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研究生:羅偉誠
研究生(外文):Wei-Cheng Lo
論文名稱:運用三線耦合共振器之超寬頻帶通濾波器的分析與設計
論文名稱(外文):Analysis and Design of Compact Ultra-WidebandBandpass Filters Based on Three-Coupled-Line Resonator
指導教授:張盛富
指導教授(外文):Sheng-Fuh Chang
學位類別:碩士
校院名稱:國立中正大學
系所名稱:電機工程所
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:2006
畢業學年度:94
語文別:中文
論文頁數:47
中文關鍵詞:三線耦合共振器
外文關鍵詞:Three-Coupled-Line Resonator
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本論文設計以三線耦合器為基礎的超寬頻帶通濾波器。首先,探討三線耦合
器的耦合特性,包括推導三個特徵模態( OE、EE、OO 模 )的自容與互容值並由
這些特徵值,可進一步得到電容矩陣以及各個特徵模態的特徵阻抗與耦合係數的
關係。接著,以此三線耦合器為基礎,建構成帶通濾波器。利用上述推衍的結果,
預估頻寬和傳輸零點的位置。再利用電磁模擬軟體IE3D 進行模擬,在論文分別
設計應用於超寬頻(UWB)系統之ㄧ階、二階和三階帶通濾波器。一階量測結果顯
示通帶為3.1 至5.1 GHz,植入損失為0.5 dB、返回損失為15 dB,兩個零點分別
在1.54 GHz 與7.07 GHz。量測結果與模擬相當符合,驗證本論文提出的新架構
和模型之正確性。
In this thesis, compact ultra-wideband bandpass filters base on to three-coupled-line
resonator are investigated. First, the characteristics of three-coupled-line resonator are
analyzed from the multiple-coupled-line theory, where the self and mutual capacitances of
three eigen-modes( OE,EE, and OO mode )are derived and then the relationship between their
characteristic impedances with the coupling coefficients is obtained. Second, the ultra-wideband
bandpass filters based on the above derived relationship are designed. IE3D is used to
include the parasitic effects. Three filters including the first-, second-, and the third-order
topology are realized. The measurement results show that for the first-order filter, the
insertion loss is 0.5 dB, and return loss is -15 dB from 3.1 to 5.1 GHz passband. Two
transmission zeros are generated at 1.54 GHz and 7.07 GHz. For the second-order filter, the
measured insertion loss is 0.7 dB, and return loss is 13 dB, and two transmission zeros located
at 1.65 GHz, 6.9 GHz, respectively. For the third-order filter, the measured insertion loss is
2 dB, and return loss is 7 dB, and two transmission zeros located at 1.7 GHz, 7.1 GHz
respectively. All these measurement results agree very well with the multiple-coupled-line
theory and EM simulation. This shows great application potential of UWB bandpass filter
designed based on the three-coupled-line resonator.
目錄................................................................................................................................. I
圖目錄.............................................................................................................................II
表目錄........................................................................................................................... IV
第一章 緒論.................................................................................................................. 1
1.1 研究動機.......................................................................................................... 1
1.2 論文內容綱要.................................................................................................. 3
第二章 平行三線耦合微帶線理論.............................................................................. 4
2.1 基本獨立正交模態之理論與分析................................................................. 4
2.2 六埠網路組抗矩陣參數之推導..................................................................... 9
2.3 平行三線耦合微帶結構電容單元之特性分析........................................... 14
第三章 UWB 帶通濾波器之分析與設計................................................................. 19
3.1 平行三線耦合帶通濾波器網路埠數學推導............................................... 19
3.2 平行三線耦合帶通濾波器匹配條件........................................................... 21
3.3 寬頻帶通平行三線耦合濾波器設計步驟................................................... 24
3.4 電路理論計算................................................................................................ 32
第四章 電路模擬與量測結果.................................................................................... 34
4.1 電路模擬........................................................................................................ 34
4.2 量測結果........................................................................................................ 38
4.3 理論計算、電腦模擬與量測結果之比較................................................... 43
第五章 結論................................................................................................................ 45
參考文獻....................................................................................................................... 46
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