Sökning: "Gap waveguide"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden Gap waveguide.

1. 1. A Travelling Wave Slot Array based on a Double-Layer Lens for 77 GHz Automotive Radar

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

   Författare :Ashray Ugle; [2023]
   Nyckelord :Automotive radar; Double-layer lens; Gap waveguide technology; Waveguide slot; Antenna array; Lens-beamforming.; Bilradar; Dubbelskiktslins; Gap-vågledarteknik; Waveguide-kortplats; Antennuppsättning; Lens-beamforming.;

   Sammanfattning : Automotive radars have gained considerable interest in recent years for applications of road safety for vulnerable road users. The use of multipleinput and multiple-output (MIMO) technology in automotive radar has helped in realising a virtual aperture greater than the physical aperture of the antenna which has reduced the size of the overall radar module. 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. 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

5. 4. Glide-symmetric Holey EBG Filter Using Multiple Unit Cell Designs

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

   Författare :Gustav Eliasson; Lucas Åkerstedt; [2021]
   Nyckelord :Glide symmetry; waveguide filter; 5G; Electric band gap; unit cell; coaxial cable; holey structures; mm-wave;

   Sammanfattning : There are more connected wireless devices than everbefore and with the rise of new smart systems such as self-drivingcars and smart cities new antenna solutions for transmittingsignals are needed. One important part of these systems is thefilters which filter out all the unwanted signals. LÄS MER

7. 5. Low-dispersive Leaky-wave Antennas: A Viable Approach for Fifth Generation (5G) mmWave Base Station Antennas

   Master-uppsats, KTH/Elektroteknisk teori och konstruktion

   Författare :Oskar Dahlberg; [2019]
   Nyckelord :;

   Sammanfattning : In this work, a method to achieve reduced beam-squint in fully metallic leaky-wave antennas is proposed and its applicability for high frequency, high gain, base station antennas in future communication networks is indicated. The antenna is built in gap waveguide technology, where the fundamental mode is allowed to leak by removal of one of the waveguide walls. LÄS MER