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A message signal of frequency 10 KHz and...

A message signal of frequency 10 KHz and peak voltage of 10V is u sed to modulate a carrier of frequency 1 MHz and peak voltage of 20V. The frequency of the side bands produced is

Text Solution

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The correct Answer is:
A, B
(a) Modulation Index
`mu=A_s/A_c=10/20=0.5`
(b) Side Bands
`1MHz=1000 kHz`
The side bands are,`(omega_c-omega_s)and(omega_c+omega_s)`
or we can write `(f_c-f_s) and (f_c+f_s)`
`(f_c - f_s) = (1000-10) = 990 kHz` and
`(f_c + f_s) = (1000+10) = 1010 kHz`.
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