-
E/H Plane Measurement System for On-Chip Antenna Radiation Patterns at mmWave/Sub-THz Frequencies: Application to a 100 GHz 1×2 Array
Peer-reviewed
Jean Temga, Teru Ishimori, Tomoyuki Furuichi, Mizuki Motoyoshi, Noriharu Suematsu
IEEE Open Journal of Antennas and Propagation 1-1 2026/08
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
DOI：
10.1109/ojap.2026.3725485
eISSN：
2637-6431
-
A W-Band +7dBm Output Power Direct Digital RF Transmitter Using Manchester-Encoded 1-bit BPDSM and Frequency Tripler
Peer-reviewed
Yuki Fujiya, Ryosei Miyagawa, Tomoyuki Furuichi, Satoshi Tsukamoto, Noriharu Suematsu
2026 IEEE MTT-S Radio Frequency Systems and Applications Symposium (IMS RFSA) 2026/06
DOI：
10.1109/IMSRFSA70221.2026.11624320
-
V-band Direct-RF DBF Receiver with RF-Input-Free Sampling-Timing Calibration Method
Peer-reviewed
Yuki Tsukui, Yoshiaki Morino, Kazutomi Mori, Tomoyuki Furuichi, Noriharu Suematsu, Akihito Hirai
2026 IEEE MTT-S Radio Frequency Systems and Applications Symposium (IMS RFSA) 2026/06
DOI：
10.1109/IMSRFSA70221.2026.11624356
-
Multipath Signal Determination Using Stochastic Approach for Power Delay Profile of Local 5G System
Peer-reviewed
Takashi Shiba, Tomoyuki Furuichi, Noriharu Suematsu
2026 IEEE Radio and Wireless Symposium (RWS) 100-103 2026/01/18
Publisher:
IEEE
DOI：
10.1109/rws64705.2026.11408639
-
Simplified Model and Its Evaluation of Wi-Fi Sensor Node Identification Method Using Wi-Fi Backscatter and Self-Mixing Receiver
Peer-reviewed
Yuki Fujiya, Koki Edamatsu, Tomoyuki Furuichi, Takashi Shiba, Noriharu Suematsu
IEEE Transactions on Microwave Theory and Techniques 74 (1) 1110-1120 2026/01
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
DOI：
10.1109/tmtt.2025.3619412
ISSN：
0018-9480
eISSN：
1557-9670
-
Q/V-Band DBF Array Antenna and Direct Digital RF Transceivers for Future LEO Constellation Satellites
Peer-reviewed
Noriharu Suematsu, Tomoyuki Furuichi, Satoshi Tsukamoto, Yoshiaki Morino, Akihito Hirai
2025 Asia-Pacific Microwave Conference (APMC) 1-3 2025/12/02
Publisher:
IEEE
DOI：
10.1109/apmc65046.2025.11379249
-
Measurement Method of High Time-Resolution Power Delay Profile Using In-Band and Out-of-Band Spectrums Under Local 5G System Operation
Peer-reviewed
Takashi Shiba, Tori Inoue, Gustavo Cainelli, Sven Müller, Tomoyuki Furuichi, Nils Kranefeld, Fumiko Ohori, Taketoshi Nakajima, Giuliano Persico, Lisa Underberg, Satoko Itaya, Noriharu Suematsu
2025 Asia-Pacific Microwave Conference (APMC) 1-3 2025/12/02
Publisher:
IEEE
DOI：
10.1109/apmc65046.2025.11378736
-
1.75-43.75 GHz N-Path Harmonic Mixer with Folded Noise Cancellation
Peer-reviewed
Yuki Tsukui, Yoshiaki Morino, Kazutomi Mori, Takuma Torii, Akihito Hirai, Koji Yamanaka, Tomoyuki Furuichi, Noriharu Suematsu
2025 Asia-Pacific Microwave Conference (APMC) 1-3 2025/12/02
Publisher:
IEEE
