一种新型交指-发夹型多层带状线带通滤波器  

A Novel Interdigital-Hairpin Bandpass Filter Using Multilayered Stripline Structure

作　　者：牟亚妮[1] 马哲旺[1] 

机构地区：[1]上海大学通信工程系,上海200072

出　　处：《电子学报》2006年第12期2238-2241,共4页Acta Electronica Sinica

摘　　要：提出了一种新型交指-发夹型多层带状线带通滤波器结构,并设计加工了一个中心频率为2.25GHz,分数带宽为31%的四级带通滤波器,测试值与仿真值吻合得较好.通过仿真结果比较以及实验结果证明,与传统交指型带通滤波器相比,新型交指-发夹型滤波器不但体积减小了约一半,而且能够方便地引入交叉耦合,从而在阻带内产生传输零点,很好地改善滤波器的频率选择特性.A novel interdigital-hairpin bandpass filter using mulfilayered stripline structure is proposed. The new structure can not only reduce the size of the filter, but also provide transmission zeros to improve its stopband characteristics. As an example, a four-pole bandpass filter centered at 2.25GHz with a fractional bandwidth of 31% using the proposed structure is designed, fabricated and measured. The simulated and experimental results show an excellent agreement.

关 键 词：交指型滤波器 发夹型滤波器 带状线 多层结构 交叉耦合 传输零点 

分 类 号：TN713[电子电信—电路与系统]