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The Characteristics for UHF RFID Tag Antenna Using Planar Dipole Antenna  

Kim Young-Dal (School of Electronic Eng., Kumoh National Institute of Technology)
Lee Young-Hun (School of Electronic Eng., Kumoh National Institute of Technology)
Kwon Won-Hyun (Dept. of Information Chmmunication Engineering, Anyang University)
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Abstract
In this paper, we are proposed the antennas for RFID tag operated at UHF band which are inserted ground plane easy to mount the RFTD chips at the antenna surfaces. In order to implemented antenna for RFID tag which the size is same as conventional name card, the structure of the antenna is meander type, matching method for improvement characteristics of the antenna use T matching method, ground plane is inserted at the antenna substrate fer mounting RFID chips. The substrate size of implementation is $100\times60\;mm^2$ and the FR4 substrate is used. Results of the experiment, the center frequency of the implemented antenna is 427 MHz, -10 dB return loss bandwidth is 8 MHz, maximum return loss is 21 dB, the radiation pattern is omnidirectional. From these results, we are conformed application for UHF RFID tag antenna.
Keywords
RFID Tag Antenna; Tag Matching; Meander Type Antenna; Ground Plane;
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