Sökning: "circular polarized"

Visar resultat 1 - 5 av 11 uppsatser innehållade orden circular polarized.

  1. 1. Wideband Dielectric Resonator Antenna Array for Autonomous Vehicles

    Uppsats för yrkesexamina på avancerad nivå, Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Andreas Johansson; Luke Müller; [2023]
    Nyckelord :DRA; dielectric resonator antenna; 5G; FR2; 28GHz; NR; antenna; circular polarization; autonomous vehicles;

    Sammanfattning : With the rapid advancement of autonomous vehicles, reliable and efficient wireless communication systems with high data rates have become essential for their safe and efficient operation and further evolution. High data rates are found in the higher frequency bands where conductive antennas lack radiation efficiency. LÄS MER

  3. 2. Dual Polarized Geodesic Lens

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

    Författare :Freysteinn Vidar Vidarsson; [2020]
    Nyckelord :;

    Sammanfattning : Gradient-index (GRIN) lens antennas, such as the Luneburg lens, posses attractive electromagnetic properties. The smooth change in refractive index ensures no internal reflections and the focusing of the electromagnetic waves results in a directive antenna. The main challenge of the design of a GRIN lens is acquiring the required refractive index. LÄS MER

  4. 3. A quantum chemical study of electronic circular dichroism in alanine oligopeptides

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Thomas Agrenius Gustafsson; [2018]
    Nyckelord :;

    Sammanfattning : Circular dichroism (CD) spectroscopy, exploiting the wavelength-dependentdifferential absorption of left- and right-handed circularly polarized light, isa popular method of protein characterization. Theoretically computed CDspectra from quantum mechanical computer models of peptides can widen theapplicability of the method. LÄS MER

  5. 4. Size and Abundance of Late Pleistocene Reticulofenestrid Coccoliths from the Eastern Indian Ocean in Relation to Temperature and Aridity

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Jeroen van Dijk; [2017]
    Nyckelord :coccoliths; abundance; biometry; circular polarized light microscopy; Late Pleistocene; Marine Isotope Stage 11; kokkoliter; mängder; biometri; cirkulär polariserat ljus; pleistocen; Marine Isotope Stage 11;

    Sammanfattning : Measurements on coccolith abundance and mass can be used as a signal of primary productivity and pelagic calcification in response to environmental change. The Leeuwin Current (LC) is known to transport warm and low-salinity waters from the Indo-Pacific Warm Pool (IPWP) southwards along the coast of West Australia. LÄS MER

  7. 5. Growth and Characterization of Al1-xInxN Nanospirals

    Master-uppsats, Tillämpad optik; Tekniska högskolan

    Författare :Sebastian Ekeroth; [2013]
    Nyckelord :Nanospirals; AlInN; Sapphire; Magnetron sputtering; Sculptured thin films; Ellipsometry; Circular polarization;

    Sammanfattning : In this work columnar nanospirals of AlInN were grown on top of TiN-coated sapphire substrates by magnetron sputtering. A variety of samples with different growth parameters were fabricated and investigated. LÄS MER