Search for dissertations about: "extinction theorem"
Found 5 swedish dissertations containing the words extinction theorem.
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1. Retrieval of equivalent currents by the use of an integral representation and the extinction theorem --- radome applications
Abstract : The aim of this thesis is to solve an inverse source problem. The approach is based on an integral representation together with the extinction theorem. Both a scalar and a full-wave integral representation are implemented and solved by a Method of Moment procedure. READ MORE
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2. Dispersion Relations in Scattering and Antenna Problems
Abstract : This dissertation deals with physical bounds on scattering and absorption of acoustic and electromagnetic waves. A general dispersion relation or sum rule for the extinction cross section of such waves is derived from the holomorphic properties of the scattering amplitude in the forward direction. READ MORE
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3. Radome Diagnostics: utilizing Source Reconstruction based on Surface Integral Representations
Abstract : In this thesis, an inverse source reconstruction method with great potential in radome diagnostics is presented. A radome is a cover that encloses an antenna in order to protect it from environmental influences. READ MORE
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4. Dusty Globules and Globulettes
Abstract : Interstellar gas and dust can condense into clouds of very different size, ranging from giant molecular cloud complexes to massive, isolated, dark cloudlets, called globules with a few solar masses.This thesis focuses on a new category of small globules, named globulettes. READ MORE
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5. Globulettes : a new class of very small and dense interstellar clouds
Abstract : The space between stars is not empty, but filled with a thin gas and microscopic dust grains, together forming the so-called interstellar medium. Matter is concentrated into clouds of very different sizes, ranging from giant molecular cloud complexes to massive isolated dark small isolated cloudlets, called globules. READ MORE