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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 91  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
AP 2020-05-21
11:25
Okinawa Tiruru Okinawa (Naha-city) 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]
AP 2019-02-22
14:25
Osaka Sumitomo Electric Industries (Osaka Works) [Invited Lecture] CRLH Transmission Line Leaky Wave Antenna with Dual Band and Dual Polarized Wave by Grounded Coplanar Transmission Line
Takayoshi Sasaki, Keisuke Sato, Ichiro Oshima (DKK), Naobumi Michishita (NDA), Keizo Cho (CIT) AP2018-183
The authors have developed a left-handed leaky wave sector antenna with a grounded coplanar line so far. In this report,... [more] AP2018-183
pp.77-82
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)
2018-05-30
09:30
Overseas The University of Da nang, University of Science and Technology Dual-band reflector backed dipole antenna loading choke equipped meander-loop parasitic elements
Mamoru Yamaguchi, Keizo Cho (Chiba Inst. of Tech.), Tatsuhiko Yoshihara, Taisuke Ihara (NTT DOCOMO)
We have reported a base station antenna configuration that can expand the operating bandwidth of a reflector backed dipo... [more]
AP
(2nd)
2018-05-30
15:00
Overseas The University of Da nang, University of Science and Technology Magnetic field distribution characteristic of linearly aligned magnetic material-loaded solenoid array
Yoshihiro Nakamura, Keizo Cho (Chiba Inst. of Tech.)
Due to the demand of miniaturization and high functionality for mobile terminals, miniaturization of a near field commun... [more]
AP 2018-04-19
14:25
Tokyo Hachijomachi-Shokokai Expanding lower side operating frequency of microstrip antenna using double layaer parasitic elements
Keizo Cho, Takashi Maki, Takuma Asano (Chiba Inst. of Tech.), Tatsuhiko Yoshihara, Taisuke Ihara (NTT DOCOMO) AP2018-2
 [more] AP2018-2
pp.7-12
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)
AP 2017-08-25
13:20
Hokkaido National Institute of Technology, Hakodate College Dual-Polarized Left-Handed Leaky Wave Antenna Using Grounded Coplanar Transmission Line
Takayoshi Sasaki, Keisuke Sato, Ichiro Oshima (Denki Kogyo), Naobumi Michishita (NDA), Keizo Cho (CIT) AP2017-85
In this report, we propose a leaky-wave dual-polarized sector antenna using a CRLH line with grounded coplanar line , as... [more] AP2017-85
pp.93-98
AP 2017-08-25
13:45
Hokkaido National Institute of Technology, Hakodate College Horizontally Polarized Dual-band Sector Antenna using FSR Comprising Alternately Placed Gang Buster Elements
Masato Hasegawa, Keizo Cho (CIT), Atsuya Ando (NTT) AP2017-86
This paper, investigates a configuration of 3.5GHz/2GHz band horizontally polarized sector antenna using Frequency Selec... [more] AP2017-86
pp.99-103
AP
(2nd)
2017-06-28
- 2017-06-30
Hokkaido Hokkaido University [Poster Presentation] 3.5/2GHz Dual-band Horizontally Polarized Sector Antenna Equipping Alternately Placed FSR
Masato Hasegawa, Keizo Cho (CIT), Atsuya Ando (NTT)
This paper proposes a 3.5/2GHz dual-band horizontally polarized sector antenna using frequency selective reflector (FSR)... [more]
AP
(2nd)
2017-06-28
- 2017-06-30
Hokkaido Hokkaido University [Poster Presentation] Effectiveness of Applying Folded Meander Loop Parasitic Elements to Enlarge Operating Frequency Band of Dual Polarized Reflector Backed Dipole Antenna.
Mamoru Yamaguchi, Keizo Cho (CIT), Tatsuhiko Yoshihara, Taisuke Ihara (NTT DOCOMO)
This paper proposes a reflector backed dipole antenna equipping folded meander loop parasitic elements which can enlarge... [more]
AP
(2nd)
2017-06-28
- 2017-06-30
Hokkaido Hokkaido University [Poster Presentation] Identification of Periodic Structure Target by Broadband Polarimetry Using Terahertz Radiation
Yuki Kamagata, Hiroaki Nakabayashi, Koji Suizu, Keizo Cho (Chiba Inst. Tech.)
This study demonstrates high precision non-destructive inspection of periodic linear targets using broadband terahertz p... [more]
AP 2017-05-19
11:20
Miyazaki Hotel MERIEGES Bandwidth Enlargement Maintaining Low HPBW Variation in Dual Band Reflector Backed Dipole Antenna Composed of Folded FSR
Keizo Cho, Yusuke Tanizawa (Chiba Inst. of Tech.), Atsuya Ando (NTT) AP2017-39
Multi-band antennas have been popularly used as base station antennas for mobile communication systems. We have proposed... [more] AP2017-39
pp.91-96
AP
(2nd)
2017-01-26
- 2017-01-27
Overseas Malaysia-Japan International Institute of Technology (MJIIT) Prediction Accuracy Using Theoretical Autocorrelation Coefficient of Fading Channel in Line-of-Sight Environment
Naoto Setoguchi, Hiroaki Nakabayashi, Keizo Cho (Chiba Inst.Tech.)
Abstract In this report, we investigate prediction accuracy of fading channels in line-of-sight (LOS) environment when ... [more]
AP 2016-03-10
10:55
Yamanashi Isawa Onsen (Kanpo no Yado) Equivalent Circuit Design of Unit Cell in Frequency Dispersive Phase Shifter Enlarging Frequency Dispersion of Phase Characteristics for Multi-Band Base Station Antenna
Yasuhito Yanagisawa, Ryuji Kataoka, Keizo CHO (CIT), Naobumi Michishita (NDA), Ichiro Oshima (DKK) AP2015-205
Frequency dispersive phase shifter for a multi-band base station antenna, which is capable of increasing the communicati... [more] AP2015-205
pp.7-11
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