SHAPED-REFLECTOR ANTENNA DESIGNS USING PARTICLE SWARM OPTIMIZATION: AN EXAMPLE OF A DIRECT-BROADCAST SATELLITE ANTENNA

摘要

The reflector surface is expanded using the modified Jacobi polynomials, and the expansion coefficients and other antenna parameters compose a solution space to be explored by PSO in a global stochastic evolutionary manner. The conventional weighted aggregation (CWA) method is utilized when multiple objectives are considered. The validity of this technique is verified by an example application, a shaped-reflector antenna for simultaneous reception from multiple satellites for direct-broadcast satellite (DBS) services.