十字形频率选择表面单元的传输系数分析

Analysis on the Transmission Coefficients of Cross Dipole Frequency Selective Surface

传输系数是频率选择表面的一项重要技术指标。简要介绍了利用谱域Galerkin法计算平面频率选择表面传输系数的方法。该方法以平面波谱展开和傅里叶变换为基础,通过矩量法求解频率选择表面电流,进而求得传输系数。对一个十字形频率选择表面的传输系数进行了测量和计算,并将测量结果和计算结果进行了比较,两者吻合得较好,验证了本方法的正确性。

Transmission coefficients is an important index of frequency selective surface. The analysis on the transmission coefficients of frequency selective surface by the spectral domain Galerkin method is introduced briefly, which is based on the outspread of the domain of plane wave and Fourier transform. The surface current and transmission coefficients can be got by this method. The transmission coefficients of a cross dipole frequency selective surface are measured and calculated. A good agreement between them is given, which verifies the analysis of this paper.