Sökning: "THz"

Visar resultat 16 - 20 av 27 uppsatser innehållade ordet THz.

  1. 16. Implementation of Visible Light communications For Indoor Applications

    Magister-uppsats, Blekinge Tekniska Högskola

    Författare :Nitish Nagabhairava; [2018]
    Nyckelord :OOK modulation scheme; MATLAB-Simulation; Light Emitting Diodes .;

    Sammanfattning : In recent years there is growing research in optical wireless communication. This growing popularity isdue to several characteristics like such as large bandwidth that is also not having spectrum regulationsimposed, low cost and license-free operation. LÄS MER

  3. 17. Physical Layer Algorithms for Intrabody Nano-Communications

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

    Författare :Anders Enqvist; [2018]
    Nyckelord :;

    Sammanfattning : In this thesis we develop a mathematical model of the physical layerfor an in-body nano-machine (NM) communication. The purpose isfinding what modulation and detection schemes are suitable for applicationin the body and discovering what factors limit the feasiblecommunication distance. LÄS MER

  4. 18. Modeling and Characterization of a Propagation Channel in a Body-Centric Nano-Network

    Magister-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Charlie Pettersson; [2018]
    Nyckelord :;

    Sammanfattning : Researchers have been trying to find smart health solutions that will allow people to continuously monitor their health through applications connected to the internet. One possible solution involve using nano-machines to create body-centric networks. LÄS MER

  5. 19. Fabrication and Charaterisation of Finger Gates

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

    Författare :Daniel Svedbrand; [2017]
    Nyckelord :Transistor; MOSFET; NWFET; Nanowire; Finger gate; HSQ; InAs; InGaAs; III-V-material; buffer-layer; CV-characterisation; CV-measurements; Physics and Astronomy; Technology and Engineering;

    Sammanfattning : In this thesis were vertical NWFETs (nanowire field-effect transistors) fabricated, and their electrical properties characterised. The main goal was to minimize the parasitic capacitances that limited the high frequency performance. The nanowires consisted of InAs/InGaAs heterojunctions, and were grown on top of Si via a buffer layer. LÄS MER

  7. 20. Electric Field Domains in Quantum Cascade Lasers

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Matematisk fysik

    Författare :Tim Almqvist; [2017]
    Nyckelord :quantum cascade laser; QCL; electric field domain; EFD; NDR; negative differential resistivity; simulations; Tim; Almqvist; kvantkaskadlaser; Physics and Astronomy;

    Sammanfattning : Quantum cascade lasers (QCLs) are periodic semiconductor heterostructures, capable of producing laser gain. They have become an important source of coherent radiation in the mid infrared, and THz frequency regions. QCLs are non-linear electric devices, and often have bias regions of negative differential resistivity (NDR). LÄS MER