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All Technical Committee Conferences  (All Years)

Search Results: Conference Papers
 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 11件中 1~11件目  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS, SAT
(Joint)
2019-08-22
13:05
Aichi Nagoya University [Invited Lecture] Channel Capacity Analysis of LEO MIMO System Considering the Satellite Attitude
Chihaya Kato, Mitsuhiro Nakadai (JAXA), Daisuke Goto, Hiroki Shibayama, Fumihiro Yamashita (NTT)
With the improving sensor capabilities of Earth observation satellites and the introduction of the constellation service... [more] SAT2019-24 RCS2019-153
pp.39-44
SANE, SAT
(Joint)
2019-02-13
13:30
Kagoshima Tanegashima Island Analysis of the MIMO channel for LEO Satellites
Chihaya Kato, Mitsuhiro Nakadai (JAXA), Daisuke Goto, Daiki Shibayama, Fumihiro Yamashita (NTT)
In the Low Earth Orbital (LEO) Satellites, transmission data rate of the satellite communication is rapidly increasing t... [more] SAT2018-60
pp.17-22
SANE 2018-06-22
15:40
Ibaraki Tsukuba Space Center, JAXA VCM System with Only Variable Modulation Scheduling According to Satellite Elevation Angle
Chihaya Kato, Mitsuhiro Nakadai, Yajima Masanobu (JAXA)
Recently, researches and developments of higher-order modulation and broadband telecommunication systems become more int... [more] SANE2018-19
pp.33-37
SANE 2018-06-22
16:05
Ibaraki Tsukuba Space Center, JAXA Development of spread spectrum command receiver for space use
Mitsuhiro Nakadai, Chihaya Kato, Masanobu Yajima (JAXA), Hideto Okada, Masanobu Ohtake, Chihiro Sakakibara (NEC Space)
Although the spread spectrum achieves stable communication by suppressing interferer by spreading process, since the sat... [more] SANE2018-20
pp.39-44
WPT 2016-03-07
15:45
Kyoto Kyoto Univ. Uji Campus Examination for Improving Microwave Beam-pointing Control Accuracy Applied to Space Solar Power Systems
Katsumi Makino, Daisuke Joudoi, Mitsuhiro Nakadai, Masanobu Yajima, Kazuo Ohashi (JAXA), Tomohiro Takahashi, Shuji Nuimura, Yukihiro Homma (MELCO)
JAXA has developed a high-accuracy microwave beam-pointing controller for a wireless power transmission ground test and ... [more] WPT2015-82
pp.33-37
SAT 2015-10-08
11:15
Osaka Osaka University Nakanoshima Center Simulation and Measurement results of BER Performance and Spectrum Distortion under High-order Modulation with the X-band GaN SSPA
Mitsuhiro Nakadai (JAXA), Masahiro Funabashi, Toshihumi Inome (NEC Space)
Japan Aerospace Exploration Agency (JAXA) has developed a 20W class X-band Solid State Power Amplifier (SSPA) using gall... [more] SAT2015-39
pp.123-127
SANE 2015-06-18
17:10
Ibaraki Tsukuba Space Center, JAXA Development and Demonstration of the High-Precision Beam Steering Controller for Microwave Power Transmission, which takes account of applying to SSPS(Space Solar Power Systems)
Katsumi Makino, Daisuke Joudoi, Mitsuhiro Nakadai, Masanobu Yajima, Kazuo Ohashi (JAXA), Tomohiro Takahashi, Takuro Sasaki, Yukihiro Homma (MELCO)
(To be available after the conference date) [more] SANE2015-22
pp.37-42
SANE 2014-06-20
14:45
Ibaraki Tsukuba Space Center, JAXA Development of 20W class X-band Amplifier using GaN -- The Feasibility Study by the System Evaluation --
Mitsuhiro Nakadai, Johta Awano, Masanobu Yajima (JAXA), Masahiro Funabashi, Tomo Sakata (NTSpace)
Japan Aerospace Exploration Agency (JAXA) has developed a 20W class X-band Solid State Power Amplifier (SSPA) using gall... [more] SANE2014-36
pp.75-78
SANE 2013-12-02
16:30
Overseas VAST/VNSC(2nd Dec.) & Melia Hotel (3rd Dec), Hanoi, Vietnam Development of a 20W class X-band Amplifier using GaN HEMT Technology for Space Use
Mitsuhiro Nakadai, Johta Awano, Masaaki Shimada (JAXA), Masahiro Funabashi (NTSpace)
Japan Aerospace Exploration Agency (JAXA) has developed a 20W class X-band Solid State Power Amplifier (SSPA) using gall... [more] SANE2013-92
pp.121-126
SANE 2013-04-25
13:50
Nagano Usuda Deep Space Center, JAXA Developement of highly efficient S-band GaN/SSPA for space use
Johta Awano, Mitsuhiro Nakadai, Masaaki Shimada (JAXA), Takeshi Kawabata, Kougo Nakade, Megumi Nakayama, Akira Tsuchiko (MELOS)
 [more] SANE2013-3
pp.13-16
SANE 2012-04-27
09:40
Nagano Usuda Deep Space Center, JAXA Suggestion for Selection Methods of Pre-distortion with Low Consumption Power Amplifier for High-Speed Communication on Small Satellites
Mitsuhiro Nakadai, Naohiko Iwakiri (Tokyo Univ.), Hirobumi Saito (JAXA)
Multi-level modulation is useful for Efficient use of frequency band to achieve the high-speed communications on small s... [more] SANE2012-6
pp.29-34
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