Question

What is the impulse response of an S/H, when viewed as a linear filter?

(a) h(t)=\(\begin{cases}1,0≤t≤T\\0,otherwise\end{cases}\)

(b) h(t)=\(\begin{cases}1,0≥t≥T\\0,otherwise\end{cases}\)

(c) h(t)=\(\begin{cases}1,0<t≤T\\0,otherwise\end{cases}\)

(d) None of the mentioned

This question was addressed to me in my homework.

My doubt is from Digital to Analog Conversion Sample and Hold topic in section Sampling and Reconstruction of Signals of Digital Signal Processing

Answer 1

The correct choice is (a) h(t)=\(\begin{cases}1,0≤t≤T\\0,otherwise\end{cases}\)

Best explanation: W hen viewed as a linear filter, the S/H has an impulse response:

h(t)=\(\begin{cases}1,0≤t≤T\\0,otherwise\end{cases}\)