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博碩士論文 etd-0523115-161205 詳細資訊
Title page for etd-0523115-161205
論文名稱
Title
低姿勢開槽孔LTE手機天線設計及其MIMO效能研究
Low-Profile Open-Slot LTE Smartphone Antenna and Its MIMO Performance Study
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
88
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
2015-06-07
繳交日期
Date of Submission
2015-06-23
關鍵字
Keywords
被動可重組式天線、MIMO天線、LTE天線、槽孔天線、手機天線、開槽孔天線、低姿勢天線
LTE antennas, slot antennas, open slot antennas, Low-profile antennas, mobile antennas, passively reconfigurable antennas, MIMO antennas
統計
Statistics
本論文已被瀏覽 5763 次,被下載 42
The thesis/dissertation has been browsed 5763 times, has been downloaded 42 times.
中文摘要
本論文提出兩種適用於金屬機殼手機之低姿勢槽孔天線設計,其可在天線高度僅為7或5 mm下涵蓋LTE頻帶(698~960/1710~2690 MHz),其中第一項天線設計為一種天線高度僅7 mm,且可與USB接頭作整合的低姿勢雙饋入雙倒L形開槽孔天線,首先,其利用一較長以及一較短的倒L形開槽孔分別於低頻及高頻產生一四分之一波長槽孔共振模態,再經由低、高頻饋入端各加入一組匹配電路增加其頻寬,使其可達成雙寬頻LTE操作;第二項天線設計提出一種使用被動元件之可重組式LTE開槽孔天線設計,其天線高度僅5 mm,且使用一個簡單倒L形雙開口槽孔天線做為天線的主結構,並透過在主槽孔結構內嵌入一電感及電容元件來分別被動重組低、高頻槽孔共振路徑,此時可於低、高頻帶內產生槽孔共振模態,使得我們可進一步將第一天線設計的雙倒L形槽孔結構簡化為單一倒L形槽孔結構,接著配合匹配電路的使用,改善天線的操作頻寬,以涵蓋LTE雙寬頻操作。最後,則將本論文中所提出的天線設計擺放於手機兩短側邊上形成一雙天線MIMO系統,並針對所提出之雙天線系統的特性進行一系列的研究及討論。
Abstract
Two different kinds of low-profile open-slot antenna to achieve a low profile of 7 and 5 mm, respectively, to cover the LTE operation (698~960/1710~2690 MHz) in the smartphone, especially the metal-casing smartphone, are demonstrated. The first antenna which shows a low profile of 7 mm to the top or bottom edge is a low-profile slot antenna that can be integrated with the USB connector. In this design, the antenna consists of one longer inverted-L (IL) open slot and one shorter IL open slot and is excited by the first and second feeds, respectively, to generate the fundamental (0.25-wavelength) resonant modes at the low and high bands. By adding wideband matching circuits in the first and second feeds, the antenna can provide two wide operating bands covering the 698~960 MHz and 1710~2690 MHz bands. The second antenna which has a very low profile of 5 mm uses one IL slot with two open ends as the main structure, with a distributed inductor and a chip capacitor embedded therein. The embedded circuit elements can passively reconfigure the resonant slot paths of the IL slot to generate multiple slot resonant modes in the low and high bands. In this case, the first antenna structure can be simplified from two IL open slots to only one IL open slot and also cover the desired LTE bands with the aid of the wideband matching circuit. Finally, two antennas of the first or second design are placed respectively at the top and bottom edges of the system ground plane for the 2 2 LTE MIMO operation. The MIMO performance of these designs are studied and discussed.
目次 Table of Contents
論文審定書 i
致謝 ii
中文摘要 iii
英文摘要 iv
目錄 v
圖次 vii
表次x
第一章 序論 (Introduction) 1
1.1 研究動機 1
1.2 文獻導覽 2
1.3 論文各章節提要 3
第二章 雙寬頻雙倒L形開槽孔LTE手機天線設計 (Dual-Wideband Dual-Inverted-L Open-Slot Antenna for the LTE Smartphone) 6
2.1 天線結構及技術原理說明 6
2.2 天線實驗與量測結果 9
2.3 延伸設計 19
2.4 心得與討論 22
第三章 使用被動電路元件之可重組式LTE手機開槽孔天線設計 (Reconfigurable Open-Slot Antenna using Passive Circuit Elements Embedded Therein for the LTE Smartphone) 24
3.1 天線結構及技術原理說明 25
3.2 模擬結果與參數分析 34
3.3 延伸設計 38
3.4 心得與討論 43
第四章 槽孔LTE手機天線之MIMO效能及使用者手部影響之模擬研究分析 (Simulation Study of MIMO Performance and User’s Hand Effects of the Slot Antenna for the LTE Smartphone) 44
4.1 自由空間雙天線封包相關係數與通道容量分析 45
4.2 考量使用者手碰觸及手握之模擬研究分析 60
4.3 心得與討論 69
第五章 結論 (Conclusions) 70
參考文獻 (References) 74
論文著作表 (Publication List) 77
參考文獻 References
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