Hao Yan
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Posts: 6
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hi, all
I think it is common sense that we use pmjitter to simulate VCO phase noise, due to the modulated noise by the oscillator signal, if buffer/divider is followed. But after reading ken's paper about cyclostationary noise, I still have some questions about the pnoise noise type.
1. characterizing the modulated noise at the threshold using pmjitter is for characterizing the cyclostationary noise due to the following stage, like buffer. Can i take it this way? if no, why?
2. if so, i think both fmjitter and modulated can also do the job, for they use the two-sweep approach and one of them is based on correlated type, which is also a way to characterize cyclostationary noise, according to ken's paper in page 20. Am I right? if yes, what is the difference between fmjitter and pmjitter?
3. according to one of ken's post years ago, the dominant source of phase variation is due to oscillator phase noise, which is slow and the same for all signals and can be measured using either sources or time-domain. But in my opinion, the noise here is still cyclostationary noise and should be simulated using time-domain or pmjitter. is it right?
regards, Hao
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