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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| 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 | 2018-05-18 14:25 |
Kumamoto | Kumamoto Univ. | Improving Channel Capacity in Indoor 4 x 4 MIMO Base Station Utilizing Small Bi-Directional Antenna Bakar Rohani, Kanata Takahashi, Hiroyuki Arai (Yokohama National Univ.), Yasuko Kimura, Taisuke Ihara (NTT DoCoMo)  AP2018-32 |
This paper presents a low profile 4 x 4 MIMO bi-directional antenna consisting of two composite antennas mounted on a gr... [more] | AP2018-32 pp.105-110 |
| RCS | 2018-04-23 15:05 |
Yamaguchi | Hotel New Tanaka, Yuda Onsen | [Invited Lecture]
Investigation on Unmanned Aerial Vehicle with Cellular Network Taisuke Ihara, Takashi Hara, Jiang Huiling, Syou Yoshida, Takefumi Yamada, Yoshihiro Ishikawa (NTT DOCOMO) RCS2018-11 |
[more] | RCS2018-11 p.57 |
| 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 (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) |
2016-02-29 15:25 |
Overseas | Telecommunications University, Nha Trang, Vietnam | Prototype evaluation of Reflector Backed Dipole antenna with Folded Loop-shaped Parasitic Elements Takayoshi Sasaki, Keizo Cho (Chiba Inst. of Tech.), Tatsuhiko Yoshihara, Taisuke Ihara (NTT DOCOMO) |
It has been reported that loading the Loop-shaped Parasitic Element can expand the operating frequency band of the Refle... [more] | |
| AP, RCS, WPT, SAT (Joint) |
2015-11-05 15:00 |
Okinawa | Okinawa Prefectural Museum & Art Museum | Effect by Folded Loop Elements for Reflector Backed Dipole Antenna Using Loop Parasitic Elements Takayoshi Sasaki, Keizo Cho (Chiba Inst. of Tech.), Taisuke Ihara, Tatsuhiko Yoshihara (NTT DOCOMO) AP2015-140 |
It has been reported that loading the Loop-shaped Parasitic Element can expand the operating frequency band of the Refle... [more] | AP2015-140 pp.173-178 |
| AP | 2015-01-23 13:55 |
Ehime | Ehime University | Bandwidth Enlargement of Reflector Backed Dipole Antenna Using Loop Parasitic Elements Takayoshi Sasaki, Keizo Cho (Chiba Inst. of Tech.), Taisuke Ihara, Tatsuhiko Yoshihara (NTT DOCOMO) AP2014-181 |
[more] | AP2014-181 pp.115-120 |
| AP | 2014-06-12 15:45 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | System Capacity Improvement by Application of Small Cell Antenna Vertical Tilt Sho Yoshida, Tatsuhiko Yoshihara, Hiroyuki Kawai, Taisuke Ihara, Takahiro Takiguchi, Kengo Yagyu (NTT DOCOMO) AP2014-47 |
Recently, introduction of small cells with lower transmission power in hotspots within macro cells is being studied as a... [more] | AP2014-47 pp.41-46 |
| AP (2nd) |
2014-05-15 - 2014-05-16 |
Ishikawa | The Kanazawa Theatre | Dual Beam Antenna for 6-Sector Cellular System with Hybrid Coupler Yoshihiro Kozuki, Hiroyuki Arai (Yokohama National Univ.), Huiling Jiang, Taisuke Ihara (NTT DOCOMO) |
This paper proposes the dual beam antennas. By the parasitic element, metal conductor and diagonally arranged the propos... [more] | |
| RCS, AP (Joint) |
2013-11-22 13:00 |
Shimane | Matsue Terrsa | [Tutorial Lecture]
Current Status of the Development of Base Station Antenna for Mobile Communication System Taisuke Ihara, Hiroyuki Kawai, Tatsuhiko Yoshihara, Sho Yoshida (NTT DOCOMO) AP2013-122 RCS2013-200 |
This paper explains the details of the Japan’s first base station antenna that is compatible with five frequency bands a... [more] | AP2013-122 RCS2013-200 pp.127-132(AP), pp.153-158(RCS) |
| AP, SAT (Joint) |
2012-07-26 09:30 |
Hokkaido | Hokkaido Univ. | The Control Method of Tilt Angel to Reduce the Inter-Cell Interference for MIMO Base Station Antenna Using Vertically Split Array Sho Yoshida, Huiling Jiang, Taisuke Ihara, Keizo Cho (DOCOMO) AP2012-48 |
The MMS-VSA antenna, which using split sub-array in vertical direction, can improve the branch number of base station an... [more] | AP2012-48 pp.101-106 |
| RCS, CS (Joint) |
2005-08-25 15:30 |
Tokyo | Tokyo Inst. Tech. | Investigations on Optimum Guard Interval Length in Uniast Channel for OFDM Radio Access in Evolved UTRA Downlink Taisuke Ihara, Hiroyuki Atarashi, Akihito Morimoto, Yoshihisa Kishiyama, Kenichi Higuchi, Mamoru Sawahashi (NTT DoCoMo) |
This paper investigates the optimum guard interval length using cyclic prefix (CP) in Unicast channel for OFDM radio acc... [more] | RCS2005-70 pp.37-42 |
| RCS, AP | 2004-10-29 10:50 |
Niigata | Niigata University | Field Experiments on Received SINR and Throughput Considering Other-Sector Interference in Forward Link VSF-OFCDM Broadband Wireless Access Yoshihisa Kishiyama, Taisuke Ihara, Kenichi Higuchi, Hiroyuki Atarashi, Mamoru Sawahashi (NTT DoCoMo) |
[more] | AP2004-167 RCS2004-188 pp.83-88 |
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