A Hybrid approach for efficient modeling of medium-frequency propagation in coal mines

Donovan E. Brocker, Peter E. Sieber, Joseph A. Waynert, Jingcheng Li, Pingjuan L. Werner, Douglas H. Werner

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Abstract

An efficient procedure for modeling medium frequency (MF) communications in coal mines is introduced. In particular, a hybrid approach is formulated and demonstrated utilizing ideal transmission line equations to model MF propagation in combination with full-wave sections used for accurate simulation of local antenna-line coupling and other near-field effects. This work confirms that the hybrid method accurately models signal propagation from a source to a load for various system geometries and material compositions, while significantly reducing computation time. With such dramatic improvement to solution times, it becomes feasible to perform large-scale optimizations with the primary motivation of improving communications in coal mines both for daily operations and emergency response. Furthermore, it is demonstrated that the hybrid approach is suitable for modeling and optimizing large communication networks in coal mines that may otherwise be intractable to simulate using traditional full-wave techniques such as moment methods or finite-element analysis.

Original languageEnglish (US)
Article number7056419
Pages (from-to)164-176
Number of pages13
JournalIEEE Antennas and Propagation Magazine
Volume57
Issue number1
DOIs
StatePublished - Feb 1 2015

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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