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Paper Abstract and Keywords
Presentation 2015-11-04 13:40
Bandwidth Enhancement of Partially Parallel-feeding Travelling-wave Array Using Waveguide Narrow-wall Cavity Slot on Iris in Millimeter-wave Band
Yuichi Hirayama, Kunio Sakakibara, Nobuyoshi Kikuma (NIT) AP2015-117
Abstract (in Japanese) (See Japanese page) 
(in English) The partially parallel-feeding traveling-wave waveguide slot array has an advantage to reduce the frequency dependence of radiation patterns and obtains broadband characteristics. However, the bandwidth of the reflection characteristic of each radiating element with a post is narrow. Then, the partially parallel-feeding travelling-wave array using waveguide narrow-wall cavity slot on iris is proposed to extend the bandwidth of the radiating element. Consequently, the bandwidth of the reflection characteristic and the gain of the entire array becomes wide. 24-element two-line waveguide slot array antenna is designed in the millimeter-wave band. The slots with cavity are cut on the iris of the narrow-wall of the hollow waveguide. The -20dB-bandwidth of the reflection characteristic of each single element was over 7GHz. The bandwidth of reflection lower than -20dB of the entire array was 4.3GHz in contrast to the conventional antenna 0.8GHz. The gain of the broadside direction was higher than 15dBi from 72.0-86.6GHz and peak gain was 20.7dBi.
Keyword (in Japanese) (See Japanese page) 
(in English) Millimeter-Wave / Waveguide Slot Antenna / Cavity Slot / Array Antenna / Broadband / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 286, AP2015-117, pp. 41-46, Nov. 2015.
Paper # AP2015-117 
Date of Issue 2015-10-28 (AP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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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 RCS WPT SAT  
Conference Date 2015-11-04 - 2015-11-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Prefectural Museum & Art Museum 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Antenna and Propagation, Radio Communication, Satelite Communication, Wireless Power Transfer 
Paper Information
Registration To AP 
Conference Code 2015-11-AP-RCS-WPT-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Bandwidth Enhancement of Partially Parallel-feeding Travelling-wave Array Using Waveguide Narrow-wall Cavity Slot on Iris in Millimeter-wave Band 
Sub Title (in English)  
Keyword(1) Millimeter-Wave  
Keyword(2) Waveguide Slot Antenna  
Keyword(3) Cavity Slot  
Keyword(4) Array Antenna  
Keyword(5) Broadband  
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Keyword(8)  
1st Author's Name Yuichi Hirayama  
1st Author's Affiliation Nagoya Institute of Technology (NIT)
2nd Author's Name Kunio Sakakibara  
2nd Author's Affiliation Nagoya Institute of Technology (NIT)
3rd Author's Name Nobuyoshi Kikuma  
3rd Author's Affiliation Nagoya Institute of Technology (NIT)
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Speaker Author-1 
Date Time 2015-11-04 13:40:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2015-117 
Volume (vol) vol.115 
Number (no) no.286 
Page pp.41-46 
#Pages
Date of Issue 2015-10-28 (AP) 


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