Research on Modeling and Principle Verification of Full-duplex Technology Based on Phased Array

For full-duplex applications of phased array systems, the self-interference/mutual interference coupling link has complex characteristics and high self-interference power. The transmission and reception characteristics of a full-duplex channel were studied by using a phased array. In the integrated spatial beamforming interference suppression, RF interference cancellation and digital adaptive filtering processing, a multi-level comprehensive architecture, method and model of RF interference signals based on phased array system is proposed. Through principle test and simulation verification, the signal-to-interference and noise ratio is improved by 13dB for the reception matching processing of the desired signal. Therefore, in full-duplex applications of phased array systems, this method and the corresponding optimization model can effectively reduce the power of RF interference signals to support the simultaneous application of multiple functions.