摘要
介绍了一种基于DDS(直接数字合成)技术的频率合成器。该频率合成器能够根据外部的参数设置完成任意频率(频率范围0.023Hz-35MHz)、多种模式(调频、调相及调幅等)的正弦波以及方波等波形输出。实验结果表明,该频率合成器输出的信号幅度稳定,具有频谱纯度较高、频率分辨率高以及频率捷变时间短等优点。
Direct Digital Synthesis (DDS) is an up-to-date technology for generating frequency signal. The frequency synthesizer designed with this technology can generate sine/square wave of any frequency (0.023 Hz to 35 MHz) with multiple modes (FM, DM and AM) according to preset parameters. It leads to constant amplitude, higher spectrum purity, higher frequency resolution and improved frequency agility.
出处
《电光与控制》
2003年第4期28-30,37,共4页
Electronics Optics & Control
