利用电流传输器构成新型电流型有源滤波器  

A NEW TYPE DESIGN OF CURRENT-MODE-ACTIVE FILTERS USING CURRENT CONVEYORS

作　　者：王其红[1] 史国栋[1] 

机构地区：[1]河南农业大学

出　　处：《郑州轻工业学院学报》1993年第4期29-34,共6页Journal of Zhengzhou Institute of Light Industry（Natural Science）

摘　　要：提出了利用电流传输器设计新型电流型有源滤波器的新方法。即以电流传输器作为基本积木块,将其与两个无源网络相接;运用网络理论知识,求出总的电流传输函数;然后,通过适当选择无源网络的结构以及元件,构成新型电流型标准二阶滤波器,即低通、高通、带通、带阻和全通滤波器及其传递函数。由该设计组成的电路具有高频、高输入、输出阻抗和低灵敏度等优点,并可直接级连而构成高阶滤波器。另外,该电路也可工作在较高的信号带宽下,具有较大的线性度和动态范围。A new method to design a new type current-mode-active filters using current conveyors is presented. The current conveyor is acted as basic building block,which is join-ded to two passive networks. Applying to the knowledge of network theory,and the current transfer function is obtained. According to choose the construct and the element parameter of passive network,the new type standard second-order current-mode filter, i. e. lowpass,highpass,bandpass ,band eliminate,allpass and their transfer function is obtained. The new circuits have many advantages. Eg haveing high freguency,high input impedance and output impedance,low-sensitivity etc. It is also cascaded directly to make up high order filters,in addition to,these circuits can be operated under the higher signal bandwidth and have lager linearity and larger range of dynamic.

关 键 词：电流传输器 无源网络 滤波器 

分 类 号：TM13[电气工程—电工理论与新技术]