Eye-shaped Segmented Reader Antenna for Near-field Uhf Rfid Applications
نویسندگان
چکیده
An eye-shaped segmented (ESS) antenna is presented for ultra-high frequency (UHF) near-field radio frequency identification (RFID) applications. The proposed antenna shows in-phase current even though the perimeter of the eye-shaped loop is comparable to the operating wavelength. The ESS antenna is fabricated on a FR4 printed circuit board (PCB) and embedded in a metal cavity with an overall size of 250 × 180 × 50mm3. The measured bandwidth is around 11MHz (860–871 MHz) under the condition of VSWR less than 2.0, which covers the Europe standard (865MHz–868 MHz) and agrees well with the simulated results. Finally, as a reader antenna in the RFID system, the measured read distance and read width can achieve 16.1 cm and 8 cm, respectively. The ESS antenna is desirable for UHF near-field RFID reader applications.
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