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Paper Abstract and Keywords
Presentation 2014-08-29 16:05
Rapid mesurement of Wheeler efficiency using hybrid coupler and phase shifter
Kouhei Watanabe, Nozomu Ishii (Niigata Univ.) AP2014-88
Abstract (in Japanese) (See Japanese page) 
(in English) Wheeler method is known as a simple method of measuring radiation efficiency for small antennas. To reduce uncertainty of measured radiation efficiency, authors have examined a method of measuring reflection coefficients with a 180 degree 3 dB hybrid coupler. A sliding short can be used to change the phase of the reflection coefficient for reference standard, but it takes a lot of time to measure them because of manually adjusting the position of the sliding short. In this paper, we aim to shorten the measurement time by using a phase shifter and short instead of the sliding short and point out a problem.
Keyword (in Japanese) (See Japanese page) 
(in English) Wheeler method / hybrid coupler / phase shifter / vector network analyzer / reflection coefficient / radiation efficiency / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 193, AP2014-88, pp. 91-94, Aug. 2014.
Paper # AP2014-88 
Date of Issue 2014-08-21 (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 AP2014-88

Conference Information
Committee AP SANE  
Conference Date 2014-08-28 - 2014-08-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Niigata University Satellite campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Radar, environmental measurement and general 
Paper Information
Registration To AP 
Conference Code 2014-08-AP-SANE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Rapid mesurement of Wheeler efficiency using hybrid coupler and phase shifter 
Sub Title (in English)  
Keyword(1) Wheeler method  
Keyword(2) hybrid coupler  
Keyword(3) phase shifter  
Keyword(4) vector network analyzer  
Keyword(5) reflection coefficient  
Keyword(6) radiation efficiency  
Keyword(7)  
Keyword(8)  
1st Author's Name Kouhei Watanabe  
1st Author's Affiliation Niigata University (Niigata Univ.)
2nd Author's Name Nozomu Ishii  
2nd Author's Affiliation Niigata University (Niigata Univ.)
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Speaker Author-1 
Date Time 2014-08-29 16:05:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2014-88 
Volume (vol) vol.114 
Number (no) no.193 
Page pp.91-94 
#Pages 4 
Date of Issue 2014-08-21 (AP) 

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