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A message signal of freuency 10 kHz and ...

A message signal of freuency 10 kHz and peak voltage of 10V is used to modulate a carrier wave of frequency 1 MHx and peak voltage of 20 V. Determine.`
(a) modulation index, (b) the side bands produced.

Text Solution

Verified by Experts

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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