Suppose that the signal

is applied to an ideal sampler and zero-order hold.

(a) Show that the amplitude of the time function out of the zero-order hold is a function of the phase angle θ by sketching this time function.

(b) Show that the component of the signal out of the data hold, at the frequency ω = ω_s /2 , is a function of the phase angle θ by finding the Fourier series for the signal.

Transcribed Image Text:

e(t) = cos[(@5/2)t +0]