The design of end-fire antenna for radio frequency identification (RFID)

The new compact end-fire linear polarized printed antenna for frequency identification (RFID) reader is proposed for ultra high frequency (UHF) radio frequency identification (RFID) system in North America. The proposed planar end-fire antenna using two meandered dipole drivers, a folded reflector and a rectangular reflector are presented. The new antenna uses low-cost fabrication. The advantage of the end-fire antenna with meander dipole drivers compared to the conventional Quasi-Yagi antenna is a reduction in the length of the driver, which allows closer space for RFID reader. The dimension of the antenna is 80 × 59mm
²
. The antenna has maximum gain of 3.6 dB and VSWR better than 2 around the US RFID bands (902-928MHz). We describe the antenna structure and present the comparison of simulation results with experimental data. The proposed antenna is fabricated, and measured reflection coefficient, radiation patterns and gain are presented.