US 11,719,763 B2
Stray field rejection in magnetic sensors
Gael Close, Morges (CH); Arnaud Laville, Neuchatel (CH); Stefan Rigert, Malters (CH); and Samuel Huber Lindenberger, Jenaz (CH)
Assigned to MELEXIS TECHNOLOGIES SA, Bevaix (CH)
Filed by Melexis Technologies SA, Bevaix (CH)
Filed on Jul. 29, 2022, as Appl. No. 17/876,953.
Application 17/876,953 is a continuation of application No. 17/018,775, filed on Sep. 11, 2020, granted, now 11,435,413.
Application 17/018,775 is a continuation of application No. 16/118,638, filed on Aug. 31, 2018, granted, now 10,809,314, issued on Oct. 20, 2020.
Claims priority of application No. 17190942 (EP), filed on Sep. 13, 2017.
Prior Publication US 2022/0365147 A1, Nov. 17, 2022
Int. Cl. G01R 33/00 (2006.01); G01D 18/00 (2006.01); G01D 5/14 (2006.01); G01R 33/07 (2006.01); G01R 35/00 (2006.01)
CPC G01R 33/0017 (2013.01) [G01D 5/142 (2013.01); G01D 18/00 (2013.01); G01R 33/0041 (2013.01); G01R 33/07 (2013.01); G01R 35/00 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A field-gradient sensor device comprising:
a reference field sensor providing a reference sensor signal in response to a field,
a calibrated field sensor providing a calibrated sensor signal in response to the field,
a reference circuit connected to the reference field sensor and adapted to receive a reference signal,
an adjustable circuit connected to the calibrated field sensor and adapted to receive a calibrated signal,
wherein, when the adjustable circuit is adjusted with the calibrated signal, said calibrated signal being different from the reference signal, the calibrated field sensor provides a calibrated sensor signal substantially equal to the reference sensor signal,
wherein said field-gradient sensor device is arranged to determine a difference signal or gradient signal based on the reference sensor signal and the calibrated sensor signal.