Beam Compensation of Planar Arrays for Microwave Power Transmission with Pointing Errors

The establishment of the space solar power station (SSPS) provides a way to solve the energy crisis fundamentally, some of the implementation schemes and instructive theory about SSPS are still in the process of research. Due to some uncertainties in the space of the transmitting antenna, the beam pointing of the transmitting antenna will be deviation, resulting in a decrease of wireless power transfer (WPT). In order to solve this problem, we propose a research scheme for beam compensation of the transmitting antenna using non-dominated sorting genetic algorithm-II (NSGA-II). In this process, the paper equivalents the three-objective programming problem as dual-objective programming, which greatly reduces the amount of calculation and improves the calculation speed. The results show that by optimizing the phase of the 8*8 array’s 64 elements, the beam direction adjustment from (1°, 1°) to (0°,0°) is achieved, and the antenna gain is improved by about 0. 5dB. This strategy allows the transmitted power of the antenna to be concentrated as much as possible in the receiving area of the receiving antenna.