Low-frequency noise characterization of a magnetic field monitoring system using an anisotropic magnetoresistance
Visualitza/Obre
Cita com:
hdl:2117/83852
Tipus de documentArticle
Data publicació2015-11-01
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
:
Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
A detailed study about magnetic sensing techniques based on anisotropic magnetoresistive sensors shows that the technology is suitable for low-frequency space applications like the eLISA mission. Low noise magnetic measurements at the sub-millihertz frequencies were taken by using different electronic noise reduction techniques in the signal conditioning circuit. We found that conventional modulation techniques reversing the sensor bridge excitation do not reduce the potential 1/f noise of the magnetoresistors, so alternative methods such as flipping and electro-magnetic feedback are necessary. In addition, a low-frequency noise analysis of the signal conditioning circuits has been performed in order to identify and minimize the different main contributions from the overall noise. The results for chip-scale magnetoresistances exhibit similar noise along the eLISA bandwidth (0.1 mHz - 1 Hz) to the noise measured by means of the voluminous fluxgate magnetometers used in its precursor mission, known as LISA Pathfinder.
CitacióMateos, I., Ramos, J., Lobo, J.A. Low-frequency noise characterization of a magnetic field monitoring system using an anisotropic magnetoresistance. "Sensors and actuators A. Physical", 01 Novembre 2015, vol. 235, p. 57-63.
ISSN0924-4247
Versió de l'editorhttp://www.sciencedirect.com/science/article/pii/S0924424715301382
Col·leccions
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
PaperAMReLISA_postprint.pdf | 795,5Kb | Visualitza/Obre |