DocumentCode
1392092
Title
Indirect coupling method for RFID tag antenna design
Author
Chen, Shen-Li ; Mittra, Raj
Author_Institution
Steel & Aluminum R&D Dept., China Steel Corp., Kaohsiung, Taiwan
Volume
46
Issue
1
fYear
2010
Firstpage
8
Lastpage
10
Abstract
Proposed is an indirect coupling method for designing an RFID tag antenna, which can not only achieve broadband operation, but can also conveniently implement a complex conjugate impedance match between an antenna and an RFID chip. An equivalent circuit model of the proposed coupling method is presented to characterise the performance of the antenna. An example is included to demonstrate the coupling method for an antenna with half-power bandwidth of approximately 16% (840-985 MHz), and which covers the entire UHF RFID frequency band. Estimated and simulated results are shown to be in good agreement with measured ones.
Keywords
UHF antennas; equivalent circuits; radiofrequency identification; RFID tag antenna design; UHF RFID frequency band; broadband operation; complex conjugate impedance match; equivalent circuit; indirect coupling method;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2010.2391
Filename
5395537
Link To Document