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Open AccessFeature PaperArticle

Design and Implementation of a Test Fixture for ELF Schumann Resonance Magnetic Antenna Receiver and Magnetic Permeability Measurements

1
Electronics-Telecommunications and Applications Laboratory, Physics Department, University of Ioannina, 45110 Ioannina, Greece
2
Department of Electronic Physics and Systems, Faculty of Physics, National and Kapodistrian University of Athens, 15784 Athens, Greece
3
Mariolopoulos-Kanaginis Foundation for the Environmental Sciences, 10675 Athens, Greece
4
Research Center for Astronomy and Applied Mathematics, Academy of Athens, 11527 Athens, Greece
*
Authors to whom correspondence should be addressed.
Electronics 2020, 9(1), 171; https://doi.org/10.3390/electronics9010171 (registering DOI)
Received: 23 November 2019 / Revised: 8 January 2020 / Accepted: 13 January 2020 / Published: 16 January 2020
(This article belongs to the Section Circuit and Signal Processing)
This paper presents a prototype test fixture for the absolute calibration and estimation of the equivalent magnetic flux noise of the extremely low frequency (ELF) Schumann resonant (SR) magnetic antenna receiver and rods’ magnetic permeability measurement. The test fixture, for ELF the SR detector’s calibration, consists of a constructed coil, the signal generator, and the oscilloscope. The ELF SR detector used has been operating since 2016 near the Doliana village in the Ioannina prefecture, Northwestern Greece. At precisely this spot, far away from electromagnetic noise, the whole setup and experiment took place. The experiments performed with the proposed test fixture showed a sensitivity of 70 nV/pT/Hz and an apparent magnetic permeability at around 250 for the magnetic antenna. The total sensitivity of the ELF receiver was 210 mV/pT near 20 Hz, while the total input noise was around 0.04 pT. View Full-Text
Keywords: ELF test fixture; measurements; calibration; ELF Schumann resonance detector; magnetic antenna ELF test fixture; measurements; calibration; ELF Schumann resonance detector; magnetic antenna
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MDPI and ACS Style

Tatsis, G.; Christofilakis, V.; Chronopoulos, S.K.; Kostarakis, P.; Nistazakis, H.E.; Repapis, C.; Tritakis, V. Design and Implementation of a Test Fixture for ELF Schumann Resonance Magnetic Antenna Receiver and Magnetic Permeability Measurements. Electronics 2020, 9, 171.

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