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。
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。
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 high performance DDS chip AD9951 produced by ADI is adopted to design a frequency synthesizer in this paper.
阐述了AD 9951芯片的主要性能及其在快速频率合成器设计中的应用方法。
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 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。
DDS-driven PLL frequency synthesizer architecture is given in this paper.
给出了一种基于DDS驱动PLL的频率综合器结构。
The realization of the project is mainly composed of two parts. The first part is low frequency signal generator based on DDS, and the second part is high frequency signal synthesizer.
该方案的实现主要包括两大部分，其一是低频dds信号产生部分，其二是高频信号合成部分。
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。
Design a synthesizer based on DDS, whose characteristics are fast frequency change speed, high resolution and low phase noise et al.
并以DDS为核心设计了接收机的细扫本振，该本振具有变频速度快、分辨率高、相噪指标高等特点。
In the last part, I put forward the scheme of monolithic chip microcomputer controlled, DDS based short wave DHF frequency synthesizer.
最后，本论文提出了单片机控制的，基于DDS的短波差分跳频频率合成器的设计方案。
In the last part, I put forward the scheme of monolithic chip microcomputer controlled, DDS based short wave DHF frequency synthesizer.
最后，本论文提出了单片机控制的，基于DDS的短波差分跳频频率合成器的设计方案。
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