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Visar resultat 1 - 5 av 143 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Heterostructure Barrier Varactor Diodes for Frequency Multiplier Applications

    Författare :Jan Stake; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; III-V semiconductor; millimetre- and submillimetre wave power source; Heterostructure Barrier Varactor HBV ; frequency multiplier; varactor diode;

    Sammanfattning : This thesis deals with fabrication, characterisation and modelling of the Heterostructure Barrier Varactor (HBV) diode and its use in frequency multiplier circuits. Different aspects of material structures and frequency multipliers are described. LÄS MER

  3. 2. Planar Heterostructure Barrier Varactor Diodes for Millimetre Wave Applications

    Författare :Jan Stake; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; millimetre- and sub-millimetre wave power source; III-V semiconductor; varactor diode; frequency multiplier; Heterostructure Barrier Varactor HBV ;

    Sammanfattning : This thesis deals with fabrication, characterisation and modelling of the Heterostructure Barrier Varactor (HBV) diode and its use in frequency multiplier applications. Different aspects of material structures and frequency multipliers are described. LÄS MER

  4. 3. Functional gastrointestinal disorders, development of symptoms over time, and self-care

    Författare :Kerstin Stake-Nilsson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Background: Adults with Gastrointestinal (GI) symptoms such as abdominal pain, acid regurgitation, flatulence, diarrhea, constipation and nausea constitute a large part of the patient population in both primary and specialist care. Today, up to half of patients with gastrointestinal symptoms seen by gastroenterologists go through a standard diagnostic work-up usually including endoscopy, laboratory testing, and possibly radiological evaluation but do not show any signs explaining their symptoms. LÄS MER

  5. 4. Funktionella mag-tarmbesvär, symtomutveckling över tid samt egenvård

    Författare :Kerstin Stake-Nilsson; Högskolan i Gävle; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  7. 5. A hierarchical classification of the reasons for dividing products into modules : a theoretical analysis of module drivers

    Författare :Roger B. Stake; KTH; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER