臺灣博碩士論文加值系統

本論文以行動手持式裝置之多頻帶天線為主要研究方向，分別為
兩支應用於智慧型手機與一支應用於平板電腦天線。分別以單極天線
(Monopole antenna)與槽孔天線(Slot antenna)作為天線主要架構設
計。
第一支天線為應用於智慧型手機天線， 可操作在LTE
700/2300/2500 (698~787 、2300~2400 、2500~2690 MHz) 、GSM
850/900/1800/1900 (824~894、890~960、1710~1880、1850~1990 MHz)、
UMTS 2100 (1920~2170 MHz)以及WLAN 2400 (2400~2488 MHz)。
此設計三分支單極天線(Monopole antenna)為主要架構，加入匹配電
容與短路支，將部分天線設置立體架構以減少整體天線尺寸，天線總
體積為70×

This thesis focuses on multi-band antennas for handheld devices
including smart phones and tablet computer. There are three
antennas proposed in this research. The main structures of the
antennas are monopole antenna and slot antenna.
The first antenna is a multi-band antenna for smart phone. It
can provide LTE 700/2300/2500 (698~787, 2300~2400, 2500~2690
MHz), GSM 850/900/1800/1900 (824~894, 890~960, 1710~1880,
1850~1990 MHz), UMTS 2100 (1920~2170 MHz) and WLAN 2400
(2400~2488 MHz). The antenna consists of three branches monopole
antenna and a shorting strip with a matching capacitor. In order to
reduce the overall antenna size, a 3-dimensional structure is designed.
The volume of the proposed antenna is 70×8×3

第 一 章 緒論 1
1.1研究動機 1
1.2 文獻導覽 2
1.3 章節介紹 3
第二章 天線理論 4
2.1天線基本理論 4
2.1.1天線原理 4
2.1.2天線特性 6
2.1.3阻抗匹配 9
2.2天線介紹 11
2.2.1偶極天線 11
2.2.2 四分之一波長單極天線 12
2.2.3 槽孔天線(Slot antenna) 13
第三章 應用於 LTE/WWAN之低剖面智慧型手機天線 15
3.1 概述 15
3.2 天線設計結構與操作原理 16
3.2.1天線設計結構與流程 16
3.2.2 天線操作原理 21
3.3 天線參數分析與探討 24
3.3.1 倒L型立體架構延伸長度L1之影響 24
3.3.2 T型左分支長度L2之影響 25
3.3.3接地短路支之長度L3之影響 26
3.4 模擬與量測結果 27
3.5 結論 32
第四章 應用於 LTE/WWAN 之雙寬頻平板電腦天線 33
4.1 概述 33
4.2天線設計結構與操作原理 33
4.2.1天線設計結構與流程 33
4.2.2天線操作原理 37
4.3 天線參數分析與探討 41
4.3.1 匹配電感感值L變化的影響 41
4.3.2 Branch_2長度L2變化的影響 42
4.3.3立體架構H變化的影響 43
4.4 模擬與量測結果 44
4-5 結論 48
第五章 應用於Sub-6GHz多輸入多輸出手機天線 50
5.1概述 50
5.2天線設計結構與操作原理 50
5.2.1天線設計結構與流程 50
5.2.2天線操作原理 54
5.3 天線參數分析與探討 55
5.3.1 開路槽孔天線間隙G之S11變化 55
5.3.2 寄生短支長度L之S11變化 56
5.4 模擬與量測結果 56
5-5 結論 62
第 六 章 總結 64
參考文獻 66

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