Paper Abstract and Keywords |
Presentation |
2010-08-27 10:50
Excitation Condition of Array-Fed Reflector Antennas for 100-Beam-Class Multibeam Communications Satellite Yoshiyuki Fujino, Naokazu Hamamoto, Amane Miura, Teruaki Orikasa, Ryutaro Suzuki (NICT), Shin-ichi Yamamoto, Yoshio Inasawa, Izuru Naito, Masahiko Funada, Naoyuki Natori (Mitsubishi Electric Corp.) SAT2010-36 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Mobile satellite communications systems using 100-beam-class multibeam on-board antenna have been proposed and some of them are already in operation. Such systems can concentrate the resource, such as bandwidth, power, etc., on a specific beam. Therefore, these are effective for emergency operation under natural disaster. For such kind of the on-board antennas, size and power consumption are important to install the antenna in the satellite. In this paper, we study a tradeoff on the excitation condition of the on-board antenna from the view point of size and power consumption. For that purpose, the size is evaluated by the element number of the feed-array. The power consumption is evaluated by that of high power amplifiers (HPAs) connected with the elements, because the power consumption of HPAs dominates that of the satellite payload. In the case of variable amplitude excitation of feed array, the HPAs of some types of output power are necessary. The power consumption of the HPAs can be reduced compared with the case of uniform amplitude excitation. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Multibeam / On-board Antenna / Array-fed Reflector Antenna / Feed Array / Power Consumption / High Power Amplifier / / |
Reference Info. |
IEICE Tech. Rep., vol. 110, no. 174, SAT2010-36, pp. 41-46, Aug. 2010. |
Paper # |
SAT2010-36 |
Date of Issue |
2010-08-19 (SAT) |
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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SAT2010-36 |
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