In phase modulation, frequency deviation is-
Directly proportional to the amplitude of the modulating signal
It is directly proportional to the amplitude of the modulating signal A_m. Directly proportional to the amplitude of the modulating signal This is correct. The formula \Delta f_{max} = k_p A_m f_m shows that the frequency deviation is directly proportional to the amplitude of the modulating signal A_m, assuming k_p and f_m are constant.
Important Questions from Phase Modulation
Which of the following phase modulation applications is INCORRECT?
A message signal m(t) = A msin (2πf mt) is used to modulate the phase of a carrier A ccos (2πf ct) to get the modulated signal y(t) = A ccos (2πf ct + m(t)). The bandwidth of y(t)
If the modulating signal is a constant DC voltage, the output of a Phase Modulator will be:
