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http://dx.doi.org/10.5515/KJKIEES.2008.19.11.1265

Radiation Efficiency Improvement of RFID Tag Antenna for Metallic Objects Printed on Lossy Substrate  

Son, Hae-Won (Division of Electronics & Information Engineering, Chonbuk National University)
Choi, Won-Kyu (Electronics and Telecommunications Research Institute)
Choi, Gil-Young (Electronics and Telecommunications Research Institute)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.19, no.11, 2008 , pp. 1265-1271 More about this Journal
Abstract
In this paper, we propose a new antenna design method for RFID tass on metallic surfaces using a low-cost, high-loss substrate such as FR4. The proposed design method highly reduces the substrate loss due to its dielectric loss, and so improves the radiation efficiency of the tag antenna more than double compared with a conventional PIFA(planar inverted-F antenna). The equivalent circuit model of the antenna according to the proposed method was established and its characteristics were analyzed systematically in this paper. The excellency of the proposed design method was verified by the fabrication and measurement of a prototype antenna.
Keywords
RFID Tag Antenna; Metal Tag; Radiation Efficiency; PIFA; Dielectric Loss;
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  • Reference
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