Abstract

The characteristics of an artificial magnetic conductor (AMC) based on an anisotropic composite material consisting of capacitive gratings with metal elements in the form of squares or strips, each of which is shifted by one half of a period relative to two neighboring ones, are studied. Analytical expressions for estimation of the permittivity of the composite material are derived, and the condition for their applicability is formulated and tested with the aid of numerical calculation. It is shown that such an AMC can be used as a small-sized shield with a shielding band of up to 30% when a dipole emitter is located almost on its surface.

中文翻译：

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基于电容光栅各向同性复合材料的人造磁导体屏蔽电磁辐射

摘要

研究了基于各向异性复合材料的人造磁导体 (AMC) 的特性，该材料由电容光栅和方形或条形金属元素组成，每个金属元素相对于两个相邻元素偏移半个周期. 推导了复合材料介电常数估计的解析表达式，并在数值计算的帮助下制定并检验了其适用条件。结果表明，当偶极发射器几乎位于其表面时，这种 AMC 可用作屏蔽带高达 30% 的小型屏蔽。