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Paper Abstract and Keywords
Presentation 2023-03-17 09:55
Examination of directivity control method and operation frequency for wireless power transmission in indoor manned environment
Tomoyuki Nakasha, Katsutoshi Kawai, Yuuya Tanaka (Kyocera), Mitoshi Fujimoto (Univ. of Fukui) AP2022-242
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, beam wireless power transmission(WPT) systems supply energy for targets located on separate places have been gathering attention. For practical realization of WPT, the use of an array antenna directivity control such as retrodirective, linearly constrained retrodirective etc. is well known to be one of the most effective means to achieve both of
efficiency and human safety in indoor manned environment. On the other hand, there are several choices of an operation frequency, for example, 2.4GHz and 5.7GHz. WPT systems at each operation frequencies are supposed to show different efficiency and human exposure level because of frequency dependent propagation property. For this reason, not only a choice of directivity control methods but also of a choice of an operation frequency is also an important factor. In this study, directivity control methods are evaluated at several frequencies in terms of efficiency and human safety, which contributes to a better choice of an operation frequency.
Keyword (in Japanese) (See Japanese page) 
(in English) Wireless power transmission / Indoor environment / Directivity control / Human safety / Retrodirective / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 441, AP2022-242, pp. 49-54, March 2023.
Paper # AP2022-242 
Date of Issue 2023-03-09 (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 AP2022-242

Conference Information
Committee AP  
Conference Date 2023-03-16 - 2023-03-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Toyama Prefectural Civic Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2023-03-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Examination of directivity control method and operation frequency for wireless power transmission in indoor manned environment 
Sub Title (in English)  
Keyword(1) Wireless power transmission  
Keyword(2) Indoor environment  
Keyword(3) Directivity control  
Keyword(4) Human safety  
Keyword(5) Retrodirective  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Tomoyuki Nakasha  
1st Author's Affiliation Kyocera Corporation (Kyocera)
2nd Author's Name Katsutoshi Kawai  
2nd Author's Affiliation Kyocera Corporation (Kyocera)
3rd Author's Name Yuuya Tanaka  
3rd Author's Affiliation Kyocera Corporation (Kyocera)
4th Author's Name Mitoshi Fujimoto  
4th Author's Affiliation University of Fukui (Univ. of Fukui)
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Speaker Author-1 
Date Time 2023-03-17 09:55:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2022-242 
Volume (vol) vol.122 
Number (no) no.441 
Page pp.49-54 
#Pages 6 
Date of Issue 2023-03-09 (AP) 

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