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ECE · Q306

Signal Processing

Engineering and GATE · ECE · question 306

Q306

A discrete-time all-pass system has two of its poles at 0.25∠0° and 2∠30° which one of the following statements about the system is TRUE?

A.
It has two more poles at 0.5∠30° and 4∠0°
B.
It is stable only when the impulse response is two-sided
Answer
C.
It has constant phase response over all frequencies
D.
It has constant phase response over the entire z-plane

Answer: Option B

Solution

Answer: Option B
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