A Recommended Practice for PIM Test of Antennas in Wireless Communication Systems

A test method is proposed to IEEE Standard Association recently for testing of passive intermodulation of base station or satellite antennas. PIM product may deteriorate the performance of sensitive communication systems. An innovative test system and calibration method have been proposed to remedy the defects in the current standards. The proposed anechoic chamber and method are suitable for testing antennas with PIM residual below -150dBc which cannot be measured accurately according to the method defined by the current standards.