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Paper Abstract and Keywords
Presentation 2020-11-19 13:55
920MHz/5.02GHz Bands Wireless Tag for In-Body/Out-Body Dual-Use RFID System
Bowen Dang, Mizuki Motoyoshi, Suguru Kameda, Noriharu Suematsu (Tohoku Univ.) MW2020-67 Link to ES Tech. Rep. Archives: MW2020-67
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, RFID systems have been widely used in the medical field to ameliorate life of patients. In the field of dental care wireless tags are implanted to dentures and used for confirmation of dentures. Conventional wireless tags are supposed to be used in the in-body environment, and it is difficult to communicate outside the body. If dentures are accidentally swallowed or lost, it is necessary to distinguish between the in-body and out-body and figure out the location of the dentures. We have proposed a RFID system that can communicate in in-body/out-body by using different frequencies. In this paper, since the conventional tag for in-body causes mismatch outside the body, the mismatch is corrected by applying a matching circuit to the IC chip. We proposed a small wireless tag and 920 MHz for in-body and 5.02 GHz for out-body, then prototyped it, and measured the communication distance. It was confirmed that communication was possible up to 30 cm in in-body condition and 27 cm in out-body condition.
Keyword (in Japanese) (See Japanese page) 
(in English) RFID / Denture / Tag / In-Body / Out-Body / BAN / Dual-Band / Wireless Power Transmission  
Reference Info. IEICE Tech. Rep., vol. 120, no. 240, MW2020-67, pp. 12-17, Nov. 2020.
Paper # MW2020-67 
Date of Issue 2020-11-12 (MW) 
ISSN Online edition: ISSN 2432-6380
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 MW2020-67 Link to ES Tech. Rep. Archives: MW2020-67

Conference Information
Committee MW  
Conference Date 2020-11-19 - 2020-11-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MW 
Conference Code 2020-11-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) 920MHz/5.02GHz Bands Wireless Tag for In-Body/Out-Body Dual-Use RFID System 
Sub Title (in English)  
Keyword(1) RFID  
Keyword(2) Denture  
Keyword(3) Tag  
Keyword(4) In-Body  
Keyword(5) Out-Body  
Keyword(6) BAN  
Keyword(7) Dual-Band  
Keyword(8) Wireless Power Transmission  
1st Author's Name Bowen Dang  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Mizuki Motoyoshi  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Suguru Kameda  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
4th Author's Name Noriharu Suematsu  
4th Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2020-11-19 13:55:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2020-67 
Volume (vol) vol.120 
Number (no) no.240 
Page pp.12-17 
Date of Issue 2020-11-12 (MW) 

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