摘要
针对直接数字频率合成芯片AD9850频率分辨率高、稳定性好和相位分辨率低的特点,对AD9850的相位功能进行开发。采用单片机控制的方式,通过软件延时的方法,使AD9850的相位调整精度得到较大提高,可以满足双路高精度线性调频调相信号源的实际应用需要。
Direct Digital Synthesis （DDS） chip AD9850 has several characters, such as it has a high resolution, good stability and low phase resolution. In view of all these characters, this paper mainly improves the phase resolution. MCU is acted as the control center. Through the method of software delay the phase resolution is greatly promoted. And the frequency and phase may be adjusted respectively.
出处
《电子测量技术》
2005年第5期9-10,14,共3页
Electronic Measurement Technology
