数字频率合成器的英文

• dfs digital frequency synthesizer
• frequency synthesizer

• "数字"英文翻译    figure; digit; numeral; char ...
• "频率合成器"英文翻译    frequency synthesizer
• "间接式数字频率合成器" 英文翻译 :    indirect digital frequency synthesizer
• "直接式数字频率合成器" 英文翻译 :    direct digital frequency synthesizer
• "数字式频率合成器" 英文翻译 :    digital frequency synthesizer
• "频率合成器" 英文翻译 :    frequency combiner; frequency compounder; fs frequency synthesizer; synthesizer, frequency
• "直接式数字频率合成" 英文翻译 :    direct digital frequency synthesis
• "直接数字频率合成（器）" 英文翻译 :    ddfs direct digital frequency synthesis(-zer)
• "直接数字式频率合成器" 英文翻译 :    direct digital synthesizer
• "间接式频率合成器" 英文翻译 :    indirect frequency synthesizer
• "可变频率合成器" 英文翻译 :    variable frequency synthesizer
• "频率合成器电路" 英文翻译 :    frequency synthesizer circuit
• "频率合成器供电" 英文翻译 :    synth
• "频率合成器启动" 英文翻译 :    syn str
• "频率合成器时钟" 英文翻译 :    syn clk
• "频率合成器数据" 英文翻译 :    syn dat
• "数位频率合成器" 英文翻译 :    dfs digital frequency synthesizer
• "直接频率合成器" 英文翻译 :    direct synthesizer
• "直接式频率合成器" 英文翻译 :    direct frequency synthesizer
• "频率合成器, 频率综合器" 英文翻译 :    frequency synthesizer
• "可编程序频率合成器" 英文翻译 :    programmable frequency synthesizer
• "射频频率合成器启动" 英文翻译 :    rfaenb
• "射频频率合成器数据" 英文翻译 :    rfadat
• "数字频率" 英文翻译 :    numerical frequency
• "数字频率表" 英文翻译 :    digital frequency meter

• Dfs digital frequency synthesizer
  数字频率合成器
• Luo bin ( optics engineering ) directed by yu xuecai , zong derong based on the laser mode locking principle , this paper focuses on the study of dds acousto - optic mode locker
  本文根据锁模激光原理，进行了dds （直接数字频率合成器）声光锁模器的研制。
• 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。
• 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。
• This paper also discusses direct digital synthesis ( dds ) and digital signal process ( dsp ) in detail , because the application of digital technology is involved in software radio
  本课题由于在软件无线电中还涉及了数字技术的应用，因此对其中的关键部分直接数字频率合成器( dds )和高速数字信号处理器( dsp )也进行了详细地讨论。
• 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。
• 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。