Characteristic Modes of Nonreciprocal Structures

Abstract

The scattering formulation of characteristic mode decomposition is utilized to extend modal analysis to lossless scatterers breaking time-reversal symmetry. This enables characteristic modes analysis on devices containing gyrotropic or moving media. The resulting nonreciprocity introduces features not observed in reciprocal scenarios, such as asymmetric phase progression in characteristic far fields. These new phenomena are carefully discussed using examples of varying complexity. Indicators of nonreciprocity based on modal data are also introduced.

arXiv comment5 pages, 6 figures, 1 table

References in corpus (5)

• Unified Theory of Characteristic Modes: Part I -- Fundamentals
• Computational Aspects of Characteristic Mode Decomposition -- An Overview
• Characteristic Mode Decomposition Using the Scattering Dyadic in Arbitrary Full-Wave Solvers
• Unified Theory of Characteristic Modes: Part II -- Tracking, Losses, and FEM Evaluation
• Iterative Calculation of Characteristic Modes Using Arbitrary Full-wave Solvers