DEMO 1 - Slide the mouse over the gray rectangles to see how the ideal bandpass filter can be used to obtain the harmonics of the one-half duty cycle pulse train x(t).
DEMO 2 - Slide the mouse over the gray rectangles to see how the nonzero harmonics from Demo 1 above add up to produce the pulse train.
DEMO 3 - Slide the mouse over the gray rectangles to see how increasing the passband of the ideal lowpass filter affects its steady state response to a one-half duty cycle pulse train.
