Investigating stability by constructing Bode plots for the loop gain Aβ can be a tedious and
time-consuming process, especially if we have to investigate the stability of a given amplifier
for a variety of feedback networks. An alternative approach, which is much simpler, is to
construct a Bode plot for the open-loop gain A( jω) only. Assuming for the time being that β
is independent of frequency, we can plot 20 log(1/β) as a horizontal straight line on the same
plane used for