全功能数字频率源。
Finally, the complete digital frequency source is introduced.
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.
直接数字频率合成（DDS）是一种新型的频率合成技术。
The technique of direct digital synthesis(DDS)is a novel frequency synthesis technique.
采用直接数字频率合成(DDS)技术，实现波形发生器。
It also presents the realization of wave form generation with DDS technology.
根据其特性，利用FPGA设计了高准确度的数字频率信号源。
According to its characteristic, a high accuracy digital frequency supply oscillator has been designed using FPGA.
介绍了基于直接数字频率合成技术的双通道任意波形信号发生器。
The double channel arbitrary wave generator based on direct digital frequency synthesis is introduced.
本文主要讨论了数字频率直接合成(DDS)技术特点及其应用。
This thesis mainly discusses the Direct Digital Frequency Synthesis (DDS) technique and its applications.
直接数字频率合成技术(DDFS)是一种先进的频率控制技术。
Direct digital frequency synthesis (DDFS) is an advanced technique for frequency synthesis.
数字查表法合成周期信号是一种最常用的直接数字频率合成技术。
Digital look up table method for synthesizing periodic signals is the most popular technique for direct digital frequency synthesis.
设计了数字频率均衡网络，并实现了对传感系统的频域均衡与标定。
In order to compensate the frequency characteristic of the probe, a digital frequency balancing method is proposed, and the digital balancing network is designed.
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.
该方案实际上是一个输出频率受控的直接数字频率合成(DDS)系统。
The digitized FM system is actually a Direct Digital Synthesis (DDS) system that the frequency of the output is controllable.
介绍了高速中规模集成数字频率合成器、晶体管高频大功率放大器的设计。
The high-speed digital frequency mixer made of medium-scale integrated circuits and the design of a high power transistor amplifier are also presented.
该解调器由数字混频器、数字频率合成器(DDFS)和低通滤波器构成。
This initial demodulator incorporates a digital mixer, DDFS and low-pass filter.
方法：根据数字频率合成理论，基于FPGA实现了多频信号源的核心部分。
Method Based on the digital frequency synthesis theory and FPGA, the main part of a multi-frequency signal source is accomplished.
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.
本文介绍了一种利用数字频率温度补偿装置来提高DRO的频率温度稳定性的方法。
In this paper, it is introduced about how to utilize digital frequency temperature compensation circuit (DFTCC) to improve DRO s frequency vs temperature range stability.
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。
Using DDS (Direct Digital Synthesizer) technique under control of single-chip computer, electronic-tunable wavelength scanning is realized.
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.
采用高精度的直接数字频率合成（DDS）和数字锁相环技术，实现了高频率跟踪精度。
DDS and digital phrase-lock technology have been applied in FPGA to improve the accuracy of frequency tracking.
作者等人以8086微机实现的数字频率引导设备已成功地应用于同步通讯卫星测控站中。
We have implemented the equipment of digital frequency leading by 8086 microcomputer and successively applied in measuring and control station of synchronization communication satellite.
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).
直接数字频率合成(DDS)是一种新的频率合成方法，具有频率分辨率高、切换速度快等优点。
The direct digital frequency synthesis (DDS) is a kind of new frequency synthesis method. It has high frequency resolution, fast frequency switching speed, etc.
在此基础上，介绍了小数分频器在直接数字频率合成技术和步进电机驱动速度控制中的两种常见应用。
Applications of decimal Fraction frequency divider in the area such as direct digital frequency synthesis technology and stepper motor drive speed controller a re introduced.
自1971年第一次被引入以来，直接数字频率合成(DDS)技术一直是频率合成技术研究的热点。
Direct Digital frequency synthesis (DDS) technology has always been the hotspot of study on frequency synthesis technology, since it was introduced in 1971 firstly.
自1971年第一次被引入以来，直接数字频率合成(DDS)技术一直是频率合成技术研究的热点。
Direct Digital frequency synthesis (DDS) technology has always been the hotspot of study on frequency synthesis technology, since it was introduced in 1971 firstly.
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