Sökning: "GaN"
Visar resultat 21 - 25 av 155 avhandlingar innehållade ordet GaN.
21. 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
22. Advanced III-Nitride Technology for mm-Wave Applications
Sammanfattning : Within wireless communication, there is a continuously growing need for more bandwidth due to an increasing number of users and data intense services. The development within sensor systems such as radars, is largely driven by the need for increased detection range and robustness. LÄS MER
23. Nonlinear Modeling of FETs for Microwave Switches and Amplifiers
Sammanfattning : The exponential growth in wireless systems require rapid prototyping of radio frequency circuits (RF) using computer-aided design (CAD) enabled models. Most of the RF circuits (e.g. switches, amplifiers, mixers, etc. LÄS MER
24. Ultraviolet vertical-cavity surface-emitting lasers and vertical microcavities for blue lasers
Sammanfattning : III-nitride materials are used for ultraviolet (UV) and visible light emitters. One such light source is the vertical-cavity surface-emitting laser (VCSEL) that could find applications within areas ranging from sterilization and medical treatment to car headlights and augmented reality displays. LÄS MER
25. Efficient and Wideband Load Modulated Power Amplifiers for Wireless Communication
Sammanfattning : The increasing demand for mobile data traffic has resulted in new challenges and requirements for the development of the wireless communication infrastructure. With the transition to higher frequencies and multi-antenna systems, radio frequency (RF) hardware performance, especially the power amplifier (PA), becomes increasingly important. LÄS MER