How modulation index varies when assigned different values to it?
The modulation index or modulation depth is often denoted in percentage called as Percentage of Modulation. We will get the percentage of modulation, just by multiplying the modulation index value with 100.
For a perfect modulation, the value of modulation index should be 1, which implies the percentage of modulation should be 100%.
For instance, if this value is less than 1, i.e., the modulation index is 0.5, then the modulated output would have peak changes after some gaps. It is called as Under-modulation. Such a wave is called as an under-modulated wave.
If the value of the modulation index is greater than 1, i.e., 1.5 or so, then the wave will be an over-modulated wave. The output experiences a phase reversal.
How to Calculate Modulation Index with respect to Amplitude Sensitivity?
Modulation Index with respect to Amplitude Sensitivity calculator uses Modulation Index = Amplitude Sensitivity of Modulator*Amplitude of Modulating Signal to calculate the Modulation Index, Modulation Index with respect to Amplitude Sensitivity is the absolute value of the product of amplitude sensitivity parameter (K_{a}) and message signal m(t). Modulation Index is denoted by μ symbol.
How to calculate Modulation Index with respect to Amplitude Sensitivity using this online calculator? To use this online calculator for Modulation Index with respect to Amplitude Sensitivity, enter Amplitude Sensitivity of Modulator (K_{a}) & Amplitude of Modulating Signal (A_{m}) and hit the calculate button. Here is how the Modulation Index with respect to Amplitude Sensitivity calculation can be explained with given input values -> 0.306 = 0.05*6.12.