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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 43  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
AP, WPT
(Joint)
2024-01-17
13:00
Niigata Tokimate, Niigata University
(Primary: On-site, Secondary: Online)
[Invited Lecture] Basic Study of Time-Spatial Propagation Path near Human Body in 300 GHz Band Using Map-Based Hybrid Channel Model
Koya Imaseki, Hiroaki Nakabayashi (Chiba Inst. of Tech) AP2023-160
In Beyond 5G, radio over terahertz technology is expected to be applied to relay millimeter-wave communications in terah... [more] AP2023-160
pp.1-6
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 2023-10-19
13:00
Iwate Iwate University
(Primary: On-site, Secondary: Online)
[Poster Presentation] A Study on Received Level Estimation by Stochastic Spatial Interpolation
Shun Inaba, Fumiya Yatsumonji, Yusaku Masuda, Hiroaki Nakabayashi (Chiba Inst. of Tech) AP2023-110
In wireless communications, the received level has a large effect on the speed and quality of communications. Furthermor... [more] AP2023-110
pp.81-82
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 2023-03-16
14:10
Toyama Toyama Prefectural Civic Hall
(Primary: On-site, Secondary: Online)
A Study of Multipath Angular Characteristics near Human Body in 300 GHz Band
Koya Imaseki, Yuito Usui, Hiroaki Nakabayashi, Akihiko Hirata (Chiba Inst. of Tech.) AP2022-237
In recent years, the application of radio over terahertz technology, which relays millimeter-wave communications in a te... [more] AP2022-237
pp.19-24
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 2022-10-20
13:10
Gifu GIFU CITY CULTURE CENTER
(Primary: On-site, Secondary: Online)
Basic Study for Time-Spatial Propagation Modeling near Human Body in 300 GHz Band
Hiroaki Nakabayashi, Koya Imaseki, Yuito Usui (Chiba Inst. of Tech) AP2022-139
In Beyond 5G, application of radio over terahertz technology, which relays millimeter wave communications in the teraher... [more] AP2022-139
pp.199-204
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, WPT
(Joint)
2022-01-20
14:20
Tottori Kenmin-Fureai-Kaikan
(Primary: On-site, Secondary: Online)
[Invited Lecture] A Study of Error Mitigation Methods Using Stochastic Space Characteristics in Radio Wave Propagation Simulation
Tomoharu Nakamura, Hiroaki Nakabayashi (CIT) AP2021-144
Radio propagation simulations are divided into site-general and site-specific methods, and are widely used in the constr... [more] AP2021-144
pp.53-58
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, SANE, SAT
(Joint)
2021-07-28
10:15
Online Online [Invited Lecture] A Study on Stochastic Characteristics of Short Term Variation in Low Base Station Antenna Height.
Kazuki Machida, Hiroaki Nakabayashi (CIT) AP2021-26
A study was conducted to clarify the stochastic characteristics of received level short term variations in low base stat... [more] AP2021-26
pp.13-18
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, WPT
(Joint)
2020-01-24
16:35
Kagawa Sunport Hall Takamatsu A study on Element Arrangement Optimization of Spatial Polarized Massive MIMO and the Effectiveness
Takahiro Matsumoto, Kiyoaki Itoi, Hiroaki Nakabayashi (CIT) AP2019-179
Currently, various studies of 5G have been studied for introduction in 2020. In 5G, massive MIMO technology has been stu... [more] AP2019-179
pp.159-164
AP, WPT
(Joint)
2020-01-24
17:00
Kagawa Sunport Hall Takamatsu A Study on Mean Antenna Gain of Massive MIMO in Line-of-Sight Street Canyon Environment
Yuya Tashiro, Eita Utsuki, Kazuki Machida, Hiroaki Nakabayashi (Chiba Inst. of Tech.) AP2019-180
In 5th generation mobile communication systems, massive MIMO has been studied as one of the elemental technologies to re... [more] AP2019-180
pp.165-170
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)
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