摘要
以集成的直接数字合成器(DDS)AD9851为核心,利用现场可编程门阵列(FPGA)及外围测量电路,设计并实现了一个频率特性测试仪,可用于测试某一特定网络的频率特性。并给出了幅频和相频特性曲线,并采用软件修正方法提高了整个系统输出的稳定性和可靠性。
Based on the integrated DDS chip AD9851,FPGA and external circuits,a tester for frequency response characteristic is designed and implemented.h is able to measure the frequency response characteristic for a certain network and display the amplitude-frequency and phase-frequency curves.And the output stability and reliability of the whole system is enhanced by software.
出处
《国外电子元器件》
2008年第12期9-11,共3页
International Electronic Elements
关键词
幅频特性
相频特性
现场可编程门阵列(FPGA)
单片机
DDS
amplitude frequency characteristic
phase frequency characteristic
field programmable gate array（FPGA）
MCU
DDS
