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- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- In a transmit-receive sharing digital frequency synthesizer, how fast speed we identify whether frequency is aimed at, this is a key subject in ECM. 在收发共用的数字式频率综合器中;如何快速判别频率是否瞄准;也就成为电子对抗战中的一个关键课题.
- In this paper, a design approach of 10cm microwave total coherent agile ra- dar frequency synthesizer, developed by our instiute is introduced. 较详细地介绍了航空航天部二院二零三所研制的10cm全相参捷变雷达频率合成器的设计方案。
- Dueto using advanced MMIC PLL and VCO,the researched frequency synthesizer has smallvolume,fast switching speed and low phase noise. 选用了微波单片PLL频率合成器芯片、单片集成VCO等先进器件，研制的频率合成器具有体积小、捷变速度快、相位噪声低等特点。
- The design and principle of the instruction guidance frequency synthesizer of one airborne PD radar are described in delail in this paper. 对机载PD雷达指令制导频综器的设计方案和工作原理作了详细阐述，并对制导信号进行了分析和讨论。
- Conventional PLL-based frequency synthesizer usually takes hundreds of micro-seconds to settle and isn't capable for such application. 对于一个传统的以锁相迴路为基础之频率合成器而言，通常需要数百微秒才能完成锁定，因此不适用于此系统。
- The paper introduced the working principle of the direct digital frequency synthesizer(DDS) and its spurious analysis is performed. 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 frequency synthesizer is the core device of MMW inter-pulse stepped frequency radar, and its performance has great effects on radar system. 频率合成器是毫米波脉冲频率步进雷达的核心部件,其性能指标的优劣对整个雷达系统有较大的影响。
- At the beginning the principle of PLL is introduced, then a hardware design and implementation of frequency synthesizer based on ADF4218L is presented. 文中在简要叙述锁相环的基本原理的基础上,介绍了ADF4218L的主要特点及基于ADF4218L锁相频率合成器硬件电路的设计和实现。
- Today, the fantastic development of the electronic technology is bringing forward higher request for frequency synthesizer. 随着科学技术的发展,频率合成器成为通信,雷达,电子侦察和对抗,精密测量仪器等的核心部件。
- The key building blocks in the frequency synthesizer are the voltage controlled oscillator (VCO) and the high frequency divider circuit. 摘要:压控振荡器与除频器是频率合成器电路中，主要的电路之一。
