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本文分析了将多极化相控阵天线等效为一个八端网络时,散射矩阵的确定。详细推导了相控阵天线传输系数的计算公式,指出了国外某些文献在这方面的错误。然后,讨论了利用此散射矩阵可以解决的一些工程实际问题。这些问题有确定阵中单元方向图;估价任意极化情况的反射和传输特性(包括极化质量);分析阵前和阵后具有不连续点(或段)对辐射方向图的影响;确定最佳阻抗匹配网络的同时可以考虑极化质量等等。
This paper analyzes the determination of scattering matrix when the multi-polarization phased array antenna is equivalent to an eight-terminal network. The formulas for calculating the transmission coefficient of phased array antenna are deduced in detail, and the errors of some foreign literature in this respect are pointed out. Then, some engineering problems that can be solved by using this scattering matrix are discussed. These problems include determining the array pattern of the array; evaluating the reflection and transmission characteristics (including the polarization quality) of the arbitrary polarization; analyzing the effect of the discontinuity (or segment) on the radiation pattern before and after the array; Good impedance matching network can consider the polarization quality and so on.