how to simulate P1db and ip3 of LNA using HSPICE?

you need to have a fairly accurate model for the transistor.
usulayy spice level 3 from Berekley model can provide good accuracy.

Mehdi

in hspice RF u can do it , with power sweep via the HB engin


khouly

Here is a link. Hope this helps...

http://www.designers-guide.org/Analy...cept-point.pdf