circuitking
Full Member level 5
Hi, I know how to find dc analysis (to find gm) and ac analysis (to find gain) for a given circuit (Say CS stage) when resistive load (say R)is there, i.e. Resistor is connected between Vdd and drain terminal. From this I can arrive at the conclusion that voltage gain Av=-gm*(rds//R).
But what happens if I have a RF choke conected between Vdd and drain terminal. While performing AC analysis inductor (RF choke) should become open circuit which leaves drain terminal to be open and then the calculated voltage gain Av=-gm*rds. Is this correct or should we take the impedance of RF choke and include it also in the calculations?.
I also heard from a friend that there is something called RF anlysis also just like DC and AC analysis. I am wondering what that might be, anyone has any idea about it
But what happens if I have a RF choke conected between Vdd and drain terminal. While performing AC analysis inductor (RF choke) should become open circuit which leaves drain terminal to be open and then the calculated voltage gain Av=-gm*rds. Is this correct or should we take the impedance of RF choke and include it also in the calculations?.
I also heard from a friend that there is something called RF anlysis also just like DC and AC analysis. I am wondering what that might be, anyone has any idea about it