Array pattern synthesis with null steering using genetic algorithms by controlling only the current amplitudes

In this paper, the technique for antenna array pattern synthesis with null steering using the genetic algorithms (GA) by controlling only the excitati on current amplitudes is presented. This technique is capable of synthesizi ng the array pattern with nulls imposed at the directions of undesired inte rferences while simultaneously maintaining the main beam directed toward th e desired signal with prescribed sidelobe level and null depth level. The p roposed technique is simple and easy to implement compared to conventional array pattern synthesis techniques. The versatility of the proposed techniq ue is also demonstrated by changing the weighting factors of the fitness fu nction constructed for genetic algorithms. Numerical results show the effec tiveness of the proposed technique in comparison with published results.