Evaluation of the Electric Polarizability for Planar Frequency Selective Arrays

TL;DR

This paper introduces an efficient numerical method to estimate the electric polarizability of 2D periodic metal patch arrays, providing insights into field interactions and aiding bandwidth optimization of frequency selective structures.

Contribution

The paper presents a novel, efficient approach for calculating static electric polarizability of planar arrays, with validation and practical guidelines for design optimization.

Findings

Method shows high numerical efficiency.

Validated against commercial solvers.

Provides design guidelines for bandwidth optimization.

Abstract

This paper presents a method to estimate the static electric polarizability of two-dimensional infinitely periodic metal patch arrays with dielectric substrate. The main features of the proposed method is its numerical efficiency and a deep insight into the physics of the fields interacting with the structure. We provide derivation and analysis of the method, and its verification against two another commercial solver-based approaches for various structure geometries. Additionally, we suggest the guidelines for applying the method to bandwidth optimization of frequency selective structures and illustrate this with an example.