| 数字程控滤波器 |
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| 引用本文： | 石玉军. 数字程控滤波器[J]. 宝鸡文理学院学报(自然科学版), 2008, 28(2): 148-149 |
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| 作者姓名： | 石玉军 |
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| 作者单位： | 河西学院,物理系,甘肃,张掖,734000 |
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| 摘 要： | 目的通过编程改变D／A转换器的数字输入量来控制滤波器的截止频率。方法以FP—GA为核心，进行了该系统的硬件电路设计和软件设计。结果实现了基于数模转换（DAC）R-2R网络的程控滤波器。结论本设计能方便地控制滤波器的截止频率。
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| 关 键 词： | 程控滤波器 数字控制 FPGA |
Digital programmable filter |
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| SHI Yu-jun. Digital programmable filter[J]. Journal of Baoji College of Arts and Science(Natural Science Edition), 2008, 28(2): 148-149 |
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| Authors: | SHI Yu-jun |
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| Affiliation: | SHI Yu-jun (Dept. Phys., Hexi University, Zhangye 734000, Gansu, China) |
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| Abstract: | Aim The cut-off frequency of programmable filter is controlled by the digital input of D/A converter though programming.Methods Hardware circuits and software are designed based on FPGA.Results A kind of programmable filter based on R-2R network of DAC are realized.Conclusion The cut-off frequency of filter can be adjusted easily by the design. |
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| Keywords: | programmable filter digital control FPGA |
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