臺灣博碩士論文加值系統

本論文提出了一種新穎的可控制頻寬之雙頻帶通濾波器架構，並使用低溫共燒陶瓷技術實現，其多層結構及低損耗特點有助於縮小電路尺寸及改善特性。此架構是使用傳輸線並聯數個對地步階阻抗諧振器，其對地步階阻抗諧振器亦可視為短路殘帶，可在兩通帶之間產生傳輸零點，來增加兩個頻帶之隔離度。經電路分析、理論推導、公式修正及實作量測，且藉由模擬與量測的一致，驗證了理論分析與電路架構之正確性與可行性。

The novel dual-band bandpass filter structure with controllable bandwidth is proposed in this thesis. In order to miniaturize the size of the circuit and improve its performance, multilayered structure and the technology of low temperature co-fired ceramic (LTCC) are employing to fabricate the filter. The architecture of the filter uses the shunted structure to connect the multiple stepped impedance resonators (SIRs) which connected to ground with the transmission line section and the SIRs which connected to ground can be equivalent to the short stub. By inserting transmission zero which generated by the SIRs can enhance the isolation among the two passbands. From the circuit analyzed, theorem derived, formula fixed and the measured results, good agreement between simulation and measurement has demonstrated the theory and feasibility of the proposed circuit.

中文摘要 I
英文摘要 II
目錄 III
圖目錄 V
表目錄 VII
第一章 緒論 1
1.1 研究動機 1
1.2 文獻探討 2
1.3 論文內容摘要 3
第二章 濾波器基本理論 4
2.1 簡介 4
2.2 低通濾波器雛型 5
2.3 阻抗與導納反轉子 6
2.4 低通濾波器雛型轉換成帶通濾波器 7
第三章 等頻寬之雙頻帶通濾波器 11
3.1 簡介 11
3.2 設計理論 11
3.3 濾波器合成 13
3.4 等頻寬雙頻帶通濾波器 17
3.5 修正因子 18
3.6 等頻寬設計實例 19
第四章 可控制頻寬之雙頻帶通濾波器 21
4.1 簡介 21
4.2 理論分析 21
4.3 修正因子 23
4.4 設計實例 24
第五章　雙頻帶通濾波器設計與量測 27
5.1 簡介 27
5.2 LTCC晶圓級量測方法 27
5.3 設計流程 29
5.4 三階等頻寬之雙頻帶通濾波器 29
5.4.1 電路模擬 30
5.4.2 多層佈局 31
5.4.3 電磁模擬 32
5.4.4 量測結果 33
5.5 型式A之三階可控制頻寬雙頻帶通濾波器 35
5.5.1 電路模擬 36
5.5.2 多層佈局 37
5.5.3 電磁模擬 38
5.5.4 量測結果 39
5.6 型式B之三階可控制頻寬雙頻帶通濾波器 41
5.6.1 電路模擬 42
5.6.2 多層佈局 43
5.6.3 電磁模擬 44
5.6.4 量測結果 45
第六章 結論 48
參考文獻 49

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