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Paper Abstract and Keywords
Presentation 2010-01-21 13:20
A Study on Enhancement of Frequency Band of 3 Elements Yagi-Uda Antenna with a Narrow Spacing
Kyoichi Iigusa, Hiroshi Harada (NICT) AP2009-162
Abstract (in Japanese) (See Japanese page) 
(in English) The increase of the frequency band of 3 elements Yagi-Uda antenna with narrow spacing is examined by composing element dipoles with two elliptical planes. It is shown that it is possible to make a beam in the multi frequencies or make a tunable antenna by loading variable reactance. Moreover, it is clarified that the frequency in which the gain degradation is less than 1 dB can be enhanced to about 29 percents in fractional bandwidth by employing an open-circuit dipole as a director.
Keyword (in Japanese) (See Japanese page) 
(in English) Yagi-Uda antenna / Wide band / Multi-band / Tunable / Variable reactor / Dipole / Ellipse / Open circuit  
Reference Info. IEICE Tech. Rep., vol. 109, no. 372, AP2009-162, pp. 39-44, Jan. 2010.
Paper # AP2009-162 
Date of Issue 2010-01-14 (AP) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF AP2009-162

Conference Information
Committee AP  
Conference Date 2010-01-21 - 2010-01-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Yamaguchi University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) AP 
Paper Information
Registration To AP 
Conference Code 2010-01-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Enhancement of Frequency Band of 3 Elements Yagi-Uda Antenna with a Narrow Spacing 
Sub Title (in English)  
Keyword(1) Yagi-Uda antenna  
Keyword(2) Wide band  
Keyword(3) Multi-band  
Keyword(4) Tunable  
Keyword(5) Variable reactor  
Keyword(6) Dipole  
Keyword(7) Ellipse  
Keyword(8) Open circuit  
1st Author's Name Kyoichi Iigusa  
1st Author's Affiliation National Institute of Information and Communications (NICT)
2nd Author's Name Hiroshi Harada  
2nd Author's Affiliation National Institute of Information and Communications (NICT)
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Date Time 2010-01-21 13:20:00 
Presentation Time 25 
Registration for AP 
Paper # IEICE-AP2009-162 
Volume (vol) IEICE-109 
Number (no) no.372 
Page pp.39-44 
#Pages IEICE-6 
Date of Issue IEICE-AP-2010-01-14 

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