Hiroyuki Sakai

According to our database, Hiroyuki Sakai authored at least 26 papers between 2023 and 2026.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2026

A Power-Efficient K-Band Circular Polarized 256-Element CMOS Phased-Array Transmitter With Coupler-End Structure for LEO Satellite Terminal.

Xiaolin Wang, Dongwon You, Xi Fu, Takeshi Ota, Michihiro Ide, Sena Kato, Jill C. Mayeda, Makoto Higaki, Jumpei Sudo, Hiroshi Takizawa, Masashi Shirakura, Takashi Tomura, Hiroyuki Sakai, Kazuaki Kunihiro, Kenichi Okada, Atsushi Shirane

IEEE J. Solid State Circuits, May, 2026

A 142-164-GHz Phased-Array AiP Module With High-Power-Density and High-Efficiency Transceiver in 65-nm CMOS for 6G UE.

Yudai Yamazaki, Yohei Morishita, Sunghwan Park, Takaya Uchino, Chenxin Liu, Jun Sakamaki, Akihiro Egami, Ryosuke Hasaba, Ken Takahashi, Tomoki Abe, Tomohiro Murata, Yoichi Nakagawa, Takashi Tomura, Hiroshi Taneda, Kei Murayama, Makoto Tsukahara, Hiroko Ota, Yoko Nakabayashi, Ryuji Kinugawa, Takumi Kojima, Anyi Tian, Kotaro Ito, Chun Wang, Hans Herdian, Yi Zhang, Zheng Li, Wenqian Wang, Hongye Huang, Dingxin Xu, Sena Kato, Michihiro Ide, Shinsuke Hara, Issei Watanabe, Akifumi Kasamatsu, Yuncheng Zhang, Hiroyuki Sakai, Kazuaki Kunihiro, Atsushi Shirane, Koji Takinami, Kenichi Okada

IEEE J. Solid State Circuits, April, 2026

A 52 Gb/s 8.9-dBm EIRP 300-GHz-Band Amplifier-Last Outphasing Transmitter With Path Mismatch Calibration in 65-nm CMOS.

Chun Wang, Olivia Angel Yong, Hans Herdian, Wenqian Wang, Abanob Shehata, Carrel da Gomez, Chenxin Liu, Yudai Yamazaki, Kazuaki Kunihiro, Hiroyuki Sakai, Yuncheng Zhang, Atsushi Shirane, Kenichi Okada

IEEE J. Solid State Circuits, April, 2026

27.6 A 9.7GHz Self-Linearized-VCO-Based FMCW Chirp Generator Achieving 1.56GHz/μs Slope and 0.57μS Duration with 0.094% RMS Frequency Error.

Daxu Zhang, Yuncheng Zhang, Zezheng Liu, Yuang Xiong, Michele Rossoni, Wenqian Wang, Ashbir Aviat Fadila, Duo Li, Minzhe Tang, Dongfan Xu, Carrel de Gomez, Dingxin Xu, Kazuaki Kunihiro, Hiroyuki Sakai, Kenichi Okada

Proceedings of the IEEE International Solid-State Circuits Conference, 2026

2025

CORDIC-Less Digital Polar Transmitter Architecture Based on Delta-Sigma Modulator.

Yuncheng Zhang, Zezheng Liu, Duo Li, Minzhe Tang, Yi Zhang, Hongye Huang, Dingxin Xu, Waleed Madany, Ashbir Aviat Fadila, Wenqian Wang, Yuang Xiong, Daxu Zhang, Garry Pranata Kusuma, Hiroyuki Sakai, Kazuaki Kunihiro, Atsushi Shirane, Kenichi Okada

IEEE J. Solid State Circuits, December, 2025

A Compact D-Band Phase Shifter With 0.1-Degree Phase Resolution and Ultra-Low Phase Error in 65-nm CMOS.

Takaya Uchino, Yudai Yamazaki, Anyi Tian, Chenxin Liu, Sunghwan Park, Abanob Shehata, Sena Kato, Takumi Kojima, Haruto Tanaka, Masayuki Kikuchi, Jill C. Mayeda, Ryuji Kinugawa, Hiroyuki Sakai, Kazuaki Kunihiro, Atsushi Shirane, Kenichi Okada

IEEE J. Solid State Circuits, October, 2025

A 640-Gb/s 4 × 4-MIMO D-Band CMOS Transceiver Chipset.

