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Numerical experiments of a periodical-patch-loaded absorber by FDTDcomputation

机译:FDTD的周期性贴片吸收器的数值实验计算

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In spite of the reflective or scattering nature of metal, a newtype of microwave absorber which has periodical metal patches on thesurface has been shown to have null reflectivity at a frequency. Severalfeatures of this absorber were found by numerical experiments using theFDTD method. There exist many answers to the dielectric constants of theabsorber and patch structures for null reflectivity at a frequency. Thefrequency of null reflectivity largely shifts with the variation of thepatch structure. A lot of measurements have also qualitatively supportedthese computational results which suggest that the metal patches areconsidered to work as capacitors like artificial dielectrics. Anabsorber of this kind features a versatile design and the possibility ofextreme thinness
机译:尽管金属具有反射或散射特性,但还是有一种新的 微波吸收器的类型,在其上有周期性的金属片 已经证明该表面在一个频率上具有零反射率。一些 该吸收器的特征是通过使用 FDTD方法。对于硅的介电常数有很多答案。 吸收体和贴片结构,可实现某一频率的零反射率。这 零反射率的频率随 补丁结构。在质量上也支持许多测量 这些计算结果表明金属斑块是 被认为可以像人造电介质一样用作电容器。一个 这种类型的吸收器具有通用的设计,并且具有 极薄

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