Design flexibility of an open-loop resonator filter using similarity transformation of coupling matrix
Design flexibility of an open-loop resonator filter using similarity transformation of coupling matrix
复制标题
使用耦合矩阵相似变换的开环谐振滤波器的设计灵活性
DOI：
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发表时间：
2005
影响因子：
3
通讯作者：
Young
中科院分区：
文献类型：
--
作者：
Chang;Juseop Lee;Young
本文通过耦合矩阵的相似变换实现椭圆响应开环谐振器滤波器的设计灵活性。为了验证所提出的方法，采用传统的开环谐振器结构设计了一个紧凑的四极椭圆响应带通滤波器。所设计的滤波器的谐振腔间距非常窄，无法满足所要求的耦合系数，无法实现分数带宽更宽的滤波器。通过对耦合矩阵的相似变换，提出了克服这一问题的两种可能的构型。利用这种设计灵活性，设计出具有更宽分数带宽和可实现的设计参数的滤波器。
In this letter, the design flexibility of an elliptic-response open-loop resonator filter is achieved through similarity transformation of the coupling matrix. To verify the proposed method, a compact four-pole elliptic-response bandpass filter is designed using the conventional structure with open-loop resonators. Designed filter has the resonators with very narrow spacing for the required coupling coefficient and it is impossible to implement a filter with wider fractional bandwidth. Two possible configurations to overcome this problem are presented through similarity transformation of the coupling matrix. From this design flexibility, a filter with wider fractional bandwidth is designed with realizable design parameters.