An Effective Approach to Scattering From Parallel Cylinders Above a Planar Conducting Surface

Electromagnetic scattering from a set of scatterers located above a planar perfect electric conductor is a canonical problem that is relevant to many scenarios of practical interest. In this work, we focus on the canonical case of arbitrarily shaped cylinders with parallel axes, which is of interest for the analysis and synthesis of metagratings and reconfigurable intelligent surfaces. This scenario is also pivotal for synthesizing such structures through inverse design approaches. In particular, a simple and effective strategy for analyzing the scattering behavior of this kind of structures is proposed. The developed tool is compared with commercial simulation software, showing its ability to provide comparable results with significantly higher computational efficiency.