According to the actual demand of scientific research,a"push sweep"satellite scanning antenna working in C-band is developed in this design.Firstly,based on the principle of"push sweep"satellite scanning antenna,the model of the required circumfocal reflector is optimized,a new type of circular corner reflector is proposed,and the dense feed array is analyzed.The position coordinates of the feed source are obtained through calculation,and the overall model of the reflector antenna is constructed in GRASP.In order to make the main beam of the dense feed array meet the design criteria,the genetic algorithm is designed to optimize the main beam,and the antenna pattern is designed by changing the amplitude and phase values of the feed array.The feed array size of C-band center beam is obtained by simulation and optimization.The test results show that when the antenna beam width is 0.6°,the main beam efficiency is 98.17％,greater than 98％,which meets the design requirements.
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