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http://dx.doi.org/10.5515/KJKIEES.2007.18.4.398

Design of a Tag Antenna with a Low Performance Distortion from an Attached Surface Material Using the Asymmetric Dual-Arm Dipole Structure  

Kim, Do-Kyun (School of Electronic and Electrical Engineering, Hongik University)
Choo, Ho-Sung (School of Electronic and Electrical Engineering, Hongik University)
Publication Information
Abstract
In this paper we proposed the tag antenna with a low performance distortion from an attached surface material using the asymmetric dual-arm dipole antenna(ADDA) structure. The tag is designed to exhibit low performance changes when the tag is attached on a target object(the medical litter receptacle, ${\varepsilon}_r=1.7,\;tan\;{\delta}=0.002$). Detail design parameters for the proposed antenna are optimized to maintain a good readable range in free-space as well as on a target object. The size of the optimized antenna is $100\;mm{\times}50\;mm$. The antenna shows the matching bandwidth($S_{11}$< -10 dB) of 3.7 % and the radiation efficiency of 80 % at the operating frequency. Finally we confirmed the readable range of the tag antenna by measurement and it shows about 5.3 m in free space and 5.5 m on the target object.
Keywords
RFID; Tag; Asymmetric Dipole; Near Field; Target Object;
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Times Cited By KSCI : 2  (Citation Analysis)
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