| 基于CORDIC算法的直接数字频率合成器 |
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| 引用本文： | 李辉,吕明. 基于CORDIC算法的直接数字频率合成器[J]. 实验科学与技术, 2006, 4(2): 115-118 |
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| 作者姓名： | 李辉 吕明 |
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| 作者单位： | 电子科技大学,成都,610054 |
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| 摘 要： | 在传统的直接频率合成器（DDS）中，相位到幅度的转化是通过相位码寻址只读存储器（ROM）来实现的。随着微电子技术的进步，用实时计算来代替ROM查找表已成为可能。文章讨论了应用CORDIC算法计算正弦值时旋转方向的确定方法以及CORDIC算法在DDS中的应用，为基于可编程器件设计DDS系统提供了有益的参考。
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| 关 键 词： | 并行CORDIC算法 相位截位 杂散 旋转方向 |
| 文章编号： | 1672-4550（2006）02-0115-04 |
| 收稿时间： | 2005-03-02 |
| 修稿时间： | 2005-03-02 |
CORDIC-Based Direct Digital Frequency Synthesizer |
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| LI Hui,L Ming. CORDIC-Based Direct Digital Frequency Synthesizer[J]. Experiment Science & Technology, 2006, 4(2): 115-118 |
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| Authors: | LI Hui L Ming |
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| Affiliation: | University of Electronic Science and Technology of China Chengdu 610054 |
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| Abstract: | In conventional DDS architecture, mapping from phase codes to amplitude codes is implemented through addressing ROM memory by phase codes. With the development of the micro - electronics techniques, it is possible to substitute ROM by a real -time computer. This paper discusses how to get the rotation directions in the process of computing sine/cosine with CORDIC algorithm and how to apply CORDIC Algorithm in a DDS. It is a good reference to those who design DDS system by PLD. |
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| Keywords: | DDS |
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