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中文摘要：
给出了基于三维自由态频率选择表面的阵单元的谱域公式.该公式通过修改原有的二维谱域公式中的谱域格林函数而得到,适用于分析由任意形状的三维自由态频率选择表面的阵单元,按二维空间周期分布构成的频率选择表面,此公式还可以退化成二维谱域公式,用来分析任意形状的二维自由态频率选择表面.最后将实验分析所得的数值结果和实验结果进行比较,符合较好.
英文摘要：
The improved spectral domain formulation was presented, which based on the array elements of three dimension free-standing frequency selective surfaces. This formulation was constructed by modified Green function in two dimension spectral domain formulation and was applicable to analyze free-sanding frequency selective surfaces which composed of three dimension scatter units with arbitrary shape. At the same time, the formulation can be degenerated into two dimension spectral domain form which is applicable to analyze free-sanding frequency selective surfaces which composed of two dimension scatter units with arbitrary shape. This method has been successfully used in analyzing experiment. A comparison of numerical results with experiment data was given, perfect agreement was observed.
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