Sökning: "60 Ghz frequency"

Visar resultat 1 - 5 av 29 uppsatser innehållade orden 60 Ghz frequency.

  1. 1. Solutions for presence detection in an intercom door station

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Industriell elektroteknik och automation

    Författare :Anton Bengtsson; Måns Andreasson; [2023]
    Nyckelord :presence detection; sensor technology; PIR; ultrasonic; radar; intercom; Technology and Engineering;

    Sammanfattning : In this work, different solutions for human presence detection in a door intercom device are examined. The study was conducted at a company in Lund, Sweden. LÄS MER

  3. 2. 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

  4. 3. Fluid Surface Velocity Measurement Using Millimeter-Wave Radar Sensor

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Gustav Broman; Leo Ghatnekar Nilsson; [2022]
    Nyckelord :Fluid flow surface measurement; velocity estimation; FFT; fast-time phase change; radar.; Mathematics and Statistics;

    Sammanfattning : Contactless fluid surface velocity measurements with radar technology presents novel ways of determining fluid flow. The Acconeer A121 sensor is used, which is a pulsed coherent 60 GHz millimeter-wave radar, with high accuracy and low energy consumption. LÄS MER

  5. 4. Non-Planar 3D Printed Radar Lenses

    Magister-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Ali Bukht; [2021]
    Nyckelord :Non-Planar; 3D Printed; Lenses; Slic3r; 60 GHz;

    Sammanfattning : The primary motivation behind this research was to determine whether 3D printed lenses printed out using the non-planar technique can help achieve better beam intensity for a 60 GHz printed-circuit-board based radar and consequently improve radar efficiency. Non-planar printing is a new development in the 3D printing industry. LÄS MER

  7. 5. 3D-Printed Geodesic Luneburg Lens Antenna With Novel Patch Antenna Feeding

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

    Författare :Elin Berglund; Sandis Freimanis; [2021]
    Nyckelord :Luneburg lens; patch antenna; geodesic; transformation optics; 3D-printing;

    Sammanfattning : With the roll out of new technologies and the worldbecoming more connected, there is a rising demand for higherbandwidth and new frequency bands. To meet the demand,higher frequencies are used in new communication systems.Higher frequencies come with the need for new antenna designsand one promising type of antenna is the lens antenna. LÄS MER