Array pattern null steering using genetic algorithm by element position perturbations

In this paper, the technique for antenna array pattern synthesis with null steering using the genetic algorithms (GA) by element position perturbation is presented. This technique is capable of synthesizing the array pattern with nulls imposed at the directions of undesired interferences while simultaneously maintaining the main beam directed towards the desired signal with prescribed side-lobe level and null depth level. Results show the effectiveness of the proposed technique in comparison with published results. Furthermore, analytic method and gradient descent (GD) techniques were applied to the problem and their results were compared with those of GA.