本論文提出適用於薄形手機之新型多頻天線設計，其設計主軸是以相同天線結構整合不同形式之系統接地面，利用不同技術來達成天線縮小化及多頻操作之目標。其中第一項天線設計，為整合U字形系統接地面之WWAN五頻操作，主要在低頻共振支路之適當位置中嵌入一晶片電感及使用匹配電路來達成天線縮小化技術；第二、三項天線則針對具有C字形系統接地面之薄形手機的設計，在第二項天線設計則引入「形塑接地面」技術，藉由改善接地面上表面電流分布來增加低頻頻寬，並搭配可重組電路元件組之設計技術，可在不增加天線尺寸的情況下，有效增加天線操作頻帶，可涵蓋LTE/WWAN八頻操作；第三項天線設計同樣藉由「形塑接地面」技術來增加低頻操作頻寬，同時整合螢幕支撐金屬板及電池金屬元件，採全平面式印刷設計，更符合薄形手機實際應用情形，在天線尺寸35 × 8 mm2大小下，可涵蓋LTE/WWAN七頻操作。此外，本論文也針對所提出之手機天線加入人體頭部及手部模型進行SAR模擬分析，以及助聽器相容性的分析。

In this dissertation, novel printed multiband antennas for slim mobile communication devices are presented. The design techniques on achieving decreased antenna size and enhanced operating bandwidth in different shaped system ground planes with the antennas printed thereon are proposed. At first, a WWAN antenna integrated with a U-shaped ground plane is presented. Two techniques are applied to achieve WWAN operation with a small antenna size. The first technique is to embed load a proper chip inductor at a proper position in the shorted strip monopole of the antenna. The second one is to use a band-stop matching circuit disposed on the main circuit board of the handset. For the second and third antenna designs, owing to the C-shaped ground plane, much enhanced operating bandwidth for their lower band can be obtained. The second antenna design can cover the LTE/WWAN eight-band operation without increasing the size of the antenna by using a reconfigurable circuit element. The third antenna design integrated with a battery element and a metal midplate for practical application to help reduce the thickness and enhance the robustness of handset. The antenna can cover seven-band LTE/WWAN operation with good radiation characteristics and occupy a small size of 35 x 8 mm2. Finally, the simulated SAR and HAC results are analyzed for bio-compatibility consideration.

目 錄 i
圖 次 iii
表 次 vi
第一章 序論 1
1.1 文獻導覽及設計構想 3
1.2 章節提要 4
第二章 整合手機系統接地面之WWAN手機天線設計 8
2.1 天線設計結構及技術原理說明 8
2.2 天線實驗與量測結果 11
2.3 心得與討論 20
第三章 可調式LTE/WWAN手機接地面天線設計 22
3.1 天線結構及技術原理說明 23
3.2 天線模擬與分析 26
3.3 延伸研究 35
3.4 心得與討論 38
第四章 LTE/WWAN手機接地面天線設計 39
4.1 天線結構及技術原理說明 40
4.2 天線實驗結果與分析 43
4.3 延伸研究 56
4.4 心得與討論 59
第五章 手機接地面天線之生物相容性研究 62
5.1 SAR測試及分析 62
5.2 HAC測試及分析 72
5.3 心得與討論 80
第六章 結論 83
參考文獻 86
個人發表著作/專利表 90

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