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Paper Abstract and Keywords
Presentation 2023-11-22 09:30
[Short Paper] A Study on Port Arrangement of Analog Beamforming Network Using 3-dimensional Luneburg Lens
Maki Arai, Mikio Hasegawa (Tokyo Univ. of Science) SRW2023-34
Abstract (in Japanese) (See Japanese page) 
(in English) In this report, we propose a method to design an input/output-port arrangement using a directivity correlation matrix for an analog beamforming network with a 3-dimensional Luneburg lens.
To increase the capacity of future wireless communication systems, high-frequency bands such as millimeter waves are useful.
Since the high-frequency bands have high linearity and high propagation loss, it is essential to form high-gain beams using a large number of antenna elements with a phase control feeding circuit, called as a beamforming network.
While increasing the number of antenna elements enables higher gain in a specific direction, the wiring for the beamforming network becomes more complex.
To solve the problem, the authors have proposed a beamforming network using a 3-dimensional Luneburg lens, which provides multiple input and output signals corresponding to each antenna element through a spherical dielectric lens.
The proposed configuration enables simple wiring and beamforming in both horizontal and vertical directions with a single lens.
In this report, we define an objective function that minimizes the angular correlation of beam directivity to derive the optimal port arrangement of the proposed beamforming network.
Furthermore, we evaluate the characteristic of channel capacity in the case of the array antenna with half-wavelength spacing using the proposed beamforming network.
Keyword (in Japanese) (See Japanese page) 
(in English) massive MIMO / beamforming / directivity correlation matrix / channel capacity / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 275, SRW2023-34, pp. 31-31, Nov. 2023.
Paper # SRW2023-34 
Date of Issue 2023-11-14 (SRW) 
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 SRW2023-34

Conference Information
Committee SRW SeMI  
Conference Date 2023-11-21 - 2023-11-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Koganei Campus, Tokyo University of Agriculture and Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) IoT Workshop 
Paper Information
Registration To SRW 
Conference Code 2023-11-SRW-SeMI 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Port Arrangement of Analog Beamforming Network Using 3-dimensional Luneburg Lens 
Sub Title (in English)  
Keyword(1) massive MIMO  
Keyword(2) beamforming  
Keyword(3) directivity correlation matrix  
Keyword(4) channel capacity  
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1st Author's Name Maki Arai  
1st Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
2nd Author's Name Mikio Hasegawa  
2nd Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
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Speaker Author-1 
Date Time 2023-11-22 09:30:00 
Presentation Time 15 minutes 
Registration for SRW 
Paper # SRW2023-34 
Volume (vol) vol.123 
Number (no) no.275 
Page p.31 
#Pages 1 
Date of Issue 2023-11-14 (SRW) 

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