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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| AP, WPT (Joint) |
2025-01-24 09:45 |
Shimane | Rokan, Matsue (Primary: On-site, Secondary: Online) |
Design of a Single-Layer Corporate-Feed Waveguide 64x64-Slot Array Antenna Atsushi Saito, Jiro Hirokawa, Takashi Tomura (Science Tokyo) |
[more] | |
| AP, WPT (Joint) |
2025-01-24 10:10 |
Shimane | Rokan, Matsue (Primary: On-site, Secondary: Online) |
Configuration and Design of 4-beam Switch Matrix Using Couplers With Smaller Coupling Ratio Boyu Zhang, Shengjia Wu, Jiro Hirokawa, Takashi Tomura (Science Tokyo), Nelson J. G. Fonseca (Anywaves) |
[more] | |
| EMT, IEE-EMT | 2024-11-27 13:40 |
Shizuoka | Shizuoka Convestion & Arts Center | [Invited Lecture]
Numerical design of one-dimensional switching matrix with arbitrary number of beams and element operation for two-dimensional switching matrix Jiro Hirokawa (Institute of Science Tokyo)  EMT2024-73 |
his manuscript describes numerical design of one-dimensional switching matrix with arbitrary number of beams and element... [more] | EMT2024-73 pp.77-80 |
| RCS, AP (Joint) |
2024-11-13 10:20 |
Ishikawa | (Primary: On-site, Secondary: Online) |
Vertically polarized omnidirectional reflector antenna fed by a circular waveguide bent TM01 mode converter for the 150 GHz band Jiro Hirokawa, Riki Yanagisawa, Takashi Tomura (Science Tokyo), Issei Watanabe (NICT) AP2024-137 |
A vertically polarized horizontal-plane omnidirectional antenna with a circular waveguide bent TM01 mode converter and a... [more] | AP2024-137 pp.13-18 |
| RCS, AP (Joint) |
2024-11-15 13:40 |
Ishikawa | (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Study on Wavelet-OFDM Wireless Communication System for Underwater Vehicle Using Loop Antennas Ryosuke Hasaba (Panasonic Industry), Kazuhiro Eguchi (KIT), Toshiyuki Wakisaka (Panasonic Holdings), Jiro Hirokawa (Science Tokyo), Miyuki Hirose (KIT), Tohlu Matsushima, Yukihiro Fukumoto, Yuya Nishida, Kazuo Ishii (Kyushu Institute of Technology) AP2024-154 RCS2024-170 |
[more] | AP2024-154 RCS2024-170 p.105(AP), p.98(RCS) |
| AP | 2024-10-18 10:20 |
Fukuoka | ACROS Fukuoka (Primary: On-site, Secondary: Online) |
Study on beam-steering matching elements for 8x1-element waveguide aperture array antennas in 120-GHz Riku Maeda, Takashi Tomura, Jiro Hirokawa (Science Tokyo), Daisuke Yamanaka, Nobutaka Kidera, Osamu Kagaya (AGC) AP2024-128 |
[more] | AP2024-128 pp.212-215 |
| AP, MW (Joint) |
2024-09-19 14:00 |
Kagawa | Takamatsu Chamber of commerce (Primary: On-site, Secondary: Online) |
Optimal Output Phase Difference Assignment in One-Dimensional Parallel Switching Matrix with Five Beams Shengjia Wu, Jiro Hirokawa, Takashi Tomura (Tokyo Tech.), Nelson J. G. Fonseca (Anywaves) AP2024-49 |
General configuration of one-dimensional switching matrices with an arbitrary number of beams has been studied. The gene... [more] | AP2024-49 pp.1-4 |
| AP, SANE, SAT (Joint) |
2024-07-24 10:40 |
Hokkaido | Frontier Research in Applied Sciences Building, Hokkaido University (Primary: On-site, Secondary: Online) |
Waveguide 3x2-slot subarray antenna for millimeter-wave car radar Ryosuke Sakurai, Jiro Hirokawa, Takashi Tomura (Tokyo Tech) AP2024-23 |
We designed a 2x2-slot subarray antenna which consists of hollow waveguide for millimeter-wave car radar in the 76 GHz b... [more] | AP2024-23 pp.11-14 |
| AP, SANE, SAT (Joint) |
2024-07-24 11:00 |
Hokkaido | Frontier Research in Applied Sciences Building, Hokkaido University (Primary: On-site, Secondary: Online) |
Post-Wall Waveguide Series-Fed Slot Subarray for Millimeter-Wave Radar Hayato Sato, Jiro Hirokawa, Takashi Tomura (Tokyo Tech) AP2024-24 |
We design a post-wall waveguide slot subarray for 76.5 GHz band with a structure of 25 radiating elements that can suppr... [more] | AP2024-24 pp.15-18 |
| SAT, SANE (Joint) |
2024-02-08 12:50 |
Kagoshima | AmaHome PLAZA (Amami City Shimin Koryu Center) (Primary: On-site, Secondary: Online) |
Scattered Field Transformation with Planar Scan Applicable for Differences in Radar Ranges of Transmitter and Receiver Yoshihiko Akamine, Takashi Tomura, Jiro Hirokawa (Tokyo Tech) SANE2023-104 |
