Work

Scattering-Based Characteristic Mode Theory for Structures in Arbitrary Background: Computation, Benchmarks, and Applications

Year: 2024

Type: article

Abstract: This article presents a novel approach for computing substructure characteristic modes. This method leverages electromagnetic (EM) scattering matrices and spherical wave expansion to directly decompose EM fields. Unlike conventional methods that rely on the impedance matrix generated by the method of moments (MoMs), our technique simplifies the problem into a small-scale ordinary eigenvalue problem, improving numerical dynamics and computational efficiency. We have developed analytical substructure characteristic mode solutions for a scenario involving two spheres, which can serve as benchmarks for evaluating other numerical solvers. A key advantage of our method is its independence from specific MoM frameworks, allowing for the use of various numerical methods. This flexibility paves the way for substructure characteristic mode decomposition to become a universal frequency-domain technique.

Source: IEEE Transactions on Antennas and Propagation

DOI: 10.1109/tap.2024.3450298

Authors: Chenbo Shi, Jin Pan, Xin Gu, Shichen Liang, Le Zuo

Institutions: University of Electronic Science and Technology of China, China Electronics Technology Group Corporation

Language: English

Topic: Electromagnetic Scattering and Analysis

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Chinese Aeronautical Establishment

Award: G6455782519