engineering recuitment GATE ECE 2023-24 Test Series Signals and Systems Z Transform Region of Convergence in Z-Plane
If H(z) represents the z-transform function of a discrete-time feedback system, then the range of P, for which the system is stable is:
\( H\left( z \right)=\frac{P}{1+P\left( \frac{z}{z-0.9} \right)}\)1
-1.9 < P < -0.1
2
P < 0
3
P > -1
4
P > -0.1 ‘or’ P < -1.9