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博碩士論文 etd-0524106-163442 詳細資訊
Title page for etd-0524106-163442
論文名稱
Title
應用於行動通訊裝置之內藏式電磁相容天線
EMC Internal Antennas for Mobile Communication Devices
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
128
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2006-05-20
繳交日期
Date of Submission
2006-05-24
關鍵字
Keywords
使用者的手、行動電話天線、行動通訊裝置天線、內藏式天線、電磁相容天線
Mobile phone antennas, User's hand, Mobile communication device antennas, EMC antennas, Internal antennas
統計
Statistics
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The thesis/dissertation has been browsed 5731 times, has been downloaded 0 times.
中文摘要
本論文提出一系列的電磁相容天線設計,針對目前內藏式行動通訊裝置天線與鄰近電子元件因電磁耦合影響造成設計困難之問題,或需具有一隔離間距才能應用之難題,提出良好之解決方案。與傳統天線設計最大的不同之處,在於增加了一具有屏蔽電磁場作用的天線接地面,能有效隔離天線與鄰近元件間的電磁耦合,不僅天線在阻抗匹配上不受鄰近元件影響,連各項輻射特性包含場型、增益與效率也幾乎沒有改變。另外電磁相容天線的概念亦可應用至單極天線設計中,使得設計出來的天線可適用於未來薄型(< 10 mm)行動通訊裝置內部。除此之外本論文也進一步分析了使用者手部握住行動通訊裝置時對電磁相容天線特性的影響。從研究結果發現,即使手部握在行動通訊裝置底部,也會造成輻射效率有大幅度的衰減,與傳統天線之特性相似,並且在GSM頻段會有較大的衰減量。
Abstract
In this dissertation, EMC antennas for mobile communication device applications are proposed. This kind of EMC antennas can overcome the problem that happens to the conventional antenna; in practical application, when electronic components are placed very close to the conventional antenna, large degradation of the antenna performance will occur. In the proposed EMC antennas, by adding a vertical antenna ground plane functioning as a shielding metal wall, EM coupling between the EMC antenna and nearby components can be reduced. Thus, it leads to no degradation or only negligible variations of the antenna performance. Also, the concept of EMC antennas can be applied to the monopole antenna. One of the examples suitable for the future thin (< 10 mm) mobile communication device is demonstrated. Further, the user’s hand effects on EMC antenna performance are analyzed. Even when the mobile phone is hand-held at the bottom, large radiation efficiency drops are observed, especially for the GSM band.
目次 Table of Contents
文字目錄 i
圖形目錄 iii
第 一 章 序 論 (Introduction) 1
1.1 研究動機 1
1.2 論文提要 2
第 二 章 適用於GSM/DCS手機之內藏平面式電磁相容天線 (EMC Internal Planar GSM/DCS Mobile Phone Antenna) 4
2.1 天線設計原理 4
2.2 實驗結果與分析 6
2.3 心得與討論 24
第 三 章 適用於雙模UMTS與WLAN操作之內藏平面式電磁相容天線 (EMC Internal Planar Antenna for UMTS and WLAN Dual-Mode Operation) 25
3.1 天線設計原理 25
3.2 實驗結果與分析 29
3.3 心得與討論 37
第 四 章 適用於UMTS操作之內藏式電磁相容金屬片晶片天線 (EMC Internal Metal-Plate Chip Antenna for UMTS Operation) 38
4.1 天線設計原理 38
4.2 實驗結果與分析 41
4.3 心得與討論 53
第 五 章 與U形屏蔽金屬盒整合之內藏式電磁相容UMTS平板天線 (EMC Internal UMTS Patch Antenna Integrated with a U-Shaped Shielding Metal Case) 55
5.1 天線設計原理 55
5.2 實驗結果與分析 58
5.3 心得與討論 65
第 六 章 適用於薄型行動通訊裝置之GSM/DCS內藏式電磁相容短路單極晶片天線 (EMC Internal GSM/DCS Shorted Monopole Chip Antenna for Thin Mobile Communication Device) 67
6.1 天線設計原理 68
6.2 實驗結果與分析 71
6.3 心得與討論 83
第 七 章 使用者手部對GSM/DCS手機內藏式電磁相容天線之影響 (User’s Hand Effects on EMC Internal GSM/DCS Mobile Phone Antenna) 84
7.1 實驗模型 84
7.2 實驗結果與分析 91
7.3 心得與討論 100
第 八 章 結 論 (Conclusion) 101
參考文獻 (References) 103
個人著作表 (Publication List) 107
參考文獻 References
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