Research of Frequency Synthesizers Technology Based on DDS Array

Spectral purity and frequency capacity are performance barriers of Direct Digital Frequency Synthesizers (DDS) that designers are striving to break. Traditionally, spurious signals are reduced by ways of better algorithms and improvements on DDS structure. In this paper a novel spur reduction method, DDS array method, is proposed and its performance is analyzed. And an experiment on the technology is operated to verify its feasibility.