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Paper Abstract and Keywords
Presentation 2022-01-21 12:40
Design of a Circularly-polarized Crossed-slot Square-Arrangement Array Antennas on Alternating-phase Feed Parallel-plate Waveguide
Yuta Ishikawa, Takashi Tomura, Jiro Hirokawa (Tokyo Tech) AP2021-149
Abstract (in Japanese) (See Japanese page) 
(in English) When adjacent rectangular waveguides are alternating-phase fed, the field distribution is maintained even though the structure becomes a parallel-plate waveguide by removing the shared side walls. If the slots are offset from each other at intervals of a half guided wavelength, undesired second-order lobes are radiated, so we propose a structure in which no offset slots are excited by metal posts. A crossed-slot layer is added for circularly-polarization. We introduce a structure in which the equivalent circuit for the element is represented only by a parallel conductance both for the feeding and radiating parts. The input conductance of an array excited by a standing wave is expressed as the sum of the parallel conductances of the elements, which simplifies the design. As a result of the design, the axial ratio is 0.3 dB, the realized gain is 19.7 dBic, and the antenna efficiency is 94.1 % in the 4x4-slot array at the design frequency of 5.8 GHz.
Keyword (in Japanese) (See Japanese page) 
(in English) slot array antenna / alternating-phase feed / parallel-plate waveguide / circularly-polarization / crossed-slot / metal post / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 330, AP2021-149, pp. 80-85, Jan. 2022.
Paper # AP2021-149 
Date of Issue 2022-01-13 (AP) 
ISSN Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee AP WPT  
Conference Date 2022-01-20 - 2022-01-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Kenmin-Fureai-Kaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Radio propagation, Wireless transmission technology, Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2022-01-AP-WPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Design of a Circularly-polarized Crossed-slot Square-Arrangement Array Antennas on Alternating-phase Feed Parallel-plate Waveguide 
Sub Title (in English)  
Keyword(1) slot array antenna  
Keyword(2) alternating-phase feed  
Keyword(3) parallel-plate waveguide  
Keyword(4) circularly-polarization  
Keyword(5) crossed-slot  
Keyword(6) metal post  
Keyword(7)  
Keyword(8)  
1st Author's Name Yuta Ishikawa  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
2nd Author's Name Takashi Tomura  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
3rd Author's Name Jiro Hirokawa  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
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Speaker Author-1 
Date Time 2022-01-21 12:40:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2021-149 
Volume (vol) vol.121 
Number (no) no.330 
Page pp.80-85 
#Pages
Date of Issue 2022-01-13 (AP) 


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