Figures of a dual-polarized frequency selective rasorber withwide transmission band

We proposed a novel and simple dual-polarized frequency-selective rasorber (FSR) which has a wide absorption band including a wide transmission band. The structure consists of a lossy frequency-selective surface (FSS) constructed with metal rings connected by center loaded strips as the top layer, and a broad band transmission FSS at the bottom, while the two layers are separated by air. To clearly understand how it works, detailed equivalent circuit was derived to accurately predict the frequency responses of the structure. To validate our proposal, a prototype was fabricated and measured. In this data file, simulation results obtained by commercial software Ansys HFSS and measurement results are listed. The measured results are in good agreements with simulations under normal incidence, which indicates a broad absorption bandwidth of 80% that from 3.40 GHz to 8.16 GHz; in the meantime, a wide transmission band with an insertion loss of less than -1.25 dB is ranging from 9.03 GHz t...我们提出了一种新颖且简洁的双极化频率选择吸透结构（frequency-selective rasorber，FSR），该结构兼具宽吸收频段与宽透射频段。该结构的顶层为采用中心加载条连接金属环构成的有耗频率选择表面（frequency-selective surface，FSS），底层为宽带透射频率选择表面，两层之间以空气介质分隔。为清晰阐明其工作机理，我们推导了详细的等效电路模型以精准预测该结构的频响特性。为验证所提方案的有效性，我们加工并测试了一块样机。 本数据文件中收录了通过商用软件Ansys HFSS仿真得到的结果与实测结果。在正入射条件下，实测结果与仿真结果吻合良好，表明该结构的吸收带宽可达80%，覆盖频段为3.40 GHz至8.16 GHz；同时，其在9.03 GHz至……的宽透射频段内，插入损耗小于-1.25 dB。