| 反抽样数字滤波器设计 |
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| 作者姓名： | 贾桂丰 包素艳 |
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| 作者单位： | 中国航天科技集团公司第七○四研究所 北京100076
(贾桂丰)，中国航天科技集团公司第七○四研究所 北京100076(包素艳) |
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| 摘 要： | 根据 DAC的幅频特性 ,当输入信号频率接近奈奎斯特采样率时 ,输出信号幅度衰减约 3 .9d B。文中设计了补偿此衰减的数字滤波器 ,并提出一种节省资源的高效实现方法。最后 ,给出了实验结果 ,以证明此滤波器补偿功能的可行性
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| 关 键 词： | 反抽样数字滤波器 CSD码 FPGA |
Design of Inverse Sampling Fileer |
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| Authors: | Jia Gueifeng Bao Shugyian |
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| Institution: | Jia Gueifeng Bao Shugyian |
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| Abstract: | It can be seen from the amplitude-frequency charactersitic of the digital to analog Converter that the DAC amplitude attenuate about 3.9 dB when the frequency approaches the Naquist frequency.So,the frequency response degraded.A kind of inverse sampling filter is designed in order to compensate this attenuation and some methods is proposed to save the design resource.At last,some experiment results are presented and the availability of the inverse sampling filter is verified. |
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| Keywords: | Inverse sampling filter CSD code FPGA |
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