Does anyone have any positive experiences using  QRC RC + SNA (Substrate Noise Analysis) extracted netlists for  real circuit simulations (other than a simple s-parameter point-to-point measurement) such as measuring the VCO output power (dBm)  as related to a  noise source up-mixing with various isolation schemes? While I can see the up-mixing,  what I can't do is correlate the peak osc power nor that the of up converted noise. Not close.  Also, having trouble with convergence. Doing both transient with DFT and HB analysis. With this difficulty, I don't see much value in SNA for circuit simulations. Hopefully, someone has better experiences or suggestions.