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研究生： 黃冠銓
Huang, Kuan-Chuan
論文名稱： 內藏式多頻天線設計
Embedded Multi-Band Antennas Design
指導教授： 李文熙
Lee, Wen-Hsi
學位類別： 碩士
Master
系所名稱： 電機資訊學院 - 電機工程學系
Department of Electrical Engineering
論文出版年： 2010
畢業學年度： 98
語文別： 中文
論文頁數： 47
中文關鍵詞： 單極天線 、寄生短路元件 、LTE
外文關鍵詞： monopole antenna, shorted parasitic element, LTE
相關次數： 點閱：70  下載：3 
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    • 本論文提出兩種內藏式多頻天線設計結構，適合應用於現今智慧型手機通訊裝置當中，在符合業界需求前提下，本論文天線設計以業界規格要求，於操作頻帶內其輻射效率達到40%以上為設計目標。第二章提出一耦合寄生短路元件之四頻天線設計，利用此寄生短路元件有效控制了輸入阻抗的移動，可涵蓋GSM900/1800/1900/UMTS 四頻操作，而第三章是具有一寄生短路元件之單極天線設計，沿用了第二章天線之寄生短路元件的特性再配合了單極天線而改良了天線頻寬的表現，可包含WWAN系統GSM850/900/1800/1900/UMTSU以及LTE系統之全頻操作。

    Two internal WWAN antennas having multi-band operation capability and suitable to be embedded in smart phones are proposed in this thesis. In the industry, many customers require that the antenna radiation efficiency must achieve more than 40%, which become our target to design the antennas in this thesis. In the chapter 2, we proposed a quad-band antenna design by coupling a shorted parasitic element which control the input impedance effectively. The antenna might cover GSM850/900/1800/1900/UMTS operation. In the chapter 3, monopole antenna with a shorted parasitic element has been proposed. And the antenna is designed based on the concept of a quad-band antenna design that we just mention it. Moreover ,we improve the antenna bandwidth performance by coupling a monopole antenna. Finally, it can cover six bands, including LTE and WWAN GSM850/900/1800/1900/UMTS operation.

    文字目錄 中文摘要 I 英文摘要 II 謝辭 III 文字目錄 IV 圖形目錄 VI 第 一 章 序論 ( Introduction )..............................1 1.1 研究背景與動機..........................................1 1.2 文獻導覽...............................................2 1.3 論文章節提要............................................3 第 二 章 耦合寄生短路元件之四頻天線設計 ( A Quad-band Antenna Design by Coupling a Shorted Parasitic Element ).......................................5 2.1天線設計與原理...........................................6 2.2模擬與實驗結果相關參數分析................................10 2.3 心得與討論.............................................18 第 三 章 具有一寄生短路元件之單極天線設計—六頻設計 (A Monopole Antenna with a Shorted Parasitic Element — Six-Band Design).............................................19 3.1天線設計與原理..........................................20 3.2 模擬與實驗結果暨相關參數分析討論.........................26 3.2.1 模擬與實驗結果討論....................................26 3.2.2 天線的相關參數分析....................................37 3.3 心得與討論.............................................42 第 四 章 結論 ( Conclusions )..............................43 參考文獻 (References).....................................45 圖形目錄 圖 2.1 耦合寄生短路元件之天線:(A)天線整體結構圖 ; (B)天線平面展開圖。.....................................................7 圖2.2 設計機制表示圖(A)單極天線與加入寄生短路線之輸入阻抗比較圖;(B)蜿蜒耦合金屬片之輸入阻抗圖;(C)本章節之天線輸入阻抗圖。........9 圖2.3 本章天線之返回損失實際量測與模擬結果比較。.............11 圖2.4 本章節天線與只有單極天線主輻射金屬片時之模擬返回損失圖。......................................................11 圖2.5 改變寄生短路元件之蜿蜒耦合金屬片長度參數M之返回損失圖。......................................................13 圖2.6 改變單極天線主輻射體金屬片之間隙寬度參數G之返回損失圖。......................................................13 圖2.7 改變寄生短路元件之末端延伸金屬片長度參數T之返回損失圖。......................................................14 圖2.8 本章天線設計在GSM900頻帶內之量測輻射效率圖。..........15 圖2.9 本章天線設計在GSM1800/1900/UMTS頻帶內之量測輻射效率圖。......................................................15 圖2.10 本章天線在頻率915 MHZ之實際量測輻射場型圖。...........17 圖2.11 本章天線在頻率1875 MHZ之實際量測輻射場型圖。..........17 圖2.12 本章天線在頻率2110 MHZ之實際量測輻射場型圖 。.........18 圖3.1 具有一寄生短路元件之單極天線:(A)天線結構圖 ; (B)天線平面展開圖。..................................................21 圖3.2 設計機制表示圖(A)單極天線與加入寄生短路線之輸入阻抗比較圖;(B)蜿蜒耦合金屬片第一次蜿蜒之輸入阻抗圖;(C)蜿蜒耦合金屬片第二次蜿蜒之輸入阻抗圖;(D)末端延伸金屬片延伸後之輸入阻抗圖。.............24 圖3.3 本章節天線輸入阻抗圖。..............................25 圖3.4 本章天線量測與模擬之返回損失圖。.....................26 圖3.5 本章天線與只存在單極天線主輻射金屬片時之模擬返回損失圖。......................................................27 圖3.6 各頻率之天線輻射金屬表面電流分布。....................29 圖3.7 寄生短路元件架構之天線(A)天線結構圖;(B)返回損失圖。....30 圖3.8 各頻率之天線輻射金屬表面電流分布。....................31 圖3.9 本章天線在頻率730 MHZ之實際量測輻射場型圖。...........34 圖3.10 本章天線在頻率900 MHZ之實際量測輻射場型圖。...........34 圖3.11 本章天線在頻率1800 MHZ之實際量測輻射場型圖。..........35 圖3.12 本章天線在頻率2000 MHZ之實際量測輻射場型圖。..........35 圖3.13 本章天線在頻率2170 MHZ之實際量測輻射場型圖。..........36 圖3.14 本章天線設計在 GSM850/900以及LTE頻帶之量測輻射效率圖。......................................................36 圖3.15 本章天線設計在GSM1800/1900/UMTS頻帶內之量測輻射效率圖。......................................................37 圖3.16 改變寄生短路元件之蜿蜒耦合金屬片長度參數M之返回損失圖。..38 圖3.17 改變饋入與寄生短路元件之耦合距離參數F之返回損失圖。......39 圖3.18 改變寄生短路元件之末端延伸金屬片參數T之返回損失圖。......40 圖3.19 改變寄生短路元件之末端延伸金屬片參數T之返回損失圖。......41

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