| 一种基于FPGA的DDS算法的简化实现 |
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| 引用本文： | 常春波.一种基于FPGA的DDS算法的简化实现[J].太原科技大学学报,2006,27(5):340-343. |
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| 作者姓名： | 常春波 |
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| 作者单位： | 太原科技大学电子信息工程学院,太原,030024 |
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| 摘 要： | 在分析了传统的DDS算法的基础上,提出了一种改进方案,使得系统的复杂度降低,更趋于模块化,产生的波形频率更准确.输出采用一个周期8个采样点的定点输出,系统时钟频率为80MHz,信号的谐波小于70dB.输出信号的范围为DC到10MHz,信号频率的步长为0.1Hz,相应的转换速度为12.5ns.
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| 关 键 词： | 循环相位累加器 |
| 文章编号： | 1673-2057(2006)05-0340-04 |
| 修稿时间： | 2006年3月9日 |
An Optimized DDS Algorithm Based on FPGA |
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| CHANG Chun-bo.An Optimized DDS Algorithm Based on FPGA[J].Journal of Taiyuan University of Science and Technology,2006,27(5):340-343. |
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| Authors: | CHANG Chun-bo |
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| Abstract: | Based on the analysis of traditional DDS,an optimized DDS,which can decrease the complication of system and make it more modular,is proposed.The output sine wave frequency,which consists of 8 fixed output samples in one period,is more accurate in frequency with a spectral purity of-70dB at 80MHz systematic time frequency.The output signal covers a bandwidth from DC to 10MHz in 0.1Hz step with a corresponding switching speed of 12.5ns. |
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| Keywords: | FPGA DDS |
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