Title :
Integrated solutions to decrease micro-fluxgate sensors noise
Author :
Joisten, H. ; Guilhamat, B. ; Audoin, M. ; Cuchet, R. ; Léger, J.M. ; Desloges, B. ; Gaud, P.
Author_Institution :
CEA-Grenoble LETI, Grenoble, France
fDate :
7/1/2004 12:00:00 AM
Abstract :
Microfluxgate sensors are intended for the measurement of the very small variations of the earth magnetic field. Our sensors would present an output signal with a basic noise of about 1 nanotesla (nT)/√Hz, if an additional noise in the form of instabilities didn´t regularly occur, increasing the output noise by regular jumps of 100 nT in the output signal. Some solutions are presented here to reduce and finally to suppress this problematic noise.
Keywords :
fluxgate magnetometers; magnetic noise; magnetic sensors; magnetic thin films; earth magnetic field variation; magnetic noise; magnetic sensor; magnetic thin film; microfluxgate sensors noise; Coils; Low-frequency noise; Magnetic cores; Magnetic domains; Magnetic field measurement; Magnetic materials; Magnetic noise; Magnetic sensors; Magnetic separation; Saturation magnetization; Magnetic noise; magnetic sensor; magnetic thin film; noise;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.832482
