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Design of RFID tag antenna for metallic surfaces using lossy substrate

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1 Author(s)
Son, H.W. ; Div. of Electron. & Inf. Eng., Chonbuk Nat. Univ., Jeonju

A novel low-cost antenna design suitable for radio frequency identification (RFID) tags mountable on metallic surfaces is presented. The antenna consists of two shorted patches printed on a lossy FR4 substrate and their radiating edges are facing each other. A tag chip feed is placed between two patches and a stacked shunt capacitor is formed to adjust the antenna impedance. The proposed design reduces the substrate loss and improves the radiation efficiency by more than double compared with a conventional planar inverted-F antenna, which is verified by simulation and measurement.

Published in:

Electronics Letters  (Volume:44 ,  Issue: 12 )