Common-mode noise reduction circuit design for biosignal acquisition system-in comparison with the DRL

Chen M, Wang J, Anzai D, Fischer G (2019)

Publication Type: Journal article

Publication year: 2019

Journal

IEEJ Transactions on Fundamentals and Materials The Institute of Electrical Engineers of Japan

Book Volume: 139

Pages Range: 657-662

Journal Issue: 12

DOI: 10.1541/ieejfms.139.657

Abstract

Common-mode (CM) noise is a primary interference to biological signal (biosignal) detection systems, but is hardly solved with passive filtering. Conventionally, a driven-right-leg (DRL) circuit is employed to drive down the CM noise level. In this work, We first clarified how much influence an imbalance in the contact resistance could have for three different kinds of circuits, and then proposed a novel design of imbalance cancellation circuit using the digital potentiometer(digiPOT). Simulation evaluations were performed and the results showed that our circuit design can exceed the DRL by more than 20 dB in reducing the CM noise under the same conditions.

Authors with CRIS profile

Georg Fischer Professur für Technische Elektronik

Involved external institutions

Nagoya Institute of Technology / 名古屋工業大学 Nagoya Kōgyō Daigaku JP Japan (JP)

How to cite

APA:

Chen, M., Wang, J., Anzai, D., & Fischer, G. (2019). Common-mode noise reduction circuit design for biosignal acquisition system-in comparison with the DRL. IEEJ Transactions on Fundamentals and Materials, 139(12), 657-662. https://dx.doi.org/10.1541/ieejfms.139.657

MLA:

Chen, Minghui, et al. "Common-mode noise reduction circuit design for biosignal acquisition system-in comparison with the DRL." IEEJ Transactions on Fundamentals and Materials 139.12 (2019): 657-662.

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