An algorithm of the sidelobe level optimization for the dual shaped symmetric reflector antenna

The algorithm of the sidelobe level optimization for the dual shaped symmetric reflector antenna with the aperture diameter D>20/spl lambda/, is presented. It is based on the method of the far-field pattern estimation by the aperture distribution. The maximal aperture efficiency is the criterion of the aperture distribution optimization on the condition that the far-field pattern estimation answers to recommendations ITU-R. Optimization parameters are defined by the function of the aperture distribution that is described as analytical function with shadow area at the center aperture, uniform area and transition regions.