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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 36  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
AP 2022-08-19
11:20
Tochigi Tochigi Prefecture Industrial Center
(Primary: On-site, Secondary: Online)
Dual-Polarized Biparite Huygens'Metasaurface with Anomalous Wave Reflection for Local 5G Application
Tanan Hongnara, Takayoshi Sasaki, Yoshiki Shirasawa, Katsumori Sasaki, Keisuke Sato, Ichiro Oshima (DKK), Keizo Cho (CIT), Naobumi Michishita (NDA), Hiroaki Nakabayashi (CIT)
 [more]
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)
 [more]
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)
 [more]
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)
MW, AP
(Joint)
2019-09-20
11:20
Kanagawa JAXA (Sagamihara) [Tutorial Lecture] Application of Machine Learning to Propagation Loss Prediction -- Bridge Connecting Propagation Models --
Hiroaki Nakabayashi (Chiba Tech) AP2019-77
On propagation loss prediction used for link design and station installation design in land mobile communications, in or... [more] AP2019-77
pp.43-47
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 Power transmission efficiency of magnetic material loaded solenoid in the vicinity of circuit ground
Yoshihiro Nakamura, Cho Keizo, Hiroaki Nakabayashi (Chiba Institute of Tech)
Small solenoid whose diameter is about 1mm has been proposed for the NFC antenna. When the NFC antenna is installed to t... [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]
AP
(2nd)
2018-12-06
14:05
Kagoshima Amami-city AiAi Hiroba Observation of Target with various structure in THz-POLSAR
Katsui Arahara, Hiroaki Nakabayashi, Koji Suizu, Keizo Cho (CIT)
Terahertz wave is electromagnetic wave which have both characteristics of radio wave and light wave, and it is possible ... [more]
AP
(2nd)
2018-05-31
10:15
Overseas The University of Da nang, University of Science and Technology A Study of User Capacity for Massive MIMO in Urban Street Canyon Environment
Takuya Nitsu, Hiroaki Nakabayashi (Chiba Inst.Tech)
The purpose of this study is to indicate a user capacity for a massive MIMO using a block diagonalization (BD) method in... [more]
AP, RCS
(Joint)
2017-11-08
14:55
Fukuoka Fukuoka University [Invited Lecture] Channel Prediction in LOS Environment by AR Model Using Estimation of LOS Propagation Parameters
Naoto Setoguchi, Hiroaki Nakabayashi, Keizo Cho (Chiba Inst.Tech.) AP2017-117 RCS2017-214
In MIMO technology, feedback delay of channel state information is regarded as a cause of deterioration of transmission ... [more] AP2017-117 RCS2017-214
pp.49-54(AP), pp.53-58(RCS)
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