A 4 GHz carrier is DSB-SC modulated by a low pass...

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A 4 GHz carrier is DSB-SC modulated by a low pass message signal with maximum frequency of 2 MHz. The resultant signal is to be ideally sampled. The minimum frequency of the sampling impulse train should be

A. 4 MHz

B. 8 MHz

C. 8 GHz

D. 8.004 GHz

Answer: Option B

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