A continuous physics-based electrothermal compact model for the study of non-linearities in III–V HEMTs

We present a newly developed continuous physics-based electrothermal I-V compact model suitable for the study intermodulation distortion in GaAs HEMTs and MESFETs. The model, which is an improvement of the standard Chalmers model, accurately includes self-heating while significantly minimizing the need for parameter fitting. The model, which is carefully calibrated using experimental data for submicrometer arsenide pHEMTs, is employed to calculate and analyze intermodulation products using the Volterra series method.