Synthesis of Elliptical Array Antenna with Flat Top Beam using Multi-Verse Optimization Algorithm

This article deals with the synthesis of uniformly spaced elliptical array antenna using multi-verse optimization algorithm. Two cases are performed here. In case 1 a uniform elliptical array antenna is optimized to obtain a flat top beam pattern with 20 numbers of array elements and a specific semimajor axis value. In case 2, a 40 element elliptical array is designed with optimized semi-major axis. For both the cases the current excitation amplitude is varied within a specific boundary value to get the flat top shape in the radiation pattern. Case 1 mainly focuses on minimizing the ripple in the main beam and case 2 focuses on reducing the side lobes. The challenge of this study is to produce a flat-top pattern with a negligible amount of ripple in the main beam and lower side lobes which can essentially be applied with benefit of constant intensity over a given cross-section. The study shows the robustness of the algorithm and the usefulness of the considered optimization technique.