The Transactions of the Korean Institute of Electrical Engineers D (대한전기학회논문지:시스템및제어부문D)

The Korean Institute of Electrical Engineers (대한전기학회)
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Rejecting Interference in Electrical Impedance Measurements by Using Spread Spectrum Technique

전기 임피던스를 측정할 때 외부 간섭을 제거하기 위한 대역확산 기술의 적용

  • Published : 2006.04.01
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Abstract

When we measure electrical impedance of a small object, such as an electronic component, external interference or jamming signal can be rejected by shielding the object. However, when we measure impedance of a large object, such as a human body, shielding is not easy and severe error due to the external interference could be introduced. In this paper, spread spectrum technique applicable to bioimpedance measurements for rejecting external interference without shielding is introduced. The improvement in signal-to-jamming ratio by the spread spectrum technique was experimentally confirmed.

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References

  1. Boone, K. G., and Holder, D. S.: 'Current approaches to analogue instrumentation design in electrical impedance tomography', Physiol. Meas., 1996, 17, pp. 229-247 https://doi.org/10.1088/0967-3334/17/4/001
  2. Riu, P. J., Rosell, J., Lozano, A., and Pallas-Areny, R.: 'Multi-frequency static imaging in eletrical impedance tomography: Part 1 instrumentation requirements', Med. & Biol. Eng. & Comp., 1995, 33, pp. 784-792 https://doi.org/10.1007/BF02523010
  3. S.Grimnes and O.G. Martinsen, Bioimpedance & Bioelectricity Basics, Academic Press, 2000
  4. R. E. Ziemer and W. H. Tranter, Principles of Communication, John Wiley & Sons, 4th edition, 1995