The CUS-01138 is ultra-small, UHF (902-928 MHz) RFID Near-Field patch antenna for close proximity reads, constructed on a double-sided printed circuit board with a 23 inch long RG316 cable and SMA Male connector. The antenna is a linear polarized 1/4 wave planar patch antenna with the radiating surface and the ground plane made from conductive copper whereas the dielectric substrate used is FR-4 (fiber glass epoxy). 

The radiating patch is fed by a microstrip line which is excited by the RG-316 cable. The patch antenna is linearly polarized along the long edge of the PCB. The electrostatic discharge will be grounded through the coaxial cable’s ground.