Optimization synthesis of broadband circularly polarized microstrip antennas by hybrid genetic algorithm

In this paper, the synthesis of a stacked patch antenna for circular polarization is presented. The antenna is analyzed by the full-wave approach based on the method of moments in the spectral domain. In order to find the optimal antenna parameters, a hybrid genetic algorithm that combines a global search of the common genetic algorithm and the efficiency of the direct search method is developed. The experimental results show SWR<2, with an axial ratio lower than 4 dB within 14% bandwidth. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 31: 197–201, 2001.

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