Hybrid EPSO-DE optimization technique for null steering of circular antenna array by selected position perturbations

A novel null steering method depending on position perturbation of selected elements in circular arrays using new proposed optimization algorithm Hybrid EPSO/DE is presented in this paper. This method intends to reduce the number of perturbed elements in the array to form the null toward the interference direction by getting the optimum solution of the problem using the Hybrid EPSO/DE as optimization tool. The hybridized algorithm has shown to give better result compared with using each algorithm separately on different configurations of position perturbation: angular, radial and arbitrary configurations in circular arrays.