Ex 4-2: Find the modulation index and modulation depth if a carrier signal given by 8 cos 27 * 105t is modulated by the signal shown below using AM/DSB-LC technique. f(1) Solution: Ac = 8 v f (t)min =...

a) Write the equation of the modulated wave in example 4-2.

b) sceteh the waveform of modulated write its equation if the modulation type is AM/DSB- SC.

Extracted text: Ex 4-2: Find the modulation index and modulation depth if a carrier signal given by 8 cos 27 * 105t is modulated by the signal shown below using AM/DSB-LC technique. f(1) Solution: Ac = 8 v f (t)min = -6 v 6v 3*10*v -f(t)min 0.75 m = %3D Ac 10ʻv 4 10"v D = m x 100% =0.75% -6v The modulated signal waveform may be plotted as shown: ФАм (1) A. 14 2 -A. -8 -14