高頻帶通濾波器與寄生通帶響應抑制｜國立臺灣科技大學博碩士論文系統

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研究生：	林子元 Zih-yuan Lin
論文名稱：	高頻帶通濾波器與寄生通帶響應抑制 High-frequency bandpass filter and spurious passbands suppression
指導教授：	王秀仁 Show-Ran Wang
口試委員:	徐敬文 Ching-Wen Hsu 邱炳樟 Bin-Chang Chieu
學位類別：	碩士 Master
系所名稱：	電資學院 - 電子工程系 Department of Electronic and Computer Engineering
論文出版年：	2011
畢業學年度：	99
語文別：	中文
論文頁數：	90
中文關鍵詞：	高頻、雙模態、濾波器、寄生通帶
外文關鍵詞：	High-frequency, dual-mode, filter, spurious passband
相關次數：	點閱：194 下載：3
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上一筆

本論文將雙模態環狀共振器( Dual-mode ring resonators )和雙模態帶通環狀濾波器( Dual-mode band-pass ring filters )作討論，就現今的無線通訊系統而言，訊號高頻的表現如:高品質因數( high quality factor )、較寬的通過頻帶( Wind- pass band ) 、低插入損失( low insertion-loss )和微波電路微小化等等，都是製作高頻微波濾波器所需要考量的。
本論文所述的高頻微波濾波器是雙模態環狀結構，由FR4板材當基板製作，並以微帶線的型式去實現。設計過程中先製作一個雙模環狀濾波器，用ADS模擬軟體去模擬。在實作方面，所設計的濾波器中心頻率為2.3-2.7 GHz左右、頻寬為最低3%，最高至16% ，ShapeFactor 小於1、截止帶頻率為基本諧振頻率的2~5倍以上。對模擬結果與實際量測的結果作比較並研討其濾波器特性，並討論且比較近期學術論文所發表的高頻微波環狀濾波器，在抑制寄生通帶的應用上的良窳。

This paper discusses the dual-mode ring resonators and dual-mode ring band pass filter. For today's wireless communication system, the performance of high-frequency signals such as: high quality factor , a wide pass band , low insertion-loss and minimization of the microwave circuit, etc., are needed to consider to produce high-frequency microwave filter.
High-frequency microwave filters described in this paper are dual- mode ring structures made by the FR4 sheet as the substrate and the type of microstrip lines . In the design process, making a dual-mode loop filter, and then by the ADS simulation software to simulate it. The BPFs with spurious response suppression were realized on FR4 substrates , respectively. The BPFs were designed with the characteristics of the center frequencies of 1.5 GHz, Bandwidth of the lowest 3% and up to 16%, The shape factor of the filters was less than two and the stopband with the suppression frequency two to five times over the center frequency. Comparison of simulated results and measured results and expound its characteristics. Contrast with other high-frequency microwave filters published in recent journal articles and discuss the merit and defect on the application of suppressing spurious pass-bands.

摘要..............................................................Ⅰ
Abstract ..........................................................Ⅱ
致謝 .............................................................Ⅲ
目錄..............................................................Ⅳ
圖表目錄..........................................................Ⅵ
第一章  緒論.......................................................1
1  研究背景與動機.............................................1
2  論文內容結構...............................................3
第二章  基本理論..................................................4
1  微帶線理論................................................4
1.1  微帶線結構...........................................4
1.2  傳輸線等效集總電路.....................................5
1.3  傳輸線等效電路的波方程式和其解.........................6
1.4   1/4波長轉換...........................................9
1.5  有效介電係數、特性阻抗和衰減...........................11
1.6  微帶線的不連續效應....................................16
2  微帶線濾波器與寄生通帶效應.................................20
2.1  濾波器的型式..........................................21
2.2  濾波器的參數..........................................22
3  寄生通帶響應...............................................24
3.1  平行耦合微帶線與寄生響應..............................24
3.2  負載端開路(Z L=∞)之傳輸線諧振器.......................28
3.3  負載端短路(Z L=0)之傳輸線諧振器.......................28
第三章  共振器耦合結構.............................................31
1  耦合係數k與微帶線諧振器的耦合型態..........................31
1.1  耦合係數k............................................31
1.2  諧振器間的耦合型態...................................32
1.3  擷取耦合係數k的公式.................................38
2  髮夾型耦合共振器...........................................40
3  方形環狀耦合共振器.........................................43
4  微帶線諧振器的品質因數Q....................................51
5 雙模態共振..................................................52
5.1  簡介..................................................52
5.2   微帶線雙模態共振器...................................52
第四章  環狀濾波器設計、模擬與實作..................................57
1  簡介........................................................57
2  微帶線雙模態環狀濾波器......................................57
2.1  方形環諧振器...........................................58
2.2   Meader loop 諧振器.....................................59
2.3  多重弧狀諧振器.........................................60
2.4   L型靴刺狀突出物(L-type of Spur_line) 諧振器..............61
3  模擬和量測的結果............................................63
4  Spur_line 諧振器1/2中心頻率產生..............................79
第五章  結論.......................................................81
                                

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