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Planar UHF RFID Tag Antenna With Open Stub Feed for Metallic Objects

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2 Author(s)
Lingfei Mo ; Dept. of Control Sci. & Eng., Zhejiang Univ., Hangzhou, China ; Chunfang Qin

An open stub feed planar patch antenna is proposed for UHF RFID tag mountable on metallic objects. Compared to conventional short stub feed patch antenna used for UHF RFID tag, the open stub feed patch antenna has planar structure which can decrease the manufacturing cost of the tags. Moreover, the open stub feed makes the impedance of the patch antenna be tuned in a large scale for conjugate impedance matching. Modeling and simulation results are presented which are in good agreement with the measurement data. Finally, differences between the open stub feed patch antenna and the short stub feed patch antenna for UHF RFID tag are discussed.

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Antennas and Propagation, IEEE Transactions on  (Volume:58 ,  Issue: 9 )