Antenna pattern synthesis of shaped-beam using a new combined algorithm

This Paper presents a new combined algorithm for shaped-beam antenna pattern synthesis. After main shaped-beam is obtained by DFT synthesis optimization, the side lobe is optimized through genetic algorithm (GA), which greatly improves the optimization speed and effectively avoids the shortcoming of GA. Since only with GA, the optimization converges slowly and optimized shaped-beam fluctuated greatly. A low side lobe square cosec beam antenna array is illustrated. Synthesis results prove the feasibility of the algorithm.