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Rejecting Interference in Electrical Impedance Measurements by Using Spread Spectrum Technique  

Kang, Hyun-Kag (대전대학 전자공학과)
Hwang, In-Duk (대전대학 전자공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers D / v.55, no.4, 2006 , pp. 195-197 More about this Journal
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.
Keywords
Bioimpedance; Impedance Analysis; Spread Spectrum; Jamming; Interference;
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