DOI：
10.1109/apmc65046.2025.11377639
-
A Q-Band -4 dBm Output Power Passive Frequency Tripler Using Stacked APDNP
Peer-reviewed
Ryunosuke Saito, Ryosei Miyagawa, Yuki Fujiya, Tomoyuki Furuichi, Noriharu Suematsu
2025 Asia-Pacific Microwave Conference (APMC) 1-3 2025/12/02
Publisher:
IEEE
DOI：
10.1109/apmc65046.2025.11378761
-
Basic Experiment of Sub-cm Sized 2-GHz Domino-Resonator Wireless Sensor Network for High-Density EEG
Peer-reviewed
Kota Nishi, Tomoyuki Furuichi, Noriharu Suematsu
2025 Asia-Pacific Microwave Conference (APMC) 1-3 2025/12/02
Publisher:
IEEE
DOI：
10.1109/apmc65046.2025.11378726
-
Nonlinear Modeling and Frequency Multiplication Characteristic of Quasi-Vertical Diamond SBD in L-Band
Peer-reviewed
Kosuke Saito, Ryunosuke Saito, Tomoyuki Furuichi, Yuji Kato, Hitoshi Umezawa, Noriharu Suematsu
2025 Asia-Pacific Microwave Conference (APMC) 1-3 2025/12/02
Publisher:
IEEE
DOI：
10.1109/apmc65046.2025.11377606
-
Development of V-Band Direct-Digital RF Rx-Antenna for Digital Beamforming
Peer-reviewed
Yoshiaki Morino, Akihito Hirai, Yuki Tsukui, Kazutomi Mori, Tomoyuki Furuichi, Satoshi Tsukamoto, Noriharu Suematsu, Koji Yamanaka
2025 Asia-Pacific Microwave Conference (APMC) 1-3 2025/12/02
Publisher:
IEEE
DOI：
10.1109/apmc65046.2025.11377718
-
A Fast DBF Array Antenna Calibration by Multi-Frequency Multi-Beam REV Method
Peer-reviewed
Tomoki Nakazawa, Koki Furuuchi, Welday Gerezgiher, Tomoyuki Furuichi, Satoshi Tsukamoto, Noriharu Suematsu
2025 International Symposium on Antennas and Propagation (ISAP) 1-2 2025/10/27
Publisher:
IEEE
DOI：
10.23919/isap63122.2025.11361807
-
A Tile Type V-band 4-Element Circular Polarized Patch Array Antenna with Matching Circuit
Peer-reviewed
Welday Gerezgiher, Koki Furuuchi, Tomoyuki Furuichi, Satoshi Tsukamoto, Noriharu Suematsu
2025 International Symposium on Antennas and Propagation (ISAP) 1-2 2025/10/27
Publisher:
IEEE
DOI：
10.23919/isap63122.2025.11362141
-
A Q-Band -3dBm Output Power Passive Frequency Tripler Using Self-Biased APDNP
Peer-reviewed
Ryunosuke Saito, Ryosei Miyagawa, Yuki Fujiya, Tomoyuki Furuichi, Noriharu Suematsu
2025 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) 73-75 2025/08/25
Publisher:
IEEE
DOI：
10.1109/rfit65667.2025.11364563
-
Multi-path Fading Measurement of 2.4 GHz/5 GHz band with Real-time Wideband Spectrum Monitor
Peer-reviewed
Tomoyuki Furuichi, Eisai Nagahari, Takashi Shiba, Noriharu Suematsu
2025 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) 31-33 2025/08/25
Publisher:
IEEE
DOI：
10.1109/rfit65667.2025.11364622
-
1-bit DAC for Image Enhancement of Q-band Direct Digital RF Transmitter
Peer-reviewed
Yuki Fujiya, Koki Furuuchi, Junhao Zhang, Tomoyuki Furuichi, Satoshi Tsukamoto, Noriharu Suematsu
2025 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) 94-96 2025/08/25
Publisher:
IEEE
