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Paper Abstract and Keywords
Presentation 2018-11-15 15:45
Advanced Mode Unity Using Loop Array Proximate to Reflector for OAM Communication
Ryohei Yamagishi, Hiroto Otsuka, Akira Saitou, Hiroshi Suzuki, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2018-102 Link to ES Tech. Rep. Archives: MW2018-102
Abstract (in Japanese) (See Japanese page) 
(in English) Advanced 4-channel multiplexing performance for short- and long-range orbital-angular-momentum (OAM) is demonstrated using circular loop arrays proximate to a planar reflector, where the distance between the array and the reflector is 2 mm to improve the mode unity. To impedance-match measured low input impedances, baluns tailored to each antenna were designed. With these fabricated modules, consisting of a 4-element loop antenna array, baluns and a planar reflector, satisfactory return losses are obtained. In addition, remarkably suppressed transmissions among the transmitting antennas are obtained in favor of the advanced mode unity; the transmission is less than -33.2 dB at 5.5 GHz. With these modules, performance for short-range communication is estimated. The transmission between antennas of the same radius, corresponding to the signal transmission, is always the maximum for each transmitting antenna. The measured transmission isolation, corresponding to the ratio of the signal to the interference, is as large as 21.9 dB. We confirmed that different 64 QAM signals are input to two antennas respectively and that the signals can be separated without signal processing. Performance for long-range communication is also estimated by using paraboloids and measuring equipment for accurate alignments. The measured transmission between antennas of the same radius is also the maximum, and an excellent measured transmission isolation of 23.4 dB is obtained at 5.5 GHz.
Keyword (in Japanese) (See Japanese page) 
(in English) Loop antenna / Orbital angular momentum / Multiplexing / reflector plane / / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 308, MW2018-102, pp. 53-57, Nov. 2018.
Paper # MW2018-102 
Date of Issue 2018-11-08 (MW) 
ISSN Print edition: ISSN 0913-5685  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)
Download PDF MW2018-102 Link to ES Tech. Rep. Archives: MW2018-102

Conference Information
Committee MW  
Conference Date 2018-11-15 - 2018-11-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukue Cultural Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave Technologies 
Paper Information
Registration To MW 
Conference Code 2018-11-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Advanced Mode Unity Using Loop Array Proximate to Reflector for OAM Communication 
Sub Title (in English)  
Keyword(1) Loop antenna  
Keyword(2) Orbital angular momentum  
Keyword(3) Multiplexing  
Keyword(4) reflector plane  
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1st Author's Name Ryohei Yamagishi  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Hiroto Otsuka  
2nd Author's Affiliation The University of Electro-Communications (UEC)
3rd Author's Name Akira Saitou  
3rd Author's Affiliation The University of Electro-Communications (UEC)
4th Author's Name Hiroshi Suzuki  
4th Author's Affiliation The University of Electro-Communications (UEC)
5th Author's Name Ryo Ishikawa  
5th Author's Affiliation The University of Electro-Communications (UEC)
6th Author's Name Kazuhiko Honjo  
6th Author's Affiliation The University of Electro-Communications (UEC)
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Speaker
Date Time 2018-11-15 15:45:00 
Presentation Time 25 
Registration for MW 
Paper # IEICE-MW2018-102 
Volume (vol) IEICE-118 
Number (no) no.308 
Page pp.53-57 
#Pages IEICE-5 
Date of Issue IEICE-MW-2018-11-08 


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