Mathematics · Communication Systems
An FM and a PM modulator are modulated by the same modulating signal with a peak amplitude of 5 V and a modulating frequency of 5 kHz. If the frequency deviation sensitivity is 1.5 kHz/V and the phase deviation sensitivity is 1.5 rad/V, choose the correct relation between their modulation indices.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Modulation index of PM = 5 × modulation index of FM✓
- 2Modulation index of PM = 2.5 × modulation index of FM
- 3Modulation index of PM = modulation index of FM
- 4Modulation index of PM = 4 × modulation index of FM
Correct answer
Modulation index of PM = 5 × modulation index of FM
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