Use of Firefly Algorithm for Optimizing Hexagonal Antenna Arrays

The main motive of this paper is to describe the performance of Hexagonal Array (HA) made of isotropic antennas which are uniformly excited and generates directive beam that is of lowest side lobe level (SLL). The firefly algorithm provides an efficient method of optimizing the composite signal of an antenna array. In the present paper algorithm named firefly algorithm is utilized to find best possible excitation in 12-element & 18 element hexagonal array with uniformly distributed antenna elements, such that side-lobe levels (SLL) and first null bandwidth (FNBW) are minimized compared to an antenna configuration with uniform excitation.