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Spur is the key specification that affects the performance of fractional-N frequency synthesizers. 杂散是影响分数N频率综合器性能的重要指标。
In order to control PTS frequency synthesizers by PC computer,designed a simple circuit. 为实现PTS系列频率综合器的微机控制，设计了一种简单的控制电路。
Phase noise is the key character in direct digital frequency synthesizers (DDS) applied in the high stable frequency source. 摘要相位噪声是制约DDS用于高稳定频率源的的关键指标。
Due to the conventional integer-N frequency synthesizers suffer from fundamental tradeoffs among frequency step size, loop bandwidth, phase noise, and reference spurs. 由于常见的整数型频率合成器有几个取舍问题，例如频率解析度对于迴路频宽、相位杂讯和参考信号突波的取舍。
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。
A fast simulation environment has been developed using MATLAB and SIMULINK for behavioral level simulation of spread spectrum clock generator based Fractional-N frequency synthesizers. 摘要提出了一种展频时钟生成的方法，使用MATLAB和SIMULINK开发出了快速模拟基于分数N型频率合成器的展频时钟生成器的环境。
Direct digital frequency synthesizers (DDFS) 直接数字频率合成器
A new method LFM in direct digital frequency synthesizing ( DDS) based on CORDIC algorithm is introduced in this paper. 本文介绍了一种应用CORDIC算法的线性调频直接数字合成(DDS)的实现方法。
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。