Revista: IEEE Transactions on Microwave Theory and Techniques. Vol. 40. No. 5. Pp. 938-947. May 1992.

Autores: José I. Alonso, José Borja and Félix Pérez

Branin's method of characteristics has been extended to obtain a universal equivalent model for lossy and dispersive transmission lines. Existing CAD software packages, such as SPICE, can be used for this implementation. The starting point for obtaining the model is the analog filters that approximate the characteristic impedance Z/sub 0/(s) and the propagation function F(s)=exp(- gamma l) of the transmission line. The circuits are synthesized using conventional network synthesis techniques. An examination of the validity of the model is carried out by analyzing an example of RLCG lines driven by bipolar logic gates and the distortion of a DC Gaussian pulse as it propagates along a microstrip line.