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http://dx.doi.org/10.5515/KJKIEES.2008.19.9.978

Design of RFID Metal Tag Antenna with a Minimum Effect according to Attached Metal Surface Size  

HwangBo, Chang (EMW Antenna)
Seo, Seung-Up (EMW Antenna)
Lee, Yun-Bok (EMW Antenna)
Yang, Myo-Geun (EMW Antenna)
Seong, Won-Mo (EMW Antenna)
Publication Information
Abstract
In this paper, we propose a RFID metal tag antenna with a minimum by size of a metal surface to attach. This proposed tag antenna is a patch antenna which is able to stick on metal surface and designed for very slim structure ($119{\times}30{\times}1.6$ mm) antenna that is matched to a chip impedance. This has a loop coupling feeding and consists of a inner radiator and a outer radiator. The outer radiator activates the current to concentrate on the inner radiator regardless of metal size to attach. Also the tag antenna is designed by CST microwave tool and the performance is measured in the anechoic chamber. The optimum antenna has 3.77 % of the matching bandwidth($S_{11}<-10$ dB). The readable range of the tag antenna is about 2.9 m on metal(max. size $700{\times}700$ mm) and 5.5 m in free space according to the measurement results.
Keywords
RFID; Tag Antenna; Antenna;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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