Compact Millimeter Wave Radar for Vital Sign Detection: A Comprehensive Study

With the increased interest of non-contact vital sign detection, the need for a small, compact radar has emerged. The development of millimeter-wave radars and Antenna-on-Package (AoP) solutions provides a solution for a portable, small form factor device. In this paper, a commercial, compact millimeter wave radar operating at 60 GHz is used to accurately detect vital signs. With the use of a super-resolution direction of arrival algorithm, digital beamforming, and a frequency carving algorithm, various experiments, involving multi-subjects and drywall, are performed to demonstrate the accuracy and versatility of the radar system.