Sökning: "embedded band"

Visar resultat 6 - 10 av 42 avhandlingar innehållade orden embedded band.

  1. 6. Characterization of Terminal Antennas for Diversity and MIMO Systems by Theory, Simulations and Measurements in Reverberation Chamber

    Författare :Kent Rosengren; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mode stirred chamber; embedded pattern; channel capacity; radiation efficiency; reverberation chamber; embedded element; MIMO; diversity gain;

    Sammanfattning : This thesis is based on the work of designing and building a small reverberation chamber, and to use this chamber for characterization of antennas on mobile terminals such as phones. The characterization is done in terms of radiation efficiency, diversity gain and maximum available capacity. LÄS MER

  3. 7. Wide-angle scanning wide-band phased array antennas

    Författare :Anders Ellgardt; Martin Norgren; Lars Josefsson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical engineering; Elektroteknik;

    Sammanfattning : This thesis considers problems related to the design and the analysis of wide-angle scanning phased arrays. The goals of the thesis are the design and analysis of antenna elements suitable for wide-angle scanning array antennas, and the study of scan blindness effects and edge effects for this type of antennas. LÄS MER

  4. 8. Non-galvanic Interconnects for Millimeter-wave Systems

    Författare :Ahmed Adel Hassona; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; interconnects; THz; taper; waveguide transition; MMIC; InP; WR-6.5.; slot antenna; CMOS; eWLB; LTSA; finline; millimeter-wave; SiC; D-band; GaAs;

    Sammanfattning : Fueled by the increasing demand for higher data rates, millimeter-wave (mmW) systems emerged as a candidate that can provide multi-gigabit per second (Gb/s) transmission. This demand is mainly driven by modern communication systems and several other wireless and sensing applications such as production quality inspection and imaging systems. LÄS MER

  5. 9. I vinst och förlust : Köpmäns nätverk i 1500-talets Östersjöstäder

    Författare :Lovisa Olsson; Martin Wottle; Thomas Småberg; Dag Lindström; Södertörns högskola; []
    Nyckelord :HUMANIORA; HUMANITIES; Trade; Early modern history; Baltic Sea region; Credit networks; Urban history; Embedded economy; Network analysis; Town councils; Spatiality; Mobility; Economic history; Handel; Tidigmodern historia; Östersjöregionen; Kreditnätverk; Urbanhistoria; Inbäddad ekonomi; Nätverksanalys; Städernas råd; Spatialitet; Mobilitet; Ekonomisk historia; Historical Studies; Historiska studier; Östersjö- och Östeuropaforskning; Baltic and East European studies;

    Sammanfattning : This thesis aims to clarify how the merchant networks involved in the trade across the Baltic Sea interplayed with and contributed to create the economic culture of the Baltic Sea region. This is achieved by examining the economic, social, spatial and political aspects of the trade networks in relation to the social organisation of the early modern towns of Stockholm, Lübeck, Malmö and Reval (Tallinn) in the 16th century. LÄS MER

  7. 10. Novel RF MEMS Devices for W-Band Beam-Steering Front-Ends

    Författare :Nutapong Somjit; Joachim Oberhammer; Pierre Blondy; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis presents novel millimeter-wave microelectromechanical-systems (MEMS) components for W-band reconfigurable beam-steering front-ends. The proposed MEMS components are novel monocrystalline-silicon dielectric-block phase shifters, and substrate-integrated three-dimensional (3D) micromachined helical antennas designed for the nominal frequency of 75 GHz. LÄS MER