Investigations on Array Pattern Synthesis using Nature Inspired Metaheuristic Algorithms

Linear and circular antenna arrays need to be properly designed for optimization of electromagnetic problem. The design parameters are decided by the specific beam width using firefly algorithm, desired radiation patterns are to be studied for the reduction of beam width and side lobe level simultaneously based on multi objective approach.PSO is used for comparison based on simulation examples. Linear antennas are designed to obtain the source locations in position only synthesis based on FA. Patterns are synthesized using circular arrays to achieve minimum side lobe load and high directivity with constraint of beam width. Performance evaluation of bat, cuckoo search algorithms is level as compared to FA. This method is extended to concentric circular arrays with dipoles as radiating elements, FA is found to be most suitable for development of linear and circular antenna arrays .Procedure of thinning helps in reducing the cost of array designs. This method will find extensive usage in design of array pattern. PSO method of comparison can be supplemented with GA for better results.