Uniform linear arrays include the arrangement of all array elements in one dimension with equal amplitude excitations. Such types of arrays usually have good directivity, narrow beam-width, and they suffer from high sidelobe levels that may cause interference and degrade the overall system performance. The problem of high side lobe levels may overcome by using non-uniformly excited arrays instead of its uniform counterpart. In this paper, the Dolph and Taylor excited arrays are adopted as a non-uniformly excited array. The performance in terms of half power beam width (HPBW), Peak sidelobe level (SLL), directivity (D), and first null-to-null beam width of the uniformly and the two non-uniformly excited arrays are investigated and compared. Simulation results show that the non-uniformly excited arrays can significantly reduce the peak SLL at the cost of lower directivity and wider HPBW. Thus, it is advised to use the non-uniformly excited arrays in the environments that borne high interference pollution.