Fast Simulation of Radiation Characteristics for Array Antennas on Electrically Large Platform

This paper presents a hybrid method to quickly analyze the array antennas radiation characteristics on the electrically large platform. This method is based on the full-wave method and high-frequency algorithm, which can effectively avoid the slow solution speed of full wave method. A small array is solved by full-wave method firstly, and then the equivalent radiation fields is constructed. Finally, the influence of the platform on the array antennas is solved by high-frequency algorithm. Furthermore, the number of excited sources in the high-frequency algorithm is reduced by subarray division and subarray beamforming, so as to reduce the computational time. A numerical example is given to verify the rapidity and accuracy of the method.