Interference suppression of linear antenna arrays with combined Backtracking Search Algorithm and Differential Evolution

A problem of interference suppression of linear antenna arrays is dealt with in this work. Problem of reduction of sidelobe level relative to main beam is considered. For simplicity antenna arrays are assumed to have ideal elements and hence, mutual coupling effect is neglected. A combination of recently proposed evolutionary algorithm Backtracking Search Algorithm (BSA) with another widely accepted evolutionary algorithm, namely, Differential Evolution (DE) is considered for finding near optimal solutions. It is seen that, combined search outperforms in this interference suppression problem.