STEADY-STATE SOLUTION OF NONLINEAR CIRCUITS BY ASYMPTOTIC PERIODIC WAVE-FORM EVALUATION

A new numerical procedure called asymptotic periodic waveform evaluati on (APWE) for Ending the steady state solution of nonlinear circuits d riven by one tone periodic input signal is presented. APWE starts by c onstructing a virtual system which gives the same periodic steady stat e waveform as the original system's but with a shorter transient durat ion. Thus the periodic steady state (PSS) response can be obtained by simply performing transient analysis of the newly derived system for a few periods. An efficient method for solving the nonlinear equations occurred during the transient analysis is presented. To improve the co nvergence rate of PSS waveform, APWE is combined with extrapolation me thod. Some simulation results are shown.