HIGH-PERFORMANCE TWO-PHASE SINE WAVE GENERATOR FOR IMPEDANCE BRIDGES

• Abstract:

  The paper describes the experimental study of a two-phase sine wave generator intended for use in an impedance metrology. It is based on a 20-bit digital-to-analog converter (DAC) based on the R-2R architecture. Some tests for evaluation of the generator were carried out. The excellent parameters of the DAC made possible achieve a very good stability of the complex voltage ratio which is about ± 0.25 part in 10⁶ for the amplitude ratio and less than ± 0.25 µrad for the phase difference.
• Keywords:

  digital waveform synthesis, impedance bridge, precise measurement
• Download:

  IMEKO-WC-2015-TC4-126.pdf
• DOI:

  _unreg_wc-2015.126

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