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For a phase modulated signal, the frequency deviation is proportional to ________

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For a phase modulated signal, the frequency deviation is proportional to ________

(a) frequency only

(b) amplitude only

(c) only width

(d) phase only

This question was addressed to me in final exam.

The origin of the question is Comparison Between FM and PM topic in portion Noise of Analog Communications

1 Answer

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Best answer
The correct option is (b) amplitude only

Explanation: For a phase modulated system, it is amplitude which is directly proportional to the deviation.

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