DOI：
10.1109/rfit65667.2025.11364588
-
A Compact Brick-Type 40GHz-Band DBF Transmit Antenna Module Using Direct Digital RF Technology
Peer-reviewed
Koki Furuuchi, Ryosei Miyagawa, Yuki Fujiya, Junhao Zhang, Tomoyuki Furuichi, Satoshi Tsukamoto, Noriharu Suematsu
2025 IEEE/MTT-S International Microwave Symposium - IMS 2025 1115-1118 2025/06/15
Publisher:
IEEE
DOI：
10.1109/ims40360.2025.11103924
-
Feasibility Study of WSN System for Wireless EEG Using Sub-cm Sized 2-GHz Domino-Resonator
Peer-reviewed
Fumiaki Wakiya, Tomoyuki Furuichi, Noriharu Suematsu
2025 IEEE MTT-S International Microwave Biomedical Conference (IMBioC) 1-3 2025/04/15
Publisher:
IEEE
DOI：
10.1109/imbioc63524.2025.10989681
-
Design of millimeter-wave waveguide bandpass filter for prototyping with 3D printer
Peer-reviewed
Keiichi Itoh, Yuma Hori, Hideaki Matsuda, Hajime Nozaka, Tomomichi Nishino, Masaki Tanaka, Tomoyuki Furuichi, Noriharu Suematsu
International Journal of Applied Electromagnetics and Mechanics 2025/03/31
Publisher:
SAGE Publications
DOI：
10.1177/13835416251329257
ISSN：
1383-5416
eISSN：
1875-8800
-
Design and Evaluation of a Q-Band 4-Element DBF Antenna as Part of Direct Digital RF Transmitter Antenna Modules for On-Board SATCOM Systems
Peer-reviewed
Welday Gerezgiher, Koki Furuuchi, Tomoyuki Furuichi, Satoshi Tsukamoto, Noriharu Suematsu
2025 19th European Conference on Antennas and Propagation (EuCAP) 1-5 2025/03/30
Publisher:
IEEE
DOI：
10.23919/eucap63536.2025.10999990
-
Q/V-Band Distributed Scalable DBF Antenna with Direct Digital Transceiver for LEO Constellation Satellites
Peer-reviewed
Noriharu Suematsu, Tomoyuki Furuichi, Satoshi Tsukamoto
2025 IEEE Space Hardware and Radio Conference (SHaRC) 5-7 2025/01/19
Publisher:
IEEE
DOI：
10.1109/sharc63955.2025.10908966
-
Effect of Input LSB/USB Signal Imbalance on a 1-bit BPDSM Using Manchester Encoding and Tripler
Peer-reviewed
Yuki Fujiya, Tomoyuki Furuichi, Donald Y. C. Lie, Noriharu Suematsu
IEEE Access 13 212794-212805 2025
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
DOI：
10.1109/access.2025.3645067
eISSN：
2169-3536
-
Regeneration of RF Spectrum Using Direct RF Undersampling Method and Its Application for Channel Model Measurement
Invited
Peer-reviewed
SHIBA Takashi, FURUICHI Tomoyuki, AKIMOTO Kohei, MOTOYOSHI Mizuki, KAMEDA Suguru, CAINELLI Gustavo Pedroso, Müller Sven, GAMBAL Bodo, KRANEFELD Nils, OHORI Fumiko, OSUGA Toru, PERSICO Giuliano, UNDERBERG Lisa, ITAYA Satoko, SUEMATSU Noriharu
J108-C (1) 3-12 2025/01/01
DOI：
10.14923/transelej.2024mwi0001
eISSN：
1881-0217
-
Radiation Characteristics of 2.4GHz-Band Wi-Fi LCX Antenna with Varying Cable Rotation Angle and Distance from Metal Wall
Peer-reviewed
Eisai Nagahari, Tomoyuki Furuichi, Takashi Shiba, Noriharu Suematsu
2024 IEEE Asia-Pacific Microwave Conference (APMC) 704-706 2024/11/17
