Signals and Systems - ECE Questions and Answers

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If transfer function of a system is H(z) = 6 + z^-1 + z^-2 then system is

minimun phase

maximum phase

mixed phase

none

Answer : Option A

Explanation :

H(z) = 6 + z^-1 - z^-2, solve it by considering H(z) = 0 z = 1/3, -1/2 in H(z) only numerator.

Hence z = 1/3, - 1/2 will be zero, and if zero lies inside the unit circle, system will be of minimum phase.

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