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- variable frequency synthesizer 可变频率合成器
- VFO? Variable Frequency Oscillator? 可变频率振荡器，变频振荡器?
- Frequency synthesizer is the hardcore of a electronic system. 频率合成器是电子系统的核心部件。
- The work presents the frequency synthesizer based on PLLs. 所以在频率合成器的设计，可分为两个主题。
- In this system, continuously variable slope delta modulation(CVSD) is used to change the analogy signal into digital, GFM is used to modulate the signal, FDMA, PLL frequency synthesizer. 这种系统采用连续可变斜率增量调制(CVSD)来实现语音信号的编码、GFM调制解调方式、FDMA、PLL频率合成器技术。
- PLL frequency synthesizer with DDS reference will adapt to local oscillator of modern radio. 采用DDS输出作为参考的PLL频率合成器非常适合用做现代电台的本振。
- A Quadrature Direct Digital Frequency Synthesizer (QDDS) based on CORDIC algorithm is presented. 设计了一种基于CORDIC算法的正交输出直接数学频率合成器(QDDS);并在ALTERA FLEX10K 系列FPGA上予以实现.
- The fast frequency synthesizer used in the CNI system is discussed in this thesis. 本课题对该系统所需的快速跳 频频率合成器进行了初步的研究。
- In this paper, the design scheme of an agile microwave frequency synthesizer which adopts DDS+PLL is discussed. 本文讨论采用DDS+PLL的捷变微波频率合成器的设计方案。
- EAL-68 with small amount of additive is suitable for R407C in variable frequency rotary compressors of YZB-20R. EAL-68型POE润滑油加入少量添加剂可以作为R407C的YZB-20R型变频压缩机用油。
- Therefore,high performance PFD and CP is the necessity and guarantee for high performance frequency synthesizer. 所以,一个好的鉴相器和电荷泵是设计高性能频率合成器必要和保证。
- The frequency inverters has a function of variable voltage and variable frequency. 频率逆变器具有变压、变频功能。
- In this paper, a solution to fractional frequency dividing frequency synthesizer is introduced. 文中介绍了一种小数分频频率合成器的设计方案。
- Energy consumption of variable frequency drive pump are analyzed,and makes sugg estions about its suitable application. 详细分析了变频调速水泵的能耗，对如何合理应用变频调速水泵进行了探讨。
- An idea of design is provided for asynchronous m otor of variable frequency variable speed in this paper mainly. 本文主要为变频调速异步电动机的设计提供一条思路。
- The purpose of this thesis introduces the analysis frequency synthesizer and the actual design process of the frequency synthesizer. 本论文的目的在于介绍频率合成器的理论分析和实际频率合成器的设计过程。
- Motor for deflector roll in entry side is requested to use AC variable frequency control. 卷取机卸卷小车行走电机采用交流变频调速控制。
- Then the parameterand implement frame of variable frequency test system are dis cussed. 对变频试验系统的参数和实际组件进行了讨论。
- A realization technique of high speed arbitrary wave generator based on dual DDS(direct digital frequency synthesizer) is presented. 提出了一种基于双DDS(Direct Digital Frequency Synthesizer)的高速任意波发生器实现技术。
- A new improved discrete variable voltage variable frequency equivalent sinusoidal control method is presented. 一种新的离散变压变频等效正弦控制方法被提出。
