Dispersion Analysis of Sectoral Corrugated Waveguides Using Subdomain and Block-Circulant Matrix Formulation

Electronics 2026 Open access

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Authors: Sangkyu Kim
DOI: 10.3390/electronics15030509
Cited by: 0
References: 10

Abstract

This study presents the subdomain method with local coordinates and the mode-matching method to compute the dispersion relations of sectoral corrugated waveguides. Fields are expanded in local Fourier–Bessel series, and boundary conditions are enforced by mode-matching, which produces a block-circulant system matrix. The method reduces computational cost while preserving accuracy, as verified by numerical results.

Fields of Study & Subjects

Microwave Engineering and Waveguides Electromagnetic Scattering and Analysis Electromagnetic Simulation and Numerical Methods

Publication details

Journal / source
Electronics
Volume
15
Issue
3
Pages
509–509
Publication date
25 January 2026
Language
EN