Electronics and Communication Engineering - Communication Systems - Discussion

Discussion Forum : Communication Systems - Section 8 (Q.No. 15)
15.
An angle modulated signal is given by s(t) = cos 2p (2 x 106t + 30 sin 150t + 40 cos 150t). The maximum frequency and phase deviations of s(t) are
10.5 kHz, 140p rad
6 kHz and 80p rad
10.5 kHz, 100p rad
7.5 kHz, 100p rad
Answer: Option
Explanation:

s(t) = cos 2p(2 x 10+16t + 30 sin 150t + 40 cos 150t)

Phase deviation = 100 p

Frequency deviation = 7.5 kHz.

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