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Paper Abstract and Keywords
Presentation 2010-05-14 11:25
Onboard Antennas and Simulation of Service Availability for 21-GHz Band Broadcasting Satellite
Susumu Nakazawa, Masafumi Nagasaka, Shoji Tanaka, Kazuyoshi Shogen (NHK) AP2010-29
Abstract (in Japanese) (See Japanese page) 
(in English) Satellite broadcasting in the 21-GHz band is expected to transmit large-capacity signal by exploiting its wide bandwidth of 600MHz. However, it suffers from large rain attenuation. In order to compensate it, we have been studying rain fading mitigation techniques. In this paper, we show a method to control the radiation pattern dynamically in accordance with the movement of the rain area assuming array-fed reflector antenna using 61 horns. We compared the outage time using dynamically controlled radiation pattern (reconfigurable beam) formed by the array-fed reflector antenna with that using fixed radiation pattern formed by shaped reflector antenna while assuming the same input power to the antenna. According to the simulation during 7days, the accumulated outage time using dynamic radiation pattern was much less than 50% compared to that using static radiation pattern..
Keyword (in Japanese) (See Japanese page) 
(in English) Satellite broadcasting / 21-GHz band / Rain attenuation / Fading mitigation / Array-fed reflector antenna / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 23, AP2010-29, pp. 87-92, May 2010.
Paper # AP2010-29 
Date of Issue 2010-05-06 (AP) 
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)
Download PDF AP2010-29

Conference Information
Committee AP  
Conference Date 2010-05-13 - 2010-05-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Southeast Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) AP 
Paper Information
Registration To AP 
Conference Code 2010-05-AP 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Onboard Antennas and Simulation of Service Availability for 21-GHz Band Broadcasting Satellite 
Sub Title (in English)  
Keyword(1) Satellite broadcasting  
Keyword(2) 21-GHz band  
Keyword(3) Rain attenuation  
Keyword(4) Fading mitigation  
Keyword(5) Array-fed reflector antenna  
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Keyword(7)  
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1st Author's Name Susumu Nakazawa  
1st Author's Affiliation NHK (NHK)
2nd Author's Name Masafumi Nagasaka  
2nd Author's Affiliation NHK (NHK)
3rd Author's Name Shoji Tanaka  
3rd Author's Affiliation NHK (NHK)
4th Author's Name Kazuyoshi Shogen  
4th Author's Affiliation NHK (NHK)
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Speaker Author-4 
Date Time 2010-05-14 11:25:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2010-29 
Volume (vol) vol.110 
Number (no) no.23 
Page pp.87-92 
#Pages 6 
Date of Issue 2010-05-06 (AP) 

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