A general-purpose SPICE model for multiconductor transmission lines

This paper presents a new model for the simulation of signal propagation in dispersive, coupled, uniform/nonuniform transmission lines using SPICE. Numerical results are used to demonstrate the validity and versatility of this new model. There are important advantages associated with the availability of a single, general transmission-line model. First and foremost, such a general model, equipped with an a-priori estimate of its accuracy, becomes an invaluable tool for evaluation and verification of other models, especially for those cases that the hybrid approach is used. Second, there is a definitive simplicity associated with the use of a single, general model that is hard to overlook. In essence, a transmission line system becomes simply another element in the circuit simulator, handled the same way no matter what its per-unit-length electrical properties might be