EIRP and C/I analysis of multibeam active phased array transmit antennas for communication satellites

摘要

A comprehensive model was developed to analyze performance of a multibeam active phased array antenna used in a high traffic capacity, TDMA satellite communications system. The model includes the effects of intermodulation distortion, sidelobe level interference, partial array failure, pointing errors, and amplitude and phase errors. The performance of a Ka-Band 64 beam satellite antenna system based on a modular tile approach was assessed in terms of C/I and EIRP performance. The results presented show the graceful degradation characteristics in high communication traffic applications in terms of partial array failures and array errors.