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首页> 外文期刊>Antennas and Propagation Magazine, IEEE >Efficient Analysis of Frequency-Selective Surfaces by a Simple Equivalent-Circuit Model
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Efficient Analysis of Frequency-Selective Surfaces by a Simple Equivalent-Circuit Model

机译：简单等效电路模型对频率选择表面的有效分析

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摘要

The transmission and reflection properties of frequency-selective surfaces (FSSs) are evaluated through a simple and accurate first-order circuit approach. The approximate analysis, based on the parallel between real structure and a lumped-LC-network counterpart, is also useful for acquiring physical insights into the working principles of frequency-selective surfaces. The first part of the paper describes a technique for computing lumped parameters of the most common frequency-selective-surface elements. The L and C parameters representing a given frequency-selective-surface element are derived only one time, at normal incidence, and stored, so as to form a database. The second part of the paper deals with the derivation of simple relations allowing the generalization of the stored LC couples in the case where the frequency-selective surface is printed or embedded in arbitrarily thick dielectric slabs, when the incident angle is varied from normal incidence, or if a different periodicity with respect to the reference periodicity is adopted. The generalized lumped parameters are included in an equivalent transmission line for computing the response of generic frequency-selective-surface configurations with no additional computational effort. The results obtained through the simplified model presented here are verified by a careful comparison with MoM simulations.
机译：通过简单，准确的一阶电路方法评估频率选择表面（FSS）的透射和反射特性。基于真实结构和集总LC网络对应物之间的平行度的近似分析，对于获取对频率选择表面工作原理的物理见解也很有用。本文的第一部分描述了一种用于计算最常见的频率选择表面元素的集总参数的技术。代表给定的频率选择表面元素的L和C参数仅在法向入射时一次导出并存储，从而形成数据库。本文的第二部分讨论了简单关系的推导，当频率选择表面被印刷或嵌入任意厚的介电平板中时，当入射角从法线入射变化时，可以简化存储的LC对的一般关系，或者，如果采用相对于参考周期性的不同周期性。通用集总参数包含在等效传输线中，无需额外的计算工作即可计算通用频率选择性表面配置的响应。通过与MoM仿真进行仔细比较，可以验证通过此处介绍的简化模型获得的结果。

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