Robust antenna array processor in the presence of steering angle mismatch and mutual coupling effect

Abstract

Due to the presence of mutual coupling between antenna arrays and antenna steering angle mismatch, the performance of adaptive antenna array processor is degraded highly. For this reason, robustness of the adaptive antenna array processor has become an important issue. The main drawback of conventional loading is so as to there is no clear concept to select loading level according to errors. This paper shows the robustness of this proposed loading technique to cancel interferences and to select loading levels automatically according to error level. This technique also minimizes steering angle mismatch as well as mutual coupling effect in the same algorithm. The performance of the proposed loading technique in the presence of both array imperfections is illustrated using numerical examples and compared with the existing robust processor.