Non-contact Low Power EEG/ECG Electrode for High Density Wearable Biopotential Sensor Networks

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 46dB over a 1-100Hz bandwidth. Signals are digitized directly on board with a 16-bit ADC. The coin sized electrode consumes 285

• Type: Journal
• Year: 2009
• Where: BSN
• Authors: Yu M. Chi, Stephen R. Deiss, Gert Cauwenberghs
• Keywords: BSN 2009, Capacitive Biopotential Electrode, Sensor Networks, Single Conductive Sheet