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UHF-RFID tag antenna using T-matching and double-ended rectangular loop techniques for wristband applications
Author(s)
Date Issued
January 1, 2016
Type
Conference Paper
Abstract
This paper presents the UHF-RFID tag antenna applied on a human body (wrist). The proposed tag antenna was fabricated on a thin FR4 substrate (εr= 4.3) with the thickness of 0.25 mm. The T-matching and double-ended rectangular loop techniques are presented to improve an antenna impedance to achieve a matching condition with the NXP G2XL IC chip with the impedance of 21.29 − j191.7 Ω, considering at the center frequency of the standard in Thailand with 922.5 MHz. The proposed tag antenna can apply for the standard of UHF-RFID in Thailand (920–925 MHz) and FCC (902–928 MHz). The radiation patterns of the tag antenna with and without wrist models are unidirectional and omnidirectional, respectively.
Citation
Lecture Notes in Electrical Engineering, 379, 97-107, 2016