介质材料对频率选择表面传输特性的影响

通过理论计算和实验验证分析了介质材料对频率选择表面传输特性的影响规律,讨论了蒙皮的厚度、介电常数,芯层厚度、介电常数四个因素对FSS的通带位置、宽度、损耗的影响。结果表明,蒙皮和芯层厚度增厚会使通带位置向低频移动,厚度减小通带位置向高频移动;蒙皮和芯层介电增大会使通带位置向低频移动,介电减小通带位置向高频移动。并测试了同样结构的FSS平板传输特性,理论分析和实验结果一致性较好。

Influence of Dielectric Materials on Transmission Properties of Frequency Selective Surface

In this paper, influences of the dielectric materials on the transmission properties of frequency selective surface are studied with theoretical calculation and experimental verification. The frequency properties, including resonance frequency, transmission bandwidth, and transmission loss, of the FSS with the skin and core of different dielectric constants, different thickness are discussed. The result shows that raising the thickness of the skin and core layer will make the bandpass position shifts to low frequency, reducing the thickness will make the the bandpass shifts to higher frequency. Raising the dielectric constant of the skin and core layer will make the bandpass position shifts to low frequency, reducing the dielectric constant will make the the bandpass shifts to higher frequency. And the transmission properties of the sample flat, which has the same structure the discussed FSS, are tested. Theoretical analysis and experimental results are in good consistency.