2. 直接数字频率合成器 ...___ 学号:___直接数字频率合成器(Direct Digital Frequency Synthesizer)是一种基于 全数字技术, 从… wenku.baidu.com|基于6个网页 3. 直接数字式频率合成器 3,直接数字式频率合成器(Direct Digital Frequency Synthesizer).该类方法具有高频率稳 定度,高频率分辨率以及极短的频率...
1. 什么叫DDS 直接数字式频率合成器DDS(Direct Digital Synthesizer),实际上是一种分频器:通过编程频率控制字来分频系统时钟(SYSTEM CLOCK)以产生所需要的频率。 DDS 有两个突出的特点,一方面,DDS工作在数字域,一旦更新频率控制字,输出的频率就相应改变,其跳频速率高;另一方面,由于频率控制字的宽度宽(48bit 或 者...
High-Speed and High-Performance Direct Digital Frequency Synthesizer DesignThe book focuses on design technology of high-speed and high-performance direct digital frequency synthesizer (DDS) chip. The technologies involves phase to amplitude converter design, D/A converter design, phase accumulator design...
5.1.5 Direct digital synthesis Direct digital synthesis is a method for radio frequency wave generation that allows precise digital control over frequency, phase and amplitude is. A direct digital synthesizer (DDS) generates waveforms digitally instead of being based on an analog oscillator as in the...
A direct digital frequency synthesizer employs residue number system based processors to generate output waveforms of desired frequencies. The frequency synthesizer includes a phase accumulator comprising a plurality of individual adders, each adding a predefined quantity to a digit of a frequency setting ...
英文: Through the research of direct digital synthesizer (DDS) used as a divider in phase lock loop (PLL), a frequency synthesizer with small frequency resolution ratio and high purity frequency spectrum can be realized.中文: 摘要通过对直接数字合成器在锁相环路中作为分频器应用的研究,使频率合成...
direct digital synthesisA new full simulation, design and verification of a Direct Digital Frequency Synthesizer (DDFS), utilizing only one quarter of a given sinusoidal wave, are presented in this study. A reduction in the size of the LUT is accomplished as the new design requires storing only...
美 英 un.直接式数字频率合成 英汉 un. 1. 直接式数字频率合成 例句 释义: 全部,直接式数字频率合成 更多例句筛选
A desired output frequency can be generated by applying a corresponding digital phase step number to an accumulator to generate multiples of the number for application to a sine wave look-up table fro
专利名称：DIRECT DIGITAL FREQUENCY SYNTHESIZER USING SIGMA-DELTA TECHNIQUES 发明人：CORRY, Alan, G.,SUTHERLAND, Robert, A.申请号：US1995012416 申请日：19950929 公开号：WO96/017287P1 公开日：19960606 专利内容由知识产权出版社提供 摘要：A direct digital synthesizer (DDS) for generating a waveform ...