How to find Vo of this pi model of FET amplifier? I have to find voltage amplification (Av=Vo/Vi) of this circuit and output resistance Ro, so I need to find the Vo voltage. I found the expression for current id, but I don't know how to express Vo. Could you please help? Thanks in advance.
(id-gm1Vgs1)rd1 + idRs1 + (id-gm2Vgs2)rd2 + idRs2=0
(id -gm1(Vi-idRs1))rd1 + idRs1 + (id-gm2(Vi-idRs2))rd2 +idRs2=0
if the calculation are made
id= (gm1rd1 +gm2rd2)Vi / rd1+rd2+Rs1+Rs2+gm1Rs1rd1+gm2Rs2rd2
this is the original circuit