Envelope simulation by SPICE-compatible models of linear electric circuitsdriven by modulated signals

SPICE-compatible equivalent circuits were developed to facilitate the analy sis and envelope simulation of electric circuits driven by modulated signal s. The circuits are based on a novel complex phasor-domain transformation. The proposed method facilitates simulation of any general linear circuit dr iven by a modulated signal such as amplitude modulation, frequency modulati on, or phase modulation. Simulation time by the proposed envelope simulatio n is much faster than the full cycle-by-cycle simulation of the original ci rcuit and excitation.