Frequency-Domain Bounds for the Multiconductor Telegrapher's Equation

Abstract

We establish mathematical bounds on the chain, ABCD and immittance matrices of a multiconductor transmission line, based on the Telegrapher's equation. Closed-form expressions for those matrices are also presented. Existing results that hold on the imaginary axis are extended to the complex plane, without reliance on a simultaneous diagonalizability assumption that is ubiquitous in the literature. Therefore, the results remain valid even when line symmetry breaks down, as in the case of electrical faults. The system-theoretic properties established here are of general relevance to control, power systems, and signal processing involving multiconductor transmission lines.

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