Transients in lossy multiconductor lines are analyzed by the Transmission Line Model (TLM) assuming a quasi-TEM propagation. Voltage and current waves propagation is described by integrodifferential equations with variable coefficients, where a convolution integral between the transient impedance and the time derivative of the current is used to model the skin effect in the conductors.The resulting equations system is solved by the Finite Difference-Time Domain (FD-TD) method. A new algorithm for the recursive calculation of the convolution integrals is proposed. Distributed nonuniformities, due to line parameters variation, and lumped nonuniformities, due to loads, junctions and discontinuities are considered.
FD-TD analysis of nonuniform multiconductor lossy lines
Feliziani, M.
1993-01-01
Abstract
Transients in lossy multiconductor lines are analyzed by the Transmission Line Model (TLM) assuming a quasi-TEM propagation. Voltage and current waves propagation is described by integrodifferential equations with variable coefficients, where a convolution integral between the transient impedance and the time derivative of the current is used to model the skin effect in the conductors.The resulting equations system is solved by the Finite Difference-Time Domain (FD-TD) method. A new algorithm for the recursive calculation of the convolution integrals is proposed. Distributed nonuniformities, due to line parameters variation, and lumped nonuniformities, due to loads, junctions and discontinuities are considered.Pubblicazioni consigliate
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