基于非对称马刺线的小型化宽阻带滤波器的设计  

Compact and Wide Stop-band Filter Based on Asymmetric Spurs Line

作　　者：刘凡[1] 任宝平[1] 文品 刘海文[1] Liu Fan Ren Baoping Wen Pin Liu Haiwen

机构地区：[1]华东交通大学信息工程学院,南昌330013

出　　处：《测控与通信》2016年第4期14-18,共5页

摘　　要：利用阶跃阻抗谐振器（SIR）具有阻抗比和电长度比双重设计自由度，通过四阶CQ（Cascade Quadruplet）级联结构及非对称马刺线的陷波特性，设计出1种新型小型化宽阻带带通滤波器。该滤波器在通带两侧激励出了2个额外的传输零点，显著地提升了通带的矩形系数，且运用马刺线良好的陷波特性，有效地拓宽了阻带。该滤波器可广泛应用于无线通信接收机系统。Using the Characteristic of step impedance resonator（SIR） with double design freedom of impedance ratio and electrical length ratio has been presented, Base on the analysis of fourth-order CQ （Cascade Quadruplet） of the cascade structure and asymmetric Spurs line, a new type of compact and wide stop-band band pass filter is designed. The filter pass band sides excite two additional transmission zeros and significantly improve the shape factor of the pass band. The notch resistance of the Spurs line can, effectively broaden the stopband. So the filter can be widely applied in wireless communication systems.

关 键 词：阶跃阻抗谐振器 CQ结构 非对称马刺线 宽阻带带通滤波器 

分 类 号：TN713.5[电子电信—电路与系统]