Search for dissertations about: "AlGaN GaN HEMT"
Showing result 1 - 5 of 19 swedish dissertations containing the words AlGaN GaN HEMT.
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1. Processing, Characterization and Modeling of AlGaN/GaN HEMTs
Abstract : 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). READ MORE
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2. Methods for Characterization and Optimization of AlGaN/GaN HEMT Surface Passivation
Abstract : 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. READ MORE
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3. Buffer Related Dispersive Effects in Microwave GaN HEMTs
Abstract : 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. READ MORE
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4. Characterization and Compensation of Thermal Effects in GaN HEMT Technologies
Abstract : Further advancements with GaN based technologies relies on the ability to handle the heat flux, which consequently arises from the high power density. Advanced cooling techniques and thermal optimization of the technology are therefore prioritized research areas. READ MORE
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5. Advanced III-Nitride Technology for mm-Wave Applications
Abstract : 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. READ MORE