Large Signal Evaluation of Nonlinear HBT Model

ABSTRACT — The recently developed LS HBT model was evaluated with extensive Power spectrum, Load pull and Inter-modulation investigations. Some changes of the model were made, like improved temperature, leakage resistance and capacitance models. The corresponding changes were implemented in ADS as SDD. Important future of the model is that the model parameters are organized to use directly measured parameters in rather simple and understandable way. Modeling results were compared with multiple DC, Sparameters and LS data and show good accuracy despite the simplicity of the model. To our knowledge the HBT model is one of the few HBT models which can handle high current &Power HBT devices, with significantly less model parameters with good accuracy.