Z TRANSFORM
converts a real or complex signal defined in the discrete time domain into a representation in the complex frequency domain.
transform examples
Impulse
Step
Ramp
Geometrical series
Convergence Region
The values when the transform converges
Properties
Superposition
homogeneity
additivity
Delay
Convolution
summation
multiplication by exponentials
derivation
Theorems
Initial Value
Final Value
expansion method in partial fractions
transfer function
Grafic Representation
delay unit
It is a device whose output signal is identical to the input signal
except that a unit is delayed for discrete time.
multiplier unit
The multiplier unit generates a sequence (output signal) identical to
the input sequence multiplied by some fixed scalar 'a'.
sum unit
is a device in wich two or more signals arrive that is added algebraically
cascade system
inverse system
feedback system
Discrete systems
Closed loops
Open loops
Applications
high pass filter
band pass filter
low pass filter