Research on parallel direct digital synthesis technology based on FPGA
Zhilin Huang · Modern Electronics Technique · 2013
Narrow output frequency band is one of the key factors to restrict DDS′s application.This paper provided the principle of multi-channel parallel direct digital synthesis and its application,In this design,when the output signal frequency covers 400～700 MHz,the clutter suppression is above 50 dBc and the frequency resolution is below 0.5 Hz.It is easy to modu late anytime.The circuit has the advantages of simple interface,and flexible use,and it can be used in broadband and high fre quency resolution signal production field such as radar and electronic warfare.