COMPARISON OF DIFFERENT METHODS FOR THE EXPERIMENTAL ANTENNA PHASE CENTER DETERMINATION USING A PLANAR ACQUISITION SYSTEM

This work provides the comparison of different methods for the experimental determination of the phase center location of an antenna. The phase center position is determined by means of measured data obtained with a planar scanning system and computed with different methods: a least-squares fit method with and without weighting coefficients and a directivity-based plane wave spectrum (PWS) analysis method. A study of the phase center position for different microwave antennas is provided. The results of the different methods are presented and compared, along with the confidence interval of the phase center values due to the uncertainties of the acquisition system.