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 於設計混合耦合髮夾式帶通濾波器時，中心頻率、比例頻寬、通帶區內之植入損失與折返損失及截止區內之衰減斜率等皆為重要之考量依據。於本論文中，利用方型開迴路諧振器來設計混合耦合髮夾式帶通濾波器。此外，為了縮小電路尺寸我們採用凹折型開迴路諧振器來設計帶通濾波器。 於本論文中，首先探討混合耦合髮夾式帶通濾波器之設計理論。其次，分別設計與製作具方型與凹折型開迴路諧振器帶通濾波器。最後，實際量測兩種濾波器之特性，並將量測結果與模擬數值作比較。
 In the design of mixed-coupled hairpin bandpass filters , the center frequency , the fractional bandwidth , the insertion and return losses in the passband , and the attenuation slope in the stopband are important parameters to be considered. In this thesis , the structures of square open-loop resonator are applied to design the mixed-coupled hairpin bandpass filters. Furthermore , to reduce the circuit size , the bandpass filter is designed using folded open-loop resonators. In this thesis , the designing theories of mixed-coupled hairpin bandpass filters is analyzed firstly. Next , the bandpass filters with square and folded open-loop resonators are designed and realized , respectively. Finally , the characteristics of these two filters are measured and compared with the simulation results.
 第一章 緒論..1 1-1 研究動機............................................1 1-2 文獻探討............................................2 1-3 內容概要............................................3 第二章 混合耦合髮夾式帶通濾波器之理論分析.....................4 2-1 簡介................................................4 2-2 準TEM傳輸線.........................................4 2-3 集總式濾波器........................................6 2-3.1 濾波器的種類.................................6 2-3.2 設計方法.....................................7 2-4 分散式帶通濾波器...................................10 2-4.1 半波長微帶線諧振器..........................10 2-4.2 諧振器間的耦合係數..........................11 2-4.3 混合耦合模型的建立..........................12 2-4.4 輸入端與輸出端分接埠的位置..................15 第三章 混合耦合髮夾式帶通濾波器之設計與擬擬..................30 3-1 簡介…………………………………………………...……...30 3-2 半波長開迴路諧振器…………………………………........30 3-3 建立混合耦合模型……………………………………...…...33 3-4 帶通濾波器之設計…………………………………...……...34 3-4.1 具方型開迴路諧振器…………………...………….35 3-4.2 具凹折型開迴路諧振器…………………..………..37 3-5 電腦輔助模擬……………………………………...………...38 3-5.1 具方型開迴路諧振器………………………..……..38 3-5.2 具凹折型開迴路諧振器……………………..……..39 第四章 混合耦合髮夾式帶通濾波器之特性量測.….................61 4-1 簡介……………………………………………………..…...61 4-2 電路佈局與量測步驟…………………………………..…...61 4-3 電路特性之量測………………………………………..…...62 4-3.1 具方型開迴路諧振器…………………………..…..62 4-3.2 具凹折型開迴路諧振器………………………..…..62 4-4 結果與討論……………………………………………..…...63 第五章 結論………………………………………..…................76 參考文獻...................................................78
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