We report on the realization and characterization of a high performance, compact magnetometer based on a magnetoresistive sensor and working in the range ±600 uT. The output is provided both numerically and by means of a field-proportional voltage. Spurious offset effects are suppressed by flipping the film magnetization at a frequency of 100 kHz, 2 / 3 orders of magnitude higher than in conventional applications. The design allows for a field resolution of 20 nT, low output noise density, and high precision and accuracy \u0351relative full-scale uncertainty of about 500 ppm.
Magnetoresistive magnetometer with improved bandwidth and response characteristics
Bassi, Davide;Ricci, Leonardo;
2005-01-01
Abstract
We report on the realization and characterization of a high performance, compact magnetometer based on a magnetoresistive sensor and working in the range ±600 uT. The output is provided both numerically and by means of a field-proportional voltage. Spurious offset effects are suppressed by flipping the film magnetization at a frequency of 100 kHz, 2 / 3 orders of magnitude higher than in conventional applications. The design allows for a field resolution of 20 nT, low output noise density, and high precision and accuracy \u0351relative full-scale uncertainty of about 500 ppm.File in questo prodotto:
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