The disadvantage of FM over AM is that
A)high output power is needed
B)high modulating power is needed
C)noise is very high for high frequency
D)large bandwidth is required

Question

Quizplus · Accepted Answer

Frequency Modulation (FM) requires a larger bandwidth compared to Amplitude Modulation (AM). According to Carson's rule, the total bandwidth needed for FM is twice the sum of the maximum deviation frequency and the maximum modulating signal frequency, which is typically much larger than the bandwidth required for an equivalent AM signal.

The Disadvantage of FM Over AM Is That