摘要: 介绍了一种宽带线性调频(LFM)雷达信号产生的方法与实现,结合直接数字合成(DDS)+锁相环(PLL)的方式,采用DDS芯片AD9852和集成锁相芯片ADF4360-7完成了设计所需求的宽带线性调频信号。详细说明了该方案设计的构架、各单元电路的设计与实现以及各芯片参数的设定情况。实测结果表明,该频率合成器输出功率>-4 dBm,...
Design of Frequency Synthesizer B ased on DDS +PLL XU Qiang ,C HA I J un (The 723Institute of CSIC ,Yangzhou 225001,China )Abstract :This paper discusses t he realization plan of t he f requency synt hesisis source by means of t he direct digital synt hesis (DDS )STEL 21173and p...
关键词:DDS;PLL;频率合成器;相位噪声 中图分类号:TN911 文献标识码:B 文章编号:1004—373X(2009)05—090一o3 DesignofWidebandFrequencySynthesizerBasedonDDS——DrivenPLL ZHUQingfu.XIYoubao,DONGLifang (SchoolofElectronicEngineering,UniversityofElectronicScience&TechnologyofChina,Chengdu,610054,China) ...
DDS+PLL 技术实现的 L 波段频率合成器 UsingDDS/PLLforDesignALBandfrequencysynthesizer (上海大学)张伟 Zhang,Wei 摘要:直接数字合成(DDS)是近年发展起来的一种新型合成 技术,有频率分辨率高,转换时间短,相位噪声低等特点,与 锁相合成技术(PLL)配合,可以设计出频带宽、分辨率高的 频率合成器。本文介绍了一种DDS+...
Design of frequency synthesizer based on DDS+PLL Jiang Tao Tang Zongxi Zhang Biao (Electronic Engineering School of UESTC, Chengdu 610054, China)Abstract: A method to develop a frequency synthesizer with wide band, fast frequency switching speed, high fre-quency resolution and low phase noise ...
PLL Frequency synthesizerDDSVCOThe Chirp signals are an important class of spread spectrum signals that find significant role in radar applications. The use of Chirp signals results in high range and resolution. This paper delineates the design of low complexity C-band CSS transmitter. The carrier...
ADI 时钟发生器/PLL频率合成器 ADF4351BCPZ 锁相环 - PLL 34-4400MHz PLL with Integrated VCOADF4351BCPZ 2500 ADI 原厂封装 20+ ￥1.0000元>=10 个 艾睿威电子(深圳)有限公司 4年 查看下载 立即询价 查看电话 QQ联系 AD 时钟发生器/PLL频率合成器 ADF4350BCPZ 锁相环 - PLL WB Synthesizer w/ ...
With ?ne frequency T resolution, fast channel switching and versatile modulation capabilities, the DDS provides frequency synthesis and direct modulation capabilities that cannot be easily implemented by other synthesizer tools such as analog-based phase-locked loop (PLL) synthesizers. It is dif?cult ...
KeywordsPLL;loopfiher;DDS;frequencysynthesizer 1引言 信号源是电子系统中非常重要的部件,常常被称作电 子系统的心脏。信号源有多种产生方式,本文所采用的是频 率合成技术。因为PLL具有输出频率高,杂散抑制较好、相 位噪声较低等特点。但是它的频率分辨率低,而且频率切换 ...
Keywords:frequencysynthesizer;PLL;DDS; 11 王磊刘振兴/DDS与PLL频率合成数字系统设计2009No.3 & Information communications 信息通信 个时钟周期,相位累加器都要加上00...01。如果累加器位宽n 是32位,相位累加器就需要2 32 个时钟周期才能恢复初值。 相位累加器的输出作为正弦查找表的查找地址。查找 表中的每个地...