Low-Cost Ultrapure Sine Wave Generation with Self-Calibration

  • Yuming Zhuang
  • Degang Chen


As data acquisition systems’ performance continues to increase, so does the need for a test and characterization solution that exceeds the currently available state-of-the-art instruments. This chapter presents a new method for generating ultrapure sine waves used in such applications. The pure sine wave is generated by readily available digital-to-analog converters (DACs) with distortions that may be thousand times worse than the required system’s purity. Readily available analog-to-digital converter (ADC) with similar purity as the DAC is utilized to measure the distortions generated by these DACs. An innovative algorithm is used to remove distortions present in the generated sine wave iteratively. Simulation results verify the proposed method by generating a − 140 dB ultrapure sine wave using two DACs and an ADC with −85 dB total harmonic distortion (THD). A test circuit board has been designed, and measurement results demonstrate the generated sine wave has a high purity capable of testing an ADC with −120 dB THD accurately.


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Yuming Zhuang
    • 1
  • Degang Chen
    • 2
  1. 1.Qualcomm IncSan DiegoUSA
  2. 2.Iowa State UniversityAmesUSA

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