English  |  正體中文  |  简体中文  |  Items with full text/Total items : 6491/11663
Visitors : 24483491      Online Users : 78
RC Version 3.2 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/10716

Title: 柱面週期性波導之特性研究及其作為微波防漏結構之應用
Analysis of Cylindrical Periodic Structures and Their Application as a Microwave Leakage Prevention Device
Authors: 李清和
Contributors: 電子工程學系
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
Date: 2002-08
Issue Date: 2012-05-29T01:23:37Z
Publisher: 行政院國家科學委員會
Abstract: 本計畫針對新型柱面式多層皺摺週期性結構之傳播特性作研究,所處理之柱面週期性皺摺結構的層數、厚度及介
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:

File SizeFormat
2050300112002.pdf131KbAdobe PDF532View/Open

All items in NCUEIR are protected by copyright, with all rights reserved.


DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback