基于微带线-槽线转换的具有陷波特性的超宽带带通滤波器  

Band-Notched UWB Bandpass Filters with Mocrostrip-to-Slotline Cross-Junction Transitions

作　　者：王善进[1] 刘华珠[1] 赖颖昕[1] 陈琼[1] 李秀平[1] 杨杰[1] 

机构地区：[1]东莞理工学院电子工程学院,广东东莞523808

出　　处：《电子器件》2016年第3期522-525,共4页Chinese Journal of Electron Devices

基　　金：广东省科技计划项目(2013B010401040)

摘　　要：利用阶跃阻抗槽线多模谐振器和微带线与槽线的信号转换,设计了一款具有陷波功能的超宽带带通滤波器。滤波器在一块介质基板上制作而成,基板接地面上有一条终端短路宽度不均匀(阶跃阻抗)槽线谐振器,基板的另一面有两条与槽线谐振器垂直的"L"形的开路微带线,作为滤波器的信号输入和输出端口,在这两端口的附近各刻有一条"U"形的槽线,以实现滤波器的陷波功能。仿真和实测表明了滤波器的工作带宽可达3.20 GHz^11.4 GHz,其中陷波带宽为5.20 GHz^5.75 GHz。An ultra-wideband bandpass filter with a band-notched function is proposed using a stepped-impedance multiple-mode slotline resonator and microstrip-to-slotline cross-junction transitions. The filter is implemented by a non-uniform（stepped-impedance）shorted slotline resonator,which is etched on one metal side of the substrate,is crossed at a right angle by two L-shaped open feed microstrip conductors on the opposite side. The band-notched function of the filter is achieved by the U-shaped slotlines on the two feed microstrip conductors. The passband of the filter is achieved in the frequency range of 3.20 GHz^11.4 GHz with the notched band of 5.20 GHz^5.75 GHz by the simulated and measured results.

关 键 词：超宽带带通滤波器 多模谐振器 微带线-槽线正交转换器 陷波 

分 类 号：TN713[电子电信—电路与系统] TN620