Filter Parameter Extraction for Triple-Band Composite Split-Ring Resonators and Filters
Filter Parameter Extraction for Triple-Band Composite Split-Ring Resonators and Filters
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DOI：
10.1109/tmtt.2011.2123109
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发表时间：
2011-03
影响因子：
4.3
通讯作者：
R. Geschke;B. Jokanović;P. Meyer
中科院分区：
文献类型：
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作者：
R. Geschke;B. Jokanović;P. Meyer
提出了一种由三个分环谐振器组成的复合谐振器的结构，以获得三带响应，在两个通带之间有两个传输零。提出了两种新的拓扑结构来设计具有可控响应的三带滤波器。提出了一种基于滤波器耦合模型的系统滤波器设计方法。建立了控制通带的三带滤波器设计模型。提出并比较了两种提取滤波器参数的方法。模型中考虑了非相邻元素之间的耦合，并表明耦合具有显著的影响。通过改变耦合复合谐振器的方向，可以引入额外的传输零点。两个六阶滤波器示例说明了如何使用耦合模型与滤波器设计方法来设计具有指定响应的滤波器。讨论了该滤波器拓扑结构的局限性。
A configuration of composite resonators consisting of three split-ring resonators is proposed to obtain a triple-band response with two transmission zeros between the passbands. Two new topologies are presented to design triple-band filters with controllable responses. A systematic filter design approach is presented based on a filter coupling model. The model is established to enable triple-band filter design with controlled passbands. Two methods are proposed and compared for the extraction of filter parameters. Coupling between nonadjacent elements is considered in the model and shown to have a significant effect. By changing the orientation of the coupled composite resonators, it is possible to introduce additional transmission zeros. Two sixth-order filter examples illustrate the use of the coupling model with the filter design approach to design filters with specified responses. The limitations of this filter topology are discussed.