Reduction of magnetic noise limits of orthogonal fluxgate sensor

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Reduction of magnetic noise limits of orthogonal fluxgate sensor

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Reduction of magnetic noise limits of orthogonal fluxgate sensor

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/GA20-19686S" target="_blank" >GA20-19686S: Analýza původu šumu u senzorů typu fluxgate</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

AIP Advances

ISSN

2158-3226

e-ISSN

—

Svazek periodika

11

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

—

Kód UT WoS článku

000630450400013

EID výsledku v databázi Scopus

2-s2.0-85099930271