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。
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。
The direct digital synthesizer (DDS) is used to sweep frequency for a sandwich piezoelectric transducer two admittance circles of the transducer about two different resonance frequencies is measured.
利用直接数字合成器(DDS)对夹心式换能器进行扫频，测得两个不同共振频率附近的导纳圆。
The realization of direct digital synthesizer (DDS) by FPGA based on the principle of fraction division is introduced.
采用现场可编程门阵列（FPGA）基于小数分频器的原理，实现直接数字式频率合成器（DDS）。
A design scheme is proposed for a direct digital synthesizer (DDS) used in digital video encoders.
提出了一种应用于数字视频编码器中直接数字频率合成器(DDS)的设计方案。
In this paper a method of designing and implementing Field Programmable Gate Array (FPGA) digital modulator based on the improved Direct digital Synthesizer (DDS) technology is presented.
提出了一种基于改进直接数字频率合成(DDS)技术的现场可编程门阵列(FPGA)数字调制器设计与实现方法。
The spectrumcharacteristic of the direct digital frequency synthesizer(DDS )is mainly stud-ied in this paper.
着重研究了直接数字式频率合成器（DDS）的频谱特性。
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。
Using DDS (Direct Digital Synthesizer) technique under control of single-chip computer, electronic-tunable wavelength scanning is realized.
系统采用计算机控制下的直接数字频率合成(DDS)技术，实现电调谐波长扫描。
Direct digital synthesizer (DDS) is a kind of new frequency synthesizer technique. With it signal parameter can be switched into signal wave.
直接数字式频率合成(DDS)作为一种新的频率合成技术，它可以实现从信号参数到信号波形的转换。
And while programmed on DSP, we modulated data by the way of Direct Digital Synthesizer (DDS).
利用直接数字合成(DDS)技术完成对数据的调制。
And while programmed on DSP, we modulated data by the way of Direct Digital Synthesizer (DDS).
利用直接数字合成(DDS)技术完成对数据的调制。
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