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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| AP (2nd) |
2024-01-08 - 2024-01-10 |
Overseas | EPU, Hanoi | Microstrip antenna unit for beam steering antennas using dielectric constant control with liquid crystals Hiroki Nakamura, Keizo Cho (CIT), Takuya Okura, Hiroyuki Tsuji (NICT) |
This manuscript discusses the results of investigating the structural elements for a beam steering antenna utilizing nem... [more] | |
| AP (2nd) |
2024-01-08 - 2024-01-10 |
Overseas | EPU, Hanoi | Transmit array elements that tilt beam through glass using Huygens' metamaterials. Kenta Fujii, Keizo Cho (CIT), Naobumi Michishita (NDA), Hiroaki Nakabayashi (CIT), Takayoshi Sasaki, Warangkana Chaihongsa, Keisuke Sato, Ichiro Oshima (DKK) |
In this paper, we discuss the design of a transmit array capable of transmitting 28 GHz band radio waves through glass w... [more] | |
| AP, RCS (Joint) |
2023-11-17 13:00 |
Kumamoto | Kumamoto Prefectural Workers' Welfare Hall (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Relationship between size and reflected power of metal flat reflectors for indoor communications in the 300 GHz band Makoto Ohashi, Keizo Cho, Akihiko Hirata (CIT)  AP2023-150 RCS2023-173 |
Large-capacity and ultrahigh-speed communications using millimeter wave and terahertz wave bands are attracting attentio... [more] | AP2023-150 RCS2023-173 pp.104-109(AP), pp.107-112(RCS) |
| MW, AP (Joint) |
2023-09-29 09:40 |
Kochi | Kochi Castle Museum of History (Primary: On-site, Secondary: Online) |
Measurement of Reflection Characteristics of 300 GHz Sub-THz Wave Considering Polarization in Indoor Environment Keizo Cho, Makoto Ohashi, Yuma Tanaka, Akihiko Hirata (Chiba Inst. of Tech) AP2023-82 |
[more] | AP2023-82 pp.22-26 |
| AP | 2023-06-15 15:20 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
Interference Area Evaluation of Millimeter Wave Communication Systems for Flight Vehicles Daisuke Nakayama, Keizo Cho (CIT) AP2023-28 |
With the recent development of delivery drones and flight vehicles, high-speed and large-capacity communication systems ... [more] | AP2023-28 pp.21-26 |
| AP | 2023-05-12 13:35 |
Okinawa | Okinawa Gender Equality Center (Primary: On-site, Secondary: Online) |
Influence of Frequency and Threshold on Position Estimation Accuracy Estimated by THz-TDS Synthetic Aperture Array Using Multiple Frequencies Keisuke Kobayashi, Keizo Cho, Hiroaki Nakabayashi, Koji Suizu (Chiba Inst. of Tech.) AP2023-19 |
[more] | AP2023-19 pp.59-64 |
| AP | 2023-02-16 14:15 |
Miyagi | Tohoku University, Aobayama Campus (Primary: On-site, Secondary: Online) |
[Invited Lecture]
A Compact Beam Forming Antenna based on Phase Gradient Huygen's Transmitarray and Fabry-Perot Antenna Source Takayoshi Sasaki, Tanan Hongnara, Yoshiki Shirasawa, Warangkana Chaihongsa, Katsumori Sasaki, Keisuke Sato, Ichiro Ohshima (DKK), Keizo Cho, Hiroaki Nakabayashi (CIT), Naobumi Michishita (NDA) AP2022-217 |
In this report, we propose a compact and low profile antenna with controllable directivity by combining a Fabry-Perot re... [more] | AP2022-217 pp.111-115 |
| AP | 2022-08-19 11:20 |
Tochigi | Tochigi Prefecture Industrial Center (Primary: On-site, Secondary: Online) |
Dual-Polarized Bipartite Huygens' Metasurface with Anomalous Wave Reflection for Local 5G Application at 28.25 GHz Tanan Hongnara, Takayoshi Sasaki, Yoshiki Shirasawa, Katsumori Sasaki, Keisuke Sato, Ichiro Oshima (DKK), Naobumi Michishita (NDA), Hiroaki Nakabayashi, Keizo Cho (CIT) AP2022-66 |
This paper presents a design of dual-polarized bipartite Huygens’s metasurface (HMTS) for Local 5G application at 28.25 ... [more] | AP2022-66 pp.11-16 |
| AP, SANE, SAT (Joint) |
2022-07-27 15:30 |
Hokkaido | Asahikawa Taisetsu Crystal Hall (Primary: On-site, Secondary: Online) |
Time Reversal Algorithm Position Estimation of Cylindrical Target/s Using Direct Path and Multipath Cross-correlation Hanns Christian Jaurigue Chua, Keizo Cho, Hiroaki Nakabayashi, Koji Suizu (Chiba Inst. of Tech) AP2022-43 |
This research proposes the usage of the time-reversal algorithm to estimate one and two passive thin cylindrical targets... [more] | AP2022-43 pp.50-55 |
| AP, SANE, SAT (Joint) |
2022-07-29 12:40 |
Hokkaido | Asahikawa Taisetsu Crystal Hall (Primary: On-site, Secondary: Online) |
A Study of equivalent circuit parameters of Huygens' metasurface lense capable of changing transmission phase with low loss Maria Ishida, Keizo Cho (Chiba Inst of Tech), Naobumi Michishita (National Defense Academy), Tanan Hongnara, Takayoshi sasaki, Warangkana Chaihongsa, Keisuke Sato, Ichiro Oshima (DKK), Hiroaki Nakabayashi (Chiba Inst of Tech) AP2022-58 |
