Question

Explain how amplitude modulated signal can be generated? Drive the expression of

modulated signal, total power, carrier power, sideband power, bandwidth, modulation

index, modulation efficiency​

Answer 1

Answer:

hope this helps

Explanation:

Let the amplitude modulated wave be-

m(t)=Amcos(2πfmt) - (1)

Here, Amis the amplitude of input signal

fmis the frequency of input signal

tis time taken

The carrier wave is represented as-

c(t)=Accos(2πfct) - (2)

HereAcis the amplitude of carrier wave

fcis the frequency of the carrier wave

Form eq (1) and eq (2), the amplitude modulated wave can be represented as-

a(t)=(Ac+Amcos(2πfmt))cos(2πfct)     - (3)

Therefore, the equation of an amplitude modulated wave is-a(t)=(Ac+Amcos(2πfmt))cos(2πfct)