Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
AP, MW (Joint) |
2017-09-21 14:25 |
Saitama |
Saitama University |
A Study of Quasi-Millimeter Wave Integrated Front-End Module Including Antenna and Filter Yasunori Suzuki, Kei Satoh, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO), Takana Kaho, Yo Yamaguchi, Maki Arai, Hiroyuki Shiba (NTT) MW2017-69 |
[more] |
MW2017-69 pp.5-9 |
NS, ASN, RCC, RCS, SR (Joint) |
2017-07-21 11:55 |
Hokkaido |
Hokkaido Univ. |
Propagation Experiment in LOS environment at 28GHz band for High SHF Wide-band Massive MIMO in 5G Kenji Nakagawa, Shigeru Uchida, Kazuaki Ishioka, Kiyoshige Nakamura, Akihiro Okazaki (Mitsubishi Electric), Kei Satoh, Satoshi Suyama, Jun Mashino, Yukihiko Okumura (NTT docomo), Atsushi Okamura (Mitsubishi Electric) RCS2017-137 |
Recently, mobile communication technologies for the fifth generation (5G) in higher frequency bands have been extensivel... [more] |
RCS2017-137 pp.227-232 |
RCS, IN, NV (Joint) |
2017-05-11 09:45 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
Performance Evaluation of High-SHF-Band Massive MIMO with Hybrid Beamforming by Using Real Propagation Channel Data Hiroyuki Miyazaki, Kei Satoh, Satoshi Suyama, Jun Mashino (NTT DOCOMO), Kenji Nakagawa, Hideo Umehara, Akihiro Okazaki (Mitsubishi Electric), Yukihiko Okumura (NTT DOCOMO) RCS2017-31 |
The 5th generation mobile communication system (5G) will introduce the use of higher frequency band with wider bandwidth... [more] |
RCS2017-31 pp.7-12 |
RCS |
2017-04-25 11:40 |
Kagawa |
Kotohira Onsen Kotosankaku |
Outdoor Experiment of 28 GHz-band Super Wide Bandwidth Massive MIMO Transmission for 5G in Urban Area Kei Satoh, Hiroyuki Miyazaki, Jun Mashino, Satoshi Suyama, Yuki Inoue, Yukihiko Okumura (NTT DOCOMO) RCS2017-21 |
The fifth-generation (5G) mobile communication system has attracted much attention to provide various kinds of mobile se... [more] |
RCS2017-21 pp.107-112 |
RCS, SR, SRW (Joint) |
2017-03-02 09:00 |
Tokyo |
Tokyo Institute of Technology |
Outdoor Experiment of 28 GHz-band Super Wide Bandwidth Massive MIMO Transmission for 5G
-- High Mobility Experiment in Fuji Speedway -- Jun Mashino, Kei Satoh, Satoshi Suyama, Yuki Inoue, Yukihiko Okumura (NTT DOCOMO) RCS2016-306 |
The fifth-generation (5G) mobile communication system has attracted much attention to provide various kinds of mobile se... [more] |
RCS2016-306 pp.103-108 |
RCS, SR, SRW (Joint) |
2017-03-02 09:25 |
Tokyo |
Tokyo Institute of Technology |
Outdoor Experiment of 28 GHz-band Super Wide Bandwidth Massive MIMO Transmission for 5G
-- Experimental Trial in Urban Area -- Kei Satoh, Hiroyuki Miyazaki, Jun Mashino, Satoshi Suyama, Yuki Inoue, Yukihiko Okumura (NTT DOCOMO) RCS2016-307 |
The fifth-generation (5G) mobile communication system has attracted much attention to provide various kinds of mobile se... [more] |
RCS2016-307 pp.109-114 |
RCS, AP (Joint) |
2016-11-25 10:25 |
Kyoto |
Kyoto International Community House |
OFDM Performance of 5G Ultra High Capacity Massive MIMO Transmission based on Indoor Experiment Measurement at 44GHz band Kenji Nakagawa, Shigeru Uchida, Hiroki Iura, Hideki Morishige, Akihiro Okazaki (Mitsubishi Electric), Satoshi Suyama, Kei Satoh, Tatsunori Obara, Yukihiko Okumura (NTT docomo), Atsushi Okamura (Mitsubishi Electric) RCS2016-202 |
Recently, mobile communication technologies for the fifth generation (5G) in heigher frequency bands have been extensive... [more] |
RCS2016-202 pp.63-68 |
MW, AP (Joint) |
2015-09-17 13:55 |
Tochigi |
Oyama National College of Tech. |
[Invited Lecture]
RF front-end configuration of Massive-MIMO base station Yasunori Suzuki, Kei Satoh, Makoto Sumi, Atsushi Fukuda, Shoichi Narahashi (NTT DOCOMO) AP2015-83 MW2015-90 |
This paper presents an overview of requirements and technical issues regarding a RF front-end module for Massive-MIMO ba... [more] |
AP2015-83 MW2015-90 pp.21-25(AP), pp.19-23(MW) |
AP, MW (Joint) |
2014-09-18 09:30 |
Tokyo |
Tokyo Institute of Technology, Ookayama Campus |
[Invited Lecture]
A Basic Study on Quad-band Bandpass Filter with Line Structure Comprising Cascade Connection of CRLH-TL Cells Having Two Different Element Values Kei Satoh, Yasunori Suzuki, Yuta Takagi, Shoichi Narahashi (NTT DOCOMO) AP2014-91 MW2014-84 |
This paper presents a basic study on a quad-band bandpass filter (QBPF) with a line structure comprising cascade connect... [more] |
