Academic Journal
Reduction of magnetic noise limits of orthogonal fluxgate sensor
| العنوان: | Reduction of magnetic noise limits of orthogonal fluxgate sensor |
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| المؤلفون: | Dressler, Michal, Janosek, Michal, Butta, Mattia |
| المساهمون: | Czech Science Foundation, CTU Student Grant Competition |
| المصدر: | AIP Advances ; volume 11, issue 1 ; ISSN 2158-3226 |
| بيانات النشر: | AIP Publishing |
| سنة النشر: | 2021 |
| الوصف: | We have further lowered the white noise of an orthogonal fluxgate to about 0.3 pT/√Hz @ 8 Hz. So far, this is the lowest noise reported for a fluxgate magnetometer. The noise reduction was achieved by introducing a JFET input stage, embedded directly to the sensor head, allowing for high common-mode rejection and negligible loading of the resonant circuit. The origin of the noise was investigated by correlation measurements and we concluded that, at least in the white noise region, we observe the magnetic noise of the sensor, with about 0.1 pT/√Hz white noise contribution by the electronics. We were finally able to obtain sensor noise floor below 1 pT/√Hz @ 1 Hz also in a feedback-compensated closed-loop. Closed-loop operation allows for higher magnetometer stability and operation in Earth’s magnetic field without deteriorating its noise performance. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1063/9.0000231 |
| DOI: | 10.1063/9.0000231/12846179/015347_1_online.pdf |
| الاتاحة: | http://dx.doi.org/10.1063/9.0000231 https://pubs.aip.org/aip/adv/article-pdf/doi/10.1063/9.0000231/12846179/015347_1_online.pdf |
| رقم الانضمام: | edsbas.DFD4F85F |
| قاعدة البيانات: | BASE |
| DOI: | 10.1063/9.0000231 |
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