臺灣博碩士論文加值系統

在無線網路通訊，需要能進行收發訊號的天線。隨著科技進步，手機頻段從早期GSM 900/1800(2G)到現在智慧型手機普遍使用的多媒體傳輸UMTS 2100(3G)以及正在發展的LTE 700/900/1800/2600(4G)。本論文提出應用於LTE之多頻段單極天線研究，此天線為三頻頻帶，設計原理主要結合G型單極天線和L型單極天線，藉由兩種形狀不同的單極天線激發頻率的方式來完成。首先利用G型單極天線架構共振出700MHz/1800MHz 模態，再由加入L型單極天線架構增加共振路徑長度，另外產生2600MHz 模態，設計頻帶為LTE700/1800/2600。本論文應用HFSS模擬軟體驗證，並進行實作量測，結果呈現出700MHz、1800MHz、2600MHz皆包含於頻帶中。

Antenna device needs to be able to send and receive signals in wireless network communications. As technology advances, Mobile band from the early GSM 900/1800 (2G) and now widely used cellphone multimedia transmission UMTS 2100 (3G) and is developing LTE 700/900/1800/2600 (4G). This paper presents the multiband antennas applicable for LTE, this antenna have three- frequency band, the main design principles combined with G-type monopole antenna and L-type monopole antenna, with two different shapes monopole excitation frequency to complete. First, use of G-type monopole antenna structure resonance of 700MHz/1800MHz modal, then by adding L-shaped monopole antenna structure to increase the resonance path length, in addition to produce 2600MHz modal. The design frequency bands are for LTE 700/1800/2600. The simulator HFSS is employed for simulation and results show that 700/1800/2600MHz are included in the band.

摘要................................................................I
Abstract...........................................................II
致謝............................................................. III
目錄..............................................................IV
圖目錄.............................................................VI
表目錄...........................................................VIII
第一章 前言.........................................................1
1.1研究背景....................................................1
第二章 單極天線理論.................................................4
2.1偶極天線與單極天線的簡介....................................4
2.2偶極天線....................................................4
2.3鏡像原理....................................................8
2.4單極天線...................................................11
2.5計算50Ω傳輸線線寬的方法..................................12
第三章 LTE設計概念................................................14
3.1研究簡述...................................................14
3.2 G型單極天線...............................................15
3.3 L型單極天線...............................................17
3.4 C型單極天線...............................................19
3.5 S型單極天線...............................................21
第四章 天線設計與模擬..............................................23
4.1研究概述...................................................23
4.2 LTE多頻段單極天線之設計...................................24
4.2.1 LTE 多頻段單極天線之設計..............................24
4.2.2 LTE 多頻段天線分為三種不同架構進行模擬與比較..........25
4.3模擬與實作量測的比較.......................................35
4.4結果與討論.................................................45
第五章 結論........................................................46
參考文獻...........................................................48

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