AnalogAroma wrote on Sep 13^th, 2006, 10:30am:

Hi,
When you say spectre, i guess it depends more actually on the model used. I don't think SGP or standard VBIC have any correlation of base shot noise to collector shot noise. I think i have read somewhere that the phillips model (Mextram) has it (physical charge partitioning model rather than emprical extracted) and so more accurately gives NFmin at very high frequency.....
Of course if you are really keen you could code the correlation yourself in your own model...
Look at the under modelling of the designers-guide.org to see veriloga examples of various bjt,hbt models.
cheers
aw