Determination of Harmonic Levels in Nonlinear Networks by Computer Simulation

A method of accurately determining harmonic levels in nonlinear networks with periodic excitation is described. Timedomain omain transient analysis is combined with ac steady-state analysis using standard computer-simulation circuit-analysis programs to evaluate low levels of harmonic distortion with appreciably reduced numerical error. The technique is useful in a variety of applications such as mixers, rectifiers, power amplifiers, and switching power supplies.