The Discrete Fourier Transform of Direct Digital Synthesis in the presence of phase truncation

Yuanyuan Song, Dazhi Zeng*, Tao Zeng

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper introduces an accurate and simple method by using Discrete Fourier Transform (DFT) to calculate the spectrum of Direct Digital Synthesis (DDS) in the presence of phase truncation. The analysis results show the relationships between spectrums of different output signals and different Frequency Control Words (FCW). By obtaining the spurious spectrum location and the spurious amplitude we can compute the Spurious Free Dynamic Range (SFDR) directly. This method greatly reduces the amount of computation and has the guiding significance in the practical application.

Original languageEnglish
Title of host publicationICTM 2009 - 2009 International Conference on Test and Measurement
Pages103-106
Number of pages4
DOIs
Publication statusPublished - 2009
Event2009 International Conference on Test and Measurement, ICTM 2009 - Hong Kong, Hong Kong
Duration: 5 Dec 20096 Dec 2009

Publication series

NameProceedings of the International Symposium on Test and Measurement
Volume2

Conference

Conference2009 International Conference on Test and Measurement, ICTM 2009
Country/TerritoryHong Kong
CityHong Kong
Period5/12/096/12/09

Keywords

  • DDS
  • DFT
  • Phase truncation
  • SFDR

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