Effect of polarized signals on the performance of adaptive antenna arrays

摘要

The polarized electromagnetic waveshave significant impact on the performanceof adaptive antenna arrays. In this paper we investigate the effect of polarized desired andundesired signals on the performance of electronically steered beam adaptive antennaarrays. To achieve this goal, we built an analytical signal model for the adaptive array, inorder to analyze, and compare the effect of polarized signals on the output SINRs (signalto interference plus noise ratios) of single-dipole, and cross-dipole adaptive antenna arrays.Based on a proof-of-concept experiment, and on MATLAB simulation results, it will beshown that cross-dipole adaptive antenna arrays exhibit better performance in comparisonwith single-dipole adaptive antenna arrays in presence of randomly polarized signals.However, single-dipole arrays show better performance under certain operating conditions.