Millimeter-wave radar for vital signs monitoring

Abstract

We present a new type of sensor for vital signs monitoring. The primary advantages of the millimeter-wave radar are ability to operate remotely, without electrodes or wires and through any clothing or fur. Since radar carrier wavelength is about 3 mm, we achieve significant noise immunity, sensitivity and accuracy. Thus it is not only detector, but a powerful tool for exploring heart and respiration mechanics. Series of lab tests with animals (rat, rabbit) and human were carried out. Experimental human heartbeat measurement data for monitoring distance of 2 meters is shown and compared to data from a commercial portable ECG device.