Sökning: "GaN-HEMT"
Visar resultat 6 - 10 av 28 avhandlingar innehållade ordet GaN-HEMT.
6. Methods for Characterization and Optimization of AlGaN/GaN HEMT Surface Passivation
Sammanfattning : The Gallium Nitride based high electron mobility transistor is rapidly improving and is emerging as a viable alternative for use in high power applications operating in the microwave frequency domain. The suitability of the AlGaN/GaN material system is due to the possibility to grow epitaxial heterostructures that provide; high electron mobility, high electron saturation velocity, high carrier density and a high dielectric breakdown field. LÄS MER
7. High Efficiency Microwave Power Amplifiers in GaN-HEMT Technology
Sammanfattning : .... LÄS MER
8. MMIC-based Low Phase Noise Millimetre-wave Signal Source Design
Sammanfattning : Wireless technology for future communication systems has been continuously evolving to meet society’s increasing demand on network capacity. The millimetre-wave frequency band has a large amount of bandwidth available, which is a key factor in enabling the capability of carrying higher data rates. LÄS MER
9. Oscillator design in III-V technologies
Sammanfattning : The thesis treats the design of low phase noise oscillators/VCOs in GaAs/InGaP HBT and GaN HEMT technologies. The covered topics are: active device modeling, noise characterization, passive structures, phase noise models, simulation/measurement tools, circuit topologies, and design techniques. LÄS MER
10. Buffer Related Dispersive Effects in Microwave GaN HEMTs
Sammanfattning : In applications such as mobile communication and radar, microwave power generation at high frequency is of utmost importance. The GaN HEMT offers a unique set of properties that makes it suitable for high power amplification at high frequencies. LÄS MER