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研究生： 陳甫玹
Fu-syuan Chen
論文名稱： 應用於射頻模組與筆記型電腦之微型化天線設計
Design of Miniaturized Antenna for RF Module and Laptop Computer Applications
指導教授： 楊成發
Chang-Fa Yang
口試委員: 林漢年
none
曾昭雄
none
廖文照
none
胡泉淩
none
學位類別： 碩士
Master
系所名稱： 電資學院 - 電機工程系
Department of Electrical Engineering
論文出版年： 2011
畢業學年度： 99
語文別： 中文
論文頁數： 133
中文關鍵詞： 微型天線 、晶片天線 、倒L天線 、倒F天線 、WLAN 、WWAN
外文關鍵詞： Miniature antenna, Chip antenna, Inverted-L antenna, Inverted-F antenna, WLAN, WWAN
相關次數： 點閱：333  下載：2 
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    • 本論文針對2.4 GHz、WLAN以及WWAN之應用頻段分別設計四款微型化天線，其不僅體積小，且輻射效能佳，並可內建於射頻模組以及筆記型電腦中，具有高度的商業價值。第一款為操作於2.4 GHz之微型化倒L晶片天線並搭配匹配電路來提高天線之電氣性能。第二款為微型化倒F晶片天線，操作頻段為2.4 GHz，其利用平板式倒F天線架構並搭配短路腳控制輸入阻抗，使天線達到較佳的電氣性能，且上述兩款設計皆不需要任何的天線淨空區，有助於減少電路板之浪費以及提高模組內其他電路佈局之自由度，達到最小化模組開發。第三款天線為應用於WLAN頻段之微型化倒F天線，利用倒F天線架構搭配多重共振路徑並經由短路腳控制輸入阻抗，藉此激發多組共振而產生較寬的操作頻寬以符合WLAN應用頻段之需求。最後，第四款天線為適用於WWAN頻段之微型化倒F天線，採用正背板之佈局方式產生多重共振路徑而激發多組共振以達到寬頻的響應，其工作原理與第三款天線相似。本論文所提出之四款天線不僅體積小且輻射效能佳，而基板皆使用低成本之FR4搭配印刷電路板技術，因此可以有效地降低成本以及製程之困難度，適合內建於射頻模組以及筆記型電腦中，具有高度的商業價值。

    This thesis proposes four kinds of miniature antennas for 2.4 GHz, WLAN (Wireless Local Area Network) and WWAN (Wireless Wide Area Network) applications, respectively. All of four antennas have a compact size and good radiation performance so that can built in RF module or laptop computer and suitable for commercial applications. The first design is about an inverted-L chip antenna using match network to improve the antenna performance which operating frequency is 2.4 GHz. The second antenna design is miniature planar inverted-F chip antenna for 2.4 GHz operation. It is based on a planar inverted-F structure and using shorted pin to adjust the input impedance, so that can optimization the antenna performance. Both antennas does not require any empty space so that can reduce waste and improve layout space of another circuit in the RF module. Using this antenna design can achieve minimize development of RF module. The third design is inverted-F antenna for WLAN application. This antenna using planar inverted-F structure and multiple resonance paths to excited more than one resonance frequency, therefore the antenna has a wide bandwidth for WLAN application. The final design is inverted-F antenna for WWAN application. It is similar to third design but the radiator is layout on different plane in the same PCB. Consequently the proposed designs fabricated on FR4 substrate to lower cost so that can integration into RF module or laptop computer and suitable for commercial applications.

    摘要……………………………………………………………………………………I ABSTRACT…………………………………………………………………………II 目錄…………………………………………………………………………………III 圖目錄………………………………………………………………………………V 表目錄………………………………………………………………………………X 第一章 緒論…………………………………………………………………………1 1.1 前言…………………………………………………………………………1 1.2 研究動機……………………………………………………………………2 1.3 章節概述……………………………………………………………………3 第二章 倒L與倒F天線概論…………………………………………………………4 2.1 前言…………………………………………………………………………4 2.2 倒L與倒F天線概述.………………………………………………………4 2.3 立體式倒L與倒F天線分析與探討.………………………………………8 2.3.1 倒L天線輸入阻抗之探討與分析.…………………………………8 2.3.2 平板式倒F天線之分析.……………………………………………21 2.4 平面式倒L與倒F天線探討………………………………………………30 2.5 小結…………………………………………………………………………37 第三章 2.4 GHz微型化晶片天線設計………………………………………………38 3.1 前言…………………………………………………………………………38 3.2 微型化倒L晶片天線………………………………………………………39 3.2.1天線架構及其工作原理……………………………………………39 3.2.2 匹配電路對於倒L天線之影響………………………………………43 3.2.3 微型化倒L晶片天線模擬與量測結果……………………………49 3.3 微型化倒F晶片天線………………………………………………………54 3.3.1 天線架構及其工作原理……………………………………………54 3.3.2 微型化倒F晶片天線共振頻率之參數分析………………………60 3.3.3 天線支撐物與短路腳對於天線影響之參數分析…………………64 3.3.4 天線測試板大小與LCP對於天線之影響…………………………69 3.3.5微型化倒F晶片天線模擬與量測結果………………………………72 3.4 小結…………………………………………………………………………78 第四章 應用於筆記型電腦之倒F天線設計…………………………………………79 4.1 前言…………………………………………………………………………79 4.2 WLAN倒F天線設計………………………………………………………80 4.2.1 WLAN天線架構及其工作原理………………………………………80 4.2.2 WLAN倒F天線共振頻率之參數分析…………………………………85 4.2.3 天線短路腳以及組裝位置對於天線影響之參數分析……………91 4.2.4 WLAN倒F天線模擬與量測結果…………………………………95 4.3 WWAN倒F天線設計………………………………………………………105 4.3.1 WWAN天線架構及其工作原理……………………………………105 4.3.2 WWAN倒F天線共振頻率之參數分析……………………………110 4.3.3 天線短路腳以及組裝位置對於天線影響之參數分析……………114 4.3.4 WWAN倒F天線模擬與量測結果…………………………………118 4.4 小結…………………………………………………………………………128 第五章 結論…………………………………………………………………………129 參考文獻………………………………………………………………………………130

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