High electron mobility transistors 3 High electron-mobility transistors Electron mobility 2 Gallium nitride 2 III-V semiconductors 2 Aluminum gallium nitride 1 Amplifier circuits 1 Amplifiers 1 As-grown 1 Class E power amplifier 1 Class E power amplifiers 1 Complementary logic circuits 1 Computer circuits 1 Coupling coefficient 1 Electron channel 1 Electrons 1 Energy transfer 1 Field-effect transistor 1 GaN 1 Gain cell 1 Gain measurement 1 Gate-length 1 Hetero-interfaces 1 High gain 1 High-electron-mobility transistor 1 InGaAs-on-insulator (InGaAs-OI) 1 Inductive power transmission 1 Ingaas-on-insulator 1 Light amplifiers 1 Long-distance wireless 1