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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 26  /  [Next]  
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
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