Computational Aspects of Characteristic Mode Decomposition -- An Overview

TL;DR

This paper reviews computational methods for characteristic mode decomposition, focusing on discretization, modal tracking, validation, and techniques for large and complex problems.

Contribution

It provides a comprehensive overview of transforming characteristic mode theory into practical computational tools, including recent advances and key challenges.

Findings

Discussion of discretization techniques for CMs

Analysis of modal tracking and validation methods

Overview of computational challenges for large and complex problems

Abstract

Nearly all practical applications of the theory of characteristic modes (CMs) involve the use of computational tools. Here in Paper 2 of this Series on CMs, we review the general transformations that move CMs from a continuous theoretical framework to a discrete representation compatible with numerical methods. We also review several key topics related to computational CMs, including modal tracking, dynamic range, code validation, electrically large problems, and non-PEC techniques.