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dc.contributor.authorBae, Seok
dc.contributor.authorHong, Yang-Ki
dc.contributor.authorLee, Jaejin
dc.contributor.authorPark, Jihoon
dc.contributor.authorJalli, Jeevan
dc.contributor.authorAbo, Gavin S.
dc.contributor.authorKwon, Hyuck M.
dc.contributor.authorJayasooriya, Chandana K. K.
dc.identifier.citationBae, Seok; Hong, Yang-Ki; Lee, Jaejin; Park, Jihoon; Jalli, Jeevan; Abo, Gavin S.; Kwon, Hyuck M.; Jayasooriya, Chandana K. K. 2013. Pulsed Ferrite Magnetic Field Generator for Through-the-earth Communication Systems for Disaster Situation in Mines. Journal of Magnetics, v.18 no.1 pp.43-49en_US
dc.descriptionClick on the link to access the article at the publisher's website.en_US
dc.description.abstractA pulsed ferrite magnetic field generator (FMFG) was designed for the use in the 1000 m long through-theearth (TTE) communication system for mining disaster situations. To miniaturize the TTE system, a ferrite core having 10,000 of permeability was used for the FMFG. Attenuation of the magnetic field intensity from the FMFG (200-turn and 0.18 m diameter) was calculated to be 89.95 dB at 1000 m depth soil having 0.1 S/m of conductivity. This attenuation was lower than 151.13 dB attenuation of 1 kHz electromagnetic wave at the same conditions. Therefore, the magnetic-field was found to be desirable as a signal carrier source for TTE communications as compared to the electromagnetic wave. The designed FMFG generates the magnetic field intensity of 1 × 10−10 Tesla at 1000 m depth. This magnetic field is detectable by compact magnetic sensors such as flux gate or magnetic tunneling junction sensor. Therefore, the miniature FMFG TTE communication system can replace the conventional electromagnetic wave carrier type TTE system and allow reliable signal transmission between rescuer and trapped miners.en_US
dc.publisherKorean Magnetics Societyen_US
dc.relation.ispartofseriesJournal of Magnetics;v.18 no.1
dc.subjectFerrite helical loop antennaen_US
dc.subjectThrough-the-earth (TTE) communicationen_US
dc.subjectFerrite magnetic field generator (FMFG)en_US
dc.subjectDisaster in mineen_US
dc.titlePulsed ferrite magnetic field generator for through-the-earth communication systems for disaster situation in minesen_US
dc.description.versionPeer revieweden_us
dc.rights.holder©The Korean Magnetics Society. All rights reserved.en

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