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研究生: 林松鋒
研究生(外文): Lin Sung Fong
論文名稱: 交叉指狀微帶線帶通濾波器之研究
論文名稱(外文): Investigation of Microstrip Interdigital Bandpass Filter
指導教授: 陳居毓
指導教授(外文): Chen Chu Yu
學位類別: 碩士
校院名稱: 樹德科技大學
系所名稱: 電腦與通訊研究所
論文出版年: 2004
畢業學年度: 92
語文別: 中文
論文頁數: 125
中文關鍵詞: 帶通濾波器傳輸零點擇定饋入步階阻抗灌孔寬頻帶
外文關鍵詞: bandpass filtertransmission zerotapped lineStepped Impedance Resonatorviabroadband
相關次數:
  • 被引用:1
  • 點閱:45
  • 評分:*****
  • 下載:15
  • 書目收藏:0
在無線通訊的射頻通訊設備中,微波帶通濾波器是一個重要的且不可或缺的元件,在整個系統中佔有相當的地位。本論文引用交叉指狀(Interdigital)結構為研究之基礎,透過結構之探討,研究出趨近於理想帶通濾波器響應之微帶線濾波器。利用擇定饋入(Tapped line)方式使其產生多個傳輸零點(Transmission zeros);步階阻抗式(Stepped Impedance Resonators)共振腔的設計使其體積縮小、產生極寬之截止頻帶(Stopband),成功的將截止頻帶推展至中心頻率的五倍處;灌孔(Via)技術的設計促使體積下降,獲得極寬之通帶,有效地將相對頻寬(Fractional bandwidth)提升至60%以上。因此在本研究中提出擇定饋入型交叉指狀帶通濾波器、步階阻抗式交叉指狀帶通濾波器、灌孔型交叉指狀帶通濾波器等濾波器之技術,並於文中探討其結構,分析出影響濾波器響應之重要結構因子,且成功的分析出灌孔與頻寬關係之經驗公式。
In the RF front-end of a modern communication system, bandpass filters with wide stopband and high selectivity are usually required to enhance the overall circuit performance. In the thesis, the interdigital structure is primarily concerned in process of investigating arts of the bandpass filter. To approach perfect bandpass filter response, several kinds of improved structures are demonstrated. The creation of multiple transmission zeros are required in achieving the characteristic of high selectivity. Based on that, the filters with using tapped line are introduced into the discussion. Also, the structure of stepped impedance resonators is proposed in reducing component’s size and getting ultra wide stopband. The filter may have a very wide stopband up to 5fc. The use of via technology can reduce size and broaden factional wide band over 60% effectively. The cooperation of tap pseudo-interdigital bandpass filter with stepped impedance resonator of pseudo-interdigital bandpass filter and via pseudo-interdigital bandpass filter are studied in the research
中文摘要 -------------------------------------- i
          英文摘要 -------------------------------------- ii
          誌謝 -------------------------------------- iii
          目錄 -------------------------------------- iv
          表目錄 -------------------------------------- viii
          圖目錄 -------------------------------------- ix
          第一章 緒論---------------------------------- 1
          1.1 背景簡介------------------------------ 1
          1.2 研究動機與目的------------------------ 2
          1.3 文獻回顧------------------------------ 4
          1.4 論文架構------------------------------ 7
          第二章 濾波器之探討-------------------------- 8
          2.1 基本濾波器---------------------------- 8
          2.2 微帶線濾波器-------------------------- 13
          2.3 共振腔的結構-------------------------- 15
          2.3.1 髮夾式共振腔-------------------------- 16
          2.3.2 交叉指狀共振腔------------------------ 18
          2.3.3 步階阻抗式共振腔---------------------- 19
          2.3.4 饋入之結構---------------------------- 22
          第三章 擇定饋入型交叉指狀帶通濾波器---------- 24
          3.1 擇定饋入型交叉指狀帶通濾波器(TP-IDF)--- 24
          3.2 擇定饋入型交叉指狀帶通濾波器之設計---- 27
          3.3 結構參數探討-------------------------- 29
          3.3.1 間隙S1之探討------------------------- 30
          3.3.2 間隙g之探討-------------------------- 34
          3.3.3 饋入位置P之探討---------------------- 38
          3.4 小結---------------------------------- 43
          第四章 步階阻抗式交叉指狀帶通濾波器---------- 45
          4.1 步階阻抗式交叉指狀帶通濾波器(SP-IDF)--- 46
          4.2 步階阻抗式交叉指狀帶通濾波器之設計---- 46
          4.3 結構參數探討-------------------------- 52
          4.3.1 間隙S1之探討------------------------- 52
          4.3.2 間隙g之探討-------------------------- 55
          4.3.3 饋入點位置P之探討-------------------- 59
          4.4 小結---------------------------------- 63
          第五章 灌孔型交叉指狀帶通濾波器-------------- 65
          5.1 灌孔型交叉指狀帶通濾波器(VP-IDF)------ 65
          5.2 灌孔型交叉指狀帶通濾波器之設計-------- 66
          5.3 VP-IDF之探討------------------------- 70
          5.3.1 灌孔位置之探討------------------------ 70
          5.3.2 灌孔數量之探討------------------------ 72
          5.3.3 頻寬曲線之探討------------------------ 75
          5.4 TP-IDF與VP-IDF之探討----------------          78
          第六章 結論---------------------------------- 83
          6.1 TP-IDF、SP-IDF、VP-IDF之響應比較----- 83
          6.1.1 相對頻寬之比較------------------------ 83
          6.1.2 插入損耗之比較------------------------ 84
          6.1.3 傳輸零點之比較------------------------ 84
          6.1.4 截止頻帶之抑制比較-------------------- 85
          6.1.5 尺寸大小之比較------------------------ 86
          6.2 總結---------------------------------- 87
          參考文獻 -------------------------------------- 89
          附錄一 Addition of Transmission Zero into Interdigital  Filter having Tappered I/O 92
          附錄二 A Pseudo-interdigital Bandpass Filter Using Tapped I/O and Stepped Impedance Resonators 96
          附錄三 灌孔型似交叉指狀帶通濾波器之設計------ 102
          附錄四 灌孔對似交叉指狀帶通濾波器頻寬影響之關係------------------------------------ 107
          簡歷 -------------------------------------- 112
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