Patent Document ID: 20090276195
Application ID: 12112966
Patent Flag: 0

Claim One:
1. A method of simulating phase noise in a circuit, the method comprising: generating a system of non-linear equations representing the circuit; constructing an unconditioned system of linear equations from the system of non-linear equations; generating a first plurality of time-domain preconditioned systems of linear equations; generating a time-domain preconditioned approximate solutions for each time-domain preconditioned system of linear equations to form a first plurality of time-domain preconditioned approximate solutions; generating a first plurality of frequency-domain preconditioned systems of linear equations; generating a frequency-domain preconditioned approximate solutions for each frequency-domain preconditioned system of linear equations to form a first plurality of frequency-domain preconditioned approximate solutions; generating an unconditioned approximate solution to the unconditioned system of linear equation; and generating an approximate solution to the system of non-linear equations.