General non linear perturbation model of phase noise in LC oscillators

by Mukherjee, Jayanta

We present a non linear perturbation based Phase Noise model for LC oscillators. The model is applicable for both the white noise and flicker noise regions of the phase noise spectra. We also take in to account the buffer noise of oscillators and use it to account for the noise floor of oscillators. The model is applied both on an ideal Van Der Pol oscillator as well as an idealized differential oscillator. FInally the model is applied on a practical TSMC 0.18 um differential oscillator. In all cases the model matches the simulation and experimental results.