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厚屏频率选择表面能较好地改善FSS带宽性能,是实现隐身雷达天线罩的有效手段.为了全面掌握厚屏FSS的传输特性,给FSS的工程应用提供可靠依据,本文设计了一种介质-金属加载圆孔单元的厚屏频率选择表面.采用矩量法对此结构进行分析计算,主要研究了加载金属直径、加载介质厚度、电磁波入射角等几个参数对厚屏FSS传输特性的影响规律.仿真实验结果表明:带宽、中心频率及其透过率都对填充介质直径、加载金属直径、加载介质厚度、电磁波入射角和不同排列方式有不同程度的敏感性,可以通过合理调整加载金属直径及加载介质厚度来获得较宽的通带和较高的透过率.这为实现厚屏FSS在曲面隐身雷达天线罩上的应用提供了一种有价值的借鉴.
In order to fully grasp the transmission characteristics of thick-screen FSS and provide a reliable basis for the engineering application of FSS, the design principle of a medium- This paper analyzes and calculates the structure by using the moment method, and mainly studies the influence law of several parameters such as loading metal diameter, loading medium thickness and electromagnetic wave incident angle on the transmission characteristics of thick-screen FSS The simulation results show that the bandwidth, center frequency and transmittance are all sensitive to the filling medium diameter, loading metal diameter, loading medium thickness, electromagnetic wave incident angle and different arrangement methods to some extent, And the thickness of the medium is loaded to obtain a wider passband and higher transmittance, which provides a valuable reference for the application of the thick-screen FSS in the curved radome.