Abstract
Biomedical technologies help countless patients in improving the quality of managing health. The latest trend in biomedical engineering includes tissue bioengineering, biosensors, enhanced bone regeneration; and bioinstrumentation. Electrocardiogram (ECG) a very popular tool in medical science records the electrical activity of the heart. Its interpretations & usefulness have created a revolution in Cardiology. It involves measuring the potential difference between two points or measuring the dipole moment of the heart when it contracts and relaxes. There are various noises present in the signal. In this paper, the authors have designed filters for the elimination of electromyography noise and baseline wander noise present in ECG signal. The filters are designed and simulated using various approaches namely operational amplifier, a two-stage operational amplifier (2SOA), an operational transconductance amplifier (gm amplifier). The theoretical values are evaluated and compared using simulated results. The theoretical and practical values agree with each other. Also, current amplifiers (2SOA and gm amplifier) results in better gain improvement in comparison to operational amplifier
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