A Portable Noncontact Heartbeat and Respiration Monitoring System Using 5-GHz Radar

A portable noncontact heartbeat and respiration monitoring system operating in 5-GHz band is reported in this letter. Compared with the previously reported system operating at Ka-band, this system has been simplified to include only two PCB antennas, a palm-size PCB radio module, a data acquisition module, and a laptop. The system, powered by the laptop battery through USB connection, is compact, low-cost, and convenient for field test. A detection accuracy of better than 80% has been achieved at a distance of 2.8 m and at a low transmitted power of 20 muW. The system can be used for various applications in biology, medicine, and security.

[1]  M. Skolnik,et al.  Introduction to Radar Systems , 2021, Advances in Adaptive Radar Detection and Range Estimation.

[2]  M. C. Budge,et al.  Range correlation effects in radars , 1993, The Record of the 1993 IEEE National Radar Conference.

[3]  Jenshan Lin,et al.  Accuracy of A Low-Power Ka-Band Non-Contact Heartbeat Detector Measured from Four Sides of A Human Body , 2006, 2006 IEEE MTT-S International Microwave Symposium Digest.

[4]  Jenshan Lin,et al.  Frequency-tuning technique for remote detection of heartbeat and respiration using low-power double-sideband transmission in the ka-band , 2006, IEEE Transactions on Microwave Theory and Techniques.

[5]  Changzhi Li,et al.  Robust Overnight Monitoring of Human Vital Signs by a Non-contact Respiration and Heartbeat Detector , 2006, 2006 International Conference of the IEEE Engineering in Medicine and Biology Society.

[6]  Jenshan Lin,et al.  A Ka-Band Low Power Doppler Radar System for Remote Detection of Cardiopulmonary Motion , 2005, 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference.