Concentric Circular Array Antenna for Generation of Flat-Top Beam with Design Constrains in Two Principal Vertical Planes

The design and realization of a concentric circular array of isotropic antennas to generate a flat-top shaped beam in two principal vertical planes, is presented in this paper. The proposed design considers several design constraints such as excitation current, inter-element spacing, inter-ring distance in the array structure. The said pattern can be generated with desired side lobe level and ripple in the main lobe with the help of popular multi-verse optimization algorithm.