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| 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。 |
| 关键词: 旋转电容滤波器,幅频特性,相频特性,内部噪声 |
| DOI： |
| 分类号:TN713.8 TM933 |
| 基金项目: |
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| Study on main performance indices of rotary capacitor filter |
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LIU Wei GUO Yu HAN Fu-juan
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| Abstract: |
| 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 circuitries. |
| Key words: rotary capacitor filter,amplitude-frequency characteristics,phase-frequency characteris-tics,internal noise |
