English translation for "direct digital frequency synthesizer"
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- 直接式数字频率合成器
Related Translations:
- Example Sentences:
| 1. | Study on direct digital frequency synthesizer technology based on piecewise pperation
基于分段运算的直接频率合成技术研究 | | 2. | 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。 | | 3. | Direct digital frequency synthesizer ( dds ) is an apparatus to generate wave on the required frequency . it provides high frequency resolution , rapid frequency transforma - tion and other superiority
直接数字频率合成器是现代频率合成的主要工具,它有频率分辨率高,频率转化快等众多优点。 | | 4. | Then according to the emphasis of the design , went deeply into the theory of pll frequency synthesizers widely used , described pll ’ s working principle , structure and several types in detail , and made research and analysis of pll frequency synthesizers ’ phase noise , including the effect of the active loop filter on the phase noise , and give some methods to make improvement as well , such as changing loop filter form , reducing divide number , and increase phase detector frequency , etc . then paper introduced the principle character and phase noise analysis of direct digital frequency synthesizer ( dds ) and injection phase lock circuit , which are also important circuits in the design
论文首先对几十年频率合成器的发展进行概述,而后针对本次设计的重点,对应用较为广泛的锁相频率合成理论进行了深入的探讨,详细介绍了锁相环的工作原理、组成结构和锁相类型,并对锁相频率合成器的相噪特性进行了研究分析,包括有源环路滤波器对于相噪的影响,提出了改善相位噪声的几点措施:改善环路形式、降低分频数、增大鉴相频率等。接着介绍了直接数字频率合成器( dds )和注入锁相电路的原理特点以及相噪分析,它们也是本次设计的重要电路。 | | 5. | The direct digital frequency synthesizer is a kind of fully digitized frequency synthesizer , which consists of the phase accumulator , the sine look - up table , the digital to analog converter and the low band filter . it is of high frequency resolution , fast frequency switching speed , low phase noise , the ability to switch frequencies while maintaining constant phase , and the ability to producing arbitrary waveforms
直接数字频率合成器是一种全数字化的频率合成器，由相位累加器、波形rom 、 d a转换器和低通滤波器构成， dds技术具有频率分辨率高、频率切换速度快、频率切换时相位连续、输出相位噪声低和可以产生任意波形等优点。 | | 6. | The subject derives from electronic equipment bureau of electronic information industry of department of general equipment of china . the subject researches dds ( direct digital frequency synthesizer ) signal source of the frequency agile signal generator . it plays a good role in the important pre - research project that is the test technology of tactics anti - jamming for communication transceiver synthesis
本课题是总装备部电子信息部电子装备局下达的预研项目? ? 《战术抗干扰通信电台综合测试技术》中的信号源部分(捷变频信号发生器中的dds信号源部分) 。 | | 7. | The primary work in this dissertation : 1 . based on the analysis of direct digital synthesis ( dds ) , this dissertation compares the differences and similarities between direct digital waveform synthesizer ( ddws ) and direct digital frequency synthesizer ( ddfs ) . a dds system is presented , and the theoretical analysis and practical implementation of the system is discussed in details
本文所作的主要工作如下: 1 .全面分析了直接数字合成( dds )技术的工作原理,对比了直接数字波形合成( ddws )及直接数字频率合成( ddfs )两种数字波形产生方法,并就其理论设计和工程实践问题进行讨论。 |
- Similar Words：
- "direct digital display oximeter" English translation, "direct digital disply oximeter" English translation, "direct digital embedding" English translation, "direct digital encoder" English translation, "direct digital frequency synthesis" English translation, "direct digital interface" English translation, "direct digital laser logger" English translation, "direct digital logging system" English translation, "direct digital process control" English translation, "direct digital synthesis" English translation
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