Sökning: "Anders Bernland"

Hittade 2 avhandlingar innehållade orden Anders Bernland.

  1. 1. Integral Identities for Passive Systems and Spherical Waves in Scattering and Antenna Problems

    Detta är en avhandling från Department of Electrical and Information Technology, Lund University

    Författare :Anders Bernland; Lund University.; Lunds universitet.; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; dispersion relations; sum rules; physical limitations; Herglotz functions; electromagnetic scattering; antenna theory; spherical wave expansions; antenna measurements; propagation channel measurements;

    Sammanfattning : Sum rules and physical limitations within electromagnetic theory and antenna theory have received significant attention in the last few years. However, the derivations are often relying on application specific and sometimes unsupported assumptions, and therefore a mathematically rigorous and generally applicable approach seems timely. LÄS MER

  2. 2. Sum rules and constraints on passive systems - a general approach and applications to electromagnetic scattering

    Detta är en avhandling från Department of Electrical and Information Technology, Lund University

    Författare :Anders Bernland; Lund University.; Lunds universitet.; [2010]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Physical processes are often modeled as input-output systems. Many such systems obey passivity, which means that power is dissipated in the process. This thesis deals with the inevitable constraints imposed on physical systems due to passivity. A general approach to derive sum rules and physical limitations on passive systems is presented. LÄS MER