Improved Genetic Algorithm approach for Phased Array Radar Design

Genetic Algorithm (GA) methodology was used to design a Phased Array Radar producing three different constrained beam shapes; COSEC² pattern for 30 degree of elevation angle, narrow pencil beam with 2 degree beamwidth and SLL of -40 dB, and a three simultaneously pencil beams. Related software´s code is introduced based on GA approach with some unique improvements in GA to find appropriate feedings of array elements. Suggested design gives enough tolerance to Phase shifters (up to 5 degree), amplitude tapering device, mutual coupling and frequency bandwidth (6%) while satisfying the required patterns of radar in different rotation angles (100 degree).