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研究生： 林俊佑
Lin, Jun-Yu
論文名稱： 利用共平面波導饋入設計應用於雙頻、超寬頻之天線
design of CPW-fed slot antennas for dual- and ultra wide-band operation
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： 2009
畢業學年度： 97
語文別： 中文
論文頁數： 66
中文關鍵詞： 超寬頻 、雙頻 、天線 、共平面饋入
外文關鍵詞： dual band, ultra wide band, antenna, CPW-fed
相關次數： 點閱：72  下載：3 
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    • 　　本論文利用共平面波導饋入結構，設計分別應用於WLAN與UWB頻段的天線。利用電感式槽孔混合單極天線作法，分別達到WLAN所需的頻段，單極天線主要用來激發出WLAN所需的低頻部份，而電感式槽孔則是激發高頻部份，且均有良好的阻抗匹配，激發出兩個頻段2.4/5.5GHz，涵蓋WALN所需要的範圍2.4GHz ~ 2.475GHz與5.15GHz ~ 5.85GHz，天線最大輻射增益達到2.84dBi/5.85dBi。另外在UWB部份，由一個六邊形的寬槽孔與一個梯形單線天線所組成。50 線饋入一個梯形單極天線，再藉由調整六邊形槽孔的參數設定，可以達到UWB所要求3.1GHz ~ 10.6GHz的要求，具有超寬頻、良好增益與輻射場形等優點。

    　　In this paper, the use of coplanar waveguide feed structure, a design used in WLAN and UWB band antenna. The use of inductive Slot-Monopole hybrid antenna to achieve WLAN band, monopole antenna is mainly used to stimulate the low-frequency part of the required of WLAN, and inductive slot is to stimulate high-frequency part of WLAN, have a good impedance matching, 2.4/5.5GHz dual-band excitation, WALN needed to cover the scope of 2.4GHz ~ 2.475GHz and 5.15GHz ~ 5.85GHz, maximum radiation gain of the antenna 2.84dBi/5.85dBi. Another part of the UWB, composed of a hexagonal slot and a wide trapezoidal monopole. A hexagonal slot antenna is excited by a 50-Ω CPW with a wide trapezoidal monopole, adjusting the parameters of hexagonal slot configuration, can achieve the required UWB requirements 3.1GHz ~ 10.6GHz, with ultra-wideband, good gain and radiation field.

    中文摘要...............................................................................................................IV 英文摘要................................................................................................................V 誌謝.................................................................................................................. VI 目錄.................................................................................................................VII 圖目錄.............................................................................................................. IX 表目錄.............................................................................................................. XI 第一章 序論..................................................................................................... 1 1.1 前言...................................................................................................... 1 1.2 相關研究.............................................................................................. 4 1.3 論文概要.............................................................................................. 5 第二章 基本理論............................................................................................... 6 2.1 共平面波導的輸入阻抗匹配................................................................. 6 2.2 天線的特性與參數的介紹.................................................................... 9 2.2.1 輻射場型(radiation pattern) ......................................................... 9 2.2.2 天線指向性和增益....................................................................11 2.2.3 天線的輻射效率、品質因素和頻寛......................................... 15 2.3 單極天線理論..................................................................................... 18 2.4 槽孔天線............................................................................................ 20 2.4.1 槽孔天線簡介........................................................................... 20 2.4.2 槽孔天線設計理論................................................................... 21 第三章 設計應用於WLAN 頻段共平面波導饋入天線.................................... 23 3.1 概述.................................................................................................... 23 3.2 天線設計............................................................................................ 25 3.2.1 天線設計概念........................................................................... 25 3.2.2 天線結構.................................................................................. 25 3.2.3 設計電感式槽孔....................................................................... 27 3.2.4 L 形單極天線............................................................................ 29 3.2.5 F 形單極天線............................................................................ 32 3.2.6 L 形單極天線外加寄生元件...................................................... 35 3.3 實驗及量測結果................................................................................. 39 3.3.1 電感式槽孔F 形單極天線........................................................ 39 3.3.2 電感式槽孔L 形天線附加寄生元件......................................... 43 3.4 結論.................................................................................................... 47 第四章 設計應用於UWB 共平面波導饋入天線.............................................. 48 4.1 概述.................................................................................................... 48 4.2 天線設計............................................................................................ 49 4.2.1 天線設計概念............................................................................ 49 4.2.2 天線架構.................................................................................. 50 4.2.3 設計梯形單極天線................................................................... 51 4.2.4 設計六邊形寬槽孔................................................................... 53 4.3 實驗及模擬結果................................................................................. 56 4.4 結論.................................................................................................... 61 第五章 結論..................................................................................................... 62 參考文獻.......................................................................................................... 63

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    chapter_2

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    chapter_4

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