Nonlinear embedding and de-embedding techniques for large-signal fet measurements

The manuscript presents a comparison between two nonlinear procedures oriented to the investigation of the intrinsic I/V dynamic characteristics at a transistor's current-generator plane. These approaches, without the need of modeling device trapping and thermal effects, allow to obtain information at the current-generator reference plane that is more strictly linked to the device performance in terms of output power and efficiency. Experiments carried out on a 800-μm GaN HEMT are reported.