Doctoral Dissertations

Keywords and Phrases

convergence characteristics; multiconductor transmission-line; reflection; signal integrity

Abstract

"Cable harnesses are widely used in modern vehicles to power electric systems locating at different locations throughout the vehicle and to establish signal channels for data communications between these systems. Generally, a cable harness consists of multiple wires and its geometry can be very complicated, making full-wave modeling and simulation approaches computational resource-intensive. To cut down the computational effort, the hybrid multiconductor transmission-line (MTL) method has been developed, and the generalized MTL (GMTL) method and the multiple scattering (MS) method have been developed to improve the accuracy of the hybrid MTL method. In this research, the convergence issue in the GMTL method near the resonant frequencies of a cable harness system is analyzed, and the solution to improve the convergence characteristics near resonant frequencies is proposed. Also, the MS method has been improved by simplifying the steps of iterative calculations with sub-structure analysis.

In high-speed signal channels, the signal reflections resulting from the discontinuities of characteristic impedances can be the major contributor to the degraded signal quality. In this research, the closed-form formulations to calculate the wave propagations and reflections in a cascaded channel with impedance discontinuities have been developed. With the developed formulations, the propagation paths for each individual ripple in the channel’s single-bit response (SBR) can be backtracked. After identifying the critical ripples in SBR that are responsible for the channel’s degraded signal quality and their propagation paths, the most effective and practical solutions for channel optimization can be determined"--Abstract, p. iv

Advisor(s)

Hwang, Chulsoon
Fan, Jun, 1971-

Committee Member(s)

Kim, DongHyun (Bill)
Drewniak, James L.
He, Xiaoming

Department(s)

Electrical and Computer Engineering

Degree Name

Ph. D. in Electrical Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Fall 2022

Pagination

xii, 89 pages

Note about bibliography

Includes_bibliographical_references_(pages 36, 52, 86)

Rights

© 2022 Muqi Ouyang, All Rights Reserved

Document Type

Dissertation - Open Access

File Type

text

Language

English

Thesis Number

T 12202

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