PCB technology used in fluxgate sensor construction

In this work, printed circuit board (PCB)-integrated inductors have been adapted for operation as fluxgate sensors. The ring core is made from electrodeposited permalloy sandwiched between the layers of the PCB. The sensor excitation winding is also integrated into the PCB design. The pick-up coil i...

Full description

Saved in:
Bibliographic Details
Published in:Sensors and actuators. A. Physical. 2004-09, Vol.115 (2), p.286-292
Main Authors: Tipek, A., Ripka, P., O’Donnell, Terence, Kubik, J.
Format: Article
Language:English
Subjects:
Fluxgate sensor
PCB technology
Testing
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this work, printed circuit board (PCB)-integrated inductors have been adapted for operation as fluxgate sensors. The ring core is made from electrodeposited permalloy sandwiched between the layers of the PCB. The sensor excitation winding is also integrated into the PCB design. The pick-up coil is wound around the frame with the PCB core. The sensor characteristics as a function of the excitation frequency are described. The sensitivity achieved was 1800 and 13100 V/T at 150 kHz for 60 turns of untuned and tuned pick-up coil, respectively. We observed that tuning causes degradation of the open-loop linearity from 0.3 to 3%. The noise power density was 200 pT/Hz 0.5@1 Hz and the noise rms level was 0.3 nT in the frequency range of 10 mHz–10 Hz.
ISSN:0924-4247
1873-3069
DOI:10.1016/j.sna.2004.03.061