Q. The equation of amplitude modulated wave is given by s(t) = 40[1+0.8cos(2π ×10^3t)]cos(4π×10^5t). Find the carrier power, the total sideband power and bandwidth of the signal. The value of resistor given is 30Ω.
Solution: Here,
We are given:
And:
Step 1: Identify the standard AM form
Standard AM wave:
From the given equation:
a) Carrier Power