带通与低通级联滤波器的设计  

Design of Bandpass and Low-Pass Cascade Filter

作　　者：王鹏博 严一尔[1] WANG Pengbo;YAN Yier(School of Mechanical and Electric Engineering,Guangzhou University,Guangzhou 510006,China)

机构地区：[1]广州大学机械与电气工程学院,广州510006

出　　处：《电子器件》2018年第6期1473-1476,共4页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(61701127);广州市科技计划项目(201605030014)

摘　　要：设计了一款应用于高铁系统上的双路同轴腔体滤波器,采用了带通与低通滤波器级联仿真方法,对其远端谐波进行有效抑制,从而提高滤波器带外的滤波性能。通过HFSS与Designer的联合仿真,用广义切比雪夫(General Chebyshev)滤波函数实现了中心频率为5 660 MHz,通带带宽为380 MHz,远端抑制达到25 d B的低插损高抑制的性能指标。最后对比了测试与仿真结果,得出带通滤波器级联低通滤波器可以实现带外高抑制的结论。It designed a double channel coaxial cavity filter applied to high-speed rail system,this system adopted cascade stimulation of bandpass and lowpass method suppressed distal harmonic effectively,thus improved the filter’s performance.The joint simulation by HFSS and Designer realized the filter’s performance by general Chebyshev filtering function.This performance of low insertion loss and high inhibitory included the center frequency at 5660 MHz,the bandwidth of 380 MHz,and the distal inhibition of 25 dB.Finally,the test results were compared with simulation results,and obtained that the cascade filter can improve the out-of-band rejection.

关 键 词：腔体滤波器 谐波抑制 级联仿真 广义切比雪夫 滤波函数 

分 类 号：TN713.5[电子电信—电路与系统]