應用Yagi天線於IEEE 802.11智慧型天線系統之研製

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廖國瑞(Raymond Liao) 查詢紙本館藏

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通訊工程學系在職專班

論文名稱

應用Yagi天線於IEEE 802.11智慧型天線系統之研製
(Design and Implementation of IEEE 802.11 Smart Antenna System Using Yagi Antennas)

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摘要(中)

本論文研製一個具有2.4GHz頻帶圓盤型雙偶極天線的改良，利用Yagi(八木天線)的原理讓天線產生具有方向性波束(Directional Beam)，分別研製水平四根擺放負責水平極化四個象限，以及垂直四根擺放負責垂直極化四個象限，進而去組合而成一個垂直跟水平共八個象限的類似圓極化天線，使它可涵蓋各個方向的覆蓋率，可滿足智慧型天線系統的應用。這是一種原理簡單、製作容易、成本低廉，利用電子業常廣泛應用的印刷電路板去結合而成的天線，天線本體總共有三片PCB去組合而成的圓盤天線，具有組裝跟生產容易，體積為88.44 × 88.44 × 41.6 mm3。詳細的天線設計及實驗數據將在本論文中說明及討論。

摘要(英)

This thesis is the implementation of a modified dipole antenna designed on circular disk at frequency 2.4GHz band. By using the principle of Yagi antenna, the directional beam is generated. Four antennas were developed to cover four quadrants at horizontal polarization, and another four antennas were developed to cover four quadrants at vertical polarization. They could be combined into an antenna with a total of eight quadrants radiation pattern including vertical and horizontal polarization similar to circularly polarized antenna. It covers all directions to meet the application of Smart Antenna System. This is a simple, easy-making, low-cost method to use printed circuit board for this implementation. The circular Yagi antenna assembled with three PCBs and the size is about 88.44 × 88.44 × 41.6 mm3. Detail content of the antenna design and experiment result is discussed in this paper.

關鍵字(中)

★ 八木天線
★ 智慧型天線

關鍵字(英)

★ YAGI
★ Smart Antenna

論文目次

目錄
摘要 iv
Abstract v
致謝 vi
目錄 vii
圖目錄 viii
表目錄 xiii
第一章緒論 1
1-1 研究動機 1
1-2 無線網路IEEE 802.11簡介 2
1-3 YAGI天線的簡介 7
1-4 論文架構 9
第二章智慧型天線系統應用於無線網路 10
2-1 智慧型天線技術概念 10
2-2 智慧型天線的效能比較 11
2-3 智慧型天線發射技術的優勢 17
第三章 Yagi智慧型天線模擬設計與結果 18
3-1 YAGI智慧型天線設計架構 18
3-2 YAGI智慧型天線的模擬設計結果 20
第四章 Yagi智慧型天線實作與效能量測 32
4-1 YAGI智慧型天線的實作過程 32
4-2 YAGI智慧型天線的實際量測結果 35
第五章結論 70
附錄 71
參考文獻 73

參考文獻

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指導教授

許獻聰

審核日期

2014-7-29

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