Chenxin Liu, Zheng Li, Yudai Yamazaki, Hans Herdian, Chun Wang, Anyi Tian, Jun Sakamaki, Han Nie, Xi Fu, Sena Kato, Wenqian Wang, Hongye Huang, Minzhe Tang, Dingxin Xu, Shinsuke Hara, Akifumi Kasamatsu, Takashi Tomura, Hiroyuki Sakai, Kazuaki Kunihiro, Atsushi Shirane, Kenichi Okada

IEEE J. Solid State Circuits, April, 2025

A 160-Gb/s D-Band Bi-Directional CMOS Mixer Covering 112-170 GHz for 6G Transceivers.

Chenxin Liu, Yudai Yamazaki, Anyi Tian, Chun Wang, Hans Herdian, Abanob Shehata, Han Nie, Minzhe Tang, Hiroyuki Sakai, Kazuaki Kunihiro, Atsushi Shirane, Kenichi Okada

IEEE Solid State Circuits Lett., 2025

A 2.5 dB noise figure 28 GHz current-reused noise-cancelling LNA with g_m-boosting in 65 nm CMOS for millimeter-wave MIMO applications.

Yi Zhang, Minzhe Tang, Dongfan Xu, Jian Pang, Hiroyuki Sakai, Kazuaki Kunihiro, Atsushi Shirane, Kenichi Okada

IEICE Electron. Express, 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, Takashi Tomura, Hiroyuki Sakai, Kazuaki Kunihiro, Kenichi Okada, Atsushi Shirane

IEEE Access, 2025

Experimental Testbed for Frequency-Division Multiplexed Joint Radar-Communication System Validation in D-Band Using a 65-nm CMOS Communication Transceiver.

Carrel da Gomez, Chenxin Liu, Hans Herdian, Hiroyuki Sakai, Kazuaki Kunihiro, Kenichi Okada

IEEE Access, 2025

5.6 A Power-Efficient CORDIC-Less Digital Polar Transmitter Using 1b DSM-Based PA Supporting 256-QAM.

Yuncheng Zhang, Zezheng Liu, Duo Li, Minzhe Tang, Yi Zhang, Hongye Huang, Dingxin Xu, Waleed Madany, Ashbir Aviat Fadila, Wenqian Wang, Yuang Xiong, Daxu Zhang, Garry Pranata Kusuma, Hiroyuki Sakai, Kazuaki Kunihiro, Atsushi Shirane, Kenichi Okada

Proceedings of the IEEE International Solid-State Circuits Conference, 2025

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, Hiroshi Takizawa, Masashi Shirakura, Takashi Tomura, Hiroyuki Sakai, Kazuaki Kunihiro, Kenichi Okada, Atsushi Shirane

Proceedings of the IEEE International Solid-State Circuits Conference, 2025

A 4-Stream 8-Element Time-Division MIMO Phased-Array Receiver for 5G NR and Beyond Achieving 9.6Gbps Data Rate.

Yi Zhang, Minzhe Tang, Zheng Li, Dongfan Xu, Kazuaki Kunihiro, Hiroyuki Sakai, Atsushi Shirane, Kenichi Okada

Proceedings of the 30th Asia and South Pacific Design Automation Conference, 2025

A D-Band CMOS Transceiver Chipset Supporting 640Gb/s Date Rate with 4?4 Line-of-Sight MIMO.

Chenxin Liu, Zheng Li, Yudai Yamazaki, Hans Herdian, Chun Wang, Anyi Tian, Jun Sakamaki, Han Nie, Xi Fu, Sena Kato, Wenqian Wang, Hongye Huang, Shinsuke Hara, Akifumi Kasamatsu, Hiroyuki Sakai, Kazuaki Kunihiro, Atsushi Shirane, Kenichi Okada

Proceedings of the 30th Asia and South Pacific Design Automation Conference, 2025

2024

A Sub-THz Full-Duplex Phased-Array Transceiver With Self-Interference Cancellation and LO Feedthrough Suppression.

Chun Wang, Ibrahim Abdo, Chenxin Liu, Carrel da Gomez, Jill C. Mayeda, Hans Herdian, Wenqian Wang, Xi Fu, Dongwon You, Abanob Shehata, Sunghwan Park, Yun Wang, Jian Pang, Hiroyuki Sakai, Atsushi Shirane, Kenichi Okada

IEEE J. Solid State Circuits, April, 2024

A 28GHz 4-Stream Time-Division MIMO Phased-Array Receiver Utilizing Nyquist-Rate Fast Beam Switching for 5G and Beyond.

