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Paper Abstract and Keywords
Presentation 2010-10-15 13:25
Study of Cross Polarization Discrimination of Dual Circularly Polarized Concentric Array Radial Line Slot Antenna Excited by Rotating modes from Front and Back Sides
Hideki Ueda, Jiro Hirokawa, Makoto Ando (Tokyo Tech), Shuichi Koreeda, Osamu Amano (NT Space) AP2010-84
Abstract (in Japanese) (See Japanese page) 
(in English) A dual circularly polarized radial line slot antenna (DCP-RLSA) using lightweight honeycomb structures as waveguides is investigated. Required specifications are relative bandwidth of 5% (±2.5%), gain of 20dBi, diameter of 8 wavelengths and cross polarization discrimination (XPD) of 30dB. The DCP-RLSA is composed of two layers of radial waveguide connected by a circular E bend and two feeding structures for rotating mode excitations on the front and the back sides. Measured result shows over 20dBi directivities in the required bandwidth of 5%. However, XPDs for operations of the right- and the left-handed circular polarizations are reduced to 13.5dB and 21.3dB, respectively. In this paper, main reason of XPD reduction is a degradation of the rotating mode quality and a reflection of residual power in the RLSA in conclusion.
Keyword (in Japanese) (See Japanese page) 
(in English) Radial Line Slot Antenna / Cual Circularly Polarization / Cross Polarization Discrimination / Rotating Mode / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 223, AP2010-84, pp. 61-66, Oct. 2010.
Paper # AP2010-84 
Date of Issue 2010-10-07 (AP) 
ISSN Print edition: ISSN 0913-5685    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)
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Conference Information
Committee AP  
Conference Date 2010-10-14 - 2010-10-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Iwate Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) AP 
Paper Information
Registration To AP 
Conference Code 2010-10-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study of Cross Polarization Discrimination of Dual Circularly Polarized Concentric Array Radial Line Slot Antenna Excited by Rotating modes from Front and Back Sides 
Sub Title (in English)  
Keyword(1) Radial Line Slot Antenna  
Keyword(2) Cual Circularly Polarization  
Keyword(3) Cross Polarization Discrimination  
Keyword(4) Rotating Mode  
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1st Author's Name Hideki Ueda  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
2nd Author's Name Jiro Hirokawa  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
3rd Author's Name Makoto Ando  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
4th Author's Name Shuichi Koreeda  
4th Author's Affiliation NEC/Toshiba Space Systems (NT Space)
5th Author's Name Osamu Amano  
5th Author's Affiliation NEC/Toshiba Space Systems (NT Space)
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Speaker Author-1 
Date Time 2010-10-15 13:25:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2010-84 
Volume (vol) vol.110 
Number (no) no.223 
Page pp.61-66 
#Pages 6 
Date of Issue 2010-10-07 (AP) 

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