臺灣博碩士論文加值系統

本論文提出可應用於 5G 頻段的天線設計。2 × 2 MIMO天線利用手機的上下半部的各一轉角進行設計，搭配可切換之匹配電路及採用Loop及Monopole 等兩種形式的天線設計，以操作於多個頻段上。實測低/中頻段之天線增益及天線效率分別為 -1 / 3.5 dBi 及 -4.5 / -2 dB；第三章則提出兩款應用於5G-NR手機的8 × 8 MIMO天線設計，利用手機四周的邊框進行設計，將相同天線鏡像後形成一組天線，再將四組天線分別置於手機的四個邊框上，以提高天線間的隔離度，其長邊框上的天線增益及天線效率分別為-2 /- 1.5 dBi及 -2 / -2 dB，短邊框上的天線增益及天線效率分別為-3.5 / -1 dBi及 -3 / -2.5 dB，並探討其 channel capacity、ECC等MIMO參數。

This thesis proposes antenna designs suitable for the 5G frequency spectrum. A 2 × 2 MIMO antenna is designed using angular orientations on the smartphone's upper and lower halves. It incorporates switchable matching circuits and utilizes loop and monopole antenna configurations across various frequencies. Measured gains and efficiencies for the low/meddle bands are -1 / 3.5 dBi and -4.5 / -2 dB, respectively.Then third hapter introduces two 8 × 8 MIMO antenna designs specifically tailored for 5G-NR smartphones. These designs utilize the smartphone's perimeter edges for their implementation strategy. By mirroring the same antennas, a set of antennas is created. These antenna sets are then individually placed on each of the smartphone's four edges to enhance the isolation between antennas. On the longer edges, the antenna gains and efficiencies are -2 / -1.5 dBi and -2 / -2 dB, respectively. On the shorter edges, the antenna gains and efficiencies are -3.5 / -1 dBi and -3 / -2.5 dB. Additionally, an in-depth exploration of the channel capacity, ECC, and other MIMO parameters is undertaken for these antenna designs.

文字目錄
頁次
中文摘要 i
英文摘要 ii
致謝 iii
文字目錄 v
表格目錄 vii
圖形目錄 viii
第一章 前言 (Introduction)
1.1 研究背景 1
1.2 MIMO系統及其相關參數介紹 2
1.3 文獻導覽 3
1.4 論文章節提要 4
第二章 應用於5G-NR手機之2 × 2 MIMO天線設計 (2 × 2 MIMO Antenna Design for 5G-NR Mobile Phone)
2.1 簡介 6
2.2 天線設計 7
2.3 實驗結果與分析 9
第三章 應用於5G-NR手機之8 × 8 MIMO天線設計 (8 × 8 MIMO Antenna Design for 5G-NR Mobile Phone)
3.1 簡介 26
3.2 天線設計(一) 27
3.3 實驗結果與分析 (一) 28
3.4 天線設計(二) 54
3.5 實驗結果與分析 (二) 55
第四章 結論 (Conclusions) 85
參考文獻 (References) 87
 
表格目錄
頁次
表2.1 應用於5G-NR手機之2 × 2 MIMO天線相關設計參數 8
表3.1 應用於5G-NR手機之8 × 8 MIMO天線相關參數 (Proposed-1) 30
表3.2 應用於5G-NR手機之8 × 8 MIMO天線相關參數 (Proposed-2) 54
表3.3 長邊框及短邊框上天線相互搭配之MIMO量測結果 84
表3.4 同為長邊框及短邊框上天線之MIMO量測結果 84


