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Paper Abstract and Keywords
Presentation 2009-08-28 11:45
Experimental Evaluation of Ultra Wideband Radio Propagation in Spacecrafts for Applying Wireless Technologies to Interface Buses
Akihisa Matsubara, Tatsuya Ichikawa (Tokyo Denki Univ./JAXA), Atsushi Tomiki, Tomoaki Toda (JAXA), Takehiko Kobayashi (Tokyo Denki Univ./JAXA) SANE2009-54
Abstract (in Japanese) (See Japanese page) 
(in English) Ultra wideband (UWB) propagation was measured and characterized within spacecrafts, with a view to partly replacing onboard data buses with wireless connections. Spatial distributions of UWB and narrowband propagation in frequency (from 3.1 to 10.6 GHz) and time domains were measured with a microwave vector network analyzer. While narrowband resulted in a number of dead spots (deep fading points) within the conductive enclosures, UWB yielded none. This implies the UWB systems have an advantage over narrowband ones from a viewpoint of reducing fading margins. It was also found that delay spreads can be suppressed by partially paneling a radio absorber on the inner surfaces to facilitate high data rate transmission.
Keyword (in Japanese) (See Japanese page) 
(in English) radio propagation / ultra wideband / spacecraft data buses / delay spread / radio absorber / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 181, SANE2009-54, pp. 9-14, Aug. 2009.
Paper # SANE2009-54 
Date of Issue 2009-08-21 (SANE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 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 2009-08-28 - 2009-08-28 
Place (in Japanese) (See Japanese page) 
Place (in English) JAXA Sagamihara campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Astronautical mission, satellite technology, and general 
Paper Information
Registration To SANE 
Conference Code 2009-08-SANE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Experimental Evaluation of Ultra Wideband Radio Propagation in Spacecrafts for Applying Wireless Technologies to Interface Buses 
Sub Title (in English)  
Keyword(1) radio propagation  
Keyword(2) ultra wideband  
Keyword(3) spacecraft data buses  
Keyword(4) delay spread  
Keyword(5) radio absorber  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Akihisa Matsubara  
1st Author's Affiliation Tokyo Denki University/Japan Aerospace Exploration Agency (Tokyo Denki Univ./JAXA)
2nd Author's Name Tatsuya Ichikawa  
2nd Author's Affiliation Tokyo Denki University/Japan Aerospace Exploration Agency (Tokyo Denki Univ./JAXA)
3rd Author's Name Atsushi Tomiki  
3rd Author's Affiliation Japan Aerospace Exploration Agency (JAXA)
4th Author's Name Tomoaki Toda  
4th Author's Affiliation Japan Aerospace Exploration Agency (JAXA)
5th Author's Name Takehiko Kobayashi  
5th Author's Affiliation Tokyo Denki University/Japan Aerospace Exploration Agency (Tokyo Denki Univ./JAXA)
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Speaker Author-1 
Date Time 2009-08-28 11:45:00 
Presentation Time 25 minutes 
Registration for SANE 
Paper # SANE2009-54 
Volume (vol) vol.109 
Number (no) no.181 
Page pp.9-14 
#Pages 6 
Date of Issue 2009-08-21 (SANE) 

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