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电子学报  2012 

基于横向滤波器理论的小型超宽带差分带通滤波器

, PP. 2539-2543

Keywords: 超宽带(UWB),差模,横向滤波器理论,共模

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Abstract:

本文提出了一种基于横向滤波器理论的小型超宽带差分滤波器结构.由于输入/输出端口之间具有两条不同电长度的传输路径,使得差模信号的通带两端具有两个传输零点并且具有良好的谐波抑制特性.四条1/4波长的短路线被用来改善差模信号的通带特性.另外,共模信号可以很容易在整个频段上得到抑制.加工结构模型的测试结果表明:差模信号的相对带宽为102%,带内的回波损耗大于15dB.实验测试结果与理论仿真结果吻合较好.

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