In this letter, a single-layer bandpass frequency selective surface (FSS) working at 2.6 GHz is proposed to decrease the interference to communication systems and the cost of processing based on a multimode resonator. A metasurface unit cell is adopted to suppress the grating lobe and achieve miniaturization. Therefore, the performance of the proposed FSS can remain stable under a large oblique incidence. The surface current distribution and equivalent circuit model at each design step are extracted to explain its working principle. Good agreement between the experimental results and the simulated response verifies the feasibility of the proposed FSS.

中文翻译：

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用于5G屏蔽的单层频率选择表面的设计

在这封信中，提出了工作在2.6 GHz的单层带通频率选择表面（FSS），以减少对通信系统的干扰以及基于多模谐振器的处理成本。采用超表面晶胞来抑制光栅波瓣并实现小型化。因此，建议的FSS的性能在较大的斜入射下可以保持稳定。提取了每个设计步骤的表面电流分布和等效电路模型，以解释其工作原理。实验结果与模拟响应之间的良好一致性验证了所提出的FSS的可行性。