The basic difference between the block diagram of an AM receiver and FM receiver is that
A) an FM receiver must use automatic frequency control
B) an FM receiver does not use the superheterodyne design
C) an FM receiver uses a limiter and discriminator instead of a diode detector
D) an FM receiver cannot ever use automatic gain control

Question

Quizplus · Accepted Answer

The fundamental difference between AM and FM receiver block diagrams is that an FM receiver incorporates a limiter and a discriminator (or phase-locked loop, PLL) for demodulating the frequency-modulated signal, whereas an AM receiver typically uses a diode detector for demodulating amplitude-modulated signals.

The Basic Difference Between the Block Diagram of an AM