Please use this identifier to cite or link to this item:
Analysis of Cylindrical Periodic Structures and Their Application as a Microwave Leakage Prevention Device
|Keywords: ||柱面週期性結構;波模匹配法;Floquet 原理;有限元素法;微波阻波器|
Cylindrical periodic structure;Mode-matching method;Floquet's theory;Finite-element method;Waveguide choke
|Issue Date: ||2012-05-29T01:23:37Z
In this project, the propagation characteristics of a cylindrical periodic structure will be investigated. The structure has periodical corrugation in the
cladding and empty in the center. Furthermore, the corrugation may be of arbitrary shape and thickness, and could be one-dimensional or two-dimensional. The outermost layer of the cylindrical periodic structure is shielded by a perfect conductor. We will divide this project into
two parts, and use two different approaches for analysis. In the first part, mode-matching technique (MMT) in conjunction with the Floquet’s theory are utilized for theoretical analysis. The considered structures include those with corrugations of staircase shape, “I”-shape,“+”-shape, and the limiting geometry of triangle shape. The effects of structure period, the corrugation width and depth, and the material parameters on the
dispersion behavior will be investigated. In the second part, we apply the finite-element method for analysis, and use existing software for numerical solution. Besides the theoretical analysis, the corrugated cylindrical periodic structure are designed to serve as a wave-leakage prevention device in the entry and exit ports of an industrial microwave oven. We will examine the attenuating effects due to the corrugation
shape, structure period and total length as the wave is propagating through the waveguide choke. Results obtained in this research are expected to serve as useful references for researchers and designers working in this field.
|Relation: ||計畫編號:NSC91-2213-E018-002; 研究期間:200208-200307|
|Appears in Collections:||[電子工程學系] 國科會計畫|
Files in This Item:
All items in NCUEIR are protected by copyright, with all rights reserved.