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Paper Abstract and Keywords
Presentation 2020-09-24 13:50
[Poster Presentation] A Study of a Multi-layer Circularly Polarized Element for a Waveguide Corporate-feed Array
Hiroki Nishimoto, Takashi Tomura, Jiro Hirokawa (Tokyo Tech) AP2020-48
Abstract (in Japanese) (See Japanese page) 
(in English) A 60-GHz band corporate-feed waveguide slot array has been fabricated by diffusion bonding of laminated thin metal plates. Since a degenerated aperture with a height of 5.4 mm is used for the circularly polarized wave radiator, the number of thin plates with a thickness of 0.2 mm to be bonded is 27, which is a large number. Therefore, two layers of degenerated apertures with a thickness of 0.5 mm are placed with air layers to reduce the number of the plates and to avoid bonding. However, the frequency dependences of the reflection and axial ratio are narrower than those of the previous antenna. In this report, a concept for obtaining broadband frequency dependence using a small number of thin plates is presented. Formerly designed by HFSS (FEM), a fast method of method of moments with genetic algorithm will be used for broadband design.
Keyword (in Japanese) (See Japanese page) 
(in English) circular-polarization / 60GHz-band / millimeter wave band / waveguide slot array antenna / method of moments / genetic algorithm / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 171, AP2020-48, pp. 75-78, Sept. 2020.
Paper # AP2020-48 
Date of Issue 2020-09-17 (AP) 
ISSN 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 AP2020-48

Conference Information
Committee MW AP  
Conference Date 2020-09-24 - 2020-09-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave, Millimeter wave, Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2020-09-MW-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of a Multi-layer Circularly Polarized Element for a Waveguide Corporate-feed Array 
Sub Title (in English)  
Keyword(1) circular-polarization  
Keyword(2) 60GHz-band  
Keyword(3) millimeter wave band  
Keyword(4) waveguide slot array antenna  
Keyword(5) method of moments  
Keyword(6) genetic algorithm  
Keyword(7)  
Keyword(8)  
1st Author's Name Hiroki Nishimoto  
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 2020-09-24 13:50:00 
Presentation Time 60 minutes 
Registration for AP 
Paper # AP2020-48 
Volume (vol) vol.120 
Number (no) no.171 
Page pp.75-78 
#Pages 4 
Date of Issue 2020-09-17 (AP) 

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