Sökning: "Charge injection"

Visar resultat 11 - 15 av 24 uppsatser innehållade orden Charge injection.

  1. 11. Design of a 30 GHz PLL for use in Phased Arrays

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Byron Murphy; [2016]
    Nyckelord :pll; phase-locked loop; beamforming; vco; qvco; Technology and Engineering;

    Sammanfattning : This project includes the research and implementation of a high frequency phase-locked loop (30 GHz or more) for beamforming use in a phased antenna array. The phase-locked loop includes a quadrature voltagecontrolled oscillator with a 10% tuning range and 417 degrees of phase control with a 10 degree resolution, a current mode latch in the divide-bytwo configuration operates over the quadrature voltage-controlled oscillator’s tuning range while consuming less than 583 uA of current, Dtype flip flops in a divide-by-8 configuration, a phase-frequency detector, a charge-pump, and a loop filter. LÄS MER

  3. 12. Parametric study of density down-ramp injection in laser wakefield acceleration

    Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Författare :Henrik Ekerfelt; [2015]
    Nyckelord :Laser wakefield acceleration; LWFA; gradient injection; density down-ramp injection; particle-in-cell simulation; PIC; top-view; top view; Thomson scattered light; trace; Physics and Astronomy;

    Sammanfattning : In laser wakefield acceleration (LWFA) a high intensity laser pulse is used to excite a plasma density wave with an associated electric field. This electric field can be used to accelerate electrons. However, to be accelerated the electrons first of all need to enter the plasma wave. This process is called injection. LÄS MER

  4. 13. Hall Measurement on Regrown Nanowires

    Master-uppsats, Lunds universitet/Fysiska institutionen

    Författare :Sudhakar Sivakumar; [2015]
    Nyckelord :Hall measurement; InGaAs; III-V semiconductor; ballistic; transport properties; mobility; sheet carrier concentration; Physics and Astronomy;

    Sammanfattning : Ternary semiconductor alloys like $In_xGa_{1-x}As$ have lured competing attention in connection to sub-50 nm high performance, low power, planar Complementary Metal Oxide Semiconductor technology. This compound semiconductor owes its popularity to excellent bulk carrier mobility, minority carrier diffusion constant, small bandgap, high electron injection velocity and its capability to take Moore's law beyond silicon platform. LÄS MER

  5. 14. Experimental comparison of DI and PFI in terms of emissions and efficiencyrunning Ethanol-85

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Daniel Ottosson; Konstantinos Zioris; [2014]
    Nyckelord :;

    Sammanfattning : It has in recent year become more and more important to find an alternative to fossil fuel in our vehicles due to the increasing fuel price and to reduce their negative impact on the environment. One alternative is already in widespread use around the world, namely ethanol. LÄS MER

  7. 15. Accumulator Ring Design for the European Spallation Source Neutrino Super Beam

    Kandidat-uppsats, Uppsala universitet/Högenergifysik

    Författare :Jakob Jonnerby; [2014]
    Nyckelord :ESS; European spallation source; neutrino; superbeam; accumulator;

    Sammanfattning : In this thesis, the design of a high intensity accumulator ring for the European Spallation Source Neutrino Super Beam (ESSnuSB) is considered. The European Spallation Source (ESS) linear accelerator (Linac), presently being constructed in Lund, Sweden, presents an interesting opportunity to also host an experiment to detect neutrino CP violation. LÄS MER