engineering recuitment BEL Probationary Engineers Mock Test 2025 Communication Systems Angle Modulation Frequency Modulation
When the modulation index of an FM signal is small (much less than one), the bandwidth of the FM signal can be approximated by which of the following?
1
Twice the frequency deviation.
2
The sum of the carrier frequency and the frequency deviation.
3
Twice the sum of the carrier frequency and the modulating frequency.
4
Twice the highest frequency of the modulating signal.