DocumentCode
744164
Title
Stepped Impedance Coupled-Patches Tag Antenna for Platform-Tolerant UHF RFID Applications
Author
Polivka, Milan ; Svanda, Milan
Author_Institution
Department of Electromagnetic Field, Czech Technical University in Prague, Prague, Czech Republic
Volume
63
Issue
9
fYear
2015
Firstpage
3791
Lastpage
3797
Abstract
We introduce a low-profile platform-tolerant UHF radiofrequency identification (RFID) tag antenna composed of a pair of three-step impedance sections of shorted patches coupled by a slot, which is differentially fed by an RFID chip. Its input impedance is analytically investigated using transmission line (TL) modeling. A further set of parametric studies using electromagnetic simulation shows good flexibility for achieving the required complex input impedance for typical UHF RFID chips. The selected antenna topology has been manufactured and measured, and good agreement with the analytical values has been found.
Keywords
Analytical models; Impedance; Patch antennas; Radiofrequency identification; Slot antennas; UHF antennas; Analytical models; RFID; analytical models; patch antenna; radiofrequency identification (RFID); step impedance; transmission line (TL) model; transmission line model;
fLanguage
English
Journal_Title
Antennas and Propagation, IEEE Transactions on
Publisher
ieee
ISSN
0018-926X
Type
jour
DOI
10.1109/TAP.2015.2447034
Filename
7128365
Link To Document