1.

The prototype 2nd order low-pass type butterworth filter is given by

A. \(\frac{{\sqrt 2 }}{{{s^2} + \sqrt 2 s + 1}}\)
B. \(\frac{2}{{{s^2} + \sqrt 2 s + 2}}\)
C. \(\frac{1}{{{s^2} + \sqrt 2 s + 1}}\)
D. \({s^2} + \sqrt 2 s + 2\)
Answer» D. \({s^2} + \sqrt 2 s + 2\)


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