US 12,082,943 B2
System and method for vital signal sensing using a millimeter-wave radar sensor
Ashutosh Baheti, Munich (DE); Reinhard-Wolfgang Jungmaier, Alkoven (AT); Avik Santra, Munich (DE); and Saverio Trotta, Munich (DE)
Assigned to Infineon Technologies AG, Neubiberg (DE)
Filed by Infineon Technologies AG, Neubiberg (DE)
Filed on Feb. 25, 2022, as Appl. No. 17/652,608.
Application 17/652,608 is a division of application No. 15/872,701, filed on Jan. 16, 2018, granted, now 11,278,241.
Prior Publication US 2022/0175314 A1, Jun. 9, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/05 (2021.01); A61B 5/00 (2006.01); A61B 5/024 (2006.01); A61B 5/0245 (2006.01); A61B 5/0507 (2021.01); A61B 5/35 (2021.01); G01S 7/03 (2006.01); G01S 7/41 (2006.01); G01S 13/32 (2006.01); G01S 13/536 (2006.01); G01S 13/88 (2006.01); H01L 23/52 (2006.01); H01L 23/538 (2006.01); H01L 25/065 (2023.01)
CPC A61B 5/681 (2013.01) [A61B 5/024 (2013.01); A61B 5/02438 (2013.01); A61B 5/02444 (2013.01); A61B 5/02455 (2013.01); A61B 5/0507 (2013.01); A61B 5/35 (2021.01); A61B 5/6831 (2013.01); G01S 7/032 (2013.01); G01S 7/415 (2013.01); G01S 13/32 (2013.01); G01S 13/536 (2013.01); G01S 13/88 (2013.01); H01L 23/52 (2013.01); H01L 23/5384 (2013.01); H01L 23/5385 (2013.01); H01L 25/0657 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a wearable object configured to be worn by a person; and
a millimeter-wave radar system mounted on the wearable object, the millimeter-wave radar system comprising:
a circuit board,
a millimeter-wave frequency modulated continuous wave (FMCW) radar sensor disposed on the circuit board, the millimeter-wave FMCW radar sensor configured to generate beat frequencies proportional to a distance between the millimeter-wave radar system and a sensed object,
a plurality of antennas coupled to the millimeter-wave FMCW radar sensor and disposed on the circuit board adjacent to the millimeter-wave FMCW radar sensor, and
a processing circuit coupled to the millimeter-wave FMCW radar sensor and disposed on the circuit board, wherein the processing circuit is configured to:
instruct the millimeter-wave FMCW radar sensor to perform a first set of radar measurements to produce a first set of radar data based on the beat frequencies from the millimeter-wave FMCW radar sensor,
determine a first set of range gate measurements from the first set of radar data,
determine high response range gates from the first set of range gate measurements,
apply a correction filter to the determined high response range gates in slow-time to produce corrected range gate data, the correction filter configured to correct for a coupling between the millimeter-wave FMCW radar sensor and the person, and
apply a vital signal filter to the corrected range gate data to determine vital signal information of the person.