Sökning: "Circuit simulation"

Visar resultat 11 - 15 av 154 avhandlingar innehållade orden Circuit simulation.

  1. 11. Simulation and Optimization of SiC Field Effect Transistors

    Författare :Kent Bertilsson; Hans-Erik Nilsson; Christian Brylinski; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronics; SiC; Device simulation; RF; power; MESFET; Elektronik; Electronics; Elektronik;

    Sammanfattning : Silicon Carbide (SiC) is a wide band-gap semiconductor material with excel-lent material properties for high frequency, high power and high temperature elec-tronics. In this work different SiC field-effect transistors have been studied using theoretical methods, with the focus on both the devices and the methods used. LÄS MER

  3. 12. Hydrodynamic Modelling of Wave Power using Electrical Equivalent Circuit Theory

    Författare :Ling Hai; Mats Leijon; Rafael Waters; Lars-Göran Westerberg; Uppsala universitet; []
    Nyckelord :wave energy; hydrodynamic modelling; electric circuit; force and power analysis;

    Sammanfattning : Ocean wave energy can be harnessed and converted into electric energy nowadays. This provides a possibility for populations that live on islands or along coastlines to utilize the renewable and safe power produced by ocean waves. LÄS MER

  4. 13. District Heating Substations. Performance, Operation and Design

    Författare :Janusz Wollerstrand; Energihushållning; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; extreme value; heater; sizing; domestic hot water; drag reducing additives; microbial fouling; heat exchanger fouling; simulation; design; performance; District heating; substation; Energy research; Energiforskning;

    Sammanfattning : This thesis work is concerned with the efficient layout and operation of substations, i.e. those district heating (DH) system units which connect the network and internal building heating systems, such as radiator heating systems and domestic hot water distribution networks. LÄS MER

  5. 14. Oscillator design in III-V technologies

    Författare :Szhau Lai; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MMIC; InGaP HBT; device model; mixer; Darlington pair; GaN HEMT; simulation; varactor; phase noise; CAD; switch mode.; VCO; Colpitts oscillator; low frequency noise;

    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

  7. 15. At the Mountains of Modeling : Multiscale Simulations of Desalination by Capacitive Deionization

    Författare :Johan Nordstrand; Joydeep Dutta; Oscar Tjernberg; Maarten Biesheuvel; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Capacitive Deionization; Desalination; Modeling; Multiscale; Simulation; Avsaltning; Kapacitiv Avjonisering; Modellering; Multiskala; Simulering; Material and Nano Physics; Material- och nanofysik; Physics; Fysik;

    Sammanfattning : More than 2 billion people are living in water-scarce areas. Meanwhile, there are enormous amounts of water in the salty oceans. Capacitive deionization (CDI) rises to the challenge with electrochemical cells for desalinating the water. As the CDI field expands, modeling becomes an increasingly important part of the development landscape. LÄS MER