We present a method developed to actively compensate common-mode magnetic disturbances on a multisensor device devoted to differential measurements. The system uses a field-programmable-gated-array card, and operates in conjunction with a high-sensitivity magnetometer: compensating the common mode of magnetic disturbances results in a relevant reduction of the difference-mode noise. The digital nature of the compensation system allows for the use of a numerical approach aimed at automatically adapting the feedback-loop filter response. A common-mode-disturbance attenuation exceeding 50 dB is achieved, resulting in a final improvement of the differential noise floor by a factor of 10 over the whole spectral interval of interest.

Bevilacqua, G., Biancalana, V., Dancheva, Y., Vigilante, A. (2019). Self-adaptive loop for external-disturbance reduction in a differential measurement setup. PHYSICAL REVIEW APPLIED, 11(1) [10.1103/PhysRevApplied.11.014029].

Self-adaptive loop for external-disturbance reduction in a differential measurement setup

Bevilacqua, Giuseppe
Membro del Collaboration Group
;
Biancalana, Valerio
Membro del Collaboration Group
;
Dancheva, Yordanka
Membro del Collaboration Group
;
Vigilante, Antonio
Membro del Collaboration Group
2019-01-01

Abstract

We present a method developed to actively compensate common-mode magnetic disturbances on a multisensor device devoted to differential measurements. The system uses a field-programmable-gated-array card, and operates in conjunction with a high-sensitivity magnetometer: compensating the common mode of magnetic disturbances results in a relevant reduction of the difference-mode noise. The digital nature of the compensation system allows for the use of a numerical approach aimed at automatically adapting the feedback-loop filter response. A common-mode-disturbance attenuation exceeding 50 dB is achieved, resulting in a final improvement of the differential noise floor by a factor of 10 over the whole spectral interval of interest.
2019
Bevilacqua, G., Biancalana, V., Dancheva, Y., Vigilante, A. (2019). Self-adaptive loop for external-disturbance reduction in a differential measurement setup. PHYSICAL REVIEW APPLIED, 11(1) [10.1103/PhysRevApplied.11.014029].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/1070143