Accurate and efficient incorporation of frequency-domain data within linear and non-linear time-domain transient simulation

An effective method is presented for the representation in (non-uniform) discrete-time of all the S-parameters of an arbitrary linear, time-invariant network specified up to some given maximum frequency. The proposed representation is shown to be highly accurate, compact, stable and derivable using straightforward numerical procedures. Furthermore it is in a form that can be readily incorporated within linear or non-linear time-domain transient simulation, producing results with very high efficiency. Several examples are given providing independent verification of the technique.