MULTIFINGER EFFECTS IN A GAAS FET DISTRIBUTED LARGE SIGNAL CAD MODEL

The paper introduces an approach to the modelling of microwave and millimetre-wave FETs based on electromagnetic field theory and semiconductor physics. The described non linear model relates the geometrical, material and process parameters to the device electrical performance. A scalable model derived by the GEC-Marconi F20 process for MESFETs with different gate finger numbers and gate widths has been implemented in a commercial CAD and it has been tested by comparison with large signal measurements