本論文提出一種內藏式手機天線設計，可與USB接頭作整合，且同時滿足LTE/WWAN八頻所需之操作頻寬。本天線設計具有一天線接地面，該天線接地面位於一突出接地面之上方，該突出接地面之一端與主接地面相連接並用於配置USB接頭。本天線設計藉由將天線接地面設計為短路路徑，並短路至突出接地面上，可有效降低兩者間之電容耦合效應，使其可與配置於突出接地面上之USB接頭作整合，達成天線在手機內部的整合設計。本天線具有良好之輻射特性，且體積僅需60 × 12 × 4.8 mm3 (約3.4 cm3)。除了分析天線之輻射特性外，同時也探討人體頭部與手部效應對天線輻射特性的影響。此外，也針對本天線設計之SAR與HAC特性進行一系列的模擬和分析，並討論近場的輻射特性。

An internal eight-band LTE/WWAN handset antenna integrated with a USB connector is presented. The proposed antenna comprises an antenna ground which faces a protruded ground extended from the main ground of the handset to accommodate a USB connector. The antenna ground is used as a shorting portion to short-circuit the antenna to ground such that the coupling between the antenna ground and the protruded ground is effectively suppressed. In this case, the proposed antenna can be integrated with a USB connector mounted on the protruded ground, leading to compact integration of the antenna inside the handset. Good radiation characteristics of the antenna are also obtained, and the proposed antenna occupies 60 × 12 × 4.8 mm3 (about 3.4 cm3) only. Effects of the user’s head and hand on the proposed antenna are studied, and the simulated SAR and HAC results are also analyzed in this thesis.

目錄 i
圖次 iii
表次 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 與USB接頭整合之手機天線與其應用於LTE/WWAN之操作 (Internal Handset Antenna Integrated with USB Connector and its Application for LTE/
WWAN Operation) 5
2.1天線接地面之技術概念 5
2.2天線結構與技術說明 6
2.3 天線實驗結果與分析 10
2.4 延伸研究 20
2.5 心得與討論 22
第三章 頭部與手部效應對於天線輻射特性之影響及SAR分析 (Effects of User’s Head and Hand on the Radiation Characteristics of the Antenna and the
SAR analysis) 23
3.1手機SAR值測試方式設計 24
3.2使用者頭部與手部對於天線之影響 26
3.3考慮使用者頭部與手部之SAR研究與分析 31
3.4 心得與討論 36
第四章 手機天線之助聽器相容性的模擬研究分析 (Simulation Study of Hearing Aid Compatibility for the Antenna) 38
4.1 HAC測試規範簡介 39
4.2出音孔位置對於HAC值影響之分析 42
4.3測試平面位置變化與近場場量之相關性探討 46
4.4心得與討論 48
第五章 結論 (Conclusion) 49
參考文獻 (References) 52
論文著作表 (Publication List) 56
圖次

圖2.1 天線接地面配置示意圖。 6
圖2.2 本項天線設計結構示意圖：(a)八頻LTE/WWAN手機天線設計結構圖；
(b)手機天線設計平面展開圖及詳細尺寸。………………………………….7
圖2.3 雙耦合式環圈天線結構示意圖。 8
圖2.4 本發明天線實際製作圖片。 9
圖2.5 本天線設計返回損失模擬及量測結果圖。 10
圖2.6 本天線設計和參考結構之模擬結果比較圖：(a)返回損失圖；(b)參考結
構示意圖。 11
圖2.7 本天線設計變化晶片電感L值之模擬返回損失圖。 13
圖2.8 本項天線設計變化晶片電感L值於低頻頻帶之史密斯圖。 13
圖2.9 本項天線設計變化晶片電感L值於高頻頻帶之史密斯圖。 14
圖2.10 本天線設計變化金屬彎折部寬度a之模擬返回損失圖。 16
圖2.11 本天線設計變化金屬部長度b之模擬返回損失圖。 16
圖2.12 本項天線設計在頻率為740 MHz、925 MHz、1795MHz、2045 MHz及
2400 MHz之三維遠場輻射場型量測圖。 18
圖2.13 (a)本天線設計操作在LTE700/GSM850/900頻帶之量測輻射效率與增益；(b)本天線設計操作在GSM1800/1900/UMTS/LTE2300/2500頻帶之量測輻射效率與增益。 19
圖2.14 參考結構4：將USB接頭擺放於天線接地面與突出接地面之間。 20
圖2.15 USB接頭擺放於天線接地面與突出接地面間之模擬返回損失圖。 21
圖3.1 本天線設計使用HFSS與SEMCAD模擬返回損失比較圖。 25
圖3.2 使用者頭部和手部模型與手機天線相對位置示意圖。 26
圖3.3 天線置於手機頂端時，考慮頭部與手部之模擬淨輻射效率圖。 28
圖3.4 天線置於手機底部時，考慮頭部與手部之模擬淨輻射效率圖。 29
圖3.5 859 MHz時，考慮頭部及天線擺放位置之3-D場型圖。………………..30
圖3.6 天線在頂端，僅考慮頭部模型時之SAR強度模擬圖。 33
圖3.7 天線在頂端，同時考慮頭部與手部模型時之SAR強度模擬圖。 34
圖3.8 天線在底部，僅考慮頭部模型時之SAR強度模擬圖。 35
圖3.9 天線在底部，並同時考慮頭部與手部模型時之SAR強度模擬圖。 36
圖4.1 HAC量測示意圖：(a)上視圖；(b)側視圖。 40
圖4.2 ANSI CS-63.19-2007之近電磁場等級歸類圖。 41
圖4.3 出音孔位置A與B於859 MHz與1795 MHz時，其天線與接地面表面電
流分佈圖。 44
圖4.4 出音孔位置A與B於859 MHz與1795 MHz時，其近場電場及磁場場量
分佈圖。 45
圖4.5 測試平面距離d變化與近場電磁場場量比較圖。 47

表次

表3.1 IEEE Standard 1528使用者頭部模擬模型相關組織材料參數列表。 24
表3.2 本設計測試採用之使用者頭部與手部模型相關組織材料參數列表。 25
表3.3 人體效應對本天線設計淨輻射效率之影響比較-天線置於手機頂端。 28
表3.4 人體效應對本天線設計輻射效率之影響比較-天線置於手機底部。 28
表3.5 SAR測試輸入功率及系統功率對照表。 32
表3.6 天線設計於頂端時的SAR1g模擬結果表。 32
表3.7 天線設計於底部時的SAR1g模擬結果表。 34
表4.1 HAC歸類換算對照表。 39
表4.2 HAC測試輸入功率表。 42
表4.3 出音孔位置為A、B、C及D點時之模擬測試HAC 值表。 42
表4.4 出音孔B離測試平面不同距離之模擬HAC 值。 46

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