| 基于MAX268的自动跟踪滤波器的研究及应用 |
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| 引用本文： | 李旭涛,丁国清.基于MAX268的自动跟踪滤波器的研究及应用[J].电测与仪表,2006,43(3):62-64,56. |
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| 作者姓名： | 李旭涛 丁国清 |
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| 作者单位： | 上海交通大学,测控技术与仪器系820所,上海,200030 |
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| 摘 要： | 为了自动跟踪信号频率变化除去噪声，本文研究了一种能自动跟踪信号频率变化的窄带通滤波器，滤波器由方波发生电路和开关电容滤波器MAX268BCNG相结合来实现，其中心频率可在1Hz和15Hz之间自动跟踪。通过调整部分电路参数，中心频率最高可达150kHz。文中给出了线路及试验结果，可用于对信号的自动处理。
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| 关 键 词： | 自动跟踪 中心频率 时钟信号 |
| 文章编号： | 1001-1390（2006）03-0062-03 |
| 收稿时间： | 2005-11-23 |
| 修稿时间： | 2005-11-23 |
Research on an Automatic Tracking Filter Based on MAX268 and Its Application |
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| LI Xu-tao,DING Guo-qing.Research on an Automatic Tracking Filter Based on MAX268 and Its Application[J].Electrical Measurement & Instrumentation,2006,43(3):62-64,56. |
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| Authors: | LI Xu-tao DING Guo-qing |
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| Affiliation: | Test Technology and Instrument department, Shanghai Jiaotong University, Shanghai 200030, China |
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| Abstract: | Authors have researched on a kind of narrow-band-pass filter for the purpose of automatically tracking frequency's changes and eliminating the noise.The main method is combined the square wave circuit with the switch capacitor filter MAX268BCNG to realize the automatic tracking filtering at the central frequency,which is form1Hz to 15Hz.Through adjusting the part of circuit parameters,the highest central frequency can be 150kHz.The result and circuit are given,and it can be used for the signal process. |
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| Keywords: | MAX268 |
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