An Improved PSO Algorithm and Its Application to UWB Antenna Design

An improved particle swarm optimization (PSO) algorithm with a neighborhood-redispatch (NR) technique is presented to design an ultrawideband (UWB) antenna in this letter. Based on the conventional version of PSO algorithm, some new parameters are introduced in the NR-PSO algorithm to improve optimization performance. In order to illustrate the effectiveness of the algorithm in representative topology problems, several benchmark functions are used to test the performance of the improved PSO algorithm. The results show that it is better than the conventional PSO algorithm for multimodal and unimodal functions. Combined with the HFSS solver, one UWB antenna with a respective notched band is designed by using the proposed NR-PSO algorithm. It not only covers the UWB band (3.1-10.6 GHz) and Bluetooth passband (2.40-2.484 GHz), but also realizes a stopband (5.15-5.825 GHz) to avoid potential interferences.