This paper proposes a new scattered field transformation method with a two-dimensional planar scan. The new method is ba... [more] | SANE2023-104 pp.1-6 |
| CQ, CBE (Joint) |
2024-01-26 15:05 |
Kumamoto | Kurokawa-Onsen (Primary: On-site, Secondary: Online) |
A Study of Handover Methods Considering Multipath Interference in a Mixed Network of Heterogeneous Base Stations Kakeru Hirata (NIT), Satoshi Ujigawa (KazimaTec), Takahiro Matsuda (TMU), Jiro Hirokawa (TT), Tetsurou Imai (TDU), Takefumi Hiraguri (NIT) CQ2023-69 |
[more] | CQ2023-69 pp.94-99 |
| AP, RCS (Joint) |
2023-11-15 10:00 |
Kumamoto | Kumamoto Prefectural Workers' Welfare Hall (Primary: On-site, Secondary: Online) |
Design of a hollow waveguide slotted array antenna fed by an E-plane horn for a channel sounder Rikako Yamaguchi, Jiro Hirokawa, Takashi Tomura (Tokyo Tech), Minoru inomata, Wataru Yamada (NTT) AP2023-129 |
We design an E-plane horn-fed hollow waveguide slot array antenna for a channel sounder in the 150 GHz band. Since we re... [more] | AP2023-129 pp.1-6 |
| AP, RCS (Joint) |
2023-11-15 14:30 |
Kumamoto | Kumamoto Prefectural Workers' Welfare Hall (Primary: On-site, Secondary: Online) |
Design of E-plane cross directional coupler for changing radiation directions of substrate-laminated two-dimensional beam switching matrix Yoshiki Mitsumoto, Takashi Tomura, Jiro Hirokawa (Tokyo Tech), Daisuke Yamanaka, Nobutaka Kidera, Osamu Kagaya (AGC Inc) AP2023-136 |
[more] | AP2023-136 pp.37-40 |
| SANE | 2023-11-13 13:55 |
Chiba | Chiba Univ. (Nishi-Chiba Campus) (Primary: On-site, Secondary: Online) |
Scattered Field Transformation with Spherical Scan Applicable for Differences in the Radar Ranges of Transmitter and Receiver Yoshihiko Akamine, Takashi Tomura, Jiro Hirokawa (Tokyo Tech) SANE2023-47 |
This paper proposes a new scattered field transformation method with a two-dimensional spherical scan. The new method is... [more] | SANE2023-47 pp.1-6 |
| MIKA (3rd) |
2023-10-10 15:35 |
Okinawa | Okinawa Jichikaikan (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Study of drone handover method considering multipath interference outdoors Kakeru Hirata (NIT), Satoshi Ujigawa (KazimaTec), Takahiro Matsuda (TMU), Jiro Hirokawa (TT), Tetsurou Imai (TDU), Takefumi Hiraguri (NIT) |
[more] | |
| CQ, MIKA (Joint) (2nd) |
2023-08-30 15:00 |
Fukushima | Tenjin-Misaki Sports Park | [Poster Presentation]
Study of drone handover method suitable for multi path phasing in three dimensional environment Kakeru Hirata (NIT), Satoshi Ujigawa (Kajima Corporation), Takahiro Matsuda (TMU), Jiro Hirokawa (TT), Tetsurou Imai (TDU), Takefumi Hiraguri (NIT) |
[more] | |
| CQ, MIKA (Joint) (2nd) |
2023-08-30 16:20 |
Fukushima | Tenjin-Misaki Sports Park | [Poster Presentation]
Examination of a Powerless Element Antenna with Switching Circuit Chikayo Hata, Takehumi Hiraguri (Nit), Takahiro Matsuda (Tokyo Metropolitan Univ.), Tetsuro Imai (Tokyo Denki Cniv.), Jiro Hirokawa (TIT) |
[more] | |
| CS | 2023-07-27 11:24 |
Tokyo | Hachijo-machi Chamber of Commerce and Industry | Study on drone handover methods suitable for multipath interference due to obstacles Kakeru Hirata (NIT), Satisi Uzigawa (Kajima Corporation), Takahiro Matsuda (TMU), Jiro Hirokawa (TT), Tetsurou Imai (TDU), Takefumi Hiraguri (NIT) CS2023-36 |
[more] | CS2023-36 pp.64-69 |
| AP, SANE, SAT (Joint) |
2023-07-12 11:20 |
Hokkaido | The Citizen Activity Center (Primary: On-site, Secondary: Online) |
[Invited Lecture]
System Configuration of Sub-Terahertz MassiveMIMO Channel Sounder for 6G Minoru Inomata, Wataru Yamada, Nobuaki Kuno (NTT), Jiro Hirokawa, Takashi Tomura (Tokyo Institute of Technology) AP2023-31 |
[more] | AP2023-31 pp.7-11 |
| AP | 2023-06-15 13:55 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
Recent Progress of One and Two-dimensional Orthogonal Switching Matrices with an Arbitrary Number of Beams Jiro Hirokawa, Qi Li, Shengjia Wu, Takashi Tomura (Tokyo Tech), Nelson J. G. Fonseca (ESA) AP2023-25 |
This manuscript describes recent progress in 1D and 2D orthogonal switching matrices with an arbitrary number of beams. ... [more] | AP2023-25 pp.7-10 |
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