A closed-loop sidelobe cancellation method based on iteration by using an analog and digital mixed system

Sidelobe cancellation is an effective beamforming method of interference suppression. In this paper, an analog and digital mixed system for sidelobe cancellation is introduced firstly. Then, a closed-loop sidelobe cancellation method based on iteration is proposed by using the previous system. The working principles of this method are derived and the working processes of this method are given in detail. This new method is proved to be available, and it has some advantages over the old ones.