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Paper Abstract and Keywords
Presentation 2010-12-17 09:20
Study on antenna Efficiency Improvement of two closely spaced monopole antenna elements.
Hiroshi Sato, Yoshio Koyanagi (Panasonic), Masaharu Takahashi (Chiba University) AP2010-118
Abstract (in Japanese) (See Japanese page) 
(in English) Recent mobile terminals, the introduction of MIMO technology using multiple antennas are examined. Because communicating large data such as music and video are required to ensure better communication quality and capacity. If placed close to the MIMO multiple antennas in one location, Terminals can be gotten reducing antenna volume for improving design. But throughput may be reduced by lower radiation efficiency and higher correlation for antenna’s coupling. The paper [3] showed that How to reduce the antenna coupling of closely 2-ele monopole antennas in 2 frequencies without phase shifter. But higher antenna efficiencies than 1-ele’s are hoped for decoupling antennas. And it is necessary to know adaptive possibility of decoupling technique in other electric small antennas. In this paper, Antenna’s loss factors and how to improve the antenna efficiency using decoupling technique are showed. This decoupling technique was adapted to Small meander line antenna for checking range of applications. And could be adapted confirmed in this antenna.
Keyword (in Japanese) (See Japanese page) 
(in English) Mobile terminal / Antenna / MIMO / Coupling / Correlation / Radiation efficiency / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 347, AP2010-118, pp. 1-5, Dec. 2010.
Paper # AP2010-118 
Date of Issue 2010-12-10 (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 AP2010-118

Conference Information
Committee AP  
Conference Date 2010-12-17 - 2010-12-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) AP 
Paper Information
Registration To AP 
Conference Code 2010-12-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study on antenna Efficiency Improvement of two closely spaced monopole antenna elements. 
Sub Title (in English)  
Keyword(1) Mobile terminal  
Keyword(2) Antenna  
Keyword(3) MIMO  
Keyword(4) Coupling  
Keyword(5) Correlation  
Keyword(6) Radiation efficiency  
Keyword(7)  
Keyword(8)  
1st Author's Name Hiroshi Sato  
1st Author's Affiliation Panasonic Mobile Communications Co., Ltd. (Panasonic)
2nd Author's Name Yoshio Koyanagi  
2nd Author's Affiliation Panasonic Mobile Communications Co., Ltd. (Panasonic)
3rd Author's Name Masaharu Takahashi  
3rd Author's Affiliation Chiba University (Chiba University)
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Speaker Author-1 
Date Time 2010-12-17 09:20:00 
Presentation Time 20 minutes 
Registration for AP 
Paper # AP2010-118 
Volume (vol) vol.110 
Number (no) no.347 
Page pp.1-5 
#Pages 5 
Date of Issue 2010-12-10 (AP) 

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