平面网格和高阻抗表面（包括金属条或贴片）的简单而精确的分析模型
Simple and accurate analytical model of planar grids and high-impedance surfaces comprising metal strips or patches
摘要：
本文介绍了简单的分析公式的网格阻抗的电密集阵列的方形贴片和高阻抗表面的表面阻抗的基础上密集阵列的金属条或方形贴片在接地平面。重点是双入射激励。该方法是基于已知的分析模型的带状网格相结合的近似巴比涅原理位于介电界面的平面网格。从我们的分析所产生的表面阻抗和反射系数的解析表达式进行了彻底的验证，通过全波模拟和公开文献中的特定情况下的可用数据进行比较。其结果可用于设计各种使用人工阻抗表面和人工磁导体的天线和微波或毫米波器件（反射阵列天线、可调谐移相器等），以及用于推导人工（高）阻抗表面的精确高阶阻抗边界条件。作为例子，研究了表面波沿高阻抗表面的传播特性。
英文摘要：
This paper introduces simple analytical formulas for the grid impedance of electrically dense arrays of square patches and for the surface impedance of high-impedance surfaces based on the dense arrays of metal strips or square patches over ground planes. Emphasis is on the oblique-incidence excitation. The approach is based on the known analytical models for strip grids combined with the approximate Babinet principle for planar grids located at a dielectric interface. Analytical expressions for the surface impedance and reflection coefficient resulting from our analysis are thoroughly verified by full-wave simulations and compared with available data in open literature for particular cases. The results can be used in the design of various antennas and microwave or millimeter wave devices which use artificial impedance surfaces and artificial magnetic conductors (reflect-array antennas, tunable phase shifters, etc.), as well as for the derivation of accurate higher-order impedance boundary conditions for artificial (high-) impedance surfaces. As an example, the propagation properties of surface waves along the high-impedance surfaces are studied.
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