Sökning: "geodesic"

Visar resultat 1 - 5 av 21 uppsatser innehållade ordet geodesic.

  1. 1. 3D Printed Modulated Geodesic Lens Antenna With Even Coverage in the Far-Field

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

    Författare :Harald Lindohf; Marcus Wikner; [2022]
    Nyckelord :3D-printed; geodesic; modulated; Luneburg; beamforming; lens antenna;

    Sammanfattning : The development of 5G and 6G entails new demandson antennas. This includes fast and reliable connections to a largenumber of devices. A wider area of coverage, and thus moreantennas are also expected, which is problematic for the expensiveantennas used today. To meet those demands, a geodesic lensantenna has been proposed. LÄS MER

  3. 2. Implementing two-qubit gates along paths on the Schmidt sphere

    Kandidat-uppsats, Uppsala universitet/Materialteori

    Författare :Max Johansson Saarijärvi; [2022]
    Nyckelord :Quantum; Physics; Quantum physics; Quantum information; Quantum computers; Quantum computation; qubit; quantum gate; geometric quantum computation; GQC; quantum decoherence; Kvantfysik; Kvantdatorer; Kvantinformation; kvant; kvantberäkning; kvantgrind;

    Sammanfattning : Qubits (quantum bits) are what runs quantum computers, like a bit in classical computers. Quantum gates are used to operate on qubits in order to change their states. As such they are what ”programmes” a quantum computer. LÄS MER

  4. 3. Low-profile fully-metallic Luneburg lens antenna

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

    Författare :Justine Djounidi; [2022]
    Nyckelord :Beam Scanning; Luneburg Lens Antenna; Fully-metallic; Millimeter Wave; Vinkelskanning; Luneburg Linsantenn; Fullt Metalliskt; Millimetervåg;

    Sammanfattning : Modern communication systems face new technological challenges, such as the narrowness and overload of the conventional frequency bands employed for these applications. Nowadays, communication systems are expected to operate at higher frequencies, such as the mm-wave band. LÄS MER

  5. 4. Genuine geometric quantum gates induced by non-cyclic geodesic evolution of computational basis

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Materialteori

    Författare :Nils Eivarsson; [2022]
    Nyckelord :quantum computation; geometric phase;

    Sammanfattning : To reach the error threshold required to successfully perform error-correcting algorithms in quantum computers, geometric quantum gates have been considered because of their natural resilience against noise. Non-cyclic geometric gates have been proposed to reduce the run time of conventional geometric gates, to further guard against decoherence. LÄS MER

  7. 5. Dual-polarized geodesic lens in sub-THz

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

    Författare :Wenfu Fu; [2022]
    Nyckelord :beam scanning; dual polarization; fully metallic; geodesic lens; Luneburg lens antenna; THz; strålskanning; korspolarisering; fullt metallisk; geodetisk lins; Luneburg linsantenn; THz;

    Sammanfattning : In the sub-THz frequency range, the geodesic lens can realize low losses and beam scanning capability with high gain and high aperture efficiency due to its fully metallic property and rotational symmetry. Therefore, in high-frequency applications, a geodesic lens is considered a more promising solution in comparison to phased arrays or other beamforming techniques. LÄS MER