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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| RCS, AP, UWT (Joint) |
2022-11-15 11:00 |
Fukuoka | Kyushu University, and Online (Primary: On-site, Secondary: Online) |
Channel Capacity Evaluation of Sector Antennas for a 28GHz Band Indoor Base Station by their Directivity Shota Matsumoto, Arai Hiroyuki (Yokohama National Univ.), Yuki Inoue, Yasuko Kimura (NTT DOCOMO)  AP2022-150 |
The propagation loss of indoor-to-outdoor communications is very large at high frequencies. Therefore, we consider an in... [more] | AP2022-150 pp.18-23 |
| AP, MW (Joint) |
2022-09-14 12:00 |
Ehime | The Museum of Art, EHIME (Primary: On-site, Secondary: Online) |
A Study on Low Side-lobes Level of Yagi-Uda Antenna Yasuko Kimura, Yuki Inoue (NTT DOCOMO), Tomoyuki Soga, Makoto Mizumura (Nihon Dengyo Kosaku), Hiroyuki Arai (Yokohama National Univ.) AP2022-74 |
[more] | AP2022-74 pp.17-21 |
| AP, MW (Joint) |
2022-09-15 14:15 |
Ehime | The Museum of Art, EHIME (Primary: On-site, Secondary: Online) |
Propagation experiment using 28GHz multi-sector antenna for indoor base station Yuki Inoue, Yasuko Kimura (NTT DOCOMO), Hiroyuki Arai (Yokohama National Univ.) AP2022-80 |
More higher frequency band will be used in Beyond 5G or 6G mobile communication system. To cover the area of indoor envi... [more] | AP2022-80 pp.50-55 |
| AP | 2022-05-19 13:50 |
Hyogo | Kobe Port Oasis (Primary: On-site, Secondary: Online) |
28GHz multi-sector antenna for indoor base station Hiroyuki Arai, Ryota Sinozaki (Yokohama Natl. Univ.), Yuki Inoue, Yasuko Kimura (NTT DOCOMO, INC.) AP2022-17 |
[more] | AP2022-17 pp.35-38 |
| 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 |
| AP | 2016-01-15 10:20 |
Tokyo | Takushoku University, Hachiouji Campus | [Invited Lecture]
The dual polarization antenna suitable for the adaptive area control Yasuko Kimura, Sadayuki Abeta (NTT DOCOMO) AP2015-179 |
Advanced C-RAN architecture which achieve carrier aggregation between macro cell and multiple small cell in heterogeneou... [more] | AP2015-179 pp.65-70 |
| AP | 2015-02-19 14:10 |
Hyogo | Chusho-kigyou center at Amagasaki-City | [Invited Lecture]
A dual polarization antenna using a part of spherical reflector with a rim Yasuko Kimura (NTT docomo), Yoshio Ebine (NDK) AP2014-194 |
It is important the introduction of small cell base stations for Advanced C-RAN architecture which increases the radio c... [more] | AP2014-194 pp.43-48 |
| AP | 2011-05-13 09:20 |
Kagoshima | A Realization Study for a Vertical Polarized Base Station antenna Illuminating Three-Sector Cell for 800MHz Band and Six-sector Cell for 2GHz Band Yasuko Kimura, Keizo Cho (NTT DOCOMO) AP2011-15 |
Mobile communication systems and antennas for the systems have been employing multiband, diversity, and sector cell conf... [more] | AP2011-15 pp.55-60 |
|
| MWP | 2011-04-28 11:05 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | [Invited Talk]
RoF system for Dual W-CDMA and LTE Systems Yutaka Fuke, Daisuke Tanigawa, Masahiro Fujii, Yasuko Kimura (NTT DOCOMO) MWP2011-4 |
NTT DOCOMO began a high-speed, high-capacity, low-latency service using the LTE system in December 2010, and we have dev... [more] | MWP2011-4 pp.15-19 |
| MW | 2009-11-19 13:25 |
Kagoshima | Tanegashima | Shortening Resonant Length of a Reflector backed C-shaped Horizontal Polarized Dipole Antenna with Stub Loading Yasuko Kimura, Keizo Cho (NTT DOCOMO) MW2009-129 |
