Design and Implementation of Short-wave Frequency Source Based on DDS Device
Zhang Ling-di · Electronic Science and Technology · 2011
The structure and principles of direct digital synthesizer(DDS) are introduced,and key technologies of DDS are introduced into the frequency source.A low noise frequency source based on MCU+new DDS device is designed with a range of frequency of 46.5~75 MHz.Some relevant tests are carried out after the frequency source circuit finished.Experiments show that the frequency synthesizer has the features of precise resolution and low phase turning noise.