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Paper Abstract and Keywords
Presentation 2023-11-16 16:25
Extension of Communication Distance via Dielectric-Lens Repeater for OAM Multiplexing Communications
Kaito Uchida, Akira Saitou, Kazuhiko Honjo, Ryo Ishikawa (UEC) MW2023-135
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, a multiplex communication utilizing orbital angular momentum (OAM) of electromagnetic waves has been attracting attention for providing a new multiplexing dimension in wireless communications. In the OAM communication, a multiplex communication with different modes of OAM waves at the same frequency band can be realized without any signal processing, due to the orthogonality between the different OAM modes. The OAM communication system using a circular loop antenna array and a paraboloid can achieve a long-distance communication by focusing the OAM waves. However, the OAM waves from the loop antenna array tend to spread easily, even though those are focused with the paraboloid. So, it is difficult to extend the communication distance. In this study, a dielectric lens has been adopted as a repeater, in order to extend the communication distance. The suitable position of the dielectric lens was estimated based on the parameters such as focal length and curvature of the lens to improve the signal-to-interference ratio (SIR). In the four-channel multiplex communication evaluation at 24.0 GHz with dielectric lens repeater, the measured worst transmission of the signal waves increased by 15.2 dB, and the measured worst SIR value improved by 13.3 dB with a communication distance of 155 cm.
Keyword (in Japanese) (See Japanese page) 
(in English) orbital angular momentum / loop antenna array / dielectric lens / multiple communication / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 268, MW2023-135, pp. 49-53, Nov. 2023.
Paper # MW2023-135 
Date of Issue 2023-11-09 (MW) 
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 MW2023-135

Conference Information
Committee MW  
Conference Date 2023-11-16 - 2023-11-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Nago City Industrial Support Center (Okinawa) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave, etc. 
Paper Information
Registration To MW 
Conference Code 2023-11-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Extension of Communication Distance via Dielectric-Lens Repeater for OAM Multiplexing Communications 
Sub Title (in English)  
Keyword(1) orbital angular momentum  
Keyword(2) loop antenna array  
Keyword(3) dielectric lens  
Keyword(4) multiple communication  
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1st Author's Name Kaito Uchida  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Akira Saitou  
2nd Author's Affiliation The University of Electro-Communications (UEC)
3rd Author's Name Kazuhiko Honjo  
3rd Author's Affiliation The University of Electro-Communications (UEC)
4th Author's Name Ryo Ishikawa  
4th Author's Affiliation The University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2023-11-16 16:25:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2023-135 
Volume (vol) vol.123 
Number (no) no.268 
Page pp.49-53 
#Pages 5 
Date of Issue 2023-11-09 (MW) 

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