Title :
High frequency fluxgate sensor noise
Author :
Primdahl ; Nielsen, O.V. ; Petersen, J.R. ; Ripka, Pavel
Author_Institution :
Dept. of Electrophys., Tech. Univ. Denmark, Lyngby
fDate :
3/17/1994 12:00:00 AM
Abstract :
AC magnetic fields up to 3 kHz can be measured directly using a modified high frequency fluxgate magnetometer. The amorphous metal ring core sensor was excited at 15 kHz and in short circuited output mode has a -3 dB bandwidth of at least 2 kHz. The total RMS noise level is 93 pT (64 mHz to 3 kHz), and the noise power density decreases as 1/f over the entire frequency band
Keywords :
electron device noise; magnetic cores; magnetic field measurement; magnetometers; random noise; -3 dB bandwidth; 1/f noise; 2 kHz; 64 mHz to 3 kHz; AC magnetic field measurement; RMS noise level; amorphous metal ring core sensor; frequency characteristics; high frequency fluxgate magnetometer; high frequency fluxgate sensor noise; noise power density; short circuited output mode;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19940361
