A non-contact capacitive biopotential electrode was developed, featuring a differential gain of 46 dB over a 1-100 Hz bandwidth and consuming 285 µA from a 3.3 V supply.
The development of a low-power, non-contact capacitive electrode enables high-density wearable biopotential sensor networks for EEG/ECG monitoring without explicit signal ground connections.
A non-contact capacitive biopotential electrode with a common-mode noise suppression circuit is presented. The sensor network utilizes a single conductive sheet to establish a common body wide reference line, eliminating the need for an explicit signal ground connection. Each electrode senses the local biopotential with a differential gain of 46 dB over a 1-100 Hz bandwidth. Signals are digitized directly on board with a 16-bit ADC. The coin sized electrode consumes 285 ¿A from a single 3.3 V supply, and interfaces with a serial data bus for daisy-chain integration in body area sensor networks.
Yu et al. (Mon,) reported a other. Non-contact capacitive biopotential electrode was evaluated. A non-contact capacitive biopotential electrode was developed, featuring a differential gain of 46 dB over a 1-100 Hz bandwidth and consuming 285 µA from a 3.3 V supply.
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