Search for dissertations about: "slot diode"

Found 3 swedish dissertations containing the words slot diode.

  2. 1. Novel Terahertz Emitters and Detectors: InGaAs Slot Diodes and InAs Self-Switching Diodes

    Author : Andreas Westlund; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; InAs; InGaAs; slot diode; self-switching diode; zero-bias diode;

    Abstract : Two novel types of diodes for emission and detection of THz radiation have been investigated. The diodes are based on high electron mobility III-V heterostructures. Both diodes are aimed for room-temperature operation, for which there is a demand for new THz technology. For emission, slot diodes based on an InGaAs heterostructure were studied. READ MORE

  4. 2. Energy-efficient Generating System for HVDC Off-shore Wind Turbine

    Author : Poopak Roshanfekr; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; surface permanent magnet synchronous generator SPMSG ; IGBT active rectifier; high voltage direct current HVDC ; wind energy; dc-link voltage; synchronous reluctance generator SynRG ; annual energy efficiency; diode passive rectifier; finite element method FEM ; interior permanent magnet synchronous generator IPMSG ;

    Abstract : This thesis investigates the design of energy efficient generating systems for off-shore wind turbines. For the generator part of the electric drive system, a surface mounted permanent magnet synchronous generator (SPMSG), an interior permanent magnet generator (IPMSG) as well as a synchronous reluctance generator (SynRG) have been investigated. READ MORE

  5. 3. Design and Fabrication of Light-Emitting Electrochemical Cells

    Author : Andreas Sandström; Ludvig Edman; Ronald Österbacka; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Light-emitting electrochemical cell; fabrication; organic semiconductors; organic electronics; ambient fabrication; roll-to-roll; fysik; Physics;

    Abstract : Glödlampan, en gång symbolen för mänsklig uppfinningsförmåga, är idag på väg att försvinna. Lysdioder och lågenergilampor har istället tagit över då dessa har betydligt längre livstid och högre effektivitet. READ MORE