摘要
介绍DDS的工作原理，设计完成以DDS器件AD9951为核心、频率范围为30～125MHz的射频正弦波信号发生器系统，可通过计算机RS232串口设置输出频率和幅度。对系统进行测试，结果表明该系统性能良好。并分析射频信号链路各部分对输出射频信号的影响。
This paper introduces the working principle of DDS and the system design of a radio frequency sine wave signal generator, which uses a DDS IC AD9951 as the core,its frequency range is from 30MHz to 125MHz,it realizes set of output frequency and amplitude through the PC RS232 series port.The test result shows that the system has good performance,then analyzes the effect of every single part of the RF signal route on the output signal.
出处
《电子设计工程》
2009年第9期71-72,79,共3页
Electronic Design Engineering
基金
国家863基金项目(07K3541200)
