Nonlinear modelling of IMPATT diode using linear RLC elements and nonlinear controlled sources

A new nonlinear model has been developed for IMPATT diodes using linear RLC elements and nonlinear controlled sources. It is shown that the model is capable of predicting the performance of the diode both in avalanche and non-avalanche regions, and predicting the performance of oscillators and amplifiers where this type of diode is used. An application of the model was shown by analysing an IMPATT oscillator on a CAD program. The results of the simulation and measurements are in close agreement which shows the accuracy of the model