臺灣博碩士論文加值系統

本論文中提出二支可應用於無線區域網路802.11 a/b/g之印刷式天線，而且這二支印刷式天線的板材皆為FR4印刷電路板，第一支印刷式天線使用了倒F型天線的幾何結構，另一支則是使用共平面波導饋入的單極天線。
第一支印刷式天線在矩形接地面耦合之後產生雙寬頻的阻抗頻寬及足夠的阻抗頻寬給無線區域網路系統使用，結構上不同於以往的印刷式倒F型天線；第二支印刷式天線也在改變矩形接地面的參數之後具有多頻的效果，不但有足夠的頻寬給予無線區域網路系統使用，還可以應用到數位通訊系統(DCS)、個人通訊服務(PCS)、及寬頻分碼多工存取(WCDMA)等頻段。

Two printed antennas on FR4 Printed Circuit Board for Wireless LAN 802.11 a/b/g application are presented in this thesis. One is based on the geometric architecture of an Inverted-F antenna; and the other is based on CPW-Fed monopole antenna.
The first printed antenna differs from the conventionally printed Inverted-F antenna in that it is constructed with coupling with a rectangular ground plane. The modification results in a dual wide impedance bandwidth and is shown to be adequate for Wireless LAN system application. The second printed antenna by adjusting the parameters of the rectangular ground plane has been shown to contain multi-band character. The design has been illustrated to be applicable not only in Wireless LAN System but also for implementation in DCS, PCS, and WCDMA applications.

目 錄

中文摘要 i
英文摘要 ii
誌謝 iii
目錄 iv
表目錄 vi
圖目錄 vii
第一章 緒論 1
1.1 研究背景 1
1.2 研究動機與目的 1
1.3 無線區域網路系統簡介 3
1.4 論文綱要 5
第二章 天線原理與概述 7
2.1 平面倒F型天線的演進 7
2.1.1 傳統單極天線 7
2.1.2 倒L型單極天線 7
2.1.3 倒F型單極天線 10
2.1.4 平面倒F型天線 12
2.2 印刷式倒F型天線 17
2.3 積體化倒F型天線 21
2.4 共平面波導 23
2.4.1 饋入的方式 23
2.4.2 共平面波導饋入之印刷式天線 25
第三章 具矩形接地面之印刷式倒F形天線 27
3.1 具矩形接地面之印刷式倒F形天線 27
3.1.1 矩形接地面參數之探討 29
3.2 二階階梯狀的天線幅射體 35
3.2.1 矩形接地面參數之探討 36
3.3 三階階梯狀的天線幅射體 44
3.3.1 矩形接地面參數之探討 44
第四章 共平面波導饋入之印刷式單極天線 55
4.1 印刷式單極天線之天線幾何結構設計 55
4.1.1 左右二側矩形接地面參數之探討 57
第五章 結論 68
參考文獻 70

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