A 51 MHz sinusoid is sampled at a frequency by the periodic pulse train in XXXXXXXXXXresulting in a continuoustime signal . Sketch the spectrum of the resulting sampled signal when a. fs = 200 MHz  b....

A 51 MHz sinusoid is sampled at a frequency by the periodic pulse train in (13.9) resulting in a continuoustime signal . Sketch the spectrum of the resulting sampled signal when

a. fs = 200 MHz

 b. fs = 100 MHz

c. fs = 50 MHz

d. fs = 2 MHz