Sökning: "characteristic impedance"

Visar resultat 1 - 5 av 19 uppsatser innehållade orden characteristic impedance.

  1. 1. Design and Fabrication of a Kinetic Inductance Parameric Amplifier for multi-mode entanglement studies

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Sara Persia; [2022]
    Nyckelord :Parametric amplifier; kinetic inductance; superconducting NbTiN nanowires; Parametrisk förstärkare; kinetisk induktans; supraledanden NbTiN- nanotrådar;

    Sammanfattning : Parametric amplifiers are essential for analyzing and measuring the weak signals generated byquantum circuits at cryogenic temperatures. This project aims to realize a low noise travelingwave parametric amplifier (TWPA) by exploiting the nonlinear current dependence of thekinetic inductance of superconducting NbTiN nanowires. LÄS MER

  3. 2. Nonlinear mode coupling and parametric amplification with superconducting kinetic inductance

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Daniele Lopriore; [2022]
    Nyckelord :Quantum technology; microwave engineering; nanofabrication; parametric amplifiers; multimode entanglement; kinetic inductance; Kvantteknologi; mikrovågsteknik; nanotillverkning; parametriska förstärkare; multimodentrassling; kinetisk induktans;

    Sammanfattning : We investigate the resonant characteristics of superconducting meandering nanowires to design a nonlinear kinetic inductance traveling-wave parametric amplifier. The devices are patterned out of 15 nm thick NbTiN films. They consist of a coplanar waveguide, that shrinks into 100 nm wide meandering nanowires. LÄS MER

  4. 3. Locating faults in boundary wires for autonomous lawn mowers : An investigative study on methods used to locate faults in underground, low-voltage cables with focus on implementing Time Domain Reflectometer (TDR)

    Kandidat-uppsats, Jönköping University/JTH, Avdelningen för datateknik och informatik

    Författare :Mustafa Alhaj Kasem; Daniel Andersson; [2021]
    Nyckelord :Autonomous lawn mower; electrical fault locating; final thesis work; impedance; Time Domain Reflectometry.;

    Sammanfattning : Purpose:The purpose of this thesis was to identify a useful solution to find the location of a broken boundary wire. By useful we mean that the solution should be inexpensive, user friendly and accurate. LÄS MER

  5. 4. Study of different methodologies to determine relative dielectric constant of given substrate using fabrication, modelling and measurement strategies

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Anders Lundberg; [2021]
    Nyckelord :Relative dielectric constant; relative permittivity; PCB substrate material;

    Sammanfattning : In this thesis, different methods for measuring the relative dielectric constant is investigated using simulations and experimental approaches. The first method is known as the S-parameter inversion method. In this method formulae is used to calculate the characteristic impedance of the microstrip line from measured S-parameters. LÄS MER

  7. 5. Fault current injection from power electronic interfaced devices

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Sandra Thengius; [2020]
    Nyckelord :;

    Sammanfattning : An increasing number of synchronous generators being replaced by renewable energy sources (RES) and HVDC links is expected in the future. HVDC links, some fast-growing renewable energy sources (RES) such as wind and solar photovoltaics, and system controllers such as STATCOM, have power- electronic interfaces to the grid. LÄS MER