Effect of Antenna Position Deviation of Large-scale Phased Array and its Compensation via Retro-reflective Beamforming for SSPS

The effect of antenna position deviations on the beamforming performance of large-scale phased arrays are modeled and simulated for microwave power transmission (MPT). Near-field effects are included in the modeling, so that accurate simulation results can be obtained in the application scenarios of space solar power station (SSPS). Method of calculating field distribution of the microwave power beam over the receiving aperture with typical deformation of the transmitting aperture as well as random position deviation of the antenna modules is developed. Based on the method, numerical results are provided to demonstrate the retro-reflective beamforming performance in compensating the effect of antenna position deviations in a typical SSPS MPT system.