Effects of Receiver Beamforming for Vital Sign Measurements Using FMCW Radar at Various Distances and Angles

• Published in: Sensors (Basel, Switzerland) Vol. 22; no. 18; p. 6877
• Main Authors: Ahmed, Shahzad, Park, Junbyung, Cho, Sung Ho
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.09.2022; MDPI
• Subjects: Antennas (Electronics); Beamforming; digital healthcare; Evacuations & rescues; Feasibility studies; frequency modulated continuous wave radar; Heart beat; Measurement; Methods; Radar; Radar systems; Sensors; Signal processing; Testing; vital sign extraction; United States

Short-range millimeter wave radar sensors provide a reliable, continuous and non-contact solution for vital sign extraction. Off-The-Shelf (OTS) radars often have a directional antenna (beam) pattern. The transmitted wave has a conical main lobe, and power of the received target echoes deteriorate a...