A hydrodynamic energy model is efficiently used for the simulation of
a dual-gate lattice matched MODFET at room temperature. The results ob
tained give a good insight of the device physics and permit through th
e systematic use of the model to predict the equivalent circuit elemen
ts. A simplified model is suggested where these elements as well as d.
c. and a.c. characteristics could be precisely characterized depending
only on electrodes potential.