Sökning: "Björn Lindmark"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Björn Lindmark.

  1. 1. On Reconfigurable MEMS Antennas and Coupling Matrix Estimation

    Författare :Marc Mowlér; Björn Lindmark; Björn Ottersten; Pertti Vainikainen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telekommunications; Antennas; Estimation Theory; Telecommunication; Telekommunikation;

    Sammanfattning : In this thesis, two different topics are treated related to wireless communication. Part I presents three different reconfigurable MEMS integrated antennas for MIMO applications. Simulation and measurement results are presented along with brief discussions on the topic of antenna selection with reconfigurable antenna elements. LÄS MER

  3. 2. Analysis and Design of Base Station Antennas for Mobile Communications

    Författare :Björn Lindmark; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polarization diversity; dual polarization; adaptive antennas; moment method; genetic algorithm; antenna arrays; radio propagation; channel sounding; aperture coupled patch;

    Sammanfattning : The thesis deals with base station antennas and the environment they work in. Polarization diversity, dual band operation, and adaptive antenna systems are discussed with emphasis on how antennas for these applications should be designed. We compare the polarization diversity performance of different types of dual polarized antenna elements. LÄS MER

  4. 3. Polarization diversity and array signal processing in base station antennas

    Författare :Björn Lindmark; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; signal correlation; mobile communication; rayleigh fading; wireless communication; multibeam; dual band; dual polarized; multual coupling; infinite arrays; aperture coupled patch; antenna arrays;

    Sammanfattning : .... LÄS MER

  5. 4. Bildning i skuggan av läroverket : Bildningsaktivitet och kollektivt identitetsskapande i svenska gymnasistföreningar 1850-1914

    Författare :Björn Norlin; Daniel Lindmark; Christer Nordlund; David Ludvigsson; Umeå universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Education; liberal education; peer group socialisation; collective identity; youth movement; pupil culture; fraternity; pupil association; History; Historia; historia; History;

    Sammanfattning : The present dissertation investigates pupil fraternities in the Swedish state grammar school system from 1850 to 1914, in an effort to contribute to the understanding of peer group socialisation as part of the overall pedagogical process. Focus is trained on the practice of liberal education (Sw. LÄS MER

  7. 5. Bridging the gap between clinical trials and clinical practice : sacubitril-valsartan in heart failure as a model

    Författare :Helena Norberg; Krister Lindmark; Ellinor Bergdahl; Eva-Lotta Glader; Björn Wettermark; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Systematic implementation; healthcare quality improvement; chronic disease management; heart failure; sacubitril-valsartan; real-world population; sex differences; kardiologi; Cardiology;

    Sammanfattning : When novel treatments prove more effective than standard therapies, a swift and effective implementation is needed to reach cost-effectiveness and to benefit eligible patients. Meanwhile, women and elderly are often under-represented in clinical trials, which creates a knowledge gap on how to optimize treatment in clinical practice. LÄS MER