Publication: Magnetic sensor design for femtotesla low-frequency signals
Program
KU-Authors
KU Authors
Co-Authors
Harriman, Sarah K.
Paschal, Evans W.
Publication Date
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Type
Embargo Status
Journal Title
Journal ISSN
Volume Title
Alternative Title
Abstract
A system for detecting magnetic fields in the femtotesla range at low frequencies is developed, including the antenna, transformer, and amplifier. Each component is described with relevant tradeoffs which allow a large variety of receivers to be easily designed for any magnetic field sensing in the very low frequency range. A system using a 1-Ω–1-mH impedance antenna is developed further as an example that has been used extensively in measurements all over the world in the frequency range of 50 Hz–30 kHz. It has a gain of 0.58 V/nT and a sensitivity of below 1 fT/Hz1/2 above 250 H
Source
Publisher
IEEE-Inst Electrical Electronics Engineers Inc
Subject
Geochemistry and geophysics, Engineering, Electrical and electronic engineering, Remote Sensing, Imaging science and photographic technology
Citation
Has Part
Source
IEEE Transactions on Geoscience and Remote Sensing
Book Series Title
Edition
DOI
10.1109/TGRS.2009.2027694