Sökning: "15 GHz"

Visar resultat 11 - 15 av 42 uppsatser innehållade orden 15 GHz.

  1. 11. Slotted Waveguide Array Synthesis in Gap Waveguide Technology

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

    Författare :Alvaro Morso Granero; [2021]
    Nyckelord :;

    Sammanfattning : The automotive industry is evolving with the advent and development of autonomous cars. For the operation of these vehicles, sensors are needed, and utilising radar technology is a good solution. LÄS MER

  3. 12. Design of Two 28 GHz Doherty Power Amplifier Topologies with Vertical In(Ga)As Nanowire Transistors

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

    Författare :Simon Olson; Lucas Nilsson-Villoresi; [2020]
    Nyckelord :Doherty; PA; DPA; 28 GHz; Power amplifier; nanowire; transistor; In Ga As; Technology and Engineering;

    Sammanfattning : In this Master’s thesis, two different 28 GHz Doherty power amplifiers (DPAs) are designed, for high power added efficiency (PAE), in the common source (CS) and cascoded topology respectively. The results are analyzed and compared between the two approaches. LÄS MER

  4. 13. 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

  5. 14. Millimeter Wave Radar as Navigation Sensor on Robotic Vacuum Cleaner

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

    Författare :Anneli Blomqvist; [2020]
    Nyckelord :Millimeter wave radar; Robotic vacuum cleaner; Indoor navigation; Localization; Obstacle Detection; Millimeter radar; Robotdammsugare; Navigering inomhus; Positionering; Hinderdetektion;

    Sammanfattning : Does millimeter-wave radar have the potential to be the navigational instrument of a robotic vacuum cleaner in a home? Electrolux robotic vacuum cleaner is currently using a light sensor to navigate through the home while cleaning. Recently Texas Instruments released a new mmWave radar sensor, operating in the frequency range 60-64 GHz. LÄS MER

  7. 15. A Quadrature Frequency Generation Chain for Direct-conversion Phased-array 5G Transceivers

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

    Författare :Hamid Yadegar Amin; [2020]
    Nyckelord :5G Phased array mm-wave FR2; Technology and Engineering;

    Sammanfattning : The 5th generation (5G) has recently specified a new spectrum range, FR2- 5G New Radio (5G-NR), to provide higher spectral efficiency and channel capacity for ubiquitous cellular connectivity where the user ends can be in various types such as picocell stations, sensor nodes, cloud servers, hand-held devices, and so on. Due to the advantage of phased array antennas in performing beam-forming, and improving SNR at higher spectra, multi-antenna systems have gained an inevitable role in developing such radios. LÄS MER