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研究生:鄭至良
研究生(外文):Chih-Liang Cheng
論文名稱:應用於4G手機天線之設計
論文名稱(外文):Design of Antennas for 4G Mobile Handset Applications
指導教授:程光蛟孫卓勳孫卓勳引用關係
指導教授(外文):Kwong-Kau TiongJwo-Shiun Sun
學位類別:碩士
校院名稱:國立臺灣海洋大學
系所名稱:電機工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2012
畢業學年度:100
語文別:中文
論文頁數:78
中文關鍵詞:4G手機天線LTE單極天線PIFA
外文關鍵詞:4Gmobile phoneLTEmonopole antennaPIFA
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本論文提出兩種可應用於4G手機系統之天線,可滿足LTE、GSM、DCS、PCS、WCDMA、LTE 2300與LTE 2500規範之頻段。本研究所提出的天線均使用FR4為板材,具結構簡單的特色。本論文提出一平面單極天線,產生的諧振頻率分別涵蓋LTE 700 (698~787 MHz)/GSM 850 (824~ 894 MHz)/GSM 900 (880~960 MHz) service bands DCS 1800 (1710~1880 MHz)/PCS 1900(1850~1990 MHz)/WCDMA 2100 (1920~2170 MHz)/LTE 2300 (2305~2400 MHz)/LTE 2500 (2500~2690 MHz)。
首先探討天線的模擬和實際量測的比較圖,接著討論天線在各種結構參數下之反射係數,以及在共振頻率下的輻射場型及電流分佈,其結果證實了天線皆符合4G手機系統的要求,但現代手機對於天線的要求,是逐漸偏向於小型化,所以本論文另提出PIFA天線,此體積較小、匹配更佳,且皆涵蓋所需要之頻段。

We have proposed two types of built-in internal antennas implemented in 4G mobile handset for application in LTE700、GSM、DCS、PCS、WCDMA、LTE2300 and LTE2500 frequency bands. Both designs were printed on FR4 substrates and have the character of simple structure. The first design is a planar monopole antenna while the second design is a PIFA antenna which utilizes the principle of frequency multiplication to cover the “low band” for LTE 700(698~787 MHz)/GSM 850 (824~ 894 MHz)/GSM 900 (880~960 MHz) service bands and “high band” for DCS 1800 (1710~1880MHz)/PCS 1900 (1850 ~1990 MHz)/WCDMA 2100 (1920~2170 MHz)/LTE 2300 (2305~2400 MHz)/LTE 2500 (2500~2690 MHz) service bands.
Our focus is on the study of PIFA antenna because this design has the advantage of being more compact and should be more suited to the modern 4G mobile phone application. Furthermore, it has also been demonstrated that the PIFA antenna exhibits better return loss and can cover a wider bandwidth than the monopole antenna.

摘要 iii
Abstract iv
致謝 v
目錄 vi
圖目錄 ix
表目錄 xiii
第一章 1
序論 1
1.1 研究背景 1
1.2 研究動機與目的 3
1.3 文獻回顧 4
1.4 論文概述 5
第二章 天線理論 7
2.1 偶極天線(Dipole Antenna) 8
2.2 單極天線(Monopole Antenna) 12
2.3 極化與場型(Polarization and Pattern) 14
2.4 內置式隱藏天線探討 19
2.5 內置式單極天線 20
第三章 應用於4G手機之平面單極天線設計 22
3.1 天線設計 22
3.2 實驗結果與討論 26
3.3 相關參數探討 38
3.3.1 平面單極天線隨a參數變化 39
3.3.2 平面單極天線隨c參數變化 40
3.3.3 平面單極天線隨e參數變化 42
3.3.4 平面單極天線隨L3參數變化 43
第四章 應用於4G手機之PIFA天線設計 45
4.1 天線設計 45
4.2 實驗結果與討論 49
4.3 相關參數探討 59
4.3.1 多頻PIFA天線隨L4參數變化 60
4.3.2 多頻PIFA天線隨L6參數變化 61
4.3.3 多頻PIFA天線隨L7參數變化 63
4.3.4 多頻PIFA天線隨L9參數變化 64
4.3.5 多頻PIFA天線隨L12參數變化 66
4.3.6 多頻PIFA天線隨L13參數變化 67
第五章 結論 69
參考文獻 71

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