https://scholars.lib.ntu.edu.tw/handle/123456789/122509
標題: | 利用耦合矩陣合成法設計之廣義柴比雪夫型帶通濾波器 Design of General Chebyshev Bandpass Filters Using The Coupling Matrix Synthesis Methods |
作者: | 林繼煇 Lin, Chi-Hui |
關鍵字: | 微帶線濾波器;帶通濾波器;交錯耦合;microstrip filter;bandpass filter;cross coupling | 公開日期: | 2007 | 摘要: | 本篇論文主要是使用耦合矩陣合成法,將具有濾波響應的廣義柴比雪夫多項式進而合成所需的耦合矩陣,再藉由耦合共振器濾波器來實現帶通濾波響應。N階柴比雪夫多項式除了在通帶內是等連波響應外,可以透過預先置入最多N-2個傳輸零點的方式,增加通帶兩側的選擇度或是通帶內的相位線性度。本文中設計三個四階濾波器與一個六階濾波器,分別具有不同數目的傳輸零點,再透過量測結果驗證設計方法的正確性。此外並提出一種用來設計具有不對稱響應之四階濾波器的方法,利用三層板結構與孔隙耦合,可以實現所需要的響應。 In this thesis, the general coupling matrix synthesis methods are employed to synthesize the required coupling matrix for the specified Chebyshev filtering functions. In addition to have equal-ripple response in the passband, N-degree Chebyshev functions can have at most N-2 prescribed transmission zeros to improve the selectivity or group delay. Three fourth-order filters and one sixth-order filter, which have various transmission zeros, are designed and fabricated, and the measurement results are also included for verifying the accuracy of the synthesis method. Moreover, a design procedure for the fourth-pole filter with asymmetric filtering response is presented, in which multilayer configuration and aperture-coupled coupling are utilized to realize the filter response. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/58873 | 其他識別: | zh-TW |
顯示於: | 電信工程學研究所 |
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ntu-96-R94942074-1.pdf | 23.31 kB | Adobe PDF | 檢視/開啟 |
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