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  4. In frequency modulated wave:

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Q. In frequency modulated wave:

Bihar CECEBihar CECE 2004Communication Systems

Solution:

In frequency modulation, frequency of earner signal varies in accordance with the modulating signal. The amplitude of the carrier wave is fixed while its frequency is changing. When the instantaneous amplitude of the modulating voltage is large, the instantaneous carrier frequency is higher. It is lower when the modulating voltage is small.