Publisher:
IEEE
DOI：
10.1109/apmc60911.2024.10867802
-
A Millimeter-Wave Undersampling Receiver with Timing Control in 45 nm CMOS-SOI
Peer-reviewed
Yoshiaki Morino, Yuki Tsukui, Takuma Torii, Kazutomi Mori, Tomoyuki Furuichi, Noriharu Suematsu, Akihito Hirai, Koji Yamanaka
2024 IEEE Asia-Pacific Microwave Conference (APMC) 241-243 2024/11/17
Publisher:
IEEE
DOI：
10.1109/apmc60911.2024.10867622
-
Sub-cm-size 2-GHz Domino-Resonator Wireless Transmission
Peer-reviewed
Fumiaki Wakiya, Tomoyuki Furuichi, Noriharu Suematsu
2024 IEEE Asia-Pacific Microwave Conference (APMC) 584-586 2024/11/17
Publisher:
IEEE
DOI：
10.1109/apmc60911.2024.10867797
-
High-Temperature Operation and RF Characteristics Measurement of H-Terminated Diamond FET
Peer-reviewed
Tomoyuki Furuichi, Fumito Karasawa, Hiroyuki Kawashima, Tomoko Wakai, Tadashi Masumura, Takahiro Yamaguchi, Junichi H. Kaneko, Hitoshi Umezawa, Noriharu Suematsu
2024 IEEE Asia-Pacific Microwave Conference (APMC) 865-867 2024/11/17
Publisher:
IEEE
DOI：
10.1109/apmc60911.2024.10867640
-
30–50 GRz S/H Mixer with LO Duty Cycle Control in 22 nm FD-SOI CMOS
Peer-reviewed
Akihito Hirai, Yuki Tsukui, Takuma Torii, Kazutomi Mori, Tomoyuki Furuichi, Noriharu Suematsu, Yoshiaki Morino, Koji Yamanaka
2024 IEEE Asia-Pacific Microwave Conference (APMC) 73-75 2024/11/17
Publisher:
IEEE
DOI：
10.1109/apmc60911.2024.10867491
-
40GHz-Band Low-Backlobe Low-Mutual-Coupling Vivaldi Antenna Array Using Double-Slits for Antenna Integrated Module
Peer-reviewed
Koki Furuuchi, Junhao Zhang, Tomoyuki Furuichi, Noriharu Suematsu
2024 IEEE Asia-Pacific Microwave Conference (APMC) 292-294 2024/11/17
Publisher:
IEEE
DOI：
10.1109/apmc60911.2024.10867649
-
Improvement in EVM by Cryogenically Cooled Technique for Millimeter Wave Band Receiving Amplifiers
Peer-reviewed
Yasunori Suzuki, Tomoyuki Furuichi, Noriharu Suematsu
2024 IEEE 29th Asia Pacific Conference on Communications (APCC) 499-502 2024/11/05
Publisher:
IEEE
DOI：
10.1109/apcc62576.2024.10767932
-
Proposal of Channel Model Measurement Method Under Local 5G System Operation
Peer-reviewed
Takashi Shiba, Tomoyuki Furuichi, Gustavo Cainelli, Sven Müller, Bodo Gambal, Nils Kranefeld, Fumiko Ohori, Toru Osuga, Giuliano Persico, Lisa Underberg, Satoko Itaya, Noriharu Suematsu
2024 IEEE VTS Asia Pacific Wireless Communications Symposium (APWCS) 1-5 2024/08/21
Publisher:
IEEE
DOI：
10.1109/apwcs61586.2024.10679287
-
130 GHz Band CMOS Amplifier with Miniaturized Interstage Circuit by Stacked Radial Stubs
Peer-reviewed
F. Karasawa, T. Machii, M. Motoyoshi, T. Furuichi, N. Suematsu
2023 Asia-Pacific Microwave Conference (APMC) 769-771 2023/12/01
Publisher:
IEEE
DOI：
10.1109/APMC57107.2023.10439779
-
Millimeter-Wave Band Coverage Extension by Reducing Noise Figure at Cryogenic Temperatures
Peer-reviewed
