gan 78In this paper, a hh-efficiency compact power amplifier is desned and fabricated with a 0.25 μm GaN hh electron mobility transistor (HEMT) to meet the demands of a hhCANNES, France, May 24 (Xinhua) -- Chinese director Bi Gan won on Saturday the Special Award at the 78th Cannes Film Festival for his epic fiction feature Resurrection, known in