The carrier wave is represented by C(t)=5sin(10πt) volt. A modulating signal is a square wave as shown. Determine modulation index.
Solution:
Modulation index = Amplitude of Modulating Signal / Amplitude of Carrier Wave Here, amplitude of modulating signal, Am = 2V Amplitude of carrier wave, Ac = 5V ∴μ = Am/Ac = 2/5 = 0.4