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Paper Abstract and Keywords
Presentation 2012-06-29 16:10
Measurement and digital predistortion on high-efficiency GaN based power amplifier for nano/small satellite high-speed communication system
Hiromi Watanabe (Tokyo University), Atsushi Tomiki (JAXA), Naohiko Iwakiri, Tomoya Fukami (Tokyo University), Hirobumi Saito (JAXA), Shinichi Nakasuka (Tokyo University) SANE2012-40
Abstract (in Japanese) (See Japanese page) 
(in English) A high-speed downlink communication system is required to meet different applications for nano/small satellites.
Therefore, it is essential to implement a power- and weight-limited transmitter in such satellites. Our recent research has
focused on an efficient system with the limited transmitter incorporating a powerful ground station receiver. To overcome
signal distortion at the cost of some limitations of the transmitter, an SCCC turbo equalization system equipped with nonlineardistortion compensation techniques in the receiver has been developed. However, digital predistortion on the transmitter is known as a powerful complementary nonlinearity of power amplifier. We are developing predistortion scheme for nano satellite transmitter. We evaluate performances of the new GaN-HEMT power amplifier. The results indicate that the new PA performances are suitable for multi-level modulation high-speed downlink system with predistortion such as 16-QAM system.Therefore, the power amplifier with high efficiency can be implemented
Keyword (in Japanese) (See Japanese page) 
(in English) nano satellite / satellite communication system / GaN power amplifier / predistortion / / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 107, SANE2012-40, pp. 111-116, June 2012.
Paper # SANE2012-40 
Date of Issue 2012-06-21 (SANE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee SANE  
Conference Date 2012-06-28 - 2012-06-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Tsukuba Space Center, JAXA 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Space applications symposium 
Paper Information
Registration To SANE 
Conference Code 2012-06-SANE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Measurement and digital predistortion on high-efficiency GaN based power amplifier for nano/small satellite high-speed communication system 
Sub Title (in English)  
Keyword(1) nano satellite  
Keyword(2) satellite communication system  
Keyword(3) GaN power amplifier  
Keyword(4) predistortion  
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1st Author's Name Hiromi Watanabe  
1st Author's Affiliation Tokyo University (Tokyo University)
2nd Author's Name Atsushi Tomiki  
2nd Author's Affiliation Japan Aerospace Exploration Agency (JAXA)
3rd Author's Name Naohiko Iwakiri  
3rd Author's Affiliation Tokyo University (Tokyo University)
4th Author's Name Tomoya Fukami  
4th Author's Affiliation Tokyo University (Tokyo University)
5th Author's Name Hirobumi Saito  
5th Author's Affiliation Japan Aerospace Exploration Agency (JAXA)
6th Author's Name Shinichi Nakasuka  
6th Author's Affiliation Tokyo University (Tokyo University)
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Speaker Author-1 
Date Time 2012-06-29 16:10:00 
Presentation Time 25 minutes 
Registration for SANE 
Paper # SANE2012-40 
Volume (vol) vol.112 
Number (no) no.107 
Page pp.111-116 
#Pages
Date of Issue 2012-06-21 (SANE) 


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