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研究生:吳東峰
研究生(外文):Dung-Feng Wu
論文名稱:微小化微波帶通濾波器之研究
論文名稱(外文):Investigations of Compact Microwave Bandpass Filters
指導教授:尤正祺
指導教授(外文):Cheng-Chi Yu
學位類別:碩士
校院名稱:逢甲大學
系所名稱:資訊電機工程碩士在職專班
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:2008
畢業學年度:96
語文別:中文
論文頁數:86
中文關鍵詞:傳輸零點準交指狀步階阻抗缺陷微帶線結構帶通濾波器
外文關鍵詞:Transmission ZerosPseudo-Inter-DigitalStepped–ImpedanceDefected Microstrip Structure (DMS)Bandpass Filter
相關次數:
  • 被引用被引用:4
  • 點閱點閱:140
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  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
本論文提出數個微小化微波帶通濾波器,濾波器應用缺陷微帶線結構,以準交指狀架構,形成基本的平面式帶通濾波器,利用擇定饋入方式在通帶邊緣產生傳輸零點,提升了整個帶通濾波器的選擇性,加上步階阻抗架構,利用步階阻抗奇模激發與偶模激發以及高低阻抗比值的特性,形成具有寬截止帶且小型化的帶通濾波器,在802.11b/g系統架構下,擇定饋入歩階阻抗準交指狀帶通濾波器,有效消除二次及三次諧波,與均勻阻抗比較,濾波器面積縮小了30%,在802.11a系統架構下,擇定饋入歩階阻抗準交指狀帶通濾波器,有效消除二次諧波,與均勻阻抗比較,濾波器面積縮小了26%;並且使用灌孔技術,將二分之ㄧ波長的準交指狀架構轉成四分之ㄧ波長的交指狀架構,有效的再縮小整個濾波器的面積。
Several compact microwave band-pass filters are proposed in this thesis. The filters had been realized by defected microstirp structure (DMS) and pseudo-inter-digital structure. Tapped input was used to make transmission zeros at the pass-band edge, so that the selectivity of the filter was improved. The stepped-impedance microstrip resonators had also been used for filters design. By applying high-to-low impedance ratio of stepped-impedance for filters design, a broad stop-band characteristics and compact size were performed. The experimental results show that the second and/or third harmonics were effectively suppressed for 802.11b/g and 802.11a filters. As comparing with uniform-impedance-resonator filter, the 802.11b/g and 802.11a filters demonstrate 30% and 26% size reduction, respectively.
Also, quarter wavelength resonators with a via to ground plane were used to design microwave filter. The line length reducing makes it more compact than half wavelength resonator.
摘要-------------------------------------------------------------------------------------i
誌謝------------------------------------------------------------------------------------iii
目錄------------------------------------------------------------------------------------iv
圖目錄---------------------------------------------------------------------------------ix
表目錄-------------------------------------------------------------------------------xiv
第一章、導論--------------------------------------------------------------------------1
1.1研究動機---------------------------------------------------------------------1
1.2文獻回顧---------------------------------------------------------------------3
1.3論文內容摘要---------------------------------------------------------------5
第二章、微帶線與濾波器之探討--------------------------------------------------6
2.1微帶線原理------------------------------------------------------------------6
2.1.1微帶線傳輸線介紹--------------------------------------------------6
2.1.2微帶線傳輸組態-----------------------------------------------------7
