The polarization of the electromagnetic waves impinging on adaptive antenna arrays has a significant impact on their performance. The effects of desired and undesired polarized signals and mutual coupling on the performance of adaptive antenna arrays with an electronically steerable beam are studied based on the ratio of the output signal to the interference plus noise. The performance of adaptive antenna arrays composed of single- versus cross-dipole antenna elements is studied to illustrate the effect of signal polarization. The experimental and simulation results show that, for randomly polarized signals, adaptive antenna arrays using cross-dipole elements provide better performance compared with those using single dipoles. However, if the desired signal polarization is well known, single-dipole antenna arrays offer better performance.

撞击在自适应天线阵列上的电磁波的极化对其性能有重大影响。基于输出信号与干扰加噪声之比，研究了期望的和不期望的极化信号以及相互耦合对带有电子可控波束的自适应天线阵列性能的影响。研究了由单偶极子天线和交叉偶极子天线元件组成的自适应天线阵列的性能，以说明信号极化的影响。实验和仿真结果表明，对于随机极化的信号，使用交叉偶极子元件的自适应天线阵列与使用单个偶极子的天线阵列相比具有更好的性能。但是，如果所需的信号极化是众所周知的，则单偶极天线阵列可提供更好的性能。