臺灣博碩士論文加值系統

利用截線負載型步階阻抗諧振器與缺陷接地面結構來設計雙波段帶通濾波器，具有縮小電路尺寸與易於調整第二波段的中心頻率之優點。於本論文中，將利用截線負載型步階阻抗諧振器來分別設計具混合耦合結構之基本型與縮小型雙波段帶通濾波器。

於本論文中，首先，探討截線負載型步階阻抗諧振器之特性。其次，分別說明具混合耦合結構的基本型與縮小型雙波段帶通濾波器之設計理論。接著，分別設計與製作具混合耦合結構的基本型與縮小型雙波段帶通濾波器。最後，量測兩種雙波段帶通濾波器之特性，並將量測結果與模擬數值作比較。

由研究結果可得知，兩種雙波段帶通濾波器皆具有極佳之濾波特性。另一方面，具混合耦合結構之縮小型雙波段帶通濾波器，除了與具混合耦合結構的基本型雙波段帶通濾波器之濾波特性相當外，並且可以縮小大約23%之電路
尺寸。

摘要I
AbstractII
目次III
圖次V
表次VII
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 具截線負載型步階阻抗諧振器與缺陷接地面結構之雙波段帶通濾波器4
2-1 簡介4
2-2 低通濾波器之原型電路4
2-3截線負載型步階阻抗諧振器5 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　2-4 具混合耦合結構之雙波段帶通濾波器7
2-4.1 基本型雙波段帶通濾波器7
2-4.2 縮小型雙波段帶通濾波器8
2-5 缺陷接地面結構之特性9
2-5.1 啞鈴型缺陷接地面結構9
2-5.2 矩型缺陷接地面結構11
2-5.3 凸字型缺陷接地面結構11
第三章 雙波段帶通濾波器之設計26
3-1 簡介26
3-2 截線負載型步階阻抗諧振器26
3-3 建立耦合模型28
3-4 基本型雙波段帶通濾波器28
3-4.1 電路設計28
3-4.2 參數之影響與電路之最佳化31
3-5.1 電路設計34
3-5.2參數之影響與電路之最佳化37
第四章 雙波段帶通濾波器之製作與特性量測65
4-1 簡介65
4-2 電路佈局與製作65
4-3 基本型雙波段帶通濾波器65
4-4 縮小型雙波段帶通濾波器66
4-5 結果與討論67
第五章 結論76
參考文獻78

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