旋转电容滤波器主要性能指标研究  

Study on main performance indices of rotary capacitor filter

作　　者：刘玮[1] 郭玉[1] 韩福娟[1] 

机构地区：[1]中国地质大学地球物理与空间信息学院,湖北武汉430074

出　　处：《电力自动化设备》2006年第1期45-47,共3页Electric Power Automation Equipment

摘　　要：旋转电容滤波器RCF(RotaryCapacitorFilter)可以用通用运放、模拟开关及一般RC元件等器件组成。有中心频率稳定、电路简单、成本低廉等优点。介绍了RCF基本原理并对其幅频特性、相频特性及自身噪声等3个主要性能指标进行了实验研究,结果表明RCF具有良好的滤波特性,且输出噪声很小,能满足一般电路的要求。The RCF（Rotary Capacitor Filter） may be made of current operational amplifier,analog switch and general RC elements,which has advantages of steady center frequency,simple circuitry and low cost. Its basic principle is introduced,and its main performance indices,including amplitude-frequency characteristics,phase-frequency characteristics and internal noise are tested. Results show that it has good filtering performance with little noise,which can meet the requirements of general eireuitries.

关 键 词：旋转电容滤波器 幅频特性 相频特性 内部噪声 

分 类 号：TN713.8[电子电信—电路与系统] TM933[电气工程—电力电子与电力传动]