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Frequency

A bandpass si...

Question

A bandpass signal has a spectrum as depicted in the figure below. The minimum sampling frequency that can be used is______kHz.

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Solution

The correct option is A 20
$∵ f_{s (m i n)} = \frac{2 f_{m}}{m} where m = largest integer less than \frac{f_{2}}{B} = \frac{30}{8} = 3.75 m = 3 ∴ f_{s (m i n)} = 2 \times \frac{30}{3} = 20 k H z$

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