based on Substrate-Integrated-Waveguide. - Xiaohe Cheng; Yuan Yao 003; Takashi Tomura; Jiro Hirokawa; Tao Yu; Junsheng Yu; Xiaodong Chen (IEEE Access, 2018)

A Compact Multi-Beam End-Fire Circularly Polarized Septum Antenna Array for Millimeter-Wave Applications. - Xiaohe Cheng; Yuan Yao 003; Takashi Tomura; Jiro Hirokawa; Tao Yu; Junsheng Yu; Xiaodong Chen (IEEE Access, 2018)

Millimeter Wave Antenna for Information Shower: Design Choices and Performance. - Sergio Barberis; Daniele Disco; Roberto Vallauri; Takashi Tomura; Jiro Hirokawa (EuCNC, 2019)

Development of Compact SAR Systems for Small Satellite. - Hirobumi Saito; Koichi Ijichi; Jiro Hirokawa; Takashi Tomura; Prilando Rizki Akbar; Pyne Budhaditya; Koji Tanaka; Makoto Mita; Tomoki Kaneko; Hiromi Watanabe (IGARSS, 2019)

A 20-GHz-Band 64 × 64 Hollow Waveguide Two-Dimensional Butler Matrix. - Takashi Tomura; Dong-Hun Kim; Masahiro Wakasa; Yuki Sunaguchi; Jiro Hirokawa; Kentaro Nishimori (IEEE Access, 2019)

Perpendicular-Corporate Feed in a Four-Layer Circularly-Polarized Parallel-Plate Slot Array. - Hisanori Irie; Takashi Tomura; Jiro Hirokawa (IEICE Trans. Commun., 2019)

A PCB-Integratable Metal Cap Slot Antenna for 60-GHz Band Mobile Terminals. - Takashi Tomura; Haruhisa Hirayama; Jiro Hirokawa (IEICE Trans. Commun., 2019)

Wideband Design of a Short-Slot 2-Plane Coupler by the Mode Matching/FEM Hybrid Analysis Considering the Structural Symmetry. - Masahiro Wakasa; Dong-Hun Kim; Takashi Tomura; Jiro Hirokawa (IEICE Trans. Commun., 2019)

Laser-Drilled All-Dielectric Huygens' Transmit-Arrays as 120 GHz Band Beamformers. - Mohamed K. Emara; Sonya K. Stuhec-Leonard; Takashi Tomura; Jiro Hirokawa; Shulabh Gupta (IEEE Access, 2020)

Novel Unmanned Aerial Vehicle-Based Line-of-Sight MIMO Configuration Independent of Transmitted Distance Using Millimeter Wave. - Naoki Matsumura; Kentaro Nishimori; Ryotaro Taniguchi; Takefumi Hiraguri; Takashi Tomura; Jiro Hirokawa (IEEE Access, 2020)

8 × 2-Element 60-GHz-Band Circularly Polarized Post-Wall Waveguide Slot Array Antenna Loaded With Dipoles. - Takashi Tomura; Yuta Saito; Jiro Hirokawa (IEEE Access, 2020)

Transmission Enhancement in Rectangular-Coordinate Orthogonal Multiplexing by Excitation Optimization of Slot Arrays for a Given Distance in the Non-Far Region Communication. - Ryotaro Ohashi; Takashi Tomura; Jiro Hirokawa (IEICE Trans. Commun., 2020)

Sidelobe Suppression in Both the E and H Planes Using Slit Layers over a Corporate-Feed Waveguide Slot Array Antenna Consisting of 2×2-Element Radiating Units. - Haruka Arakawa; Takashi Tomura; Jiro Hirokawa (IEICE Trans. Commun., 2020)

Experimental Evaluation of Intersymbol Interference in Non-Far Region Transmission using a Large Array Antenna in the Millimeter-Wave Band. - Tuchjuta Ruckkwaen; Takashi Tomura; Kiyomichi Araki; Jiro Hirokawa; Makoto Ando (IEICE Trans. Commun., 2020)

Development and Performance Evaluation of Small SAR System for 100-kg Class Satellite. - Pyne Budhaditya; Hirobumi Saito; Prilando Riziki Akbar; Jiro Hirokawa; Takashi Tomura; Koji Tanaka (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2020)

Proof-of-Concept on Misalignment Compensation for 5.8-GHz-Band Reflectarray Antennas by Varactor Diodes. - Keisuke Omoto; Takashi Tomura; Hiraku Sakamoto (IEEE Access, 2021)

Transmission Characteristics Control of 120 GHz-Band Bandstop Filter by Coupling Alignment-Free Lattice Pattern. - Akihiko Hirata; Koichiro Itakura; Taiki Higashimoto; Yuta Uemura; Tadao Nagatsuma; Takashi Tomura; Jiro Hirokawa; Norihiko Sekine; Issei Watanabe; Akifumi Kasamatsu (IEICE Trans. Electron., 2021)

Control of 120-GHz-Band Split Ring Resonator Filter by Coupling Lattice Pattern Substrate. - Koichiro Itakura; Akihiko Hirata; Masato Sonoda; Taiki Higashimoto; Tadao Nagatsuma; Takashi Tomura; Jiro Hirokawa; Norihiko Sekine; Issei Watanabe; Akifumi Kasamatsu (IEICE Trans. Electron., 2021)

A Wideband and High-Gain All-Metallic Perpendicular-Corporate-Fed Multi-Layered Parallel-Plate Slot Array Antenna. - Shuang Ji; Jiro Hirokawa; Takashi Tomura (IEEE Access, 2022)

