US 11,808,837 B2
Method of operating radar sensor systems with time sequenced high pass filters
Francesco Belfiore, Catania (IT); Salvatore Scaccianoce, Catania (IT); Amedeo Michelin Salomon, Messina (IT); and Antonino Calcagno, Messina (IT)
Assigned to STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed by STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed on Dec. 6, 2021, as Appl. No. 17/543,175.
Application 17/543,175 is a continuation of application No. 16/273,737, filed on Feb. 12, 2019, granted, now 11,194,035.
Claims priority of application No. 102018000002649 (IT), filed on Feb. 13, 2018.
Prior Publication US 2022/0091250 A1, Mar. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 13/53 (2006.01); G01S 7/285 (2006.01); G01S 13/931 (2020.01); G01S 13/34 (2006.01); G01S 13/42 (2006.01); G01S 13/536 (2006.01); G01S 7/35 (2006.01); G01S 7/03 (2006.01); G01S 7/41 (2006.01); G01S 7/282 (2006.01)
CPC G01S 13/53 (2013.01) [G01S 7/03 (2013.01); G01S 7/282 (2013.01); G01S 7/285 (2013.01); G01S 7/354 (2013.01); G01S 7/41 (2013.01); G01S 13/343 (2013.01); G01S 13/42 (2013.01); G01S 13/536 (2013.01); G01S 13/931 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of operating a radar sensor system, the method comprising:
frequency down-converting, at a mixer, a received signal reflected from a target to an intermediate frequency signal, the received signal comprising a sequence of chirp ramps; and
at each chirp ramp, high-pass filtering the intermediate frequency signal,
with a first corner frequency during a first time segment of the chirp ramp, and
with a second corner frequency during a second time segment of the chirp ramp, the first corner frequency being higher than the second corner frequency.