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; COSEC
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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).