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Paper Abstract and Keywords
Presentation 2023-01-27 10:00
Design of Parasitic-Element Loaded Wideband Filtering Antenna with Unidirectional Radiation Pattern over 30% Frequency Bandwidth
Ken Sakiyama, Masataka Ohira, Zhewang Ma (Saitama Univ.) ED2022-87 MW2022-146
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we propose a new structure of wideband filtering antenna that realizes a very flat in-band gain and unidirectional radiation pattern over 30% frequency bandwidth. In conventional wideband filtering antenna, a fractional bandwidth of over 20% is difficult to realize because a single patch has a lower limit of radiation Q factor. To solve the problem, we propose a new wideband filtering antenna loading a parasitic element. As an example, we design two fifth-order filtering antennas with center frequency of 4.0 GHz and fractional bandwidth of 30% and 40%. The effectiveness of the proposed filtering antenna is verified by comparing the reflection and radiation characteristics between the measured results and the EM simulated ones.
Keyword (in Japanese) (See Japanese page) 
(in English) filtering antenna / radiation Q factor / microstrip antenna / parasitic element / / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 371, MW2022-146, pp. 7-12, Jan. 2023.
Paper # MW2022-146 
Date of Issue 2023-01-20 (ED, MW) 
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)
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Conference Information
Committee MW ED  
Conference Date 2023-01-27 - 2023-01-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MW 
Conference Code 2023-01-MW-ED 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Design of Parasitic-Element Loaded Wideband Filtering Antenna with Unidirectional Radiation Pattern over 30% Frequency Bandwidth 
Sub Title (in English)  
Keyword(1) filtering antenna  
Keyword(2) radiation Q factor  
Keyword(3) microstrip antenna  
Keyword(4) parasitic element  
1st Author's Name Ken Sakiyama  
1st Author's Affiliation Saitama University (Saitama Univ.)
2nd Author's Name Masataka Ohira  
2nd Author's Affiliation Saitama University (Saitama Univ.)
3rd Author's Name Zhewang Ma  
3rd Author's Affiliation Saitama University (Saitama Univ.)
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Speaker Author-1 
Date Time 2023-01-27 10:00:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # ED2022-87, MW2022-146 
Volume (vol) vol.122 
Number (no) no.370(ED), no.371(MW) 
Page pp.7-12 
Date of Issue 2023-01-20 (ED, MW) 

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