Approximate large-signal analysis of IMPATT oscillators

Considerable insight into the large-signal operating characteristics of IMPATT oscillators has recently been obtained from detailed numerical calculations involving a complete modelling of the physical processes taking place in the diode. However, execution time of existing computer programs is so long that extensive parameter studies are impractical. We present here a parameter study using a technique we have developed for analyzing oscillator modes for which Constant velocity is a good approximation. This technique reduces execution time substantially, but still uses a realistic physical model of the diode.