Title :
Measurement of the anisotropy fields for AMR sensors
Author :
Ouyang, J. ; Chen, S. ; Zhang, Y. ; Jin, F. ; Yang, X.F.
Author_Institution :
Dept. of Electron. Sci. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
If the outputs of flipped AMR sensors are fitted by polynomial regression taking crossfields as the independent variables, anisotropy fields could be calculated by the ratio of zero-order items to second-order items. Test results verified that the anisotropy fields of the x, y, z axial AMR sensor (Honeywell HMR2300) were 0.778 mT, 0.829 mT, 0.820 mT, respectively. They were closed to the designed value (0.8 mT). And the crossfield errors were well compensated utilizing these field constants.
Keywords :
magnetic sensors; magnetic variables measurement; magnetoresistive devices; polynomials; regression analysis; AMR sensors; anisotropy field measurement; polynomial regression; second-order items; zero-order items; Anisotropic magnetoresistance; Coils; Films; Fitting; Magnetic field measurement; Magnetic sensors;
Conference_Titel :
Electron Devices and Solid-State Circuits (EDSSC), 2011 International Conference of
Conference_Location :
Tianjin
Print_ISBN :
978-1-4577-1998-1
Electronic_ISBN :
Pending
DOI :
10.1109/EDSSC.2011.6117748
