This article proposes a low profile and miniaturized ultra-wideband frequency selective surface (UWB FSS) structure which provides wide bandwidth for shielding applications. A single layer FSS constructed with a simple square loop and cross dipole structure provides bandstop filter response covering high frequencies from 4.85 GHz to 17.23 GHz at 10 dB insertion loss, with a bandwidth of 12.38 GHz and a fractional bandwidth exceeding 112%. The proposed FSS structure also provides excellent polarization independent behavior for angles of incidence up to 30°. A prototype of the proposed FSS is fabricated and the measurement result is compared with the simulation results, and both are in good agreement.

本文提出了一种薄型，小型化的超宽带频率选择表面（UWB FSS）结构，该结构可为屏蔽应用提供宽带宽。具有简单方环和交叉偶极子结构的单层FSS可提供带阻滤波器响应，覆盖带宽为4.38 GHz至17.23 GHz，插入损耗为10 dB，带宽为12.38 GHz，分数带宽超过112％。所提出的FSS结构还为入射角高达30°提供了出色的偏振无关行为。制造了所提出的FSS的原型，并将测量结果与仿真结果进行了比较，两者吻合良好。