臺灣博碩士論文加值系統

本論文將提出兩款適用於金屬邊框之手機天線設計以及一金屬背蓋探討，天線操作頻段包含無線廣域網路(WWAN, Wireless Wide Area Network)中GSM 850/900 (824-894/880-960 MHz)、DCS (1710-1880 MHz)、PCS (1850-1990 MHz)、UMTS (1920-2170 MHz)，LTE 2300/2500 (2300-2690 MHz)七個頻段以及LTE 3500 (3400-3600 MHz)頻段。第一款天線設計，具有匹配網路之單極路徑為主路徑，利用其耦合的影響，使地面一延伸之倒-U形路徑以及一延伸長路徑來達到所需的工作頻段；第二款為可調頻之槽孔天線設計，為雙天線設計，工作於同一開槽孔上，在兩單極天線上，皆具有匹配網路，以兩單極天線激發於基板底部的開槽孔，達到七頻加上5G工作頻段之應用，並且能夠單以其中一電感來控制低頻頻段之切換，這樣的頻段切換並不會影響到高頻之天線特性；此外，將以第一款天線與金屬背蓋做整合，不同材質之背蓋對於天線特性之影響進行討論。模擬與實驗結果證實，本論文所提出天線設計具有良好的性能。

In this thesis, two antenna designs for mobile phone with metal-frame and metal-case applications are proposed. The proposed antennas can operate in the GSM850/900/DCS/PCS/UMTS/LTE 2300/2500, and LTE3500 bands. The first design uses a monopole antenna with matching circuit for the resonant strip. By using the coupling effect between two resonant strips, the inverted U-shaped strip from the ground plane and the extended strip, the sufficient bandwidths for GSM850/900/DCS/PCS/UMTS/LTE2300/2500 applications can be reached. The second antenna is a dual-antenna design and operates on the same open-slot. This antenna design can adjust different operating bands by one inductance. By the way, the high-band will not be affected when we switch the low-band. Moreover, the related designs for the first antenna with the metal-case are proposed. The influence of the metal-case with different materials on the first antenna are also analyzed and discussed. The simulated and measured results demonstrate that the proposed antennas have good performances.

目錄
摘　要 i
ABSTRACT ii
致謝 iii
目錄 iv
圖目錄 v
表目錄 ix
第一章 序論 1
1.1 概述 1
1.2 文獻導覽 5
1.3 內容摘要 6
第二章 多模態天線設計應用於金屬邊框之移動式通訊裝置 7
2.1 概述 7
2.1.1 單極天線 10
2.1.2 低姿態單極天線設計與金屬邊框的影響 11
2.2 應用於WWAN/LTE七頻之金屬邊框型手機天線 14
2.2.1 實驗結果與分析 17
第三章 雙天線設計應用於金屬邊框之移動式通訊裝置 44
3.1 概述 44
3.1.1 槽孔天線 47
3.1.2 混合型天線設計與可調頻式天線設計 49
3.2 可調式開槽孔雙天線設計應用於WWAN/LTE之金屬邊框型手機 51
3.2.1 實驗結果與分析 54
第四章 金屬架構對天線之影響與解決方案 83
4.1 概述 83
4.1.1 金屬機構對天線相關影響 84
4.2 應用於WWAN/LTE之金屬機構型手機天線設計 85
4.2.1 實驗結果與分析 88
第五章 結論 106
參考文獻 108

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