Complete and systematic simulation tools for frequency divider design

A general design method for the enforcement of stable operations in nonlinear circuits under large-signal drive, or for the intentional generation of unstable spurious signals (e.g. at sub-harmonic frequency) is proposed. The method is based on the properties of the conversion matrix of nonlinear devices driven into nonlinear operations by a large driving signal. Applications to the design of spurious-free power amplifiers and to the design of frequency dividers are described. Measurements are in excellent agreement with the proposed theory.