Field-calibrated Electro-optic Probe for mmWave 5G Communications

We propose a field-calibrated electro-optic probe designed for a millimeter-wave 5G phased array antenna at the Ka-band. The fabricated probe is calibrated through a WR-28 millimeter-wave waveguide in a minimally invasive manner. Using a calibrated probe associated with heterodyning probe control system, the electric field distribution of a 4×1 phased array patch antenna at 28 GHz is presented with absolute V/m.