Discrete Voltage Controlled Oscillator
This diagram is an open loop model of a discrete Voltage Controlled Oscillator.
The noise added in the the tunning voltage is a White Gaussian Noise.
The regular output voltage can be described with this continuous equation :
The time domain integration of the input voltage is realized with the "EULERINTEGRAL"
block that uses a discrete backward-Euler rule and
block produces events corresponding to zero crossings of the output waveform with a discrete method of detection.
Fo = 10e6
To = 1/Fo
wo = 2*%pi*Fo
alpha = 60e6
kv = 60e6
j_vco = 100e6
N = 3
Nsampl = 80
Tsampl = To/Nsampl
Fsampl = 1/Tsampl
Tfin = 15*To
Figure : Input and output voltage of VCO
Figure : Events generated by the VCOEVT block
Figure : Events generated by the frequency divider block