Could anyone please help me with this question?
I need to simulate my ring oscillator's output in frequency domain, showing a continuous spectrum waveform as it can be seen from spectrum analyzer in the measurement (PSS->THD is not what I want).Then I can derive Q directly from it.
If there is a detailed guide, that would be very helpful.
Thanks a lot.
thanks a lot for your reply.
noise and discrete harmonics are not what i want. since i need to simulate the output signal bandwidth of close loop ring oscillator, the continuous spectrum plot is needed. could i simulate it using cadence? i have tried pss+pac, following pss oscillator setup(select plus and minus output net as output). but the pac could not recgonize the output net as the output. by the way, i did not put any port at output node since it is oscillator.