Large array synthesis using Invasive Weed Optimization

Abstract

This paper discusses the application of nature-inspired optimization techniques for the synthesis of large arrays of antennas. Here the technique of Invasive Weed Optimization (IWO) is chosen for the optimization of the amplitude and/or phase of the excitation at the individual elements of the array. The result of such optimization is performance improvement of the array in terms of minimization of sidelobe levels (SLL) and positioning of nulls at desired locations as compared to the uniformly excited linear array. It is seen that even large arrays of 100 elements can be effectively synthesized using this proposed algorithm.