A convolution-based approach to the steady-state analysis of nonlinear microwave circuits using SPICE

A convolution-based, black-box approach is proposed to incorporate linear circuit blocks into a nonlinear time-domain analysis program (SPICE) for the purposes of obtaining steady-state results. The technique used is straightforward and offers an effective method for incorporating linear circuits described in the frequency domain into a nonlinear simulation. The technique allows SPICE-users to couple the flexibility and accuracy of general-purpose linear microwave simulators together with SPICE nonlinear device models, and thereby obtain steady-state results which are comparable in accuracy to popular alternative methods such as harmonic balance