An Improved Direct Digital Synthesizer with Reduced Spurious Noise
Tan Yi · 2002
Direct digital frequency synthesizer (DDS) is a digital system, so it inevitably has spurious noise, which is the key factor limiting the application of DDS In this paper, an analysis of the spurious noise in DDS is made An improved DDS structure with reduced spurious noise is designed by using Verilog HDL language Simulation by Matlab indicates that the spurious noise in the DDS decreases evidently, and the signal to noise ratio (SNR) is increased by 36 dB