Transmission line model with frequency-dependent and nonuniform parameters in frequency and time domain

The paper presents a fast and effective method of modeling a nonuniform and dispersive interconnect by means of S-parameters. The paper presents an approach based on the method of successive approximations, but taking into account the dependence on the frequency of line parameters. The concept is to use a rational approximation of the per-unit-length parameter of the line calculated for each frequency. An example of the Bessel dispersive transmission line has been considered.