一种具有陷波特性的超宽带带通滤波器  

A Novel Ultra Wideband Bandpass Filter with Notched Band

作　　者：陈鹏[1] 魏峰[1] 黄丘林[1] 史小卫[1] 

机构地区：[1]西安电子科技大学天线与微波技术国家重点实验室,西安710071

出　　处：《微波学报》2008年第S1期129-132,共4页Journal of Microwaves

摘　　要：针对超宽带(UWB)系统易受窄带信号干扰问题,本文提出了一种新颖的带陷波特性的UWB带通滤波器,该带通滤波器由两级交指梳状耦合谐振器级联而成。通过在交指梳状耦合谐振器的一端添加非对称的开路负载,使该滤波器具有了通带内陷波特性。合理地调整开路负载的长度和宽度可以对通带内的任意频段进行抑制。本文设计的UWB带通滤波器工作频段为3.1~10.6GHz,陷波频段为5.8~5.9GHz,抑制电平达到-40dB。仿真结果和测试结果吻合较好,验证了设计的正确性。A new ultra wideband (UWB) bandpass filter (BPF) with notched band is proposed in this paper according to that UWB system is easy to be interfered with the narrow-band signal. The proposed BPF is composed of two cascaded interdigital hairpin resonator units. The rejection band is introduced by adding asymmetric loading stubs to the outer arms of the interdigital resonator. The lengths and widths of the stubs can control the bandwidth of the notched filter and can set the notched band at a desired frequency....

关 键 词：超宽带 带通滤波器 交指梳状耦合谐振器 开路负载 

分 类 号：TN713.5[电子电信—电路与系统]