An Efficient Co-Optimized Approach to Reduce Antenna RCS by Differential Evolution Algorithm

An efficient approach to reduce antenna radar cross section (RCS) is proposed in this paper. A wideband Vivaldi antenna is adopted for demonstration, the shape of which is reformed by the differential evolution algorithm (DEA) under co-optimization of Python and HFSS. By utilizing this simple and efficient design approach, no additional structure is required for RCS reduction while other electromagnetic performance of the antenna can be well maintained. Results show that the designed Vivaldi antenna achieves a good RCS reduction from 4 GHz to 9 GHz, validating the possibility and feasibility of this method for further radar target application.