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Paper Abstract and Keywords
Presentation 2012-03-09 10:50
Analysis of Read Range for UHF Passive RFID Tags in Close Proximity Based on Measurement of Forward and Reverse Link Received Power
Hiroyuki Yojima, Yohtaro Umeda (TUS), Osamu Takyu (Shinshu Univ.), Takaaki Okada, Yoshiharu Ishikawa (Toppan Forms) RCS2011-362
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we discuss the change of read range between a UHF passive RFID tag and a reader when a tag is close to another tag because of a power-mismatching arises between a tag’s antenna and a tag’s IC. The read range is determined by the strength of the forward and reverse link. In this research, we calculate received powers of a tag and a reader with states of matching between a tag’s antenna and a tag’s IC. In addition, we measure received powers of a tag and a reader under the same condition of the calculation and clarify which the forward link or reverse link restricts the read range. As a result, it becomes clear that the read range is determined by the forward link finally.
Keyword (in Japanese) (See Japanese page) 
(in English) RFID / UHF / Tag / Reader / Antenna / Impedance / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 451, RCS2011-362, pp. 275-280, March 2012.
Paper # RCS2011-362 
Date of Issue 2012-02-29 (RCS) 
ISSN Print edition: ISSN 0913-5685    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 RCS2011-362

Conference Information
Committee SR RCS SRW  
Conference Date 2012-03-07 - 2012-03-09 
Place (in Japanese) (See Japanese page) 
Place (in English) YRP 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To RCS 
Conference Code 2012-03-SR-RCS-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Analysis of Read Range for UHF Passive RFID Tags in Close Proximity Based on Measurement of Forward and Reverse Link Received Power 
Sub Title (in English)  
Keyword(1) RFID  
Keyword(2) UHF  
Keyword(3) Tag  
Keyword(4) Reader  
Keyword(5) Antenna  
Keyword(6) Impedance  
Keyword(7)  
Keyword(8)  
1st Author's Name Hiroyuki Yojima  
1st Author's Affiliation Tokyo University of Science (TUS)
2nd Author's Name Yohtaro Umeda  
2nd Author's Affiliation Tokyo University of Science (TUS)
3rd Author's Name Osamu Takyu  
3rd Author's Affiliation Shinshu University (Shinshu Univ.)
4th Author's Name Takaaki Okada  
4th Author's Affiliation Toppan Forms Co., Ltd (Toppan Forms)
5th Author's Name Yoshiharu Ishikawa  
5th Author's Affiliation Toppan Forms Co., Ltd (Toppan Forms)
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Speaker Author-1 
Date Time 2012-03-09 10:50:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2011-362 
Volume (vol) vol.111 
Number (no) no.451 
Page pp.275-280 
#Pages 6 
Date of Issue 2012-02-29 (RCS) 

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