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博碩士論文 etd-0010118-151640 詳細資訊
Title page for etd-0010118-151640
論文名稱
Title
應用於2 × 2 LTE LB及4 × 4 LTE M/HB MIMO操作之金屬邊框手機天線設計研究
MIMO Antennas in the Metal-Framed Smartphone for 2 × 2 LTE LB and 4 × 4 LTE M/HB MIMO Operations
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
116
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
2018-01-06
繳交日期
Date of Submission
2018-01-10
關鍵字
Keywords
4 × 4 MIMO、MIMO天線、LTE天線、2 × 2 MIMO、金屬邊框智慧型手機天線、行動裝置天線
LTE antennas, MIMO antennas, metal-framed smartphone antennas, Mobile antennas, 2 × 2 MIMO, 4 × 4 MIMO
統計
Statistics
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中文摘要
本論文提出應用於2 × 2 LTE LB及4 × 4 LTE M/HB操作之金屬邊框智慧型手機之MIMO多天線設計研究。MIMO多天線僅配置於手機之兩短邊,在不需要外加隔離元件且天線開縫皆遠離角落的情況下,具有良好的隔離度及封包相關係數,能應用於MIMO多天線系統提高傳輸速率,同時降低使用者手握對天線特性的影響。首先提出LTE MIMO雙天線設計,搭配饋入網路,可以達成在兩短邊應用於2 × 2 LTE LB MIMO和2 × 2 LTE M/HB MIMO的操作。接著更進一步在相同淨空區高度下,提出LTE MIMO四天線設計,搭配適當的饋入電路,可以達成在兩短邊應用於2 × 2 LTE LB和4 × 4 LTE M/HB MIMO的操作,有效增加通道容量,提升傳輸速率。然而在窄淨空區的設計環境中難以用單一天線直接涵蓋所需之LTE LB完整頻寬,考慮到完整頻帶的應用需求,大多會使用主動切換電路來達成,而為了能在不影響LTE M/HB天線特性下更獨立調整LTE LB,故將LTE LB天線架構獨立出來設計,提出最後的LTE MIMO六天線設計。其中,單一短邊三天線中間的短路結構除了為兩個LTE M/HB天線的隔離結構,同時也為LTE LB天線的主要共振路徑,藉由導引兩個LTE M/HB天線的接地面表面電流,可以降低兩天線的隔離度,同樣可達成在兩短邊應用於2 × 2 LTE LB和4 × 4 LTE M/HB MIMO的操作。最後,則會將六天線設計應用於超大螢幕(更窄淨空區)手機中,並針對此配置環境作多天線性能參數的探討。
Abstract
In this thesis, MIMO antennas in the metal-framed smartphone for 2 × 2 LTE LB and 4 × 4 LTE M/HB MIMO operations are presented. All antennas are only disposed at the short edges of the smartphone, and acceptable isolation and low envelope correlation coefficients (ECCs) can be obtained with no external decoupling structures. Moreover, all gaps used to separate different antennas are disposed away from the short-edge corners so that the user’s hand holding effects can be significantly decreased. At first, the design with two LTE antennas for 2 × 2 LTE MIMO operation is presented. The two antennas are disposed at the top and bottom edges of the smartphone, respectively. Both antennas can cover LTE L/M/HB. Then, the second design with four LTE MIMO antennas disposed at the same short edges is presented. Two of the four antennas can cover LTE L/M/HB, and the other two antennas can cover LTE M/HB. The four antennas can thus be applied for 2 × 2 LTE LB MIMO and 4 × 4 LTE M/HB MIMO operations. Finally, in order to easily tune the antenna’s LB to cover whole LTE LB bandwidth with small variations in the antenna’s LTE M/HB, the third design with six LTE MIMO antennas is presented. The six antennas are also only disposed at the top and bottom edges of the smartphone, with a ground clearance of 5 mm only. Four of the six antennas can cover LTE M/HB, and the other two antennas can cover LTE LB. In the six-antenna design, acceptable isolation between two nearby LTE M/HB antennas can be obtained owing to the decoupling structure of the LTE LB antenna disposed therebetween. The six antennas can therefore be applied for the 2 × 2 LTE LB and 4 × 4 LTE M/HB MIMO operations. Finally, the six-antenna design is applied for the large- display-panel smartphone with a narrower ground clearance of 2 mm only. Results of the MIMO antenna performances with such a very narrow ground clearance are discussed.
目次 Table of Contents
論文審定書 i
論文公開授權書 ii
致謝 iii
內頁 v
中文摘要 vi
英文摘要 vii
目錄 viii
圖次 ix
表次 xv

第一章 序論 (Introduction) 1
1.1 研究動機 1
1.2 文獻導覽 2
1.3 論文提要 3

第二章 應用於2 × 2 LTE MIMO之金屬邊框手機天線設計 (MIMO Antennas in the Metal-Framed Smartphone for 2 × 2 LTE MIMO Operation) 7
2.1 天線結構介紹與操作機制說明 8
2.2 天線模擬及實驗量測結果分析 14
2.3 延伸研究 19
2.4 心得與討論 25

第三章 應用於2 × 2及4 × 4 LTE MIMO之金屬邊框手機四天線設計 (Four MIMO Antennas in the Metal-Framed Smartphone for 2 × 2 and 4 × 4 LTE MIMO Operations) 26
3.1 天線結構介紹與操作機制說明 26
3.2 多天線之MIMO效能分析 34
3.3 心得與討論 39

第四章 應用於2 × 2及4 × 4 LTE MIMO之金屬邊框手機六天線設計(I) (Six MIMO Antennas in the Metal-Framed Smartphone for 2 × 2 and 4 × 4 LTE MIMO Operations (I)) 41
4.1 三天線結構介紹與操作機制說明 42
4.2 相關參數分析 55
4.3 天線實驗量測結果及MIMO效能分析 60
4.4 六天線結構介紹及MIMO效能分析 63
4.5 心得與討論 71

第五章 應用於2 × 2及4 × 4 LTE MIMO之金屬邊框手機六天線設計(II) (Six MIMO Antennas in the Metal-Framed Smartphone for 2 × 2 and 4 × 4 LTE MIMO Operations (II)) 73
5.1 更窄淨空區之六天線延伸設計及MIMO性能參數分析 73
5.2 延伸設計 80
5.3 心得與討論 87

第六章 結論 (Conclusions) 89

參考文獻 (References) 94

論文著作表 (Publication List) 99
參考文獻 References
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