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研究生:廖浚翔
研究生(外文):LIAO, JYUN SIANG
論文名稱:寬頻帶拒濾波器與四頻帶帶拒濾波器之設計
論文名稱(外文):Design of Wideband Bandstop Filter and Quad-Band Bandstop Filter
指導教授:湯敬文
指導教授(外文):TANG, CHING-WEN
口試委員:王健仁胡家彰陳浩暉
口試委員(外文):WANG, CHIEN-JENHU, CHIA-CHANGCHEN, HAO-HUI
口試日期:2020-07-03
學位類別:碩士
校院名稱:國立中正大學
系所名稱:電機工程研究所
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:2020
畢業學年度:108
語文別:中文
論文頁數:79
中文關鍵詞:單端短路耦合線開路殘段高衰減量傳輸零點帶拒濾波器環形諧振腔
外文關鍵詞:single-ended short-circuited coupled lineopen stubhigh attenuationtransmission zerosbandstop filterloop resonator
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本論文分成兩個部分,第一部分介紹寬頻帶拒濾波器,利用「使用開路殘段之柴比雪夫帶拒濾波器」所衍生的公式推導而得之帶拒濾波器為原型,探討不同階數對於頻寬與選擇性的影響。接著將Port1、Port2處之並聯開路殘段改為二種不同阻抗之單端短路耦合線產生傳輸零點,達成寬頻與頻帶內高衰減量之設計。
第二部分介紹以環型諧振腔實現四頻帶帶拒濾波器,由具帶拒濾波器特性之環形諧振腔開始設計,將3個不同頻率的環形諧振腔級聯後與一段傳輸線並聯,形成共環4頻帶拒迴路,減小了電路面積。透過找出電路中的環形諧振腔,並調整阻抗值調整諧振頻率,使其能夠具有四頻帶拒濾波器的效果。

This thesis is divided into two parts. The first part introduces the wideband bandstop filter, which is derived from the formula of “chebyshev bandstop filter using open-circuited stub” and the derived bandstop filter is used as a prototype to discuss the different orders for influence of bandwidth and Selectivity. Then, the parallel open circuit stubs at Port1 and Port2 are changed into two types of single-ended short-circuited coupling lines with different impedances to generate transmission zero points,
achieving the design of broadband and high attenuation in the frequency band.

The second part introduces the realization of a quad-band bandstop filter with loop resonators. The design begins with a loop resonator with bandstop filter characteristics. Three loop resonators with different frequencies are cascaded in parallel
with a section of transmission line to form a total Loop 4 frequency bandstop circuit, reducing the circuit area. By finding the loop resonator in the circuit and adjusting the impedance value to adjust the resonance frequency, it can have the effect of a quad-band bandstop filter.

誌謝辭 II
摘要 IV
Abstract VI
目錄 VIII
圖目錄 X
表目錄 XIII
第一章 緒論 1
1.1 研究動機 1
1.2 文獻探討 2
1.3 論文架構 2
第二章 濾波器設計理論
2.1 簡介 3
2.2 傳輸參數矩陣(ABCD) 3
2.3 插入損耗法 7
2.3.1巴特沃茲(Butterworth)濾波器 8
2.3.2柴比雪夫(Chebyshev)濾波器 8
2.3.3低通濾波器雛型 9
2.4開路殘段帶拒濾波器 (bandstop filter with open-circuited stubs) 10
2.5 帶拒濾波器頻寬定義 14
第三章 寬頻帶拒濾波器 16
3.1 簡介 16
3.2 寬頻帶拒濾波器電路架構選擇 16
3.2.1電路架構選擇 16
3.2.2傳輸零點產生機制 19
3.2.2電路架構最佳解 23
3.3 寬頻帶拒濾波器電路分析 27
3.3.1柴比雪夫原型電路阻抗計算 27
3.3.2單端接地耦合線之傳輸零點產生機制 36
3.3.3加入傳輸零點與計算頻寬 38
3.3.4奇偶模阻抗選擇 39
3.3.5使用單端接地耦合線抑制衰減量不足50dB 的部分 42
3.4 電路布局、電磁模擬與量測 46
3.4.1電路實作一 46
3.4.2電路實作二 48
第四章 四頻帶帶拒濾波器 51
4.1 簡介 51
4.2 電路架構 51
4.3 電路分析 55
4.3.1本電路架構 55
4.3.2 2.6GHz、6.7GHz雙頻環形諧振腔 57
4.3.3 4.9GHz環形諧振腔 61
4.3.4 8.7GHz環形諧振腔 64
4.4電路布局、電磁模擬與量測 69
第五章 結論 75
參考文獻 76


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