| 数字程控滤波器的设计 |
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| 引用本文： | 何兴华.数字程控滤波器的设计[J].安庆师范学院学报(自然科学版),2009,15(1):61-65. |
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| 作者姓名： | 何兴华 |
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| 作者单位： | 安庆市工交干部学校,安徽,安庆,246005 |
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| 摘 要： | 设计并实现了一种基于仪用放大器、开关电源滤波器、直接数字合成芯片、单片机和LCD的数字程控滤波器。由单片机对输入的小信号进行相应的放大、低通和高通滤波处理。利用DDS直接数字频率合成技术实现对高低通滤波截止频率的数字程控。
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| 关 键 词： | 仪用放大器 开关电容滤波器 数字频率合成 单片机 |
Design of Digital Programmable Control Filter |
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| HE Xing-hua.Design of Digital Programmable Control Filter[J].Journal of Anqing Teachers College(Natural Science Edition),2009,15(1):61-65. |
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| Authors: | HE Xing-hua |
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| Institution: | HE Xing-hua (Anqing Gongjiao Executives College, Anqing 246005, China) |
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| Abstract: | This paper designs a kind of programmable control filter based on Instrument amplifier,switch condenser filter、DDS、MCU and LCD in which the input small-signal is amplified by the MUC and responsible for the process of high and low filter.We use the direct digital frequency synthesis technology to achieve the digital control for the cut-off frequency to low and high pass filter. |
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| Keywords: | Instrument amplifier Switch condenser filter Digital frequency synthesis MCU |
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