Hi Giuseppe, Could you provide a reference for the original paper (title, authors, when and where it was published)? Then I can check with R&D to see whether it's something that could be considered. Obviously it would be a challenge in the noise modelling in compact device models because these are expressed as a small-signal frequency domain power spectral density; normal noise analysis knows nothing about this cycling of the operating point into different regions. Potentially the periodic analyses could do something about that, but I don't know whether this phenomenon would require additional model parameters to characterise it (as well as code to handle it of course). I've not come across requests to support this phenomenon before (but that may just be that I've not seen those personally; it may have been requested to R&D before though). Having the reference to the published paper would help track down previous requests, and guide any questions I make to the Spectre/SpectreRF R&D teams. Regards, Andrew.
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