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基于加载集总元件的磁谐振器设计了一种宽频带、极化不敏感和宽入射角的超材料吸波体.该吸波体的结构单元由加载集总元件的磁谐振器、介质基板和金属背板组成.仿真得到的加载集总元件和不加载集总元件情况下一维阵列结构吸波体的吸收率表明,相对于不加载集总元件的情况,加载集总元件的一维阵列结构吸波体能够实现宽频带吸波.仿真得到的集总电阻和集总电容取不同值时一维阵列结构吸波体的吸收率表明,集总电阻和集总电容都存在一个最佳值,此时吸波体的吸收率最高、吸收带宽最宽.仿真得到的基板有耗和无耗情况下一维阵列结构吸波体的吸收率表明,吸波体内的能量损耗主要源于磁谐振器中加载的集总电阻,与基板的介质损耗关系不大.仿真得到的二维阵列结构吸波体在不同极化角和不同入射角下的吸收率表明,该吸波体具有极化不敏感和宽入射角特性.
Based on the magnetic resonators loaded with lumped elements, a wideband, polarization-insensitive and wide-angle-of-incidence metamaterial absorber is designed.The structural elements of the absorber are composed of a magnetic resonator loaded with lumped elements, a dielectric substrate And the metal backplane.The absorption rate of one-dimensional array structure absorbing body in the case of loaded lumped elements and unloaded lumped elements shows that compared with the case without lumped elements, the one-dimensional loaded lumped elements The results show that the absorptivity of one-dimensional array structure absorber shows that the lumped resistance and the lumped capacitance have the best one The absorbance of the absorber is the highest and the absorption bandwidth is the widest.The absorptivity of the absorber of the one-dimensional array structure with or without consumption of the simulated substrate shows that the energy loss in the absorber mainly comes from the magnetic The total luminosity loaded in the resonator has little to do with the dielectric loss of the substrate.The absorption rate of the two-dimensional array structure absorber at different polarization angles and different incident angles shows that the absorber has the polarization Insensitive and wide Angle characteristics.