基于FPGA的数字AM调制的实现

Implementation of Digital Amplitude Modulation Based on FPGA

近年来,数字AM调制技术应用越来越广泛,具体应用中多采用专用的调制芯片完成。文中介绍一种在FPGA中实现数字AM调制的方法,采用该方法设计的系统具有使用灵活、扩展性强、便于集成等优点。文中先讨论了采用M at-lab的S imu link工具建立仿真模型进行仿真测试,然后用的FPGA芯片实现,并下载验证。经验证,系统可实现AM调幅功能。同时,该方法已应用于DDS设计中,各项性能指标均达到设计要求。

Nowadays,digital AM modulation technology is used more and more widely,which is realized by a dedicated chip in most specific application.This paper presented a method of digital AM modulation using FPGA.The system used the method is flexible,extensible,and easy to integrate.A simulation model created by Matlab Simulink was introduced and then the implementation and validation in FPGA were discussed.Experimental results show that the system can realize AM modulation.Meanwhile,this method has already been applied in practical applications and all the performance indicators meet the design requirement.