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Paper Abstract and Keywords
Presentation 2023-11-17 14:55
A consideration on a dual-polarized single-layer wideband ring microstrip antenna fed by an L-probe with a via at the center of the radiation element
Takeshi Tomura, Sakuyoshi Saito, Yuichi Kimura (Saitama Univ.) AP2023-154
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents broadband and dual-polarized design of a single-layer ring microstrip antenna (MSA) fed by two L-probes with a via at the center of the radiation element. The proposed antenna consists of a square ring patch as a radiation element and two L-probes to excite two orthogonal modes of the patch. They are arranged on a single-layer dielectric substrate. In order to improve the port-to-port isolation characteristics, a via is introduced at the center of the ring patch. A thick dielectric substrate of 3 mm thickness is used to obtain wideband characteristics. The width of the L-probe and the diameter of the via are tuned appropriately using the electromagnetic simulator ANYSYS HFSS. The simulated result reveals that broadband performance of a fractional bandwidth of 27.1% is obtained at around 12 GHz. Then, a prototype antenna is fabricated. The measured S11 and S22 less than -10 dB are from 10.29 to 13.46 GHz and from 10.12 to 13.27 GHz, respectively. The corresponding fractional bandwidths are 26.7% and 26.9%, respectively. Furthermore, the measured S12 and S21 in the above bandwidths are less than -15.5 dB. It is confirmed by the simulation and the measurement that the proposed single-layer ring MSA fed by two L-probes with a via exhibits good broadband and dual-polarized characteristics.
Keyword (in Japanese) (See Japanese page) 
(in English) microstrip antenna / planar antenna / wideband / dual-polarization / L-probe / via / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 262, AP2023-154, pp. 127-132, Nov. 2023.
Paper # AP2023-154 
Date of Issue 2023-11-08 (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 AP2023-154

Conference Information
Committee AP RCS  
Conference Date 2023-11-15 - 2023-11-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Kumamoto Prefectural Workers' Welfare Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. 
Paper Information
Registration To AP 
Conference Code 2023-11-AP-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A consideration on a dual-polarized single-layer wideband ring microstrip antenna fed by an L-probe with a via at the center of the radiation element 
Sub Title (in English)  
Keyword(1) microstrip antenna  
Keyword(2) planar antenna  
Keyword(3) wideband  
Keyword(4) dual-polarization  
Keyword(5) L-probe  
Keyword(6) via  
1st Author's Name Takeshi Tomura  
1st Author's Affiliation Saitama University (Saitama Univ.)
2nd Author's Name Sakuyoshi Saito  
2nd Author's Affiliation Saitama University (Saitama Univ.)
3rd Author's Name Yuichi Kimura  
3rd Author's Affiliation Saitama University (Saitama Univ.)
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Speaker Author-1 
Date Time 2023-11-17 14:55:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2023-154 
Volume (vol) vol.123 
Number (no) no.262 
Page pp.127-132 
Date of Issue 2023-11-08 (AP) 

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