臺灣博碩士論文加值系統

具有帶拒的超寬頻天線在本論文中被出提。藉由在本壘板形輻射金屬片上接上一對直角金屬殘段以及插入一個倒U形槽孔，而直角金屬殘段的長度約為帶拒中心頻率的0.2波長，在天線的操作頻段上產生2-GHz及5-GHz的帶拒頻段。有關於天線的設計與實驗，我們將在第二章以及第三章中詳細地介紹

Design of rubber-shaped ultra-wideband antenna with the band-notched characteristic is presented. By attaching the two stubs to the rubber-shaped patch to be about 0.2λ at the desired notched frequency and by inserting an inverted U-shape slot on the rubber-shaped patch, the two notched frequency bands in the 2-GHz and 5-GHz within the antenna’s operating bandwidth can be easily achieved. Details of the proposed design and experimental results of the constructed antennas are presented in Chapter 2 and Chapter 3.

第一章 序論（Introduction）1
1.1 研究動機　1
1.2 文獻導覽 2
1.3 內容提要 2
第二章 具有單一帶拒頻段之本壘板形超寬頻天線設計
（Design of rubber-shaped UWB antenna with a band-notch in 5 GHz）4
2.1概述 4
2.2天線設計 5
2.3實驗結果 6
2.4分析與討論 11
第三章 具有雙帶拒頻段之超寬頻本壘板形天線設計
（Design of rubber-shaped UWB antenna with dual band-notch in 2.4/5 GHz）24
3.1概述 24
3.2天線設計 24
3.3實驗結果 25
3.4分析與討論 28
第四章 結論（Conclusions）41
參考文獻（References）43


圖 形 目 次
頁次
圖2.1 具有單一帶拒頻段的本壘板形超寬頻天線之幾何結構圖。 13
圖2.2 具有單一帶拒頻段的本壘板形超寬頻天線變動參數n時的電壓駐波比對頻率比較圖 14
圖2.3 具有單一帶拒頻段的本壘板形超寬頻天線變動參數m時的電壓駐波比對頻率比較圖 15
圖2.4 具有單一帶拒頻段的本壘板形超寬頻天線變動參數s時的電壓駐波比對頻率比較圖 16
圖2.5 具有單一帶拒頻段的本壘板形超寬頻天線變動參數k時的電壓駐波比對頻率比較圖 17
圖2.6 使用Ansoft HFSS模擬軟體，在4/5.228/8 GHz時的電流分佈圖；天線結構參數如圖2.2所示。 18
圖2.7 具有單一帶拒頻段的本壘板形超寬頻天線與無帶拒頻段的本壘板形超寬頻天線的電壓駐波比對頻率比較圖 19
圖2.8 具有單一帶拒頻段的本壘板形超寬頻天線與無帶拒頻段的本壘板形超寬頻天線於4 GHz時的遠場輻射場型比較圖 20
圖2.9 具有單一帶拒頻段的本壘板形超寬頻天線與無帶拒頻段的本壘板形超寬頻天線於5.228 GHz時的遠場輻射場型比較圖 21
圖2.10 具有單一帶拒頻段的本壘板形超寬頻天線與無帶拒頻段的本壘板形超寬頻天線於8 GHz時的遠場輻射場型比較圖 22
圖2.11 具有單一帶拒頻段的本壘板形超寬頻天線的天線增益圖 23
圖3.1 具有雙帶拒頻段的本壘板形超寬頻天線之幾何結構圖。 30
圖3.2 具有雙帶拒頻段的本壘板形超寬頻天線變動參數q時的電壓駐波比對頻率比較圖 31
圖3.3 具有雙帶拒頻段的本壘板形超寬頻天線變動參數p時的電壓駐波比對頻率比較圖 32
圖3.4 使用Ansoft HFSS模擬軟體，在1.8/2.5/4/5.65/8 GHz時的電流分佈圖；天線結構參數如圖3.2所示。 33
圖3.5 本壘板形超寬頻天線與具有雙帶拒頻段的本壘板形超寬頻天線的電壓駐波比對頻率比較圖 34
圖3.6 具有雙帶拒頻段的本壘板形超寬頻天線於1.8 GHz的遠場輻射場型圖 35
圖3.7 具有雙帶拒頻段的本壘板形超寬頻天線於2.5 GHz的遠場輻射場型圖 36
圖3.8 具有雙帶拒頻段的本壘板形超寬頻天線於4 GHz的遠場輻射場型圖 37
圖3.9 具有雙帶拒頻段的本壘板形超寬頻天線於5.65 GHz的遠場輻射場型圖 38
圖3.10 具有雙帶拒頻段的本壘板形超寬頻天線於8 GHz的遠場輻射場型圖 39
圖3.11 具有雙帶拒頻段的本壘板形超寬頻天線的天線增益圖 40


表 格 目 次
頁次
表2.1 改變直角金屬殘段長度n的帶拒觀察表。 7
表2.2 改變直角金屬殘段長度m的帶拒觀察表。 8
表2.3 改變直角金屬殘段寬度s的帶拒觀察表。 9
表2.4 改變直角金屬殘段位置k的帶拒觀察表。 10
表2.5 Multi-band OFDM Physical Layer Proposal for IEEE 802.15.3a。 11
表3.1 改變直角金屬殘段長度q的帶拒觀察表。 26
表3.2 改變直角金屬殘段長度p的帶拒觀察表。 27

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