Laird Tech S8658PRJ96RTN 10x10 Inch RFID Antenna Circular Polarity Panel - ETSI
Polarization: Circular Right or Left. Antenna Part Number: S8658PL. Antenna Connection: Rev TNC male (others available). Wide range of connector and cable option. Input Impedence: 50 Ohm. Axial Ratio: 2 dB Typical.