\"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
","abstract_html":"<p>"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.</p> <p>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</p>","abstract_has_math":false,"creators":["Ouyang, Muqi"],"institution":"Missouri University of Science and Technology","degree_name":"Ph. D. in Electrical Engineering","degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":null,"date_issued":"","date_published":null,"updated_at":"2026-07-24T03:18:18Z","subjects":["convergence characteristics","multiconductor transmission-line","reflection","signal integrity","Electrical and Computer Engineering","Engineering"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://scholarsmine.mst.edu/doctoral_dissertations/3229","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Ouyang, Muqi"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:type","label":"Dc Type","values":["Dissertation - Open Access"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph. D. in Electrical Engineering"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Missouri University of Science and Technology"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["convergence characteristics","multiconductor transmission-line","reflection","signal integrity","Electrical and Computer Engineering","Engineering"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholarsmine.mst.edu/doctoral_dissertations/3229"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["\"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
"]},{"key":"dc:title","label":"Title","values":["ACCURACY IMPROVEMENT OF CABLE HARNESS MODELING & ANALYTICAL MODELING OF MULTI-REFLECTIONS IN HIGH-SPEED SIGNAL CHANNELS"]}]}],"canonical_facts":{"dc:creator":["Ouyang, Muqi"],"dc:description.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
"],"dc:identifier":["https://scholarsmine.mst.edu/doctoral_dissertations/3229"],"dc:subject":["convergence characteristics","multiconductor transmission-line","reflection","signal integrity","Electrical and Computer Engineering","Engineering"],"dc:title":["ACCURACY IMPROVEMENT OF CABLE HARNESS MODELING & ANALYTICAL MODELING OF MULTI-REFLECTIONS IN HIGH-SPEED SIGNAL CHANNELS"],"dc:type":["Dissertation - Open Access"],"thesis:degree_name":["Ph. D. in Electrical Engineering"],"thesis:institution_name":["Missouri University of Science and Technology"]},"updated_at":"2026-07-24T03:18:18Z"}