一种实用的相控阵近场诊断新方法

A new practical near-field diagnosis technique for phased arrays

提出了一种相控阵天线近场诊断的新方法。传统的方法要诊断出相控阵天线单元的激励 ,必须已知阵列单元的方向图和探头的方向图。文中基于相控阵天线的激励、单元方向图、探头方向图和近场测量数据之间的关系 ,得到了相控阵天线的激励和近场测量数据之间的耦合方程。利用多项式插值 ,在不必已知单元方向图和探头方向图的情况下 。

Traditionally, to diagnose the excitation of a phased array, the radiation patterns of the antenna element and the probe need to been provided in advance. In this paper, a new near-field diagnosis technique for phased arrays is presented. Based on the mathematical relation among the array excitation, the element radiation pattern, the probe radiation pattern and the near-field measurement data, the coupled equations between the array excitation and the near-field measurement data are worked out. By employing the polynomial interpolation, the equations can be used to obtain the element excitation of the phased array antenna without knowing the radiation patterns of the element and probe.