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Paper Abstract and Keywords
Presentation 2023-03-17 13:10
[Invited Talk (Young Researcher)] A Study on Decoupling Method Operating at Single and Dual-Frequency for Planar Inverted-F Antennas by Using Parasitic Elements and Bridge Line
Quang Quan Phung, Naobumi Michishita (NDA), Hiroshi Sato, Yoshio Koyanagi (Panasonic), Hisashi Morishita (NDA) AP2022-247
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, Multiple-Input Multiple-Output (MIMO) is known as an elemental technology for next-generation communication, and reduction of mutual coupling between antenna elements (hereinafter referred to as decoupling) has become important. Various methods have been proposed for decoupling between two antenna elements, and the method using a bridge line is considered as one of the simplest methods. However, when the antenna elements are connected by the bridge line, the resonant frequency changes, so it is necessary to readjust the size of the antenna to tune the resonant frequency to the desired frequency. Therefore, it is difficult to apply this method to cases where the size of the original antenna cannot be readjusted due to design constraints. In this study, we propose a decoupling method that does not require readjustment of the size and structure of two planar inverted-F antennas (PIFA) by using a structure that combines parasitic elements and a bridge line. First, we consider the decoupling method operating at a single frequency. In addition, there are cases where MIMO antennas are required to operate at multiple frequencies to support multiple wireless systems at the same time. Therefore, we also consider a decoupling method operating at dual-frequency.
Keyword (in Japanese) (See Japanese page) 
(in English) Parasitic elements / bridge line / decoupling / MIMO / PIFA / small antenna / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 441, AP2022-247, pp. 76-80, March 2023.
Paper # AP2022-247 
Date of Issue 2023-03-09 (AP) 
ISSN 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. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF AP2022-247

Conference Information
Committee AP  
Conference Date 2023-03-16 - 2023-03-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Toyama Prefectural Civic Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2023-03-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Decoupling Method Operating at Single and Dual-Frequency for Planar Inverted-F Antennas by Using Parasitic Elements and Bridge Line 
Sub Title (in English)  
Keyword(1) Parasitic elements  
Keyword(2) bridge line  
Keyword(3) decoupling  
Keyword(4) MIMO  
Keyword(5) PIFA  
Keyword(6) small antenna  
1st Author's Name Quang Quan Phung  
1st Author's Affiliation National Defense Academy (NDA)
2nd Author's Name Naobumi Michishita  
2nd Author's Affiliation National Defense Academy (NDA)
3rd Author's Name Hiroshi Sato  
3rd Author's Affiliation Panasonic System Networks R&D Lab. (Panasonic)
4th Author's Name Yoshio Koyanagi  
4th Author's Affiliation Panasonic System Networks R&D Lab. (Panasonic)
5th Author's Name Hisashi Morishita  
5th Author's Affiliation National Defense Academy (NDA)
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Speaker Author-1 
Date Time 2023-03-17 13:10:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2022-247 
Volume (vol) vol.122 
Number (no) no.441 
Page pp.76-80 
Date of Issue 2023-03-09 (AP) 

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