本文中提出二種寬頻槽孔手機天線的創新設計，其適用於槽孔天線置於系統接地面之底端區間，可滿足WWAN的五頻操作頻帶及LTE/WWAN的八頻操作頻帶，同時具有良好的輻射特性，且槽孔天線面積僅分別約50 × 4 mm2及53 × 4 mm2。本天線設計其一利用C形金屬部連接至接地面底端，使接地面整體結構近似於較為對稱之短路偶極天線，進而激發接地面模態改善操作頻帶的頻寬；其二為使用一具有晶片電感負載旁支路的饋入微帶線，使得槽孔內部電場分佈更為均勻而改善低頻頻寬，且因晶片電感的存在形成低通電路而不影響原有的高頻頻寬，旁支路亦使得高頻操作頻帶較低頻頻率的阻抗匹配獲得改善，而增加操作頻寬。本文同時探討使用者手部及頭部對於手機天線所造成的不同影響。同時，也對於本天線設計的SAR及HAC值進行模擬分析與探討。

In this thesis, two novel broadband slot mobile phone antenna designs respectively for penta-band WWAN operation and eight-band LTE/WWAN operation are presented. The antennas are suitable to be mounted near the bottom edge of the system ground plane of the mobile phone. Good radiation characteristics for the antennas are obtained, and the two antennas respectively occupy a small printed area of 50 × 4 mm2 and 53 × 4 mm2. The first design uses a C-shaped strip connected to the bottom edge of the system ground plane to make the structure of the system ground plane close to a symmetric shorted dipole antenna. This makes it promising to excite a chassis mode to enhance the operating bandwidth of the antenna. The second one uses a microstrip feedline having a chip-inductor-loaded branch. The novel microstrip feedline can lead to more uniform distribution of the electric fields excited in the slot such that enhanced bandwidth of the antenna’s lower band is obtained. Further, since the chip inductor performs like a low-pass filter, the original bandwidth of the antenna’s upper band is not affected. Additionaly, the impedance matching of the lower frequencies of the upper band can be improved, which enhances the upper-band bandwidth of the antenna. Effects of the user’s head and hand on the proposed antenna are also studied, and the simulated SAR and HAC issues are also analyzed in this thesis.

文字目錄 i
圖形目錄 iii
表格目錄 v

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

第二章 運用C形金屬部激發接地面模態增加操作頻寬的槽孔手機天線
(Using a C-Shaped Strip to Excite a Chassis Mode to Enhance Operating Bandwidth of the Slot Mobile Phone Antenna)
2.1 C形金屬部激發的接地面模態 4
2.2 天線設計與原理 7
2.3 實驗結果與分析 9
2.3 心得與討論 17

第三章 運用一具有晶片電感負載旁支路的饋入微帶線以增加操作頻寬的槽孔手機天線 (Using a Microstrip Feedline Having a Chip-Inductor-Loaded Branch to Enhance Operating Bandwidth of the Slot Mobile Phone Antenna)
3.1 天線設計與原理 18
3.2 實驗結果與分析 21
3.3 心得與討論 27

第四章 天線之生物相容性研究 (Results of the Antenna’s Bio-compatibility Study)
4.1 SAR測試方式與規範 30
4.2 使用者手部與頭部對手機天線的影響 33
4.3 HAC測試方式與規範 38
4.4 模擬結果與分析 40
4.5 心得與討論 42

第五章 結論 (Conclusions) 43

參考文獻 (References) 45

論文著作表 (Publication List) 48

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