Consider the two feedback networks shown in Figures (a) and (b).
The 3 dB frequency of the amplifier A1 is 100 Hz and the 3 dB frequency of the second amplifier A2 is very large. The feedback transfer functions are β1 = 0.1126 and β2 = 0.0245.
(a) Determine the 3 dB frequency of each closed-loop network.
(b) What conclusion can be made as to the "better" closed-loop system?
