Key result
Two novel common-mode noise reduction circuit designs based on electrode-body impedance imbalance cancellation showed effectiveness in noise rejection and good linearity for capacitance.
Why the study?
Noncontact electrodes can pick up high common-mode noise due to electrode-body impedance imbalance reducing amplifier CMRR, which is hardly solved with passive filtering.
Comparison
Novel common-mode noise reduction circuit designs vs conventional approach
Design
Circuit analysis, simulation, and experimental evaluation study
Authors
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May enhance noncontact biopotential monitoring; leaves open clinical validation and outcome studies.
Novel circuit designs based on electrode-body impedance imbalance cancellation effectively reduce common-mode noise in noncontact biopotential acquisition systems.
Chen et al. (2020) studied this question. Common-mode noise reduction circuit designs based on electrode-body impedance imbalance cancellation vs. Conventional approach was evaluated on Common-mode noise rejection and electrode-body impedance imbalance detection. Two novel common-mode noise reduction circuit designs based on electrode-body impedance imbalance cancellation showed effectiveness in noise rejection and good linearity for capacitance.
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