Fajemilehin, TemitopeOpadiji, JayeolaOlatunji, Samuel2019-06-032019-06-032019http://hdl.handle.net/123456789/2053Radiation in unwanted patterns, energy wastage and reduction are caused by high side lobe levels in a radiation pattern. This in turn affects the overall performance of the antenna. The purpose of this work is to improve the performance of a smart antenna by optimizing the radiation pattern using genetic algorithm. Optimal antenna parameters that would minimize side lobe level were obtained using genetic algorithm. Simulations were carried out to determine the impact of the increase in inter-element spacing on array factor and beamwidth using the optimal antenna parameters. The optimal arrangement of inter-element spacing and number of elements in unequally spaced antenna elements were then considered. The array factor model for a uniform linear array of elements was used with the aim of obtaining the optimum weights that would give a radiation pattern with reduced side lobe level. It was observed from the results for unequally spaced linear arrays, using all the possible configurations, that non-tapered arrangement gave the best improvement in the side lobe level. The outcome of this improvement is an optimized radiation pattern which is expected to aid the reduction of radiated power wasted in the side lobes of linear arrays in antenna systems.enPerformance EvaluationUnequally Spaced Antenna ArrayOptimizing Energy UtilizationArticle