Nonlinear Analysis and Simulation of a Fet Oscillator

The aim of the paper is to present methods of nonlinear analysis and show how can they be applied to oscillator design. We start with a simple but general circuit and we reduce the circuit to generalized van der Pol equations. We then apply the method of averaging and that of harmonic balance . The methods allow us to estimate power and frequency of oscillations. We also show how those two can be affected by the operating point. HP microwave nonlinear sirnulator. In particular the llsddl(l arbitrary nonlinear device)allows us to simplify the FET oscillator and to compare it directly with theoretical results.