J Med Syst - Optimization of noise in non-integrated instrumentation amplifier for the amplification of very low electrophysiological [corrected] signals. Case of electro cardio graphic signals (ECG).

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Resumo

In this paper we present an instrumentation amplifier with discrete elements and optimized noise for the amplification of very low signals. In amplifying signals of very weak amplitude, the noise can completely absorb these signals if the used amplifier does not present the optimal guarantee to minimize the noise. Based on related research and re-viewing of recent patents Journal of Medical Systems, 30:205-209, 2006, we suggest an approach of noise reduction in amplification much more thoroughly than re-viewing of recent patents and we deduce from it the general criteria necessary and essential to achieve this optimization. The comparison of these criteria with the provisions adopted in practice leads to the inadequacy of conventional amplifiers for effective noise reduction. The amplifier we propose is an instrumentation amplifier with active negative feedback and optimized noise for the amplification of signals with very low amplitude. The application of this method in the case of electro cardio graphic signals (ECG) provides simulation results fully in line with forecasts.

Resumo Limpo

paper present instrument amplifi discret element optim nois amplif low signal amplifi signal weak amplitud nois can complet absorb signal use amplifi present optim guarante minim nois base relat research review recent patent journal medic system suggest approach nois reduct amplif much thorough review recent patent deduc general criteria necessari essenti achiev optim comparison criteria provis adopt practic lead inadequaci convent amplifi effect nois reduct amplifi propos instrument amplifi activ negat feedback optim nois amplif signal low amplitud applic method case electro cardio graphic signal ecg provid simul result fulli line forecast

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