| 一种高精度直接数字式频率源的设计 |
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| 引用本文： | 郑毅. 一种高精度直接数字式频率源的设计[J]. 电气电子教学学报, 2003, 25(4): 45-47,66 |
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| 作者姓名： | 郑毅 |
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| 作者单位： | 襄樊学院,电气信息工程系,湖北,襄樊,441053 |
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| 摘 要： | 直接数字频率合成(DDS)是近年来发展非常迅速的一种新型频率合成技术，它具有频率分辨率高、相位噪声低、频率切换时间短等特点。首先简要介绍DDS的工作原理及其性能，然后阐述如何利用AD9851芯片设计一个高精度直接数字式合成频率源。
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| 关 键 词： | 直接数字式频率源 直接数字频率合成 DDS AD9851 频率分辨率 相位噪声 |
| 文章编号： | 1008-0686(2003)04-0045-04 |
The Design of a Direct Digital Frequency Source with High Accuracy |
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| ZHENG Yi. The Design of a Direct Digital Frequency Source with High Accuracy[J]. Journal of Electrical & Electronic Engineering Education, 2003, 25(4): 45-47,66 |
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| Authors: | ZHENG Yi |
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| Abstract: | Direct Digital frequency Synthesizer(DDS) is a newly and rapidly developed technology which features high frequency resolution, low phase noise, short frequency switching time. This paper briefly introduces the basic principles and the performance of DDS. Then it mainly describes how to use AD9851 chip to design a direct digital synthesis frequency source with high accuracy. |
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| Keywords: | direct digital frequency synthesizer AD9851 frequency resolution phase noise |
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