Computation of Fields from a Magnetic Dipole in a Conductive Medium Using the QS-DGTD Method

M. Burak Özakin, Liang Chen, Shehab Ahmed, Hakan Bagci

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


Loop antennas are often used for field generation in low-frequency electromagnetic applications. Since the antenna dimensions are much smaller than the wavelength, the antenna can accurately be replaced by its equivalent magnetic dipole model in simulations. In this paper, low-frequency magnetic dipole radiation fields in a conductive medium are computed using a three-dimensional discontinuous Galerkin Time-Domain (DGTD) scheme. It is shown that this computation can be accelerated using a material scaling scheme under Quasi-Static (QS) approximation, i.e., time step size can be scaled up without sacrificing from the accuracy and the stability of the time marching scheme. Radiated fields from a magnetic dipole in a conductive medium computed by this accelerated scheme are compared to those obtained using analytical expressions. Results are in good agreement.
Original languageEnglish (US)
Title of host publication2019 International Applied Computational Electromagnetics Society Symposium (ACES)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
StatePublished - May 13 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): 2016-CRG5-2953
Acknowledgements: This publication is based upon work partially supported by the King Abdullah University of Science and Technology
(KAUST) Office of Sponsored Research (OSR) under Award No: 2016-CRG5-2953.


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