FPGA-based Digital Phase-Sensitive Demodulator for EIT System

  title={FPGA-based Digital Phase-Sensitive Demodulator for EIT System},
  author={Kou Ge and Rong Lifeng},
  journal={2007 8th International Conference on Electronic Measurement and Instruments},
  • Kou Ge, Rong Lifeng
  • Published 2007 in
    2007 8th International Conference on Electronic…
Electrical impedance tomography (EIT) requires high precision voltage measurement to reconstruct image. In this paper a novel FPGA-based digital phase-sensitive demodulator designed for EIT system is put forward. Unlike the traditional analog multiplier demodulator of poor dynamic behavior and high noise, the digital demodulation is used to obtain both in-phase and quadrature components of the voltage signal with high SNR, high data precision and high demodulation speed. This paper first… CONTINUE READING


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