DELAGE , Sylvain Laurent

GaN and its related alloys constitute a family of wide bandgap semiconductors suitable to optoelectronics and power microwave applications. For the latter applications, their high breakdown fields in the 3MV/cm range and their high peak electron velocity above 107cm/s are crucial. The high electron mobility transistor (HEMT) based on GaN is...

In this letter, we demonstrate that, for high linearity application, GaN devices benefit from their high drain-source bias voltages. An improvement up to 20 dB in intermodulation ratio can be observed at high power levels compared to usual GaAs PHEMT devices. This study demonstrates that the high bandgap GaN devices are ideal candidates for the...