Physics, asked by phalak6453, 1 year ago

What is modulation index. Why its value is kept less than one?

Answers

Answered by prabin100

Modulation Index is defined as the ratio between the amplitude of modulating signal and the carrier wave. If the modulation indexis greater than , that means the amplitude of the modulating wave is higher than that of the carrier wave. ... Thus, a low modulation index is always maintained.

So when m is greater than one, over-modulationoccurs and the modulating signal being of greater amplitude,part of its information is lost in the process of modulation which is undesirable. ... Hence its modulation index is kept below 1.

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