MULTITUNABLE MICROWAVE SYSTEM FOR TOUCHLESS HEARTBEAT DETECTION AND HEART RATE VARIABILITY EXTRACTION

摘要

This work proposes a contactless multitunable microwave measurement scheme for heartbeat detection. Our system is based on simplicity and the ability of tuning two parameters: frequency and power. Measurements are performed at 2.4, 5.8, 10, 16, and 60 GHz. Operating at 2.4 GHz, the heartbeat signal is detected at different output power levels (from -2 down to -27 dBm). The heart rate variability is extracted for all the measurements.