Presentation 2016-02-16
High Power transmitter for X band SAR system on Small satellite
Hiromi Watanabe, Hirobumi Saito,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) We are now developing subsystems in order to put our X-band Synthetic Aperture Radar system for 100kg class small satellite. In this paper, our developing high power transmitter, which is important not only for SAR system but also whole satellite design, is reported. We designed a 1000W class solid state power amplifier (SSPA) and conducted experiments, and we obtained good results. In addition, leakage of RF power is inevitable problem for Radar system which has both transmitter and receiver inside it. We are now trying to overcome this problem without any performance degradation by using GaN-LNA and sequential controlled power supply.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Small satellite / Synthetic Aperture Radar / X-band / GaN-HEMT / SSPA / LNA
Paper # SANE2015-109
Date of Issue 2016-02-09 (SANE)

Conference Information
Committee SAT / SANE
Conference Date 2016/2/16(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Hiroshima Institute of Technology
Topics (in Japanese) (See Japanese page)
Topics (in English) Satellite Application and General
Chair Morio Toyoshima(NICT) / Hirokazu Kobayashi(Osaka Inst. of Tech.)
Vice Chair Takatoshi Sugiyama(Kogakuin Univ.) / Toshinori Susuki(Tohoku Gakuin Univ.) / Masanobu Tsuji(JAXA) / Takahide Mizuno(JAXA)
Secretary Takatoshi Sugiyama(NICT) / Toshinori Susuki(NTT) / Masanobu Tsuji(Univ. of Electro-Comm.) / Takahide Mizuno(JAXA)
Assistant / Yasushi Obata(Mitsubishi Electric) / Atsushi Kezuka(ENRI)

Paper Information
Registration To Technical Committee on Satellite Telecommunications / Technical Committee on Space, Aeronautical and Navigational Electronics
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) High Power transmitter for X band SAR system on Small satellite
Sub Title (in English)
Keyword(1) Small satellite
Keyword(2) Synthetic Aperture Radar
Keyword(3) X-band
Keyword(4) GaN-HEMT
Keyword(5) SSPA
Keyword(6) LNA
1st Author's Name Hiromi Watanabe
1st Author's Affiliation The University of Tokyo(UT)
2nd Author's Name Hirobumi Saito
2nd Author's Affiliation Japan Aerospace Exploration Agency(JAXA)
Date 2016-02-16
Paper # SANE2015-109
Volume (vol) vol.115
Number (no) SANE-447
Page pp.pp.13-18(SANE),
#Pages 6
Date of Issue 2016-02-09 (SANE)