AP2014-91 MW2014-84 pp.1-4 |
MW |
2014-05-22 09:30 |
Kyoto |
Doshisha Univ. |
A Circuit Construction of Parallel Ring-Lines Type Rat-Race Circuit with Very Loose Coupling Utilizing Composite Right-/Left-Handed Transmission Lines Yousuke Daimon, Tadashi Kawai, Akira Enokihara, Isao Ohta (Univ. of Hyogo), Kei Satoh, Yasunori Suzuki, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO) MW2014-25 |
[more] |
MW2014-25 pp.7-12 |
MW |
2014-03-04 11:50 |
Ehime |
Ehime University |
Design of Broadband Branch-Line Hybrid with Loose Coupling Utilizing Open-/Short-Circuited Coupled Transmission Lines Nobuo Nakajima, Tadashi Kawai, Akira Enokihara, Isao Ohta (Univ. of Hyogo), Kei Satoh, Yasunori Suzuki, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO) MW2013-201 |
This paper describes broadband branch-line hybrids with loose coupling factors utilizing open-/short-circuited coupled t... [more] |
MW2013-201 pp.23-27 |
MW |
2013-03-06 13:25 |
Hiroshima |
Hiroshima Univ. |
Miniaturization of a Multilayered Dual-Band Bandpass Filter Yuta Takagi, Kei Satoh, Shoichi Narahashi (NTT DOCOMO) MW2012-164 |
[more] |
MW2012-164 pp.33-36 |
MW |
2012-12-13 16:15 |
Yamanashi |
Univ. of Yamanashi |
Parallel-Ring-Type Rat-Race Circuit for Loose Coupling Utilizing Composite Right/Left-Handed Transmission Lines Yuma Simitomo, Tadashi Kawai, Akira Enokihara, Isao Ohta (Univ. of Hyogo), Kei Satoh, Yasunori Suzuki, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO) MW2012-132 |
This paper treats a parallel-ring-type rat-race circuit for loose coupling utilizing composite right-/left-handed transm... [more] |
MW2012-132 pp.31-36 |
SR |
2012-05-24 17:15 |
Kanagawa |
Keio univ. at Hiyoshi |
[Panel Discussion]
Multi-band operation for mobile terminals Shoichi Narahashi, Hiroshi Okazaki, Atsushi Fukuda, Takayuki Furuta, Kunihiro Kawai, Kei Satoh, Yuta Takagi (NTT DOCOMO) SR2012-12 |
It is a key issue for radio frequency (RF) circuits of future mobile terminals to equip with multi-band operation archit... [more] |
SR2012-12 pp.73-78 |
MW |
2012-03-02 13:00 |
Saga |
Saga University |
High Power Operation for Broadband Branch-Line Coupler with Coupled Lines Tadashi Kawai, Toshiki Hayashi, Akira Enokihara, Isao Ohta (Univ. of Hyogo), Kei Satoh, Yasunori Suzuki, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO) MW2011-184 |
[more] |
MW2011-184 pp.91-95 |
OPE, MW, MWP, EMT, EST, IEE-EMT [detail] |
2011-07-22 12:15 |
Hokkaido |
|
Dual-Band Bandpass Filter Using Multilayered LTCC Technologies Yuta Takagi, Kei Satoh, Shoichi Narahashi (NTT DOCOMO) MW2011-61 OPE2011-48 EST2011-47 MWP2011-29 |
[more] |
MW2011-61 OPE2011-48 EST2011-47 MWP2011-29 pp.131-134 |
MW |
2011-06-23 15:15 |
Gifu |
National Institute for Fusion Science |
New Approach for Configuring a Compact High-Temperature Superconducting Dual-Band Bandpass Filter Yuta Takagi, Kei Satoh, Shoichi Narahashi (NTT DOCOMO) MW2011-34 |
[more] |
MW2011-34 pp.13-16 |
SCE, MW |
2010-04-23 10:45 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
High-Temperature Superconducting Parallel-Planar Dual-Band Bandpass Filter
-- Evaluation of Frequency Responses Affected by Temperature Difference between Two Substrates -- Yuta Takagi, Kei Satoh, Daisuke Koizumi, Shoichi Narahashi (NTT DOCOMO) SCE2010-4 MW2010-4 |
We have been proposed a high-temperature superconducting parallel-planar dual-band bandpass filter (HTS-DBPF) which has ... [more] |
SCE2010-4 MW2010-4 pp.17-22 |
SCE, MW |
2010-04-23 11:10 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
Available fractional bandwidths for high temperature superconducting compact dual-band bandpass filter Kei Satoh, Yuta Takagi, Shoichi Narahashi (NTT DOCOMO), Toshio Nojima (Hokkaido Univ.) SCE2010-5 MW2010-5 |
This paper presents a flexible design method for dual-band bandpass filters. The gist of the proposed method lies in usi... [more] |
SCE2010-5 MW2010-5 pp.23-26 |
MW |
2009-11-19 14:55 |
Kagoshima |
Tanegashima |
Improvement in Capacity Performance of W-CDMA Systems Achieved through Cryogenic Receiver Front-End Kei Satoh, Yasunori Suzuki, Tetsuya Mimura, Shoichi Narahashi (NTT DOCOMO), Toshio Nojima (Hokkaido Univ.) MW2009-132 |
This paper presents an improvement in capacity performance of a wideband code division multiple access (W-CDMA) system r... [more] |
MW2009-132 pp.25-28 |