一种多功能正弦信号发生器的设计  

Design of a multi-function sine wave signal generator

作　　者：李璐[1] 李腾飞[1] 李飞飞[1] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430079

出　　处：《微型机与应用》2011年第19期28-30,共3页Microcomputer & Its Applications

摘　　要：介绍了一种以FPGA和单片机为控制核心,基于调制原理配合使用DDS专用芯片AD9851,实现了一种多功能正弦信号发生器。实现了在30Hz～12MHz频率范围内正弦信号的无失真输出,且在输出端接50Ω功率电阻的条件下,输出电压峰峰值在5.8V～6V范围内。系统还具有AM、FM、ASK、FSK、PSK调制的功能,整体工作稳定,界面友好,操作简单。The paper demonstrates a multi-function sine wave generator which takes FPGA and MCU as control core, used in conjunction with DDS chip AD981 and based on the principle of modulation. It achieves output sine signal in the frequency from 30 Hz to 12MHz without error, also when 501） resistance is connected to the power output, the output peak-to-peak voltage can reach to 5.8V or even to 6V. The system can accomplish AM, FM, ASK, FSK, PSK, and it is stable, friendly and simple to operate.

关 键 词：FPGA 单片机 DDS 调制 

分 类 号：TM933[电气工程—电力电子与电力传动]