改进型跳耦结构电流镜滤波器  

Current mirror filters with improved leapfrog-type

作　　者：石文孝[1] 王树勋[1] 王春悦[1] 韩庆全[1] 

机构地区：[1]吉林大学通信工程学院

出　　处：《通信学报》2005年第2期25-28,共4页Journal on Communications

基　　金：信息产业部中青年教师科学基金资助项目

摘　　要：提出了一种利用电流镜积分器和微分器实现的改进型跳耦结构滤波器,讨论并比较了跳耦结构和改进型跳耦结构滤波器的设计方法,改进方法突破了单纯用电流镜积分器实现滤波器的局限,简化了椭圆函数滤波器的信号流图和电路结构;完成了MOS级的计算机仿真,仿真结果表明所提出的电路方案正确有效。An improved leapfrog-type filter employing current mirror integrator and differentiator and its comparison with conventional leapfrog-type filter was given. The filter implementation limitation of uniquely using current mirror integrator was broke by this improved design method. And the signal flow graph and circuit configuration for elliptic filters was simplified. PSPICE simulation at the MOS transistor level was carried out and results show that the proposed circuit is valid and feasible.

关 键 词：积分器 微分器 电流镜 电流模式 连续时间滤波器 

分 类 号：TN713[电子电信—电路与系统]