Study and behavioural simulation of phase noise and jitter in oscillators

This paper investigates the phase noise and the jitter in oscillators. We have simulated in the transient domain the jitter of a voltage controlled oscillator (VCO) using an AHDL model. Simulation results verify the basic theory of oscillator jitter. The developed model can be adapted for any oscillator circuit and used to determine the effect of VCO jitter on a larger system such as a frequency synthesiser.