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Question

the frequency of a carrier wave is 2x10^6 Hz. if a modulating wave has a frequency of 10 Hz, what is the bandwidth of the modulated wave?

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Solution

$S o t h e F M t r a n s m i s s i o n w i l l b e f r o m (f_{c} - f_{m}) t o (f_{c} + f_{m}) w h e r e f_{c} = 2 \times 10^{6}; f_{m} = 10 (f_{c} - f_{m}) = 1999990 (f_{c} + f_{m}) = 2000010 b a n d w i d t h = 20 H z = 2 f_{m}$

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