Sökning: "Radiation Patterns"

Visar resultat 1 - 5 av 66 uppsatser innehållade orden Radiation Patterns.

  1. 1. Ray Tracing Algorithm for Dielectric Domes

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

    Författare :Maria Pubill; [2023]
    Nyckelord :Array antenna; dielectric dome; Ray-Tracing; reflection; absorption losses; matching layers; Arrayantenn; dielektrisk kupol; strålföljning; reflektion; absorptionsförluster; anpassningsskikt;

    Sammanfattning : Almost hemispherical scanning capabilities are required for modern wireless communication systems to produce broad coverage without performance degradation. Phased array antennas are commonly used as a fully-electronic beam-steering solution for its rapidity in beam switching. LÄS MER

  3. 2. Optical properties of water absorbing textiles for camouflage

    Master-uppsats, Linköpings universitet/Institutionen för fysik, kemi och biologi

    Författare :Eveline Örtenberg; [2023]
    Nyckelord :Camouflage; SWIR; Water; Nanocellulose; CNF; Textiles;

    Sammanfattning : Background matching, a form of camouflage, involves species developing patterns and coloration that closely resemble their environment. Humans have utilized camouflage and background matching, particularly in military applications, to reduce detectable characteristics, known as signatures. LÄS MER

  4. 3. Near Field millimeter Wave Antenna Measurements

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

    Författare :Bharath Manjunatha; [2023]
    Nyckelord :Antenna Pattern; Near field to far field; Planar Scanning; Probe Compensation; Active Antenna; Technology and Engineering;

    Sammanfattning : In the real world, understanding an antenna's radiation pattern is crucial for its proper utilization. Typically, antennas are tested in the far-field region, where the radiation lobes are fully developed and phase errors are less than pi/8. LÄS MER

  5. 4. Forest regeneration and edge effects : an ecophysiological analysis after gap-cutting

    Master-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Tyra Tornberg; [2023]
    Nyckelord :Regeneration; Edge effects; Edge zone; Continuous cover forestry; Gap-cutting; Isotope analysis; 15N; Nitrogen; Carbon;

    Sammanfattning : As continuous cover forestry is an ongoing topic in todays forest debate, questions are raised about eventual issues connected to the management. It is known that seedling performance can be poor near the edge of harvested areas, and around retained trees. This is a critical issue in transitioning toward continuous cover forestry. LÄS MER

  7. 5. Faraday cage för förvaring av hemelektronik och EMF-dämpning

    Kandidat-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Arianne Östlund; [2023]
    Nyckelord :;

    Sammanfattning : Elektromagnetiska fält (EMF) finns överallt. De är naturligt förekommande, men teknik orsakar allt fler konstgjorda fält i olika styrkor ovanpå dessa. LÄS MER