Hello,
In the last spectreRF version available here there is a capability call modulated noise that permit split AM noise of PM noise. I dont know if once the PM noise is available directly from SpectreRF, it is still necessary to estimate the noise passing through a threshold by using the time-domain capability. can I suppose these to noise are equal ?. I mean is the phase noise calculeted by the PM capability equal to the cyclostationary Noise.
Thanks for your help.
Juan

And in spectre in IC5141 and MMSIM60, there is a jitter mode for pnoise, which for driven circuits does a strobed noise at a specified threshold - doing what you want here. For autonomous circuits, it essentially is the same as the modulated noise type for pnoise, and computes jitter from the PM noise.

Regards,

Andrew.