摘要
讨论了几种不同类型的数字频率合成技术,对比了直接数字频率合成(DDS)和其他频率合成方法的优缺点.以FPGA为基础,采用硬件描述语言来设计一种新型的频率合成器.实验结果证明该直接数字频率合成器具有带宽很宽、相位噪声低、频率分辨率很高的优点.在各种仪器或设备中使用该频率合成器,整体上可降低系统成本,提高系统的集成度和可靠性.
The paper discusses several different types of digital frequency synthesis, compares the difference of direct digital frequency synthesis （DDS） and other frequency synthesis. A new frequency synthesizer that is designed by FPGA and HDL is chosen to design. The experimental result certifies that the direct digital frequency synthesizer has many advantages, such as wide bandwidth, low phase noise and high frequency resolution. If it is used in instruments and apparatus, it will keep down the cost, improve integration level and reliability of system.
出处
《微电子学与计算机》
CSCD
北大核心
2009年第1期130-132,136,共4页
Microelectronics & Computer
