This paper presents a wearable active concentric electrode for concurrent EEG monitoring and Body-Coupled Communication (BCC) data transmission. A three-layer concentric electrode eliminates the usage of wires. A common mode averaging unit (CMAU) is proposed to cancel not only the continuous common-mode interference (CMI) but also the instantaneous CMI of up to 51V _pp . The localized potential matching technique removes the ground electrode. An open-loop programmable gain amplifier (OPPGA) with the pseudo-resistor-based RC-divider block is presented to save the silicon area. The presented work is the first reported so far to achieve the concurrent EEG signal recording and BCC-based data transmission. The proposed chip achieves 100 dB CMRR and 110 dB PSRR, occupies 0.044 mm ² , and consumes 7.4 μW with an input-referred noise density of 26 nV/√Hz.

中文翻译：

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一种用于并发 EEG 记录和身体耦合通信 (BCC) 数据传输的有源同心电极

本文提出了一种可穿戴有源同心电极，用于 并发EEG 监测和身体耦合通信 (BCC) 数据传输。三层同心电极消除了导线的使用。共模平均单元 (CMAU) 不仅可以消除连续共模干扰 (CMI)，还可以消除高达 51V _pp的瞬时 CMI 。局部电位匹配技术去除了接地电极。提出了一种带有基于伪电阻器的 RC 分频器模块的开环可编程增益放大器 (OPPGA)，以节省硅片面积。所提出的工作是迄今为止首次报道实现并发 EEG 信号记录和基于 BCC 的数据传输。建议的芯片实现 100 dB CMRR 和 110 dB PSRR，占用 0.044 mm ² ，功耗为 7.4 μW，输入参考噪声密度为 26 nV/√Hz。