Multi-feed Reflector Antenna Design using RADS

A multi-feed offset parabolic reflector antenna is designed to achieve contour beam for satellite applications. The design is performed using Reflector Antenna Design Software (RADS), a multiobjective package for realizing shaped beams. The synthesis procedure is briefly explained. A multi-feed reflector antenna is then designed to attain Iran geographic coverage. The goal is to obtain a uniform coverage as well as the maximum gain over the contour. Genetic algorithm (GA) is used to determine the excitation coefficients of array elements. Examining the gain values shows that the gain deviation is less than 1dB over the contour.