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Heartbeat rate and heart rate variability Extraction using ultrasonic transducer

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Abstract

This paper presents a Doppler radar system used to detect the heartbeat signal from a distance of one meter. The proposed system is based on using a ultrasonic transceiver and two antennas. Measurements are performed at 2 GHz for different power levels between 0 and -25 dBm. Both heartbeat rate and heart rate variability are extracted and compared to a simultaneous ECG signal.