My problem is like that, in a lot of ADS examples i have seen that using S-parameters analysis simulation controler you can calculate the NF of an amplifier using its Spice model. Is that correct ?
I have tried myself comparing the spice results for the noise figure with the ones provided from a manufacturer and found different answers. The device i used was a philips one, BF41,where a spice model was provided and a S parameters with NFmin as well. The results didnt much at all.