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. Author manuscript; available in PMC: 2023 Feb 17.
Published in final edited form as: IEEE Trans Biomed Circuits Syst. 2022 Feb 17;15(6):1419–1429. doi: 10.1109/TBCAS.2021.3131642

Fig. 1.

Fig. 1.

Block diagram of differential N-channel biopotential acquisition system topologies: (a) conventional active electrodes (AEs) with one wire per AE channel, and (b) FDM-based active electrodes (AEs) that share two wires for multiple AE channels.