Amazon.com: Williams Sound Screw to PCB Rubber Duckie Antenna for T45/T27/T35 Transmitters, 75 Ohms Nominal Impedance : Electronics
13.56MHz RFID Antenna ( In PCB Style)(id:2482688) Product details - View 13.56MHz RFID Antenna ( In PCB Style) from Jinmuyu Electornics Co., Ltd. - EC21