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研究生： 蔡孟學
Tsai, Meng-Shiue
論文名稱： 新型雙E型狹縫平板單極天線的設計及應用
Design and Application of Novel Double E-Slits Planar Monopole Antenna
指導教授： 李炳鈞
Li, Bing-Jing
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： 2006
畢業學年度： 94
語文別： 中文
論文頁數： 112
中文關鍵詞： 單極天線 、陶瓷基板 、多頻天線
外文關鍵詞： monopole antenna, multi-band antenna, ceramic substrate
相關次數： 點閱：163  下載：4 
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    • 本論文提出了一個使用在無線通訊系統頻段（GSM 900、DCS 1800以及PCS 1900）的新型平板單極天線，天線結構為利用微帶線饋入包含兩個E型狹縫的矩形輻射金屬片，由於狹縫可調整共振模態的激發頻率以及增進阻抗頻寬，經由適當的調整狹縫大小，可使天線激發出兩個共振頻率以及不錯的阻抗匹配，因而達成多頻且寬頻操作的天線特性，天線的高低頻的頻寬分別可達到14.6%以及34%，文中將詳細探討天線設計的各項特性。
    另外，由於陶瓷材料具有良好的高頻微波特性以及環境穩定度，其整合主/被動元件的能力更是將來發展SOP(System on package)的重點材料之一，因此，本論文也嘗試將天線設計於陶瓷基板材料上面，並以各項實驗結果加以分析並且探討其特性。

    A novel planar monopole antenna with double-E slits is proposed for mobile communication system (GSM-900/DCS-1800/PCS-1900). The antenna consisting of two E-slits in a planar rectangular radiating patch is capable of multi-band operation. The E-slits can be used to adjust resonance frequencies for improving the impedance bandwidth of the antenna. The bandwidths for the lower and higher frequency are 14.6% and 34%, respectively. Details of the proposed design and experimental results will be presented and discussed.
    Moreover, since the ceramic materials are capable of integrate passive elements into active elements in addition to their good properties of microwave and allowance of environment. Hence, we will demonstrate the proposed antenna on ceramic substrate.

    中文摘要........................................V 英文摘要.......................................VI 誌謝......................................... VII 目錄.........................................VIII 表目錄....................................... XII 圖目錄.......................................XIII 第一章 序論.....................................1 　1.1 概論......................................1 　1.2 文獻導覽................................. 4 　1.3 天線設計方向............................. 6 　1.4 內容提要................................. 7 第二章 天線理論及特性.......................... 9 　2.1 天線簡介................................. 9 　2.2 天線各特性參數介紹.......................10 　　2.2.1 天線的輸入阻抗與電壓駐波比...........10 　　2.2.2 天線的極化...........................11 　　2.2.3 天線的增益與指向性...................17 　　2.2.4 天線輻射效率.........................20 　　2.2.5 天線的波瓣寬度.......................21 　2.3 偶極天線................................ 23 　　2.3.1 偶極天線理論.........................23 　　2.3.2 折疊型偶極天線.......................28 　2.4 單極天線.................................29 　　2.4.1 鏡像理論.............................29 　　2.4.2 單極天線理論.........................31 　　2.4.3 折彎折疊單極天線.....................32 　　2.4.4 單極天線的地板大小與輸入阻抗之關係...35 　　2.4.5 單極天線地板之大小與指向性的關係.....37 　2.5 雙頻以及寬頻操作的探討...................41 　　2.5.1 雙頻操作技術.........................41 　　2.5.2 寬頻操作技術.........................43 第三章 多頻雙E 型狹縫平板單極天線設計..........46 　3.1 概述.....................................46 　3.2 天線設計.................................47 　　3.2.1 天線設計概念.........................47 　　3.2.2 天線結構.............................48 　　3.2.3 輻射金屬片的尺寸設計.................50 　　3.2.4 輻射金屬片內部狹縫的設計.............51 　　3.2.5 接地面的影響.........................56 　　　3.2.5.1 輻射金屬片與接地面的距離.........56 　　　3.2.5.2 接地面的寬度影響.................58 　3.3 基板特性的影響...........................60 　　3.3.1 介電常數對天線之影響.................63 　　3.3.2 損耗正切值對天線特性的影響...........64 　　3.3.3 改變基板介質為DuPont 951材料.........66 　　3.3.4 改變基板介質為氧化鋁（Al2O3）板......71 第四章 模擬與實驗結果..........................77 　4.1 高頻模擬軟體HFSS簡介.....................78 　4.2 天線量測儀器簡介.........................81 　　4.2.1 網路分析儀...........................81 　　　4.2.1.1 誤差原因.........................81 　　　4.2.1.2 單埠的量測誤差原因及校正........ 82 　　　4.2.1.3 雙埠的量測誤差原因及校正........ 82 　　　4.2.1.4 儀器校正方式.....................83 　　4.2.2 頻譜分析儀...........................84 　　4.2.3 無反射實驗室.........................86 　4.3 以FR4 為基板的天線結構模擬及實驗結果.....87 　4.4 以氧化鋁為基板的天線結構模擬及實驗結果...96 第五章 結論...................................105 參考文獻......................................107

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