Application of evolutionary algorithms in the design of compact multi-band antennas

This paper presents an application of a novel design approach, which combines genetic algorithm, local optimization and frequency reconfigurability. The adopted case study is a quad-band antenna for vehicular GSM/DCS/PCS communications; focus has been put on designing an antenna with good return loss and feasible geometry. The reliability of the performances of the output structure over the whole frequency bands have been checked by use of dedicated simulations. Overall, the designed antenna shows very good return loss over the bands of interest.