What is the deviation ratio for an FM signal with a maximum frequency deviation of ±5 kHz and a maximum modulation rate of 3 kHz?

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Multiple Choice

What is the deviation ratio for an FM signal with a maximum frequency deviation of ±5 kHz and a maximum modulation rate of 3 kHz?

The deviation ratio is the peak frequency deviation divided by the maximum modulating frequency. Here, the peak deviation is 5 kHz and the maximum modulation rate is 3 kHz. So the ratio is 5 kHz / 3 kHz = 1.666..., which rounds to 1.66. This dimensionless value shows how far the carrier’s frequency swings relative to the modulation rate, and it helps characterize the FM signal’s spectral spread in simple single-tone modulation.

The deviation ratio is the peak frequency deviation divided by the maximum modulating frequency. Here, the peak deviation is 5 kHz and the maximum modulation rate is 3 kHz. So the ratio is 5 kHz / 3 kHz = 1.666..., which rounds to 1.66. This dimensionless value shows how far the carrier’s frequency swings relative to the modulation rate, and it helps characterize the FM signal’s spectral spread in simple single-tone modulation.

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