本篇論文提出一個平板電腦裝置天線陣列設計，可滿足無線廣域網路及長期演進技術多輸入多輸出系統的操作頻帶。此項天線陣列包括一個具耦合式饋入的WWAN/LTE八頻天線及一個LTE三頻天線，且兩個天線間均具良好的隔離特性，使得天線陣列可達成LTE 多輸入多輸出系統操作；同時探討內藏式平板電腦裝置天線對於人體的影響，經由分析結果可知，藉由選定天線與人體測試模型間的適當距離，可通過現行人體電波能量吸收的標準規範(每一克組織小於1.6 W/kg)。此外，由於人體組織具損耗性，所以當平板電腦裝置鄰近於人體時，會對其內藏式天線的輻射效率有明顯的影響。

A tablet computer antenna array for WWAN/LTE and LTE MIMO operations is proposed. The antenna array comprises a main antenna and an auxiliary antenna. The main antenna is an eight-band coupled-fed antenna, which can cover the GSM850/900/1800/1900/UMTS and LTE700/2300/2700 operations. The auxiliary antenna is a three-band antenna, which can cover the LTE700/2300/2500 operation and occupies a small size. Acceptable isolation between the main and auxiliary antennas has also been obtained, which makes it promising for the main and auxiliary antennas to perform LTE MIMO operation in the LTE700/2300/2500 bands. Effects of the internal tablet computer antenna on the user’s body are also studied. The obtained results show that the antenna can meet the 1-g body SAR specification of less than 1.6 W/kg by selecting a proper distance between the antenna and the flat phantom. Also, since the user’s body is a lossy material, a decrease in the antenna’s radiation efficiency is observed when the user’s body is in the vicinity of the internal antenna.

文字目錄
文字目錄 i
圖形目錄 iii
表格目錄 v
第一章 序論 (Introduction) 1
1.1 概述 1
1.2 文獻導覽 2
1.3 論文提要 3
第二章 具耦合式饋入之WWAN/LTE八頻平板電腦裝置天線設計 (Tablet Computer Antenna with a Coupling Feed for Eight-Band WWAN/LTE Operation) 6
2.1 天線設計與原理 6
2.2 實驗結果與分析 8
2.3 心得與討論 16
第三章 平板電腦裝置LTE三頻天線設計及天線陣列設計 (Tablet Computer LTE Antenna and Antenna Array) 18
3.1 平板電腦裝置LTE三頻天線設計與原理 18
3.2 實驗結果與分析 21
3.3 平板電腦裝置天線陣列設計原理與分析 28
3.4 心得與討論 35
第四章 平板電腦裝置天線近場輻射對於人體電波能量吸收研究 (Body SAR Analysis of Near-Field Radiation of the Tablet Computer Antenna) 36
4.1 平板電腦裝置人體電波能量吸收規範介紹 36
4.2 WWAN/LTE八頻天線設計的人體電波能量吸收測試分析 39
4.3 LTE三頻天線設計的人體電波能量吸收測試分析 43
4.4 心得與討論 46
第五章 結論 (Conclusion) 48
參考文獻 (References) 50
論文著作表 (Publication List) 54
圖形目錄
圖2-1 平板電腦裝置WWAN/LTE八頻天線設計：(a)天線結構圖；(b)詳細尺寸圖。 7
圖2-2 本天線設計量測與模擬之返回損失圖。 9
圖2-3 本天線設計之操作原理分析模擬比較圖。 10
圖2-4 變化參數d對本天線設計之返回損失模擬比較圖。 11
圖2-5 變化參數t對本天線設計之返回損失模擬比較圖。 11
圖2-6 變化參數p對本天線設計之返回損失模擬比較圖。 12
圖2-7 本天線設計於740/859/925/1795 MHz模擬之3D遠場輻射場型。 14
圖2-8 本天線設計於1920/2045/2350/2595 MHz模擬之3D遠場輻射場型。 15
圖2-9 本天線設計於LTE700/GSM850/900頻帶模擬之增益與輻射效率。 16
圖2-10 本天線設計於GSM1800/1900/UMTS/LTE2300/2500頻帶模擬之增益與輻射效率。 16
圖3-1 平板電腦裝置LTE三頻天線設計：(a)天線結構圖；(b)詳細尺寸圖。 19
圖3-2 本天線設計量測與模擬之返回損失圖。 21
圖3-3 本天線設計與參考天線模擬比較之(a)返回損失圖；(b)輸入阻抗圖。 22
圖3-4 變化參數t之返回損失模擬比較圖。 23
圖3-5 變化參數d之返回損失模擬比較圖。 24
圖3-6 變化參數w之返回損失模擬比較圖。 24
圖3-7 變化系統接地面長度L之返回損失模擬比較圖。 25
圖3-8 變化系統接地面寬度W之返回損失模擬比較圖。 25
圖3-9 本天線設計於LTE700頻帶模擬之增益及輻射效率。 26
圖3-10 本天線設計於LTE2300/2500頻帶模擬之增益及輻射效率。 26
圖3-11 本天線設計於740/2350/2595 MHz模擬之3D遠場輻射場型。 27
圖3-12 平板電腦裝置天線陣列之結構圖。 28
圖3-13 本項天線陣列模擬之S參數圖。 29
圖3-14 WWAN/LTE八頻天線設計模擬之表面電流分佈圖 (a)操作頻率為830 MHz；(b)操作頻率為2200 MHz。 30
圖3-15 LTE三頻天線設計模擬之表面電流分佈圖(a)操作頻率為740 MHz；(b)操作頻率為2400 MHz。 31
圖3-16 本項天線陣列與五種參考天線陣列之S11模擬比較圖。 32
圖3-17 本項天線陣列與五種參考天線陣列之S22模擬比較圖。 32
圖3-18 (a)本項天線陣列、參考天線陣列一、參考天線陣列二及參考天線陣列三之S12模擬比較圖；(b)本項天線陣列、參考天線陣列四及參考天線陣列五之S12模擬比較圖。 33
圖3-19 (a)本項天線陣列、參考天線陣列一、參考天線陣列二及參考天線陣列三之相關係數模擬比較圖；(b)本項天線陣列、參考天線陣列四及參考天線陣列五之相關係數模擬比較圖。 34
圖4-1 平板電腦裝置之人體電波能量吸收模擬模型：(a)人體測試模型；(b)底面配置示意圖；(c)橫立配置示意圖；(d)直立配置示意圖。 37
圖4-2 平板電腦裝置八頻天線設計置於金屬擋牆前方之示意圖。 40
圖4-3 平板電腦裝置三頻天線設計置於金屬擋牆前方之示意圖。 44
表格目錄
表4-1 WWAN/LTE八頻頻段內外殼及組織液之介電係數與導電率。 38
表4-2 人體電波能量吸收測試輸入功率及系統發射最大功率。 38
表4-3 八頻天線設計變化參數s於底面配置之人體電波能量吸收模擬值。 41
表4-4 八頻天線設計變化參數g於上橫立配置之人體電波能量吸收模擬值。 41
表4-5 八頻天線設計變化參數d於上直立配置之人體電波能量吸收模擬值。 42
表4-6 三頻天線設計變化參數s於底面配置之人體電波能量吸收模擬值。 44
表4-7 三頻天線設計變化參數g於上橫立配置之人體電波能量吸收模擬值。 45
表4-8 三頻天線設計變化參數d於上直立配置之人體電波能量吸收模擬值。 46

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