Compensated transconductance driven-right-leg circuit

To improve the common-mode rejection of the transconductance driven-right-leg (TDRL) circuit in biopotential measurements, despite uncertainties of the values of the electrical parameters, a simple and effective compensation scheme is proposed in this study. The proposed compensator does not degrade the stability and the other advantages which are offered by the uncompensated TDRL. The performance of the proposed method is explained in detail. Finally, the simulation and experimental results are presented, confirming the effectiveness of the proposed method.