Contents
How is sideband power calculated?
The modulation index is m = 0.8. We will now substitute m=0.8, Pc = 124 W to find P. Therefore, the power in one of the sidebands in SSB SC modulation is 79.36 W.
How do you calculate upper sideband frequencies?
The so-called upper sidebands are those lying above the carrier. Their frequencies are: C+M C+2M C+3M C+4M C+5M …. For example, if C:M is 1:2, that is, the modulator is twice the frequency of the carrier, then the first upper sideband is: C+M = 1+2 = 3.
What is the upper sideband frequency?
Among the frequencies, the frequency that is above the frequency of the carrier wave is the upper sideband.
What is the difference between upper sideband and lower sideband?
In radio communications, a sideband is a band of frequencies higher than or lower than the carrier frequency, that are the result of the modulation process. The signal components above the carrier frequency constitute the upper sideband (USB), and those below the carrier frequency constitute the lower sideband (LSB).
What is the total power of two sidebands?
The total power in two sidebands is 48 – 43.59 = 4.41 W So the power in each sideband is 4.41/2 = 2
What are the components of the upper sideband?
The sidebands comprise all the spectral components of the modulated signal except the carrier. The signal components above the carrier frequency constitute the upper sideband (USB).
How to calculate the carrier power of an AM signal?
Modulation index m= 0.45. The total power in an AM is given by. P t = P c ( 1 + m 2 /2) = P c ( 1 +0.45 2 /2) 48 = P c * 1.10125. Therefore, P c = 48/ 1.10125. = 43.59 W. The total power in two sidebands is 48 – 43.59 = 4.41 W. So the power in each sideband is 4.41/2 = 2
How is the bandwidth required for amplitude modulation?
Thus, it can be said that the bandwidth required for amplitude modulated wave is twice the frequency of the modulating signal. Consider the following equation of amplitude modulated wave. Power of AM wave is equal to the sum of powers of carrier, upper sideband, and lower sideband frequency components.