2.1.3微帶線各項參數公式計算及考量--------------------------------8
2.2微帶線濾波器簡介-------------------------------------------------------16
2.3共振器間之耦合----------------------------------------------------------19
2.4共振器間之耦合型態----------------------------------------------------19
2.4.1電場耦合-------------------------------------------------------------20
2.4.2磁場耦合-------------------------------------------------------------24
2.4.3混合耦合-------------------------------------------------------------28
2.5交指狀共振器-------------------------------------------------------------30
2.6步階阻抗共振器----------------------------------------------------------32
2.7輸入與輸出擇定饋入----------------------------------------------------36
2.7.1輸入與輸出饋入點位置的決定----------------------------------36
2.7.2饋入點對電路響應造成的影響----------------------------------39
第三章、擇定饋入準交指狀均勻阻抗帶通濾波器設計與製作-------------40
3.1 802.11b/g系統架構下擇定饋入準交指狀均勻阻抗
帶通濾波器--------------------------------------------------------------40
3.1.1 802.11b/g系統架構下設計之擇定饋入準交指狀
均勻阻抗帶通濾波器參數及頻率響應-----------------------40
3.1.2 802.11b/g系統架構下設計之擇定饋入準交指狀
均勻阻抗帶通濾波器耦合係數--------------------------------44
3.1.3 802.11b/g系統架構下設計之擇定饋入準交指狀
均勻阻抗帶通濾波器饋入點耦合-----------------------------46
3.2 802.11a系統架構下擇定饋入準交指狀均勻阻抗
帶通濾波器-------------------------------------------------------------47
3.2.1 802.11a系統架構下設計之擇定饋入準交指狀
均勻阻抗帶通濾波器參數及頻率響應---------------------47
3.2.2 802.11a系統架構下設計之擇定饋入準交指狀
均勻阻抗帶通濾波器耦合係數------------------------------51
3.2.3 802.11a系統架構下設計之擇定饋入準交指狀
均勻阻抗帶通濾波器饋入點耦合---------------------------52
第四章、擇定饋入準交指狀步階阻抗帶通濾波器設計與製作-------------54
4.1 802.11b/g系統架構下擇定饋入準交指狀
步階阻抗帶通濾波器--------------------------------------------------54
4.1.1 802.11b/g系統架構下設計之擇定饋入準交指狀
步階阻抗帶通濾波器參數及頻率響應--------------------54
4.1.2 802.11b/g系統架構下設計之擇定饋入準交指狀
步階阻抗帶通濾波器饋入點耦合--------------------------59
4.2 802.11a系統架構下擇定饋入準交指狀
步階阻抗帶通濾波器----------------------------------------------------60
4.2.1 802.11a系統架構下設計之擇定饋入準交指狀
步階阻抗帶通濾波器參數及頻率響應--------------------60
4.2.2 802.11a系統架構下設計之擇定饋入準交指狀
步階阻抗帶通濾波器饋入點耦合--------------------------65
第五章、灌孔式擇定饋入交指狀步階阻抗帶通濾波器設計----------------67
5.1 802.11b/g系統架構下設計之灌孔式擇定饋入步階阻抗
交指狀帶通濾波器--------------------------------------------------------67
5.1.1 802.11b/g系統架構下設計之灌孔式擇定饋入步階阻抗
交指狀帶通濾波器參數及頻率響應--------------------------67
5.1.2 802.11b/g系統架構下設計之灌孔式擇定饋入步階阻抗
交指狀帶通濾波器饋入點耦合-------------------------------70
5.1.3 802.11b/g系統架構下設計之擇定饋入均勻阻抗與
歩階阻抗準交指狀帶通濾波器及灌孔式擇定饋入
歩階阻抗交指狀帶通濾波器之比較-------------------------71
5.2 802.11a系統架構下設計之灌孔式擇定饋入步階阻抗
交指狀帶通濾波器------------------------------------------------------73
5.2.1 802.11a系統架構下設計之灌孔式擇定饋入步階阻抗
交指狀帶通濾波器參數及頻率響應-------------------------73
5.2.2 802.11a系統架構下設計之灌孔式擇定饋入步階阻抗
交指狀帶通濾波器饋入點耦合-------------------------------76
5.2.3 802.11a系統架構下設計之擇定饋入均勻阻抗與
歩階阻抗準交指狀帶通濾波器及灌孔式擇定饋入
交指狀歩階阻抗帶通濾波器之比較-------------------------77
第六章、結論-------------------------------------------------------------------------80
參考文獻-----------------------------------------------------------------------------82
參考文獻
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