Control of Radiation Direction in an Aperture Array Excited by a Waveguide 2-Plane Hybrid Coupler. - Yuki Sunaguchi; Takashi Tomura; Jiro Hirokawa (IEICE Trans. Commun., 2022)

Design for Operation in Two Frequency Bands by Division of the Coupled Region in a Waveguide 2-Plane Coupler. - Shihao Chen; Takashi Tomura; Jiro Hirokawa; Kota Ito; Mizuki Suga; Yushi Shirato; Daisei Uchida; Naoki Kita (IEICE Trans. Electron., 2022)

A 2.95mW/element Ka-band CMOS Phased-Array Receiver Utilizing On-Chip Distributed Radiation Sensors in Low-Earth-Orbit Small Satellite Constellation. - Xi Fu; Dongwon You; Xiaolin Wang; Michihiro Ide; Yuncheng Zhang; Jun Sakamaki; Ashbir Aviat Fadila; Zheng Li 021; Yun Wang 008; Jumpei Sudo; Makoto Higaki; Soichiro Inoue; et al. (ISSCC, 2023)

A Small-Satellite-Mounted 256-Element Ka-Band CMOS Phased-Array Transmitter Achieving 63.8dBm EIRP Under 26.6W Power Consumption Using Single/Dual Circular Polarization Active Coupler. - Dongwon You; Xi Fu; Xiaolin Wang; Yuan Gao; Wenqian Wang; Jun Sakamaki; Hans Herdian; Sena Kato; Michihiro Ide; Yuncheng Zhang; Ashbir Aviat Fadila; Zheng Li 021; et al. (ISSCC, 2023)

A Two-Dimensional 6×4-Way Hollow Waveguide Beam-Switching Matrix. - Qi Li; Jiro Hirokawa; Takashi Tomura; Yuta Takahashi; Naoki Kita; Nelson J. G. Fonseca (IEEE Access, 2023)

A Center-Fed Dual-Polarized Parallel-Plate Waveguide Slot Array Antenna Based on a Feeding Waveguide With Centered Longitudinal Feeding Slots. - Huanqian Xiong; Jiro Hirokawa; Takashi Tomura (IEEE Access, 2023)

A Low-Power 256-Element Ka-Band CMOS Phased-Array Receiver With On-Chip Distributed Radiation Sensors for Small Satellite Constellations. - Xi Fu; Dongwon You; Xiaolin Wang; Yun Wang 008; Carolyn Jill Mayeda; Yuan Gao; Michihiro Ide; Yuncheng Zhang; Jun Sakamaki; Ashbir Aviat Fadila; Zheng Li 021; Jumpei Sudo; et al. (IEEE J. Solid State Circuits, 2023)

No Victim Left Behind: Developing a Dual-Use LEO Satellite System for Real-Time Population Mapping and Everyday Connectivity. - Takumi Ohashi; Futo Noda; Takashi Tomura; Ampan Laosunthara; Koudai Suzuki; Yuno Tanaka; Maki Kishimoto; Rie Seto; Hiraku Sakamoto; Gia Khanh Tran; Atsushi Shirane (ISCIT, 2024)

A 28GHz 5G NR Wirelessly Powered Relay Transceiver Using Rectifier-Type 4th-Order Sub-Harmonic Mixer. - Sena Kato; Shu Date; Tao Ruoxin; Yasuto Narukiyo; Hiroki Hayashi; Keito Yuasa; Michihiro Ide; Takashi Tomura; Kenichi Okada 001; Atsushi Shirane (VLSI Technology and Circuits, 2024)

An Inverted-L Monopole Array With High Beam Coverage for Antenna-in-Package Modules at the 151.5-164 GHz Band. - Alberto Hernández-Escobar; Takashi Tomura; Ryosuke Hasaba; Hiroshi Taneda; Issei Watanabe (IEEE Access, 2024)

Stretchable-Substrate-Impregnated Fabric: Deployable Reflectarray Antennas for CubeSats. - Masato Machida; Takashi Tomura; Hiraku Sakamoto; Tomohiro Fukao (IEEE Access, 2024)

Effective Design of an Array of Coupling Slots With a Reflection-Canceling Wall for a Parallel-Plate Slot Array Antenna. - Tianyu Wang; Takashi Tomura; Jiro Hirokawa (IEEE Access, 2024)

11.1 A 256-Element Ka-Band CMOS Phased-Array Receiver Using Switch-Type Quadrature-Hybrid-First Architecture for Small Satellite Constellations. - Sena Kato; Jill C. Mayeda; Keito Yuasa; Michihiro Ide; Takeshi Ota; Shu Date; Yudai Yamazaki; Xiaolin Wang; Xi Fu; Dongwon You; Makoto Higaki; Jumpei Sudo; et al. (ISSCC, 2025)

A LEO Satellite Mounted 256-Element 19 GHz CMOS Phased-Array Transmitter With On-Chip Amplitude and Phase Monitor. - Xiaolin Wang; Dongwon You; Xi Fu; Gao Yuan; Takeshi Ota; Jill C. Mayeda; Jun Sakamaki; Ashbir Aviat Fadila; Makoto Higaki; Jumpei Sudo; Hiroshi Takizawa; Masashi Shirakura; et al. (IEEE Access, 2025)

A 640-Gb/s 4 × 4-MIMO D-Band CMOS Transceiver Chipset. - Chenxin Liu; Zheng Li 021; Yudai Yamazaki; Hans Herdian; Chun Wang; Anyi Tian; Jun Sakamaki; Han Nie; Xi Fu; Sena Kato; Wenqian Wang; Hongye Huang; et al. (IEEE J. Solid State Circuits, 2025)