The paper introduced the working principle of the direct digital frequency synthesizer (DDS) and its spurious analysis is performed.

文章介绍了直接数字频率合成器(DDS)的基本工作原理，同时对其杂散进行了分析。

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Direct Digital Synthesizer (DDS) has the advantages of high frequency resolution, rapid frequency change rate and low phase noise.

直接数字频率合成器dds具有极高的分辨率、频率转换速度快、相位噪声低等优点。

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At first, this paper described the basic structure, working principle, sources of spurious signals and characteristics of output spectrum, of direct digital frequency synthesizer (DDS).

首先分析直接数字频率合成器(DDS)的基本结构、工作原理、杂散来源、输出频谱特性。

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