提出一种新的面积优化的直接数字频率合成器设计方案。
An area-efficient design proposal of a direct digital frequency synthesizer is presented.
本文介绍一个微机可控直接数字频率合成器（DDFS）的实验样机。
The paper discusses a prototype of direct digital frequency synthesizer(DDFS) controlled by microcomputer.
本文讨论了基于FPGA芯片的直接数字频率合成器(DDS)的设计方法。
This paper talks about the design method of DDS which is based on FPGA chip.
文章重点讨论了本地载波解调中的直接数字频率合成器（DDFS）模块的设计。
The design of direct digital frequency synthesizer(DDFS)in the way of local carrier demodulation is mainly introduced.
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。
A design scheme is proposed for a direct digital synthesizer (DDS) used in digital video encoders.
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。
Direct Digital Synthesizer (DDS) has the advantages of high frequency resolution, rapid frequency change rate and low phase noise.
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。
The paper introduced the working principle of the direct digital frequency synthesizer (DDS) and its spurious analysis is performed.
由于相位舍位会导致直接数字频率合成器(DDS)的输出产生杂散，使其频谱特性恶化。
As we know, spurious noise of a DDS resulted from phase truncation degrades its spectral characteristics.
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。
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).
所以CORDIC算法来实现软件无线电直接数字频率合成器有助于节省芯片面积、降低功耗、减少成本。
Thus, software radio DDFS based on CORDIC algorithm can help to reduce chip area, power dissipation and cost.
介绍了直接数字频率合成器的基本组成及设计原理，并对各组成部分进行了理论分析，给出了基于FPGA的具体设计方 案及实现方法。
The structure and principles of Direct Digital Frequency Synthesizer is introduced, and each constituent is theoretically analyzed, and also a detailed design based on FPGA is given.
在第二章中，主要介绍直接数字频率合成器（DDS）的工作原理，对DDS的系统结构，工作原理，技术指标，频谱特性，优缺点进行了阐述。
Then the work theory, system structure, technology index, spectrum characteristic, merits and defects of Direct Digital Synthesis (DDS) are introduced mostly in the second chapter.
在第二章中，主要介绍直接数字频率合成器（DDS）的工作原理，对DDS的系统结构，工作原理，技术指标，频谱特性，优缺点进行了阐述。
Then the work theory, system structure, technology index, spectrum characteristic, merits and defects of Direct Digital Synthesis (DDS) are introduced mostly in the second chapter.
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