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应用模匹配方法,研究了关于中心层面对称的双层频率选择表面(FSS)的传输特性。讨论了各介质层厚度改变对频率选择表面频响特性的影响,指出通过修正双层FSS的有关介质参数,可以有效地改善传输带宽的稳定性并缩小传输曲线谐振区的深沟。
The transmission characteristics of the double-layer frequency selective surface (FSS) symmetrical on the center plane are investigated by using the mode matching method. The influence of the thickness change of the dielectric layers on the frequency response of the frequency selective surface is discussed. It is pointed out that the stability of the transmission bandwidth can be effectively improved and the deep trench of the resonant region of the transmission curve can be narrowed by modifying the relevant parameters of the double FSS.