Reduction of magnetic noise limits of orthogonal fluxgate sensor
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F21%3A00346557" target="_blank" >RIV/68407700:21230/21:00346557 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1063/9.0000231" target="_blank" >https://doi.org/10.1063/9.0000231</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/9.0000231" target="_blank" >10.1063/9.0000231</a>
Alternative languages
Result language
angličtina
Original language name
Reduction of magnetic noise limits of orthogonal fluxgate sensor
Original language description
We have further lowered the white noise of an orthogonal fluxgate to about 0.3 pT/root 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/root Hz white noise contribution by the electronics. We were finally able to obtain sensor noise floor below 1 pT/root 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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
<a href="/en/project/GA20-19686S" target="_blank" >GA20-19686S: To the origin of the fluxgate noise</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
AIP Advances
ISSN
2158-3226
e-ISSN
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Volume of the periodical
11
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
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UT code for WoS article
000630450400013
EID of the result in the Scopus database
2-s2.0-85099930271