I have a frequency multiplier driven circuit (x2) and would like to plot the phase noise for one edge only (as if I used sampled jitter). I have read the thread in
in which it is concluded that the correct way for PSS + pnoise simulation is to use sweep=relative (rel-hr=2 in my case). This is available in noisetype=timeaverage, therefore cannot plot separately raising or falling edge phase noise.
I assume noisetype=sampled (jitter) is not the correct tool here, as it will ignore one rising and one falling edge of the output waveform in the PSS period.
So what is the correct way of getting separate raising/falling edges contributions?
You could use sampled jitter and then plot the edgePhaseNoise - does that do what you want?
I don't think that's accurate as the jitter simulation takes one raising edge and falling edge only, respectively, and ignores the other two, so I get very low phase noise
If you want to plot a freq multiplier and look at noise on an edge, you need to use sampled(jitter). There is an article on https://support.cadence.com that walks you through the process.
so I assume this procedure can be generalised to other multiplication factors by adding the correct dB factor?