基于AOA的多功能n–1阶电流模式滤波器  

Multifunctional n–1 order current-mode filter based on AOA

作　　者：李永安[1] 

机构地区：[1]咸阳师范学院物理学系,陕西咸阳712000

出　　处：《电子元件与材料》2007年第11期32-34,共3页Electronic Components And Materials

基　　金：咸阳师范学院专项科研基金资助项目(05xsyk204)

摘　　要：提出了一种基于AOA(abjoint Op-Amp)多环反馈电流模式多功能滤波器的系统设计方法。以三阶巴特沃思滤波器为例,进行了理论分析。通过改变输入、输出信号的位置,既可从同一端口分别实现低通、带通和高通滤波,又可从不同端口同时实现多种滤波功能。滤波器参数取决于无源电阻、电容,与温度无关,因而稳定性好;滤波器的理论误差小,精度高。计算机仿真证明该滤波器正确有效。A systematic method of designing multiple-loop feedback multifunctional n-1 order current-mode filter with AOA＇s was presented. A multifunctional third-order Butterworth current-mode filter with AOA was obtained by this method. It can carry out low-pass, band-pass and high-pass filtering functions by selecting different inputs and outputs. The parameters of the circuit rely on the resistance and capacitor, and it is out of temperature, and its theoretical error is lower. It possesses high accuracy and high stability. Compute simulating was conducted, and the result shows that the presented circuit is valid and effective.

关 键 词：电子技术 多功能 n-1阶滤波器 电流模式 伴随运算放大器 系统设计 

分 类 号：TN722.77[电子电信—电路与系统]