电子发烧友App

硬声App

0
  • 聊天消息
  • 系统消息
  • 评论与回复
登录后你可以
  • 下载海量资料
  • 学习在线课程
  • 观看技术视频
  • 写文章/发帖/加入社区
创作中心

完善资料让更多小伙伴认识你,还能领取20积分哦,立即完善>

3天内不再提示
电子发烧友网>电子资料下载>电子书籍>数字频率合成Demystified

数字频率合成Demystified

2009-07-25 | rar | 4915 | 次下载 | 免费

资料介绍

数字频率合成Demystified:

This text deals with emerging modern digital techniques used to
generate and modulate sine wav e s. These waveforms are used in
almost all radio applications, communications, radar, digital comm
u n i c a t i o n s, electronic imaging, and more. Such tech n i q u e s
either build the waveform from the “ground up” digitally (i.e., generate
all the signal parameters such as phase, frequency, and
amplitude digitally) and deal with the very fundamental nature of
the waveform and its features (direct digital synthesis) or are part
of the digital heart of modern p h a s e - l o cked loop (P L L) synthesize
r s. This might seem, and is indeed, a common and known subject.
Sine waves are truly natural waveforms and trigonometric functions
that are well known and have been researched for a long
t i m e. Furthermore, frequency synthesis is quite a mature technology
with extensive literature and comprehensive coverage in
the professional meetings. Why another text on the subject? What
is new besides application-specific integrated circuit (A S I C) technologies
and silicon densities, geometry, and integration?
While the above statements are true, there is a continuous evolution
in the tech n o l o g y. The generation of accurate wav e f o r m s
p l ays a crucial role in almost all electronic equipment, from radar
to home entertainment equipment, so the importance of the subject
is cl e a r. Clearly, the most important reason for the utilization
of the now extremely popular PLL synthesizers in consumer elec-
tronics and other very popular applications at extremely low cost
(and the popularization of frequency synthesis from consumer
products all the way to complex requirements) is the advance of
digital technology; integrated, high densities; and low-cost silicon
single-PLL chips and ASICs. However, parallel to the advance of
traditional PLL synthesis, there emerged other synthesis techn
iques, mainly digital in nature, direct digital synthesis (D D S)
and fractional-N PLL synthesis. Thus, the classical PLL synthesizer
is now being supplemented with a sizable element of digital
technology and digital signal processing (DSP). Indeed the application
of DSP techniques to frequency synthesis is still at an early
stage.

下载该资料的人也在下载 下载该资料的人还在阅读
更多 >

评论

查看更多

下载排行

本周

  1. 1电子电路原理第七版PDF电子教材免费下载
  2. 0.00 MB  |  1490次下载  |  免费
  3. 2单片机典型实例介绍
  4. 18.19 MB  |  92次下载  |  1 积分
  5. 3S7-200PLC编程实例详细资料
  6. 1.17 MB  |  27次下载  |  1 积分
  7. 4笔记本电脑主板的元件识别和讲解说明
  8. 4.28 MB  |  18次下载  |  4 积分
  9. 5开关电源原理及各功能电路详解
  10. 0.38 MB  |  10次下载  |  免费
  11. 6基于AT89C2051/4051单片机编程器的实验
  12. 0.11 MB  |  4次下载  |  免费
  13. 7蓝牙设备在嵌入式领域的广泛应用
  14. 0.63 MB  |  3次下载  |  免费
  15. 89天练会电子电路识图
  16. 5.91 MB  |  3次下载  |  免费

本月

  1. 1OrCAD10.5下载OrCAD10.5中文版软件
  2. 0.00 MB  |  234313次下载  |  免费
  3. 2PADS 9.0 2009最新版 -下载
  4. 0.00 MB  |  66304次下载  |  免费
  5. 3protel99下载protel99软件下载(中文版)
  6. 0.00 MB  |  51209次下载  |  免费
  7. 4LabView 8.0 专业版下载 (3CD完整版)
  8. 0.00 MB  |  51043次下载  |  免费
  9. 5555集成电路应用800例(新编版)
  10. 0.00 MB  |  33562次下载  |  免费
  11. 6接口电路图大全
  12. 未知  |  30320次下载  |  免费
  13. 7Multisim 10下载Multisim 10 中文版
  14. 0.00 MB  |  28588次下载  |  免费
  15. 8开关电源设计实例指南
  16. 未知  |  21539次下载  |  免费

总榜

  1. 1matlab软件下载入口
  2. 未知  |  935053次下载  |  免费
  3. 2protel99se软件下载(可英文版转中文版)
  4. 78.1 MB  |  537791次下载  |  免费
  5. 3MATLAB 7.1 下载 (含软件介绍)
  6. 未知  |  420026次下载  |  免费
  7. 4OrCAD10.5下载OrCAD10.5中文版软件
  8. 0.00 MB  |  234313次下载  |  免费
  9. 5Altium DXP2002下载入口
  10. 未知  |  233045次下载  |  免费
  11. 6电路仿真软件multisim 10.0免费下载
  12. 340992  |  191183次下载  |  免费
  13. 7十天学会AVR单片机与C语言视频教程 下载
  14. 158M  |  183277次下载  |  免费
  15. 8proe5.0野火版下载(中文版免费下载)
  16. 未知  |  138039次下载  |  免费