Appropriate random phase feeding technique for Satellite-Communication-On-The-Move

Resolving the side lobe level deterioration of the antenna is a key technology on the satellite-communication-on-the-move (SOTM). Aiming at improving the performance of the multi-panel phased array antenna for SOTM we analyzed its characteristics and the phase quantization error. The appropriate random phase feeding technique based on the genetic algorithm (GA) is proposed. It applied the GA to optimize phase weightings of sub-arrays. And the phase quantization errors are transformed nonperiodic errors. In simulation results compared with rounding method it provides steady and optimal random phase distribution to the multi-panel phased array antennae and it effectively decreases the side lobe level of the antenna pattern.