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为确定非平面照射下一般形状感性频率选择表面(FSS)的前向散射场,本文探讨了一种局部平面技术(LPT)。为评估LPT精度又给出了一组实验结果。非平面入射场的影响是通过将馈源置于离平面FSS不同距离处的一系列实验结果与LPT数值计算结果进行比较来确定的。通过对一组不同曲率双曲柱面FSS散射场进行实验,研究了表面曲率对LPT模型的限制。通过比较,提出了应用局部平面技术的一些准则。
To determine the forward scattering field of a general shape-sensitive frequency selective surface (FSS) under non-planar illumination, a local planar technique (LPT) is explored. A set of experimental results are given to evaluate LPT accuracy. The effect of non-planar incident fields is determined by comparing a series of experimental results with LPT numerical results of the feed at different distances from the plane FSS. By experimenting on a set of FSS scattering fields with different curvatures, the limitation of surface curvature on the LPT model is studied. By comparison, some guidelines for the application of local planar technology are proposed.