基于FPGA和AD9951的可编程信号源

Design of Programmable Signal Source Based On FPGA and AD9951

提出一种基于可编程逻辑器件FPGA和直接数字频率合成(DDS)技术,产生各种信号的系统设计及其实现。简要介绍了系统中主要器件的选择及其特性,重点阐述了DDS的基本原理、系统的工作原理、硬件结构及各部分电路的详细设计,介绍了FPGA中控制电路的设计及程序的下载。给出了FPGA中控制电路的时序仿真波形,并验证了其可行性。系统采用FPGA和AD9951相结合,使得系统设计更加实用和广泛。

This paper gave a method to generate various signals,based on FPGA and DDS technology.It introduced the choices about the main chips of the system and their characteristics.It described the principle of DDS and the system,the hardware structure and the detailed circuits,and introduced the design of control circuit in FPGA and programming file loading of the system.The paper gave the waveform of timing simulation of the control circuit in FPGA,and validates its feasibility.This system design combines FPGA an...