I have trouble adding a capacitor in the middle of the two stages (between the drain of stage 1 and the gate of stage 2). I get an error saying that there is a "floating node". What is up with that ? I do have a small AC signal of frequency 5K and amplitude 1 mv going through so it should not give me this error right?
Insert a very high value resistance (say 100Meg) in parallel to capacitor between two stage. This should fix floating node error.
In reply to alokt:
Ok that sounds like a work around (patch up) but it still does not resolve the main issue: why the second stage is having trouble amplifying the signal.