Huygens metasurfaces have attracted attention as a method of constructing thin lenses. In this report, we present the re... [more] | AP2022-58 pp.135-139 |
| AP, WPT (Joint) |
2022-01-20 09:00 |
Tottori | Kenmin-Fureai-Kaikan (Primary: On-site, Secondary: Online) |
A Study on Observation of Inside Material with Transparency Characteristics by Using THz-POLSAR Riku Fujiwara, Hiroaki Nakabayashi, Koji Suizu, Keizo Cho (CIT) AP2021-134 |
Terahertz waves, which lie between radio waves and light, are expected to be applied to the field of sensing by taking a... [more] | AP2021-134 pp.1-6 |
| AP, RCS (Joint) |
2021-11-11 09:55 |
Nagasaki | NBC-Bekkan (Nagasaki) (Primary: On-site, Secondary: Online) |
Prototype Evaluation of Frequency Dispersive Phase Shifter for Dual Band Base Station Antenna Toshiki Soma, Keizo Cho (Chiba Inst. Tech.), Naobumi Michishita (National Defense Academy), Takayoshi Sasaki, Keisuke Sato, Ichiro Oshima (DKK), Hiroaki Nakabayashi (Chiba Inst. Tech.) AP2021-110 |
Multi-band base station antennas have the problem that interference to adjacent areas increases in the low frequency ban... [more] | AP2021-110 pp.56-60 |
| MW, AP (Joint) |
2021-09-09 14:00 |
Online | Online | Matching Circuit Design of Frequency Dispersive Phase Shifter for Dual Band Base Station Antenna Toshiki Soma, Keizo Cho (Chiba Inst. Tech.), Naobumi Michishita (National Defense Academy), Takayoshi Sasaki, Keisuke Sato, Ichiro Oshima (DKK), Hiroaki Nakabayashi (Chiba Inst. Tech.) AP2021-56 |
In a base station antenna that shares multiple frequency bands, The direction of radiation is the same in the shared fre... [more] | AP2021-56 pp.1-5 |
| AP | 2021-04-16 13:00 |
Hyogo | Kinosaki International Arts Center (Primary: On-site, Secondary: Online) |
Position Estimation of Point Source Targets Using Compressed Sensing in THz Imaging Rio Yanagi, Keizo Cho, Hiroaki Nakabayashi, Koji Suizu (CIT) AP2021-4 |
In terahertz (THz) imaging, synthetic aperture array is attractive for reducing measurement time and increasing spatial ... [more] | AP2021-4 pp.17-22 |
| AP | 2020-05-21 11:25 |
Okinawa | Tiruru Okinawa (Naha-city) (Cancelled, technical report was not issued) |
An arrangemant of small solenoid antenna improving transmission efficiency for near field communication Yuya Kira, Yoshihiro Nakamura, Keizo Cho (Chiba Inst.of Tech.) |
[more] | |
| AP, RCS (Joint) |
2019-11-21 11:20 |
Saga | Saga Univ. | Equivalent circuit parameters reducing beam squint of left-handed leaky wave antenna Kazuki Terada, Keizo Cho, Hiroaki Nakabayashi (CIT), Naobumi Michishita (NDA), Ichiro Oshima (DKK) AP2019-122 |
A rod-like leaky wave antenna composed of CRLH transmission lines has been proposed as a base station antenna for small ... [more] | AP2019-122 pp.91-94 |
| AP, RCS (Joint) |
2019-11-21 15:15 |
Saga | Saga Univ. | [Invited Lecture]
Results of applying spatial average MUSIC using multiple virtual arrays to THz-TDS measurement Kazuki Watakabe, Keizo Cho, Hiroaki Nakabayashi, Koji Suizu (CIT) AP2019-126 RCS2019-223 |
In synthetic aperture terahertz time-domain spectroscopy (THz-TDS) imaging, the correlation of the waves reflected from ... [more] | AP2019-126 RCS2019-223 pp.107-112(AP), pp.115-120(RCS) |
| AP, RCS (Joint) |
2019-11-22 10:55 |
Saga | Saga Univ. | [Tutorial Lecture]
Application of Meta-material to Base Station Antennas for Mobile Communication Systems Keizo Cho (Chiba Inst. Tech), Naobumi Michishita (National Defense Academy), Ichiro Oshima (DKK) AP2019-133 RCS2019-228 |
[more] | AP2019-133 RCS2019-228 pp.145-150(AP), pp.139-144(RCS) |
| AP (2nd) |
Overseas | Hotel Istana, Kuala Lumpur | Influence of the location of virtual linear array on position estimation using MUSIC algorithm applied to arc array synthetic aperture radar imaging Kazuki Watakabe, Keizo Cho, Hiroaki Nakabayashi (Chiba Institute of Technology Univ.) |
In synthetic aperture terahertz time domain spectroscopy (THz-TDS) imaging, the image of closely spaced targets is degra... [more] | ||
| AP (2nd) |
Overseas | Hotel Istana, Kuala Lumpur | Phase Variation Analysis of Leaky Wave Antenna Composed of CRLH Transmission Line Using Equivalent Circuit Kazuki Terada, Keizo Cho, Hiroaki Nakabayashi (CIT), Naobumi Michishita (NDA), Takayoshi Sasaki, Keisuke Sato, Ichiro Oshima (DKK) |
A leaky wave antenna configured by CRLH transmission lines has been proposed. There is a problem that the direction of t... [more] | ||
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