Document Type
Article
Publication Date
10-2020
Abstract
Direct digital synthesis (DDS) architectures are becoming more prevalent as modern digital-to-analog converter (DAC) and programmable logic devices evolve to support higher bandwidths. The DDS architecture provides the benefit of digital control but at a cost of generating spurious content in the spectrum. The generated spurious content may cause intermodulation distortion preventing proper demodulation of the received signal. The distortion may also interfere with the neighboring frequency bands. This article presents the various DDS architectures and explores the DDS architecture which provides the most digital reconfigurability with the lowest spurious content. End-to-end analytical equations, numerical and mathematical models are developed to determine the location and power levels of spurs. Afterwards, the analytical equations, numerical and mathematical models are shown to be consistent with the experimental data. A developer can use the information to design a DDS architecture that meets their minimum requirements.
DOI
10.1109/OJCOMS.2020.3027974
Source Publication
IEEE Open Journal of the Communications Society
Recommended Citation
P. R. Patel and R. K. Martin, "End-to-End Direct Digital Synthesis Simulation and Mathematical Model to Minimize Quantization Effects of Digital Signal Generation," in IEEE Open Journal of the Communications Society, vol. 1, pp. 1647-1657, 2020, doi: 10.1109/OJCOMS.2020.3027974.
Comments
© The Authors
This is an open access article published by IEEE and distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. CC BY 4.0
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