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设计了一种具有良好带通性能的二阶双通带高阶频率选择表面(FSS)。该FSS结构是在两层介质板上加载三层金属层。利用仿真软件对FSS结构进行计算,并加工实验样件并测试。结果表明:这种三层FSS具有二阶双通带性能,它的3 dB通带分别为10.26~12.24 GHz和16.61~17.49 GHz,两通带平稳光滑,中心插损小,且对不同角度、不同极化方式入射的电磁波保持很好的稳定性。
A second-order double-pass high-order frequency selective surface (FSS) with good band-pass performance is designed. The FSS structure is loaded with two metal layers on three metal layers. The FSS structure is calculated using simulation software and the experimental samples are processed and tested. The results show that the three-layer FSS has the second-order dual passband performance. Its 3 dB passband is 10.26 ~ 12.24 GHz and 16.61 ~ 17.49 GHz, respectively. The two passbands are smooth and smooth with small insertion loss at the center. Electromagnetic waves incident with different polarization methods maintain good stability.