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Time-Domain Finite-Element Method for Near-Field Applications With Magnetic Metamaterials.
- Source :
-
IEEE Transactions on Magnetics . Jun2021, Vol. 57 Issue 6, p1-5. 5p. - Publication Year :
- 2021
-
Abstract
- Magnetic metamaterials exhibit extraordinary electromagnetic properties and have shown great potential in low-frequency near-field electromagnetic applications. A near-field device or system is consisted of different natural media and low-frequency metamaterials, and it is essential to develop a numerical methodology to compute the transient response of such a device or system. However, most existing works are dedicated to high-frequency metamaterials and wave propagation problems, whereas the study of numerical methodology for low-frequency metamaterials in magnetoquasistatic (MQS) fields is still blank and challenging. In this regard, a time-domain finite-element method (TDFEM) is first derived for MQS field applications of low-frequency metamaterials. The metamaterials are modeled as continuous media and approximated by a nonstandard Lorentz dispersion equation. The formulas to handle dispersive media in near field are derived based on the auxiliary equation method. The proposed method is validated in a 2-D axisymmetric case study by comparing its results with those of frequency-domain computations. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189464
- Volume :
- 57
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Magnetics
- Publication Type :
- Academic Journal
- Accession number :
- 150448623
- Full Text :
- https://doi.org/10.1109/TMAG.2021.3066493