eesurgeon
Newbie level 3
For a MOSFET, while deriving the transit frequency wT (defined as where the current gain is unity), it is common to neglect the current fed forward through Cgd (i.e. the output current io = gm*vgs and not gm*vgs-jw*Cgd).
What is the reason for doing so?
What is the reason for doing so?