This thesis presents an introduction to rough surface scattering and describes techniques that were used during the course of this project to measure and characterize electromagnetic scattering from a rough surface. An analytical model is described that accurately predicts the statistics of the measured scattering data. The CW measurement process that was used is described and scattering measurement results are presented. Calculated and measured statistical moments are compared in order to show agreement of measurements with various statistical scattering models. Recommendations for additional work in the area of measurement and analytical modeling of rough surface scattering are given.

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Thesis (Ph. D.)--University of Washington, 1989. / Vita. Includes bibliographical references (leaves [118]-122).

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Call number: LD2668 .T4 1966 K96 / Master of Science

This dissertation presents the research on a novel combination of well proven concepts for passive electromagnetic wave-guiding components. The goal of this work is to overcome and minimize losses occurring in frequency-selective structures. The work aims to contribute to an improvement in the application of conventional and Substrate Integrated Waveguide (SIW). It is proposed to mount conventional waveguide structures on the surface of printed circuit boards containing substrate integrated waveguides. The crossover technology is referred to as Surface Mounted Waveguide (SMW). Theoretical investigations are performed, proving the validity and superiority of the proposed structure focusing on the elimination of losses, while maintaining low space consumption and printed circuit board technology compatible manufacturing processes. Additionally, a mode matching technique is developed and successfully applied to prototype such components. The validation of this method reveals superior computational speed when compared to commercial available electromagnetic field solvers. The proposed structures are validated by measurements of several prototypes, including coupled SMW resonator filters, combined SMW and SIW resonator filters, a SMW triple-layer diplexer and single individual SMW resonator filters. The experimental verification shows good agreement between theory and measurements. Moreover, the comparison to other technologies proves the superiority of the proposed structures. / Graduate

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Xu Bai Yu. / "August 22, 2000." / Thesis (Ph.D.)--Chinese University of Hong Kong, 2000. / Includes bibliographical references (p. [164]-169). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Mode of access: World Wide Web. / Abstracts in English and Chinese.