Gain Acquisition of a Standard Horn Antenna Through Experimental Method

Standard horn antennas are widely used in antenna measurement setups for transceiver antennas application, whose absolute gain is necessary to be known in order to finally calculate the gain of antennas under test (AUT). Yet, the gain parameters of these horn antennas are often not provided completely by manufacturers and thus should be measured in our own setup. This paper aims to present an Friis-formula-based experimental method by which the gain of a standard horn antenna operating from 50 GHz to 75 GHz can be acquired. The measured gain parameters of all the standard horns covering the 50 GHz to 325 GHz has been used in our regular tests and proved to be convincible, the correctness of the calculated AUT gain in our antenna measurement setup has therefore been improved.