| 低杂散DDS的分析与仿真 |
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| 引用本文： | 袁玉群,梁蓓,叶显阳,谭亚军.低杂散DDS的分析与仿真[J].贵州大学学报(自然科学版),2009,26(6):101-103,142. |
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| 作者姓名： | 袁玉群 梁蓓 叶显阳 谭亚军 |
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| 作者单位： | 贵州大学理学院电子系,贵州,贵阳,550025 |
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| 摘 要： | 采用时域波形分析的方法，分析了相位截断对DDS输出频谱的影响，给出了相位截断频谱的分布规律，用Matlab进行编程仿真，验证了结论。利用相位抖动技术来抑制DDS相位截断误差，最终达到改善DDS输出频谱特性的目的。
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| 关 键 词： | DDS 杂散抑制 相位截断 相位抖动 Matlab仿真 |
The Analysis and Simulation of Low-Spurious DDS |
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| YUAN Yu-qun,LIANG Bei,YE Xian-yang,TAN Ya-jun.The Analysis and Simulation of Low-Spurious DDS[J].Journal of Guizhou University(Natural Science),2009,26(6):101-103,142. |
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| Authors: | YUAN Yu-qun LIANG Bei YE Xian-yang TAN Ya-jun |
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| Institution: | ( Department of electronics, College of Science, Guizhou University, Guiyang 550025, China) |
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| Abstract: | The method of time-domain waveform was adopted to analyze these influence generated by the phase truncation in the output spectrum and the distributed pattern of their error frequency spectrum was provided. With the assistance of computer simulation Matlab, the conclusion was tested. The phase-dithering method was employed to suppress DDS phase truncation, which ultimately leads to improvements in the purpose of DDS output spectrum features. The method has done a rigorous analysis and use simulation tools to verify the theoretical analysis results. |
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| Keywords: | DDS |
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