Sökning: "RF heating"

Visar resultat 1 - 5 av 27 avhandlingar innehållade orden RF heating.

  1. 1. Efficient Solid-State Power Amplifiers for RF Power Source Applications

    Författare :Renbin Tong; Dragos Dancila; Jörgen Olsson; Olof Bengtsson; Zoya Popovic; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; back-off efficiency; high efficiency; power source; RF energy; RF measurements; radioisotope production; solid-state power amplifiers; Engineering Science with specialization in Microwave Technology; Teknisk fysik med inriktning mot mikrovågsteknik;

    Sammanfattning : Radio Frequency (RF) power sources are extensively applied in various fields. Radioisotope production, i.e., the production of short-lived radioactive isotopes, for positron emission tomography (PET) is one of the most important applications in the medical and healthcare domains. LÄS MER

  3. 2. Fast wave heating of cyclotron resonant ions in tokamaks

    Författare :Thomas Johnson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fusion plasma; tokamak; RF heating; fast wave heating; fast wave current drive; ion cyclotron resonance; ICRH; ICRF; ICCD; RF induced rotation; RF induced transport; RF induced pinch; RF pinch; finite orbit width; fast wave current drive; self-consi; Engineering physics; Teknisk fysik;

    Sammanfattning : .... LÄS MER

  4. 3. Ion cyclotron resonance heating in toroidal plasmas

    Författare :Johan Hedin; KTH; []
    Nyckelord :Fusion plasma; RF heating; self-consistent calculations; ion cyclotron resonance; fast wave current drive; finite orbit widths; RF induced transport; ICRF; ICRH; antenna phasing;

    Sammanfattning : .... LÄS MER

  5. 4. Fast wave heating and current drive in tokamaks

    Författare :Martin Laxåback; Torbjörn Hellsten; Raymond Koch; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Tokamak; JET; ITER; thermonuclear fusion; fast wave; heating; current drive; ion cyclotron resonance; polychromatic; finite orbit widths; RF-induced transport; neutral beam injection; fusion born alpha particles; magnetosonic eigenmodes; parasitic absorption; modelling; weighted Monte Carlo scheme; Fysik; Physics; Fysik;

    Sammanfattning : This thesis concerns heating and current drive in tokamak plasmas using the fast magnetosonic wave in the ion cyclotron range of frequencies. Fast wave heating is a versatile heating method for thermonuclear fusion plasmas and can provide both ion and electron heating and non-inductive current drive. LÄS MER

  7. 5. Design and Characterization of RF-LDMOS Transistors and Si-on-SiC Hybrid Substrates

    Författare :Sara Lotfi; Jörgen Olsson; Örjan Vallin; Jean-Pierre Raskin; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LDMOS; RF; losses; crosstalk; silicon carbide; Si-on-SiC hybrid substrate; wafer bonding; CMOS; Teknisk fysik med inriktning mot elektronik; Engineering Science with specialization in Electronics;

    Sammanfattning : With increasing amount of user data and applications in wireless communication technology, demands are growing on performance and fabrication costs. One way to decrease cost is to integrate the building blocks in an RF system where digital blocks and high power amplifiers then are combined on one chip. LÄS MER