Sökning: "gallium nitride GaN"
Visar resultat 1 - 5 av 43 avhandlingar innehållade orden gallium nitride GaN.
1. Processing, Characterization and Modeling of AlGaN/GaN HEMTs
Sammanfattning : III-Nitrides electronic properties make them currently the materials of choice for high-power high-frequency applications. Their wide bandgaps, high breakdown fields, the high electron peak and saturation velocities combined with the large conduction band offset and the high electron mobility observed in AlGaN/GaN heterostructures enable excellent microwave power performance of AlGaN/GaN high electron mobility transistors (HEMTs). LÄS MER
2. Gallium nitride templates and its related materials for electronic and photonic devices
Sammanfattning : .... LÄS MER
3. Molecular beam epitaxy growth and characterization of GaN, AlN and AlGaN/GaN heterostructures
Sammanfattning : The III-nitride materials, consisting of Al, Ga, In and N, have several physical properties that make them attractive for semiconductor devices in electronic and optic applications. A wide range of direct energy bandgaps (0.7 eV - 6.1 eV) can be obtained. LÄS MER
4. Theory and Design of Wideband Doherty Power Amplifiers
Sammanfattning : The Doherty power amplifier (DPA) is one of the most popular power amplifier architectures for obtaining high average efficiency for modern communication signals with high peak-to-average power ratios (PAPR). However, the DPA suffers from often having narrowband performance which limits its capabilities in wideband and/or multi-standard microwave and radio frequency applications. LÄS MER
5. Hot-wall MOCVD of N-polar group-III nitride materials and high electron mobility transistor structures
Sammanfattning : Group III-Nitride semiconductors: indium nitride (InN), gallium nitride (GaN), aluminum nitride (AlN) and their alloys continue to attract significant scientific interest due to their unique properties and diverse applications in photonic and electronic applications. Group-III nitrides have direct bandgaps which cover the entire spectral range from the infrared (InN) to the ultraviolet (GaN) and to the deep ultraviolet (AlN). LÄS MER