Design of Quasi-Reflectionless Filters with Simple Topologies
Design of Quasi-Reflectionless Filters with Simple Topologies
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DOI：
10.1109/apmc47863.2020.9331576
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发表时间：
2020-12
期刊：
影响因子：
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通讯作者：
Sen Lu;K. Xu;Yingjiang Guo;Qiang Chen
中科院分区：
文献类型：
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作者：
Sen Lu;K. Xu;Yingjiang Guo;Qiang Chen
提出了一种简单的准无反射（QR）滤波器拓扑的分析和设计方法。单端口QR滤波器的拓扑由一对带通响应的耦合线和带阻响应的级联结构组成。单端口QR带通滤波器(BPF)和带阻滤波器(BSF)可以通过在滤波器拓扑中用有损电阻替换相应端口来实现，并且两者具有相同的QR特性。最后对二端口QR BPF进行了进一步的分析和仿真，具有良好的滤波性能和QR特性。
An analysis and design method on a simple quasi-reflectionless (QR) filter topology is proposed. The topology of single-port QR filter is composed by a pair of coupled lines with bandpass response and a cascaded structure with bandstop response. The single-port QR bandpass filter (BPF) and bandstop filter (BSF) can be realized by replacing the corresponding port with lossy resistance in filter topology, and both of them have identical QR property. Finally, a two-port QR BPF is further analyzed and simulated, with good filtering performance and QR property.