Sökning: "Glidsymmetri"

Hittade 5 uppsatser innehållade ordet Glidsymmetri.

  1. 1. Application of Twist Symmetry to a Cylindrical Dielectric Waveguide

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

    Författare :Kwinten Van Gassen; [2020]
    Nyckelord :;

    Sammanfattning : The application of higher order symmetry to waveguide design is an active field and is showing evidence of improvement over traditional waveguide designs. There are two forms of higher symmetry: glide symmetry and twist symmetry. LÄS MER

  3. 2. Simulation of Lüneburg Lens Constructed With Glide Symmetric Periodic Structures

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

    Författare :Joar Forsberg; Olle Blomqvist; [2020]
    Nyckelord :Metasurface; glide symmetry; lens; Lüneburglens; unit cell;

    Sammanfattning : The goal of this project was to design a lens utilisinga glide symmetric periodic structure. A Lüneburg lens forantennas with a center frequency of 8 GHz has been designed.The structure was constructed using a unit cell in the shape ofan angular Bowen knot. This unit cell was then etched on themetallic surface of a parallel plate waveguide. LÄS MER

  4. 3. Study of the effects of applying higher symmetries to printed filters

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

    Författare :Jose Luis Medran del Rio; [2018]
    Nyckelord :Glide symmetry; printed filter; microstrip; higher symmetries; Glidsymmetri; tryckta filter; mikrostrip; högre symmetrier;

    Sammanfattning : In recent years, a new field of study has arisen around theapplication of the so-called higher symmetries to structures that werealready thought to be completely studied and with no room forimprovement in terms of benefits.There are two types of higher symmetries, named glide and twistsymmetries. LÄS MER

  5. 4. A Cost-Effective Luneburg Lens Based on Glide-Symmetric Metasurface for 5G Applications

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

    Författare :Martin Mattsson; [2018]
    Nyckelord :;

    Sammanfattning : In this work, a cost-eective at Luneburg lens antenna operating at the Ka-band is presented.The antenna is suitable for high frequency applications in future communicationnetworks such as 5G systems due to its simple feeding, high directivity, and low loss.The lens is composed of a parallel plate structure loaded with glide-symmetric holes. LÄS MER

  7. 5. Ka-band 2D Luneburg Lens Design with Glide-symmetric Metasurface

    Master-uppsats, KTH/Elektroteknisk teori och konstruktion

    Författare :Jingwei Miao; [2017]
    Nyckelord :;

    Sammanfattning : A Luneburg lens is a beam former that has two focal points where one isat the surface and the other lies at innity. It is a cheap passive steerableantenna at high frequencies. In this thesis, a 2D at-prole Luneburglens with all-metal structure is designed for Ka band. LÄS MER