圖形目錄
頁次
圖2.1 應用於5G-NR手機之2 × 2 MIMO天線整體架構圖 9
圖2.2 應用於5G-NR手機之2 × 2 MIMO天線實體成品圖 10
圖2.3 MIMO 天線模擬與實測結果比較圖 11
圖2.4 MIMO天線實測結果比較圖 12
圖2.5 天線加入切換電路之等效電路圖 13
圖2.6 MIMO 天線加入切換電路之實測結果圖 13
圖2.7 MIMO天線表面電流分布圖 15
圖2.8 不同饋入網路設計之輸入阻抗模擬比較圖 16
圖2.9 MIMO天線分析結構圖 17
圖2.10 不同設計之輸入阻抗模擬比較圖 17
圖2.11 MIMO天線隨不同U型路徑的長度變化之模擬比較圖 18
圖2.12 MIMO 天線隨不同 L6 長度變化之模擬比較圖 19
圖2.13 天線應用於折疊式手機之結構比較圖 20
圖2.14 天線應用於折疊式手機之模擬比較圖 21
圖2.15 天線效率及天線增益之實測比較圖 22
圖2.16 使用電路切換後之天線效率及天線增益實測圖 23
圖2.17 2D遠場輻射場型比較圖 24
圖2.18 3D遠場輻射場型實測圖 25
圖3.1 應用於5G-NR手機之8 × 8 MIMO天線整體架構圖
(Proposed-1) 28
圖3.2 應用於5G-NR n77/n78/n79之手機 8 × 8 MIMO天線實體
成品圖 (Proposed-1) 29
圖3.3 位於長邊框之5G-NR天線的模擬與實測比較圖 30
圖3.4 長邊框上的四款5G-NR天線之反射損失與隔離度實測比較圖 31
圖3.5 位於短邊框之5G-NR天線的模擬與實測比較圖 32
圖3.6 短邊框上的四款5G-NR天線之反射損失與隔離度實測比較圖 33
圖3.7 單一天線 (@ Port A) 之電流分布圖 35
圖3.8 在不同端埠之5G-NR天線隨W1寬度變化的模擬比較圖 38
圖3.9 在不同端埠之5G-NR天線隨S1寬度變化的模擬比較圖 39
圖3.10 在不同端埠之5G-NR天線隨S2寬度變化的模擬比較圖 41
圖3.11 在不同端埠之5G-NR天線隨S3寬度變化的模擬比較圖 43
圖3.12 在不同端埠之5G-NR天線隨S4寬度變化的模擬比較圖 44
圖3.13 在不同端埠之5G-NR天線隨θ2角度變化的模擬比較圖 47
圖3.14 長邊框上5G-NR天線之天線效率及天線增益實測比較圖 48
圖3.15 短邊框上5G-NR天線之天線效率及天線增益實測比較圖 49
圖3.16 2D 輻射場型比較圖 (@ Port A) 50
圖3.17 2D 輻射場型比較圖 (@ Port B) 50
圖3.18 2D 輻射場型比較圖 (@ Port C) 51
圖3.19 2D 輻射場型比較圖 (@ Port D) 51
圖3.20 8 × 8 MIMO 天線之 3D 輻射場型實測圖 53
圖3.21 應用於5G-NR手機之8 × 8 MIMO天線整體架構圖
(Proposed-2) 55
圖3.21 應用於5G-NR n77/n78/n79之手機 8 × 8 MIMO天線實體
成品圖 (Proposed-2) 56
圖3.23 位於長邊框之5G-NR天線的模擬與實測比較圖 57
圖3.24 長邊框上的四款5G-NR天線之反射損失與隔離度實測比較圖 58
圖3.25 位於短邊框之5G-NR天線的模擬與實測比較圖 59
圖3.26 短邊框上的四款5G-NR天線之反射損失與隔離度實測比較圖 60
圖3.27 單一天線 (@ Port A) 之電流分布圖 62
圖3.28 不同擺放方式分析結構圖 63
圖3.29 不同擺放方式之模擬比較圖 66
圖3.30 在不同端埠之5G-NR天線隨L2長度變化的模擬比較圖 68
圖3.31 MIMO天線應用於折疊式手機之結構比較圖 69
圖3.32 MIMO天線應用於摺疊手機之模擬比較圖 72
圖3.33 不同解耦合設計之結構圖 73
圖3.34 不同解耦合設計之模擬比較圖 75
圖3.35 長邊框上5G-NR天線之天線效率及天線增益實測比較圖 76
圖3.36 短邊框上5G-NR天線之天線效率及天線增益實測比較圖 77
圖3.37 2D 輻射場型比較圖 (@ Port A) 78
圖3.38 2D 輻射場型比較圖 (@ Port B) 78
圖3.39 2D 輻射場型比較圖 (@ Port C) 79
圖3.40 2D 輻射場型比較圖 (@ Port D) 79
圖3.41 8 × 8 MIMO天線之3D輻射場型實測圖 81
圖3.42 8 × 8 MIMO天線之ECC實測結果圖 82
圖3.43 MIMO天線量測現場圖 83

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