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研究生:陳韋至
研究生(外文):Wei-Chih Chen
論文名稱:以微帶線結構實現相控陣列天線之研究
論文名稱(外文):The Study of Phased Array Antennas Realized with Microstrip Structure
指導教授:陳華明陳華明引用關係林憶芳林憶芳引用關係
指導教授(外文):Hua-Ming ChenYi-Fang Ling
學位類別:碩士
校院名稱:國立高雄應用科技大學
系所名稱:光電與通訊研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2009
畢業學年度:97
語文別:中文
論文頁數:81
中文關鍵詞:相控陣列天線巴特勒矩陣
外文關鍵詞:Phased array antennasButler matrix
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相控陣列天線具有提昇資料傳輸量及改善通信品質等優點,近年來已高度應用於基地台的智慧型天線系統,但陣列式天線的缺點是線路結構複雜、尺寸龐大,而且造價昂貴。
本篇論文提出一種基於「巴特勒矩陣」拓樸結構及多層基板技術的改良式移相網路設計,並據以實作成4×4及8×8移相網路。相較於傳統設計,改良式因無需任何0 dB交越耦合器,且為雙層結構,所以可大幅縮減尺寸而且易於設計;另外由於採用FR4基板材料及蝕刻製程,且無需使用任何開關元件、可調式移相器,或控制線路,所以易於製作且成本低廉;而且其功率均分能力及相位移精確程度亦較傳統式為佳。最後經結合4×1及8×1一維線性天線陣列後,所獲場型無論平均增益、旁波位凖SLL及指向角度、平均波寬均具有良好效能,達到以微帶線結構實現相控陣列天線之目的。
The phased array antennas takes advantages of improving data capacity and communication quality, and has been highly applied to smart antenna systems of base stations in recent years. The drawbacks of phased array antennas are complicated circuit structure, huge dimension, and costly.
This thesis proposed a novel design based on Butler matrix topology and multi-layers substrate technique, and the design has been fabricated in 4×4 and 8×8 beam-forming networks. Comparing with the conventional design, the novel one are very compact size and easy to be designed because of double sides structure and without any 0dB crossover. Owing to using etching method and FR4 substrate material, and without any switch component, variable phase shifter or controlled circuit, it is very simple to be manufactured and low cost. According to measurement result, the novel design has better power divided capability and phase shift accuracy then conventional one. Linking with the 4×1 and 8×1 array antennas, the measured patterns show good performance in average gain, side lobe level, main lobe direction, and average half power beam width, achieving the goal that realizing the phased array antennas with microstrip structure.
中文摘要----------------------------------------------------------------------------i
英文摘要---------------------------------------------------------------------------ii
誌謝--------------------------------------------------------------------------------iii
目錄--------------------------------------------------------------------------------v
表目錄----------------------------------------------------------------------------vii
圖目錄---------------------------------------------------------------------------viii
第一章 序論---------------------------------------------------------------------1
1.1 研究背景及動機--------------------------------------------------------1
1.2 文獻導覽-----------------------------------------------------------------5
1.3 研究方法及目的--------------------------------------------------------6
1.4 內容提要-----------------------------------------------------------------8
第二章 基本原理說明--------------------------------------------------------10
2.1 相控陣列天線原理說明----------------------------------------------10
2.1.1陣列因數特性分析-------------------------------------------------13
2.2 控制波束指向的方法-------------------------------------------------19
2.3 移相器-------------------------------------------------------------------22
2.4 巴特勒矩陣-------------------------------------------------------------24
2.4.1 巴特勒矩陣的固定移相器位置及角度規則------------------28
第三章 改良式4×4巴特勒移相網路設計及4×1陣列天線製作-----30
3.1 傳統平面式巴特勒移相網路--------------------------------------30
3.1.1 3dB直交分波器--------------------------------------------------31
3.1.2 0dB分枝耦合器--------------------------------------------------33
3.1.3 傳統4×4巴特勒移相網路效能分析--------------------------34
3.2 改良式4×4巴特勒移相網路設計---------------------------------38
3.2.1 槽孔耦合式耦合器-----------------------------------------------40
3.2.2 改良式4×4巴特勒移相網路實作與量測--------------------43
3.3 天線單元與陣列-----------------------------------------------------47
3.3.1 訊號自移相網路饋入天線陣列方式-------------------------47
3.3.2 天線單元研究-----------------------------------------------------47
第四章 改良式8×8巴特勒移相網路設計及8×1陣列天線製作---54
4.1 改良式8×8巴特勒移相網路設計----------------------------------54
4.2 連結8×1一維線性天線陣列測試----------------------------------62
第五章 結論與未來研究方向----------------------------------------------69

附錄 槽孔耦合式耦合器原理及分析-------------------------------------73
參考文獻-------------------------------------------------------------------------79
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[2] C.C. Chang, R.S. Li, and T.Y. Shih, “Design of a 8×8 Stripline Butler Matrix with Beam Steering Capability”, Antennas and Propagation Society International Symposium 2008 IEEE, July 2008.
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[7] K. W. Eccleston and S.H.M. Ong, “Compact planar micro-stripline branch-line and rat-race couplers”, IEEE Trans Microwave Theory Tech 51, pp. 2119–2125, 2003.
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[10] D. M. Pozar, “Design Considerations for Low Sidelobe Microstrip Arrays”, IEEE Trans. Antennas and Propagation, vol. 38, No. 8, pp. 1176-1185, Aug. 1990.
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[20] 李瑋仁,〝四波束切換式智慧型陣列天線之研製〞,92年6月。
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[25] W. Hilberg, “From Approximations to Exact Relations for Characteristic Impedances”, IEEE Trans. Microwave Theory and Techniques, vol. MIT-17, No. 5. pp. 259-265, May, 1969.
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