基于ISP技术的数字频率扫描信号发生系统

The direct digital synthesizing frequency sweep signal system based on the technique of ISP

本文介绍了利用Isp芯片Lattice公司的ispLSI1032E以及DDS频率合成器AD7008构成的数字频率扫描信号发生系统,本系统可以任意设置信号的起始频率、终止频率、信号幅值以及信号在每个频率保持的时间,系统自动以一定的频率步进量完成频率扫描,频率改变不会影响波形的连续性,也不会造成的相位的突变,真正实现频率的线性连续变化。

This paper introduces , which is made up of IS-PLSI1032 and AD7008. Start frequency ,stop frequency ,span of frequency ,and sweep time of the signal can be set freely. The amplitude and phase of signal doesn' t effect by the change of sweep frequency signal.