臺灣博碩士論文加值系統

本論文提出一種利用寄生槽縫增加頻寬之技術，使得內藏式筆記型電腦天線在螢幕接地面上方邊緣處之尺寸僅48 × 10 × 3.5 mm^3的情況下，形成一寬頻之低頻頻段來涵蓋GSM850/900系統操作，同時在高頻頻段亦可涵蓋GSM1800/1900/UMTS系統操作。為了實際之應用，我們以本論文提出之天線設計來探討天線位置、鄰近金屬片、屏蔽金屬片、鍵盤接地面、FR4基板及接地面尺寸對於天線的影響。此外，我們也分析了使用者全人體對於無線廣域網路天線的影響，由於人體是有損材質，所以當人體靠近天線時，會使得天線的輻射效率下降。

In this thesis, we propose a new bandwidth-enhancement method of using a parasitic open slot to achieve a wide lower band for the internal laptop computer antenna with a small size to cover the GSM850/900 operation and a wide upper band to cover the GSM1800/1900/UMTS operation as well. The occupied antenna volume is only 48 × 10 × 3.5 mm^3 above the top edge of the display ground. For practical application, we analyze the effects of the antenna position, nearby metal plate, shielding metal plate, keyboard ground, FR4 substrate, and the size of display ground on the performance of the WWAN antenna. In addition, effects of the user’s whole-body on the proposed antenna are also analyzed. Owing to the user’s whole-body being mainly lossy materials, a decrease in the antenna’s radiation efficiency is observed when the user’s whole-body is in close proximity to the WWAN laptop computer antenna.

文字目錄 i
圖形目錄 iii
表格目錄 v

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 筆記型電腦無線廣域網路天線設計 (WWAN Laptop Computer Antenna) 5
2.1 利用寄生槽縫增加頻寬之技術原理 5
2.2 實驗結果與參數分析 10
2.3 延伸研究 18
2.4 心得與討論 20

第三章 筆記型電腦內部環境對無線廣域網路天線的影響研究 (Effects of Internal Environment of the Laptop Computer on the WWAN Antenna) 22
3.1 天線擺放位置的影響 22
3.2 鄰近金屬片對天線的影響 23
3.3 屏蔽金屬片對天線的影響 25
3.4 鍵盤接地面對天線的影響 26
3.5 介質基板對天線的影響 29
3.6 螢幕接地面尺寸對天線的影響 31
3.7 心得與討論 32

第四章 使用者全人體對筆記型電腦無線廣域網路天線的影響研究 (Effects of User’s Whole-body on the WWAN Laptop Computer Antenna) 33
4.1 人體模型參數設定 33
4.2 人體對天線的影響 35
4.3 SAR模擬分析 40
4.4 心得與討論 43

第五章 結論 (Conclusions) 44

參考文獻 (References) 46

論文著作表 (Publication List) 49

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