基于DDS的正弦波信号发生器的设计  

Design of digital transmitter based on FPGA

作　　者：崔唯佳[1] 高磊[1] 陈晓军[1] 

机构地区：[1]中北大学信息探测与处理技术研究所,山西太原030051

出　　处：《电子测试》2011年第8期13-15,共3页Electronic Test

基　　金：国家自然科学基金资助项目(60532080)

摘　　要：在频率合成领域中,直接数字合成(DDS)是近年来新的技术,它是从相位概念出发直接合成所需波形的一种新的全数字技术的频率合成方法。本文研究基于直接数字合成(DDS)技术的任意波形发生器(AWG)系统设计。以DDS技术为核心,采用FPGA芯片作为系统的硬件实现平台,利用VHDL语言编程实现正弦波的标准波形。结构紧凑,电路简单,输出波形稳定性好,系统可扩展性强。使用数字信号,克服了模拟信号冗余量大不易处理的缺陷,操作实践表明该系统能可靠运行。In the field of frequency synthesized,direct digital synthesis （DDS） is a new technology in recent years,it is from phase concept of direct synthesis waveform of a new complete digital technology of frequency synthesis method.The system of arbitrary waveform generator and its software design based on direct digital synthesizer（DDS） technology have been discussed in detail.A theoretical analysis of the system perfo rmance is also given.The multi waveform generator adopts direct digital frequency,or DDS as the center,As the system based on FPGA chip realization of hardware platform,using VHDL language programming realize sine wave of standard waveforms.This system has features of compactmodule,simple circuit powerful functions and flexible expansion.Digital signal are used to overcome the shortcomings of analog signal that is,analog signal have large amount of redundancy and are not easy to deal with.The system can run reliably in practice.

关 键 词：DDS FPGA 正弦波信号发生器 

分 类 号：TN741[电子电信—电路与系统]