Ultra-Low Power Multi-Modal Sensor Interface Circuits and Systems for Personalized Physiological Monitoring

Peng Wang
Personal healthcare devices are developing towards multi-parameter physiological tracking for a more comprehensive assessment of users’ health conditions. Based on two critical physiological signals, Photoplethysmography (PPG) and Electrocardiography (ECG), various vital parameters, such as heart rate, blood oxygen saturation (SpO2), and blood pressure, are derivable. The emerging energy harvesting technologies can potentially enable self-sustainable, free-of-interruption healthcare devices that track users’ health parameters continuously. However, the available power density (∼20μW/cm2) from the ambient environment does not...
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