


In this study
we extended the method of envelope simulation to include an AC analysis
directly,
rather then running the transient analysis and collecting the data
pointbypoint.


Another objective was to make the same model
compatible with all three types of analysis: AC, DC, and Transient.


The idea is
to replace the two independent excitation components by a single signal
source that is split into real and imaginary components.


Once this is
accomplished, the splitting network can be linearized to obtain the AC
excitation components U_{1} and U_{2}.


Since the
network itself is linear, it could be left as is.
