Time-domain modelling of interconnects with highly oscillatory sources

This paper aims to explore a new approach for time-domain modelling of interconnects with highly oscillatory modulated sources.

The paper uses an asymptotic method in conjunction with the Green’s function of the telegrapher’s equations. The Green’s function is expressed as a series of rational functions in the Laplace domain and are converted to pole-residue form, thereby enabling time-domain implementation.

The results indicate that the method is accurate for modelling interconnects when wide-varying frequencies are present in the sources.

The technique is important in circuit design for assessing signal integrity and in electromagnetic compatibility testing.