Hi all and Andrew,
I have a question which I think it has been examined thoroughly but I would like to clarify to myself something which is not very clear to me.
The question is:
Which testbench-analysis is most accurate regarding the correctness of starting the oscillator and so satisfying the Barkhausen criteria?
1) Run PSS analysis without any stimulus [such as: a) set initial condition at the differential outputs of the VCO, or b) Power up VCO or c) inserting a time-varying independent source]
and then check the start-up transient behavior using tstab analysis?
OR
2) Run PSS analysis with a stimulus such those that I referred just before?
Thanks , any advice is more than welcome