Yi Zhang, Minzhe Tang, Jian Pang, Zheng Li, Dongfan Xu, Dingxin Xu, Yuncheng Zhang, Kazuaki Kunihiro, Hiroyuki Sakai, Atsushi Shirane, Kenichi Okada

Proceedings of the IEEE Symposium on VLSI Technology and Circuits 2024, 2024

A 640-Gb/s 4×4-MIMO D-Band CMOS Transceiver Chipset.

Chenxin Liu, Zheng Li, Yudai Yamazaki, Hans Herdian, Chun Wang, Anyi Tian, Jun Sakamaki, Han Nie, Xi Fu, Sena Kato, Wenqian Wang, Hongye Huang, Shinsuke Hara, Akifumi Kasamatsu, Hiroyuki Sakai, Kazuaki Kunihiro, Atsushi Shirane, Kenichi Okada

Proceedings of the IEEE Symposium on VLSI Technology and Circuits 2024, 2024

24.3 A 236-to-266GHz 4-Element Amplifier-Last Phased-Array Transmitter in 65nm CMOS.

Chun Wang, Hans Herdian, Wenbin Zheng, Chenxin Liu, Jill C. Mayeda, Yuxuan Liu, Olivia Angel Yong, Wenqian Wang, Yuncheng Zhang, Carrel da Gomez, Abanob Shehata, Sena Kato, Ibrahim Abdo, Teruo Jyo, Hiroshi Hamada, Hiroyuki Takahashi, Hiroyuki Sakai, Atsushi Shirane, Kenichi Okada

Proceedings of the IEEE International Solid-State Circuits Conference, 2024

A Compact D-Band Phase Shifter with 0.1-degree Phase Resolution and 0.8-degree RMS Phase Error in 65 nm CMOS.

Takaya Uchino, Yudai Yamazaki, Sunghwan Park, Chenxin Liu, Anyi Tian, Abanob Shehata, Hiroyuki Sakai, Kazuaki Kunihiro, Atsushi Shirane, Kenichi Okada

Proceedings of the IEEE Asian Solid-State Circuits Conference, 2024

35-60GHz Switchless IF Bi-Directional Amplifier Using 65nm CMOS for 300GHz-Band Transceivers.

Abanob Shehata, Hans Herdian, Chun Wang, Chenxin Liu, Kazuaki Kunihiro, Hiroyuki Sakai, Atsushi Shirane, Kenichi Okada

Proceedings of the IEEE Asian Solid-State Circuits Conference, 2024

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, Carolyn Jill Mayeda, Yuan Gao, Michihiro Ide, Yuncheng Zhang, Jun Sakamaki, Ashbir Aviat Fadila, Zheng Li, Jumpei Sudo, Makoto Higaki, Soichiro Inoue, Takashi Eishima, Takashi Tomura, Jian Pang, Hiroyuki Sakai, Kenichi Okada, Atsushi Shirane

IEEE J. Solid State Circuits, December, 2023

A Sub-THz Full-Duplex Phased-Array Transceiver with Self-Interference Cancellation and LO Feedthrough Suppression.

Chun Wang, Ibrahim Abdo, Chenxin Liu, Carrel da Gomez, Hans Herdian, Wenqian Wang, Xi Fu, Dongwon You, Abanob Shehata, Sunghwan Park, Yun Wang, Jian Pang, Hiroyuki Sakai, Atsushi Shirane, Kenichi Okada

Proceedings of the 2023 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits), 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, Chun Wang, Yun Wang, Jumpei Sudo, Makoto Higaki, Nahoka Kawaguchi, Masaya Nitta, Soichiro Inoue, Takashi Eishima, Takashi Tomura, Jian Pang, Hiroyuki Sakai, Kenichi Okada, Atsushi Shirane

Proceedings of the IEEE International Solid- State Circuits Conference, 2023

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, Yun Wang, Jumpei Sudo, Makoto Higaki, Soichiro Inoue, Takashi Eishima, Takashi Tomura, Jian Pang, Hiroyuki Sakai, Kenichi Okada, Atsushi Shirane

Proceedings of the IEEE International Solid- State Circuits Conference, 2023

A Dual-Mode Bi-Directional CMOS Mixer Using Push-Push Doubler for 300GHz-Band Transceivers.

Chenxin Liu, Ibrahim Abdo, Chun Wang, Hiroyuki Sakai, Atsushi Shirane, Kenichi Okada

Proceedings of the 49th IEEE European Solid State Circuits Conference, 2023