Design of a Wideband UHF RFID Printed Tag Antenna Using the R2R Process

Abstract

This paper proposes a printed tag antenna for the universal ultra-high frequency (UHF) radio frequency identification (RFID) band (860-960MHz) using the R2R process. To widen impedance bandwidth, a π-shaped matching network is suggested. The overall dimension of the proposed tag antenna is 83.4mm × 30.2mm and it has a gain of over 1dBi for the entire UHF RFID band. The performances of the proposed tag antenna, printed with conductivity silver ink using an R2R process, are compared with those of a copper antenna.