Multi-frequency and dual-polarized antennas have been developed for limited installation space and reduction of the empl... [more] | MW2009-129 pp.7-12 |
| ACT (2nd) |
2008-12-01 16:20 |
Kyoto | Doshisha Univ. (Imadegawa campus) | Far-Field Measurement Method in the Short Range Anechoic Chamber Ryo Yamaguchi, Yasuko Kimura, Kazuhiro Komiya, Keizo Cho (NTT DOCOMO) |
[more] | |
| AP | 2008-10-17 13:25 |
Miyagi | Tohoku Gakuin University | Plane Wave Characteristics of Far-field Measurement Method by Using Synthetic Aperture Antenna Ryo Yamaguchi, Yasuko Kimura, Kazuhiro Komiya, Keizo Cho (NTT DOCOMO) AP2008-103 |
[more] | AP2008-103 pp.49-54 |
| AP, SAT (Joint) |
2008-07-23 15:40 |
Hokkaido | Hokkaido University | Characteristics of Far-field Measurement Method for Large Size Antenna by Using Synthetic Aperture Antenna Ryo Yamaguchi, Yasuko Kimura, Keizo Cho (NTT DoCoMo) AP2008-48 |
[more] | AP2008-48 pp.69-74 |
| AP, SAT (Joint) |
2008-07-25 13:25 |
Hokkaido | Hokkaido University | Characteristics of Broadband HPBW in the Horizontal Plane on A Horizontal Polarized Antenna for 3-sector Yasuko Kimura, Ryo Yamaguchi, Keizo Cho (NTT DoCoMo) AP2008-64 |
It is known that the multi-band antenna is used at the base station for mobile communications according to various envir... [more] | AP2008-64 pp.155-160 |
| AP | 2008-05-16 10:25 |
Nagasaki | Sasebo national college of technology | A Far-field measurement Method for Large Size Antenna by Using Synthetic Aperture Antenna Ryo Yamaguchi, Yasuko Kimura, Keizo Cho (NTT DoCoMo) AP2008-19 |
[more] | AP2008-19 pp.47-52 |
| AP, SAT (Joint) |
2007-07-19 11:30 |
Hokkaido | Daiichi-Takimotokan(Noboribetsu) | Impedance Matching for a Multi-band Printed Monopole Antenna by Microstrip Feed Line Yasuko Kimura, Tetsuro Imai (NTT DoCoMo) AP2007-49 |
It is known that the antenna performance is affected by miniaturization. And also to aid in miniaturization, the electri... [more] | AP2007-49 pp.41-46 |
| AP | 2007-01-25 14:15 |
Fukui | Fukui Univ. | A Multi-band Printed Monopole Antenna Yasuko Kimura, Yoshio Ebine (DoCoMo Technology) AP2006-117 |
There is a miniaturization module that integrates a data communication adapter with wireless system. Current mobile comm... [more] | AP2006-117 pp.43-48 |
| AP, SAT (Joint) |
2006-05-18 11:15 |
Kagoshima | Kagoshima Univ. | Relations between Vertical Radiation Pattern and Down-link Capacity for Base Station Antenna of IMT-2000 Yasuko Kimura, Yoshio Ebine (DoCoMo Technology, Inc.), Tetsuro Imai (NTT DoCoMo, Inc.), Hiroyuki Arai (Yokohama National Univ.) AP2006-14 |
A shaped beam pattern for the base station array antenna using the IMT-2000 system, for example cosecant beam pattern, i... [more] | AP2006-14 pp.29-34 |
| AP, RCS (Joint) |
2005-10-20 14:50 |
Akita | Akita Prefectural Univ. | Controlled H.P.B.W. of a Polarization Diversity Base Station Antenna using Three-sector zone for Cellular Mobile Radios Yasuko Kimura, Yoshio Ebine (DoCoMo Technology) |
It is known that in order to increase system capacity for IMT-2000, the beam width in the horizontal plane at base stati... [more] | AP2005-94 pp.63-67 |
| AP, SAT (Joint) |
2005-07-22 13:25 |
Hokkaido | Hotel Taisetsu | Low Side-lobe Narrow Beam Antennas with Closely Arranged Conductive Poles for 6 Sector Site Yasuko Kimura, Keizo Cho (NTT DoCoMo), Yoshio Ebine (DoCoMo Tech.) |
It is known that a narrow beam antenna, which is smaller than the base station’s sector angle, is effective for IMT-2000... [more] | AP2005-63 pp.149-154 |
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