Integrated design and research of novel Ka-band circular polarized monopulse interrogator array antenna

This paper presents a scheme of novel electrically large monopulse circularly polarized interrogator array antenna, which works at Ka-band. A hybrid algorithm based on MoM (Method of moment) for electrically large array design is studied, in which the function of optimizing the puncture rate is contained. A novel 2times2 circular polarized sub-array is designed, which improves the axial ratio performance of whole array. The computation results of antenna performance have achieved the anticipated goal, and been verified by experiment.