| 程控滤波器的实现方法和滤波方案设计 |
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| 引用本文： | 常新华,丁德光,孙福文. 程控滤波器的实现方法和滤波方案设计[J]. 烟台师范学院学报(自然科学版), 2008, 0(4) |
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| 作者姓名： | 常新华 丁德光 孙福文 |
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| 作者单位： | 鲁东大学物理与电子工程学院 大束镇凰翥中心学校 |
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| 基金项目： | 鲁东大学校基金(L20072801) |
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| 摘 要： | 对程控滤波器的实现方法进行了详细分析,设计了以增强型51单片机和LMF100滤波芯片为核心的简易实现方案.通过单片机输出时钟信号,控制LMF100构成的四阶低通和高通滤波器,实现了滤波参数的程序控制.详细推导了滤波函数与截止频率以及控制时钟之间的关系,利用Matlab实现了相关运算.
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| 关 键 词： | 程控滤波器 LMF100滤波芯片 单片机 MATLAB |
Realization Methods of Programmable Filter and Design of Filter Scheme |
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| CHANG Xin-hua,; DING De-guang,; SUN Fu-wen. Realization Methods of Programmable Filter and Design of Filter Scheme[J]. Yantai Teachers University journal(Natural Science Edition), 2008, 0(4) |
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| Authors: | CHANG Xin-hua, DING De-guang, SUN Fu-wen |
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| Affiliation: | 1(1.School of Physics and Electronic Engineering; Ludong University; Yantai 264025; China; 2.Central Elementary School of Huangzhu; Dashu Town; Zoucheng 273511; China); |
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| Abstract: | The realization methods of programmable filter are analyzed and then a simple scheme is designed based on the enhanced 51 MCU and LMF100 chip.Parameters of four-rank lowpass and highpass filters are controlled by clock signal outputted from MCU,which can achieve the filter parameters s programmable controlling.Relations among filter function,cutoff frequency and control clock are deduced and relative algorithms carried out by using Matlab. |
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| Keywords: | programmable filter filter chip of LMF100 MCU Matlab |
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