Modified Gummel-Poon model for susceptibility prediction

This paper describes a new model of the bipolar transistor bq. which the effects of RF interference on the de quiescent operating point upset can be computed. It is an improvement of the Gummel-Poon (GP) model used in circuit simulators like SPICE, in the sense that it takes into account distributed phenomena el;cited by RF interference like the de and ac crowding of the emitter current in the base region. The model, implemented in SPICE, has been experimentally validated and its efficienty has been demonstrated. The model does not require more measurements then those necessary to extract the parameters of the conventional GP model.