Multiple choice

A message signal m(t) = Am sin(2$\pi$ fmt) is used to modulate the phase of a carrier Ac cos (2$\pi$ fc t) to get the modulated signal y(t) = Ac cos (2$\pi$ fc t + m(t)). The bandwidth of y(t)

  1. depends on Am, but not on fm

  2. depends on fm, but not on Am

  3. depends on both Am and fm

  4. does not depend on Am or fm

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation