Sökning: "oscillator design efficiency"

Visar resultat 11 - 13 av 13 avhandlingar innehållade orden oscillator design efficiency.

  1. 11. Silicon Carbide BipolarTechnology for High Temperature Integrated Circuits

    Författare :Luigia Lanni; Zetterling Carl-Mikael; Sei-Hyung Ryu; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; silicon carbide SiC ; bipolar junction transistor BJT ; current gain; surface passivation; SiC etching; complementary bipolar; lateral PNP; Darlington transistors; SPICE modeling; high-temperature; integrated circuits; emitter coupled logic ECL ;

    Sammanfattning : The availability of integrated circuits (ICs) capable of 500 or 600° C operation can be extremely beneficial for many important applications, such as transportation and energy sector industry. It can in fact enable the realization of improved sensing and control of turbine engine combustion leading to better fuel efficiency and reduced pollution. LÄS MER

  3. 12. Optical Characterization of GaN/AIGaN Quantum Well Structures

    Författare :Hamid Haratizadeh; Tatiana Shubina; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The III-nitride material family is particularly well suited for optoelectronic applications, e.g. as UV light emitters in future lighting solutions that are expected to replace the incandescent and fluorescent lamps in use today. LÄS MER

  4. 13. Development of Multi-Dimensional Laser Techniques for In-situ Combustion Diagnostics

    Författare :Jenny Nygren; Förbränningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Laser Diagnsotics; Visualisation; Laser technology; Laserteknik; Motors and propulsion systems; Motorer; framdrivningssystem; Combustion; Temperature; Fysicumarkivet A:2003:Nygren;

    Sammanfattning : Multi-dimensional, laser-based measurements of quantities important for obtaining a better understanding of combustion processes, particularly of temperature and of species distributions, were performed using laser-induced fluorescence (LIF). The main purpose of the temperature experiments was to investigate the potential of employing a two-line atomic fluorescence technique (TLAF), using indium as the tracer species, in sooting environments such as in diesel engines. LÄS MER