Transient analysis of lossy multiconductor transmission lines in nonlinear circuits
Blazeck, Thomas Stephan
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https://hdl.handle.net/2142/23555
Description
Title
Transient analysis of lossy multiconductor transmission lines in nonlinear circuits
Author(s)
Blazeck, Thomas Stephan
Issue Date
1989
Department of Study
Engineering, Electronics and Electrical
Discipline
Engineering, Electronics and Electrical
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Electronics and Electrical
Language
eng
Abstract
Using the frequency-dependent transmission line parameters, two time-domain models are developed for lossy multiconductor transmissions lines. It is shown that the endpoints of a lossy multiconductor line can be represented at each time step by discretized Thevenin or Norton equivalent circuits. Because these models contain only lumped elements, they can be easily implemented in a general circuit analysis program for simulating the transient responses of nonlinear circuits. The analysis procedure developed makes exclusive use of infinite-line impulse responses in the formulation of the time-domain models. Because infinite lines are matched, there are no reflections in the impulse responses. The result is that these impulse responses are relatively short.
A number of simulation examples are presented exercising the lossy multiconductor transmission line model in circuits that contain linear and nonlinear elements. Of particular interest is the interconnection of high-speed digital circuits by lossy multiconductor transmission lines containing discontinuities. Results are shown for the most general case of lossy multiconductor transmission lines with discontinuities and nonlinear terminations in which the modal transformation matrices are necessarily frequency dependent. In addition, simulation results show good agreement with experimental results for both lossless and lossy multiconductor transmission lines.
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