Analysis on Scattering and Transmission Properties of Periodical Structures
| Autor: | Zih-Yuan Chen, 陳智遠 |
|---|---|
| Rok vydání: | 1999 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 87 The goal of this thesis is to investigate the scattering and transmission properties of periodical structures. This thesis consists of five chapters. In the first chapter, we analyze the TE mode scattering properties of metal strips attached to an aperture of finite extent. The effects of strip number, strip width, strip location, aperture size, and plate thickness are studied. The strip scattering can be utilized to improve the signal reception behind the plate where the incident wave is blocked. In the second chapter, we analyze the TM mode scattering by conductors of three different shapes. Various geometrical parameters are studied for their effects on the scattering field distributions, including aperture extent, slot width, plate thickness, conductor shape, and slot number. Such structure may find applications to improve the signal reception behind the plate where the incident wave is blocked. In the third and the fourth chapters, we study the scattering properties of one-dimensional periodical slots and conductor rods embedded in a stratified medium for the TE and the TM mode, respectively. The magnitude of all the excited Floquet modes, the reflected and the transmitted fields at various observation distances are obtained to analyze the effects of the period, rod cross section, slot width, and the dielectric constant of the stratified medium. The results resemble the characteristics of multipath fading observed in an indoor wireless communication system. In the fifth chapter, the dispersion properties of microstrip lines in the presence of periodically corrugated ground plane is analyzed. The effects of various geometrical and electrical parameters on the stopband / passband characteristics are studied. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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