An Analytical Current-Voltage Characteristics Model Including Velocity Overshott for HEMTs

摘要

In the paper, a half-experienced velocity overshoot model is firstly develoepd by the step electrical field approximation for the electrical field near the source end of the channel. Then, the analytical formulations of current-voltage characteristics for HEMT devices including velocity overshoot effect have been derived. The calculated results compared wiht the measured data show that this model is very suitable for CAD applications with greater accuracy.