Yasunori Suzuki, Tomoyuki Furuichi, Noriharu Suematsu
2023 28th Asia Pacific Conference on Communications (APCC) 315-317 2023/11/19
Publisher:
IEEE
DOI：
10.1109/apcc60132.2023.10460677
-
Design of Millimeter Wave Waveguide Bandpass Filter for Prototyping with 3D Printer
Peer-reviewed
Keiichi ITOH, Yuma HORI, Hideaki MATSUDA, Hajime NOZAKA, Tomomichi NISHINO, Masaki TANAKA, Tomoyuki FURUICHI, Noriharu SUEMATSU
21st International Symposium on Applied Electromagnetics and Mechanics (ISEM2023) 2023/11
-
1-D and 2-D Beam Steering Arrays Antennas Fed by a Compact Beamforming Network for Millimeter-Wave Communication
Peer-reviewed
J. Temga, K. Edamatsu, T. Furuichi, M. Motoyoshi, T. Shiba, N. Suematsu
IEICE Transactions on Communications E106-B (10) 915-927 2023/10/01
Publisher:
IEICE
DOI：
10.1587/transcom.2022EBP3113
-
Power Delay Profile Measurement Applied MUSIC for Local 5G System
Peer-reviewed
Takashi Shiba, Tomoyuki Furuichi, Noriharu Suematsu
2023 6th World Symposium on Communication Engineering (WSCE) 49-55 2023/09/27
Publisher:
IEEE
DOI：
10.1109/wsce59557.2023.10365776
-
A 2-D Beam Scanning Array Antenna Fed by a Compact 16-Way 2-D Beamforming Network in Broadside Coupled Stripline
Peer-reviewed
Jean TEMGA, Tomoyuki FURUICHI, Takashi SHIBA, Noriharu SUEMATSU
IEICE Transactions on Communications E106.B (9) 768-777 2023/09/01
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
DOI：
10.1587/transcom.2022fgp0003
ISSN：
0916-8516
eISSN：
1745-1345
-
A study on shadowing caused by a metallic object placed near LCX antenna of 920MHz-band RFID system
Peer-reviewed
Eisai Nagahari, Tomoyuki Furuichi, Takashi Shiba, Noriharu Suematsu
2023 XXXVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS) 1-3 2023/08/19
Publisher:
IEEE
DOI：
10.23919/ursigass57860.2023.10265547
-
Measurement of Power Delay Profile for Local 5G System
Peer-reviewed
Takashi Shiba, Tomoyuki Furuichi, Noriharu Suematsu
2023 XXXVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS) 1-4 2023/08/19
Publisher:
IEEE
DOI：
10.23919/ursigass57860.2023.10265413
-
Noise Figure Measurement of 60 GHz Band Amplifiers at Cryogenic Temperatures
Peer-reviewed
Yasunori Suzuki, Hiroshi Okazaki, Mizuki Motoyoshi, Tomoyuki Furuichi, Norhiharu Suematsu
2023 XXXVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS) 1-4 2023/08/19
Publisher:
IEEE
DOI：
10.23919/ursigass57860.2023.10265375
-
A 5 GHz-Band 2×2 Reflection-Type Retrodirective Array with Stacked Stripline Phase Conjugate Circuit
Peer-reviewed
Yusaku Honma, Jean Temga, Tomoyuki Furuichi, Takashi Shiba, Noriharu Suematsu
2022 Asia-Pacific Microwave Conference (APMC) 151-153 2022/11/29
Publisher:
IEEE
DOI：
10.23919/apmc55665.2022.9999813
-
Real-Time Wideband Spectrum Monitor Using Multiple Sampling Frequency Direct RF Undersampling for Wireless IoT
Peer-reviewed
