frequency modulation

Question

In FM, which parameter of carrier varies with modulating signal?

RankGuru · Accepted Answer

In Frequency Modulation (FM), the instantaneous **frequency** of the carrier wave is varied in proportion to the instantaneous amplitude of the modulating (message) signal. While the frequency changes, the **amplitude** of the carrier remains constant. This constant amplitude property makes FM much more resistant to noise (which primarily affects amplitude) compared to AM.

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frequency modulation

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