ON THE NONLINEAR MODELING OF RING OSCILLATORS
We develop higher-order nonlinear models of three-stage and five-stage ring oscillators based on a novel inverter model. The oscillation condition and oscillation frequency are derived and compared to classical linear model analysis. Two important special cases for five-stage ring oscillators are also studied. Numerical simulations are shown.
nonlinear modeling ring oscillators nonlinear oscillators nonlinear circuits