|
|||||
|
|
| 宽带锁相扫频源设计 | |
| 引用本文： | 邓贤进,李家胤,张健.宽带锁相扫频源设计[J].现代电子技术,2005,28(24):123-126. |
| 作者姓名： | 邓贤进 李家胤 张健 |
| 作者单位： | 1. 电子科技大学,物理电子学院,四川,成都,610054;中国工程物理研究院,电子工程研究所,四川,绵阳,621900 2. 电子科技大学,物理电子学院,四川,成都,610054 3. 中国工程物理研究院,电子工程研究所,四川,绵阳,621900 |
| 摘 要： | 根据给出的扫频源设计指标,对PLL＋DDS常用组合方式DDS激励PLL和PLL内插DDS进行了分析比较,确定了一种将两种组合方式的优点充分结合起来新的组合设计方案,并对这种方案进行了可行性分析.分析表明,这种组合方式有效地减小了倍频次数N,实现了宽带低相位噪声,同时利用DDS的超高频率分辨率、高频率精确度、容易实现程控等优点与锁相环良好的窄带跟踪滤波特性相结合,实现了细步长、可程控的宽带扫频功能.实验结果证明了方案的正确性. |
| 关 键 词： | DDS PLL 宽带 相位噪声 扫频源 |
| 文章编号： | 1004-373X（2005）24-123-04 |
| 收稿时间： | 2005-07-25 |
| 修稿时间： | 2005年7月25日 |
Design of Broadband Phase Locked Sweep Frequency Source |
|
| DENG Xianjin,LI Jiayin,ZHANG Jian.Design of Broadband Phase Locked Sweep Frequency Source[J].Modern Electronic Technique,2005,28(24):123-126. | |
| Authors: | DENG Xianjin LI Jiayin ZHANG Jian |
| Affiliation: | 1. School of Physical Electronics, University of Electronic Science and Technology of China,Chengdu, 610054,China; 2. Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang, 621900, China |
| Abstract: | According to design goals of sweep frequency source,a new scheme is presented by making the best of advantages of DDS -driven PLL and DDS -generated frequency offset, which are firstly analyzed and compared. And its feasibility is shown. It indicates that this scheme can get low phase noise for wideband frequency source by effectively reduced multiple N. At the same time, the merits of DDS such as super fine frequency resolution,high frequency accuracy,easy programmed and in combination with the excellent character of narrow -band tracing filter merits of PLL make the little step and process control sweep function easily achieved. At last ,the experimental result proved the rationality of this method. |
| Keywords: | DDS PLL wideband phase noise sweep frequency source |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |