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RFID Tag Antenna Mountable on High-Conductivity and High Permittivity an Materials at UHF Band  

Kwon Hong-Il (Department of Radio Engineering, Kyunghee University)
Lee Bom-Son (Department of Radio Engineering, Kyunghee University)
Publication Information
Abstract
In this paper, we design a UHF band RFID tag antenna which is conjugate matched to an impedance of a chip and also mountable on conductive materials. The proposed tag antenna is very compact($50{\times}30{\times}4mm$) with a modified PIFA shape. The proposed tag antenna has an advantage of easy matching to various chip input impedances. The performance of the antenna is evaluated by monitoring RCS in the reader direction. The RCS of the designed tag is $-10.2\;dBm^2$ when the chip is shorted and is $-21\;dBm^2$ when the chip impedance is a complex conjugate of the antenna impedance.
Keywords
RFID; Tag; RCS; Antenna;
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