What is the system function for a two pole band pass filter that has t – McqOptions

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1.	What is the system function for a two pole band pass filter that has the centre of its pass band at = /2, zero its frequency response characteristic at =0 and at = , and its magnitude response is 1/ 2 at =4 /9?
A.	(0.15 frac{1-z^{-2}}{1+0.7z^{-2}} )
B.	(0.15 frac{1+z^{-2}}{1-0.7z^{-2}} )
C.	(0.15 frac{1-z^{-2}}{1-0.7z^{-2}} )
D.	(0.15 frac{1+z^{-2}}{1+0.7z^{-2}} )
Answer» B. (0.15 frac{1+z^{-2}}{1-0.7z^{-2}} )

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