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Paper Abstract and Keywords
Presentation 2026-09-09 10:20
Design of Variable Multi-Band Conformal RIS Using Flexible Printed Circuits
Kanata Okada, Taisei Urakami (NIT, Kagawa College), Tamami Maruyama (HIT), Akira Ono (NIT, Kagawa College), Na Chen (USTB), Minoru Okada (NAIST) AP2026-71
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we propose a novel conformal reconfigurable intelligent surface (CRIS) whose reflection direction, operating frequency band, and physical shape can all be controlled. The reflection direction and operating frequency band can be adaptively adjusted by varying the reverse bias voltage applied to a varactor diode integrated into the unit cell. By employing a flexible printed circuit (FPC) as the substrate of the CRIS, the physical shape of the reflector can be arbitrarily modified, enabling installation in diverse environments without geometric constraints. The proposed CRIS is designed on the basis of the generalized Snell’s law. As a result, it can adaptively control both the reflected beam at the operating frequency band, even when its physical shape is altered.
Keyword (in Japanese) (See Japanese page) 
(in English) Metasurface Reflector / Reconfigurable Intelligent Surface / Electromagnetic Field / / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 172, AP2026-71, pp. 6-11, Sept. 2026.
Paper # AP2026-71 
Date of Issue 2026-09-02 (AP) 
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 AP2026-71

Conference Information
Committee MW AP  
Conference Date 2026-09-09 - 2026-09-11 
Place (in Japanese) (See Japanese page) 
Place (in English) Ishikawa Prefectural Library 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave, Millimeter wave, Radio propagation, Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2026-09-MW-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Design of Variable Multi-Band Conformal RIS Using Flexible Printed Circuits 
Sub Title (in English)  
Keyword(1) Metasurface Reflector  
Keyword(2) Reconfigurable Intelligent Surface  
Keyword(3) Electromagnetic Field  
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1st Author's Name Kanata Okada  
1st Author's Affiliation National Institute of Technology, Kagawa College (NIT, Kagawa College)
2nd Author's Name Taisei Urakami  
2nd Author's Affiliation National Institute of Technology, Kagawa College (NIT, Kagawa College)
3rd Author's Name Tamami Maruyama  
3rd Author's Affiliation Hiroshima Institute of Technology (HIT)
4th Author's Name Akira Ono  
4th Author's Affiliation National Institute of Technology, Kagawa College (NIT, Kagawa College)
5th Author's Name Na Chen  
5th Author's Affiliation University of Science and Technology Beijing (USTB)
6th Author's Name Minoru Okada  
6th Author's Affiliation Nara Institute of Science and Technology (NAIST)
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Speaker Author-1 
Date Time 2026-09-09 10:20:00 
Presentation Time 20 minutes 
Registration for AP 
Paper # AP2026-71 
Volume (vol) vol.126 
Number (no) no.172 
Page pp.6-11 
#Pages 6 
Date of Issue 2026-09-02 (AP) 

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