Publication: Magnetic sensor design for femtotesla low-frequency signals
Program
KU-Authors
KU Authors
Co-Authors
Harriman, Sarah K.
Paschal, Evans W.
Advisor
Publication Date
Language
English
Type
Journal Title
Journal ISSN
Volume 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:
IEEE Transactions on Geoscience and Remote Sensing
Publisher:
IEEE-Inst Electrical Electronics Engineers Inc
Keywords:
Subject
Geochemistry and geophysics, Engineering, Electrical and electronic engineering, Remote Sensing, Imaging science and photographic technology