【作者】 赵薇； 杨方兴； 邢晋辉； 司马博羽； 李黄炎； 吴文；

【Author】 Zhao Wei;Yang Fangxing;Xing Jinhui;Sima Boyu;Li Huangyan;Wu Wen;Key Laboratory of Near-Range RF Sensing ICs and Microsystems (NJUST),Nanjing University of Science and Technology;

【机构】 近程射频感知芯片与微系统教育部重点实验室,南京理工大学；

【摘要】 本文设计了一款双层超宽带超材料吸波体,该结构通过将上下两层不同频段加载集总电阻的吸波结构纵向级联,有效拓宽了吸波带宽。所设计的单元结构中心对称,因而具有极化稳定性。仿真结果表明,该结构在3-24.3 GHz频带范围内可实现90%以上吸收率,相对带宽为156%。在入射角30°范围内,可在3-20 GHz频带范围内实现85%以上吸收率。整个吸波体单元大小为0.095λ_L×0.095λ_L,结构厚度为0.087λ_L(λ_L为结构最低吸波频率对应的波长)。更多还原

【Abstract】 In this paper,a double-layer ultra-wideband metamaterial absorber is designed.This structure effectively broadens the absorption bandwidth by longitudinally cascading the absorbing structures with lumped resistors loaded in different frequency bands of the upper and lower layers.The designed unit structure is centrosymmetric,and thus it has polarization stability.The simulation results show that this structure can achieve an absorption rate of over 90% within the frequency band range of 3-24.3 GHz,and the relative bandwidth is 156%.Within the range of an incident angle of 30°,an absorption rate of over 85% can be achieved within the frequency band range of 3-20 GHz.The size of the entire absorber unit is 0.095λ_L×0.095λ_L,and the structural thickness is 0.087λ_L(where λ_L is the wavelength corresponding to the lowest absorption frequency of the structure).更多还原