US 12,102,420 B2
Direct RF signal processing for heart-rate monitoring using UWB impulse radar
Yu Rong, Phoenix, AZ (US); and Daniel W. Bliss, Scottsdale, AZ (US)
Assigned to Arizona Board of Regents on Behalf of Arizona State University, Scottsdale, AZ (US)
Appl. No. 17/277,596
Filed by Arizona Board of Regents on behalf of Arizona State University, Scottsdale, AZ (US)
PCT Filed Sep. 27, 2019, PCT No. PCT/US2019/053425
§ 371(c)(1), (2) Date Mar. 18, 2021,
PCT Pub. No. WO2020/072297, PCT Pub. Date Apr. 9, 2020.
Claims priority of provisional application 62/740,651, filed on Oct. 3, 2018.
Prior Publication US 2021/0353156 A1, Nov. 18, 2021
Int. Cl. A61B 5/024 (2006.01); A61B 5/00 (2006.01); A61B 5/05 (2021.01); A61B 5/0507 (2021.01); G01S 13/02 (2006.01); G01S 13/524 (2006.01); G01S 13/88 (2006.01)
CPC A61B 5/024 (2013.01) [A61B 5/05 (2013.01); A61B 5/0507 (2013.01); A61B 5/7207 (2013.01); G01S 13/0209 (2013.01); G01S 13/524 (2013.01); G01S 13/88 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for continuously measuring heart rate, comprising:
transmitting a series of radar impulses toward a subject;
receiving a radio frequency (RF) response signal corresponding to the series of radar impulses;
sampling the RF response signal to generate a sampled response signal at an RF band, wherein the RF response signal comprises a plurality of captured radar frames;
applying a harmonics bandpass filter to the sampled response signal to identify a time delay of interest in the plurality of captured radar frames;
measuring a heart rate of the subject from the sampled response signal at the RF band and without a baseband conversion.