Scalable Large Signal Modeling of InGaP/GaAs HBT for CAD Tools

A new HBT current source model and the corresponding direct parameter extraction methods are presented. Exact analytical expressions for the current source model parameter are derived. This method is applied to scalable modeling of HBT. Some techniques to reduce redundancy of the parameters are introduced. The model based on this method can accurately predict the measured data for the change of ambient temperature, size, and bias