Essays about: "dual polarization"

Showing result 1 - 5 of 13 essays containing the words dual polarization.

  1. 1. Antenna Arrays for Dual-Frequency Harmonic Radar Application

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Venkatesh Raja; Mohammad Zafar Mohammad; [2023]
    Keywords : Technology and Engineering;

    Abstract : The aim of this thesis is to design two patch antenna arrays for dual-frequency harmonic radar application, one for the transmitter and the other for the receiver. The arrays are used to track the Bogong moth that migrates from the countryside to the Australian Alps during spring. READ MORE

  3. 2. Dual-polarized geodesic lens in sub-THz

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

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

    Abstract : 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. READ MORE

  4. 3. Dual Polarized Geodesic Lens

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Freysteinn Vidar Vidarsson; [2020]
    Keywords : ;

    Abstract : 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. READ MORE

  5. 4. Dual-polarized feed for mmWave lens antennas

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Juan Luis Albadalejo Lijarcio; [2020]
    Keywords : ;

    Abstract : The fact of being bulky and not very cost-efficient made lens antennas not to be takenmuch into account in the past. Nowadays, this kind of antennas has attracted moreattention due to the increasing demand of higher frequencies in 5G, where lensesbecome considerably smaller. READ MORE

  6. 5. Corrosion studies on multicomponent TiZrNbTa thin films

    University essay from Uppsala universitet/Strukturkemi

    Author : Asker Jarlöv; [2020]
    Keywords : Corrosion resistance; Multicomponent thin-film; High entropy alloy; TiZrNbTa; Bipolar plates; Magnetron sputtering;

    Abstract : The goal of this work was to evaluate the electrochemical properties of TiZrNbTa thin films deposited by magnetron sputtering using an industrial physical vapor deposition system. Samples were deposited on both Si(001) and 316L stainless steel. READ MORE