臺灣博碩士論文加值系統

近年來，在對於設計高品質因素，低成本，高功率的微波原件上，與傳統金屬波導管去有相似性能的基板合成波導技術逐漸受到重視。本論文主要係主要利用此技術，來應用在天線設計以及微波原件設計上。本篇論文第一個主題便是設計一基板合成波導方向耦合器，並將其應用在圓極化天線設計上。基於傳統圓極化天線設計上，在軸比3dB頻寬普遍因九十度相角差不易維持，容易因頻率上變動而改變，使得多數圓極化天線之圓極化頻寬受到限制。本結構利用基板合成波導在多孔耦合設計上九十度相角差的特質加上藉由槽孔耦合的方式來增加整體天線的頻寬，以設計出一具有較寬圓極化頻寬的圓極化天線。第二個主題為利用基板合成波導技術來設計一直角耦合之共振腔濾波器，並將其應用在微波元件中雙工器的設計上，來達成一設計尺寸較目前設計方式更為縮小的雙工器製作，提出在對此微波原件設計上的另種縮小方法。

Recently, a new technique called the substrate integrated waveguide (SIW) has been proposed and developed as relatively attractive for high-power, low-cost, high-quality, and high-density integration of micro- and millimeter-wave components. Characteristics of such SIW structures were similar with the conventional rectangular waveguides. This thesis mainly utilizes this technology to design circular polarized antenna and microwave component. The first topic of this thesis is designing a two-whole SIW coupler and then applying it to design a circular polarized antenna. For enhancing the circular polarized bandwidth of traditional polarized antenna, this thesis utilized the characteristics of SIW multihole combined with the methods of slot-coupled antenna to achieve the purpose of enhancing the circular polarized bandwidth. The second topic of this thesis is using a corner-coupled resonator to design a filter and then applying it to design a diplexer , providing a novel way in the field of designing a compact diplexer.

目錄
誌謝 ................................................................ iv
目錄 ................................................................. v
表目錄 ............................................................. vii
圖目錄 ............................................................ viii
第一章 簡介 .......................................................... 1
1.1研究動機..............................................................................................................1
1.2相關研究..............................................................................................................2
1.3內容提要..............................................................................................................3
第二章 基板合成波導方向耦合器理論 .................................... 4
2.1基板合成波導......................................................................................................4
2.1.1基板合成波導的特性...............................................................................5
2.1.2基板合成波導與平面電路的轉接結構...................................................7
2.2方向耦合器設計..................................................................................................9
2.2.1多孔耦合器[27] ....................................................................................20
2.2.2 Riblet 短槽耦合器.................................................................................21
第三章 基板合成波導圓極化天線設計 ................................... 24
3.1圓極化天線設計................................................................................................24
3.1.1單饋入圓極化天線設計.........................................................................25
3.1.2微帶金屬薄片天線.................................................................................26
3.2基板合成波導圓極化天線設計概念分析........................................................29
3.3基板合成波導圓極化天線設計架構................................................................30
3.4基板合成波導圓極化天線量測數據分析........................................................34
3.5 設計心得與天線效能探討...............................................................................41
第四章 基板合成波導共振腔理論 ....................................... 43
4.1矩型波導共振腔[27]........................................................................................43
4.2基板合成波導共振腔[27] ...............................................................................45
4.3基板合成波導帶通濾波器設計........................................................................46
4.3.1 傳統共振腔帶通濾波器........................................................................46
4.3.2 共振腔直角耦合帶通濾波器................................................................47
第五章 利用基板合成波導共振腔研製雙工器 ............................. 51
5.1 Riblet短槽耦合器結合共振腔帶通濾波器之雙工器設計.............................51
5.1.1 Riblet 短槽耦合器設計模擬.................................................................51
5.1.2 Riblet短槽耦合器結合共振腔帶通濾波器之雙工器設計原理..........54
5.2 Riblet短槽耦合器結合共振腔帶通濾波器之雙工器量測分析.....................57
vi
5.3 三埠雙工器設計...............................................................................................59
5.4 三埠雙工器量測數據分析...............................................................................61
第六章 結論 ......................................................... 64
參考文獻 ............................................................ 65

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