Patent ID: 6536026
Filing Date: 2003-03-18
Classification: G06F

Abstract:
A computer implemented method for analyzing an electrical circuit, comprising the steps of:receiving a circuit description and circuit element models; generating circuit equations using the circuit description and the circuit element models; determining a periodic steady-state response of the electrical circuit in the time domain, on a discrete time grid with finite time samples, using the circuit equations and periodic boundary conditions; linearizing the circuit element models about the steady-state response over a predetermined time period; generating a time-varying linear system of equations using the linearized circuit element models and the circuit descriptions: representing a small signal solution to the time-varying linear system of equations, in response to a sine wave input, as an amplitude modulated sine wave; discretizing the time-varying linear system of equations by discretizing only the amplitude modulation of the small signal solution and using an analytic derivative of the sine wave; and performing a time-varying small signal analysis of the electrical circuit using the discretized equations.