截止波导带通滤波器的设计  

Design of Evanescent Waveguide Bandpass Filter

作　　者：伍昆伦[1] 补世荣[1] 陈柳[1] 

机构地区：[1]电子科技大学光电信息学院,成都610054

出　　处：《电子器件》2012年第1期30-33,共4页Chinese Journal of Electron Devices

摘　　要：简述了截止波导带通滤波器的基本设计原理,并实现了一款小型化的超窄带带通滤波器。中心频率为3.65 GHz,带宽为30 MHz。体积仅为42 mm×11 mm×7.5 mm,带内插入损耗小于6 dB,带内反射小于-22 dB,阻带的衰减曲线相当陡峭。通过的实验证实了该方法的可行性和正确性。To describe the basic principle of evanescent waveguide bandpass filter, a narrow-band bandpass filter were designed. The filter have a central frequency of 3.65 GHz and 30 MHz bandwides. And the size of filter is only 37 mm×17 mm×7.5 mm,the insert loss is less than 6dB,and the return loss in the passband is less than -22 dB, stopband attenuation curve quite steep. Experiments demonstrate the design feasibility and correctness.

关 键 词：带通滤波器 截止波导 耦合结构 窄带 

分 类 号：TN713.5[电子电信—电路与系统] TN624.1