The use of reconfigurable intelligent surfaces (RISs) for optimization of propagation channels is one of the most promising and revolutionizing techniques for improving efficiency of the next generation of communications systems. In this article, we combine physical optics approximation and the theory of diffraction gratings to study the scattering properties of finite-size metasurfaces mounted on partially reflecting walls. We consider both reflective and refractive metasurfaces designed to control both the reflection and transmission of waves. We start the analysis under the assumption of uniform, plane-wave illumination, and then discuss nonuniform illuminations by directive antennas.

中文翻译：

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关于现实环境中可重构智能表面的集成：一种估计反射和传输的便捷方法

使用可重构智能表面 (RIS) 优化传播信道是提高下一代通信系统效率的最有前途和革命性的技术之一。在本文中，我们结合物理光学近似和衍射光栅理论来研究安装在部分反射墙上的有限尺寸超曲面的散射特性。我们考虑了旨在控制波的反射和传输的反射和折射超表面。我们在均匀的平面波照明假设下开始分析，然后讨论定向天线的非均匀照明。