Question
Download Solution PDFThe pole-zero pattern of a certain filter is shown in the figure. The filter must be
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFAccording to the given pole zero pattern,
Transfer function is given by
H(s) = (s + j1) (s – j1) (s + j2) (s – j2)
= (s2 + 1) (s2 + 22)
Now, at zero frequency, s = 0
H(0) = (0 + 1)(0 + 4) = 4
At infinite frequency, s = ∞
⇒ H(∞) = ∞
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