Abstract

A periodic structure consisting of plane arrays of resistive squares located in a dielectric layer on a metal mirror is considered. On the basis of the solution of the problem of diffraction of a normally incident electromagnetic wave by this structure, the optimal structure parameters that provide for the minimal reflection coefficient in a given wavelength range are calculated. It is shown that, when the number of arrays is up to three, the approximate calculation of the reflection coefficient of a fine-meshed structure can be performed using the method, in which the arrays are matched with films that have the effective surface resistance calculated on the basis of the solution of the quasi-static problem. It is also shown that the optimized investigated structure has the reflection level that is lower than the reflection level of the optimized known structure based on resistive films.

中文翻译：

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基于电阻平方阵列的无线电吸收结构

摘要

考虑了由位于金属镜上的介电层中的电阻性正方形的平面阵列组成的周期性结构。根据这种结构解决法向入射电磁波衍射问题的方法，计算出在给定波长范围内提供最小反射系数的最佳结构参数。结果表明，当阵列的数量最多为三个时，可以使用以下方法对细网状结构的反射系数进行近似计算：将阵列与具有有效表面电阻的薄膜匹配在解决准静态问题的基础上。