T. Shiba, T. Furuichi, K. Akimoto, M. Motoyoshi, S. Kameda, N. Suematsu
2021 51st European Microwave Conference (EuMC) 725-728 2022/04
Publisher:
IEEE
DOI：
10.23919/EuMC50147.2022.9784290
-
A Simple Spectrum Reconstruction Method in Direct RF Undersampling Receiver for Real-Time Spectrum Monitor
Peer-reviewed
古市朋之, 古市朋之, 秋元浩平, 秋元浩平, 本良瑞樹, 本良瑞樹, 亀田卓, 亀田卓, 芝隆司, 末松憲治
電子情報通信学会論文誌 C(Web) J105-C (4) 117-126 2022/04
ISSN：
1881-0217
-
RF Signal Frequency Identification in a Direct RF Undersampling Multi-Band Real-Time Spectrum Monitor for Wireless IoT Usage
Peer-reviewed
Tomoyuki FURUICHI, Mizuki MOTOYOSHI, Suguru KAMEDA, Takashi SHIBA, Noriharu SUEMATSU
IEICE Transactions on Communications E105.B (4) 461-471 2022/04/01
Publisher:
Institute of Electronics, Information and Communications Engineers (IEICE)
DOI：
10.1587/transcom.2021wwp0011
ISSN：
0916-8516
eISSN：
1745-1345
-
A 60 GHz-band S/H CMOS IC for Direct RF Undersampling Receiver
Peer-reviewed
Tomoyuki Furuichi, Nagahiro Yoshino, Mizuki Motoyoshi, Suguru Kameda, Noriharu Suematsu
2022 IEEE Radio and Wireless Symposium (RWS) 128-130 2022/01/16
Publisher:
IEEE
DOI：
10.1109/rws53089.2022.9719927
-
Full-Range Three-Stage 16GSa/s Riemann Pump RF-Power DAC in GaN HEMT
Peer-reviewed
Tomoyuki Furuichi, Rui Ma, Toshiaki Koike-Akino, Yuji Komatsuzaki
2021 IEEE Asia-Pacific Microwave Conference (APMC) 290-292 2021/11/28
Publisher:
IEEE
DOI：
10.1109/apmc52720.2021.9661641
-
A Spectrum Regeneration and Demodulation Method for Multiple Direct Undersampled Real Signals
Takashi SHIBA, Tomoyuki FURUICHI, Mizuki MOTOYOSHI, Suguru KAMEDA, Noriharu SUEMATSU
IEICE Transactions on Communications E104.B (10) 1260-1267 2021/10/01
Publisher:
Institute of Electronics, Information and Communications Engineers (IEICE)
DOI：
10.1587/transcom.2020dsp0006
ISSN：
0916-8516
eISSN：
1745-1345
-
A Filter Design Method of Direct RF Undersampling On-Board Receiver for Ka-Band HTS
Peer-reviewed
Tomoyuki FURUICHI, Yang GUI, Mizuki MOTOYOSHI, Suguru KAMEDA, Takashi SHIBA, Noriharu SUEMATSU
IEICE Transactions on Communications E103.B (10) 1078-1085 2020/10/01
Publisher:
Institute of Electronics, Information and Communications Engineers (IEICE)
DOI：
10.1587/transcom.2019cbp0008
ISSN：
0916-8516
eISSN：
1745-1345
-
28 GHz band direct RF undersampling broadband receiver for Ka-band HTS on-board unit
Peer-reviewed
Tomoyuki Furuichi, Yang Gui, Mizuki Motoyoshi, Suguru Kameda, Noriharu Suematsu
GSMM 2019 - 12th Global Symposium on Millimeter Waves, Proceeding 56-58 2019/05
DOI：
10.1109/GSMM.2019.8797664
-
A study on direct RF undersampling receiver configuration considering timing skew spurs using time-interleaved ADC
Peer-reviewed
Tomoyuki Furuichi, Mizuki Motoyoshi, Suguru Kameda, Noriharu Suematsu
Asia-Pacific Microwave Conference Proceedings, APMC 2018-November 1525-1527 2019/01/16
DOI：
10.23919/APMC.2018.8617355
