Newmark-FDTD Formulation for Modified Lorentz Dispersive Medium and Its Equivalence to Auxiliary Differential Equation-FDTD with Bilinear Transformation
Joint Authors
Park, Yong Bae
Choi, Hongjin
Cho, Jeahoon
Jung, Kyung-Young
Source
International Journal of Antennas and Propagation
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-06-20
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
The finite-difference time-domain (FDTD) method has been popularly utilized to analyze the electromagnetic (EM) wave propagation in dispersive media.
Various dispersion models were introduced to consider the frequency-dependent permittivity, including Debye, Drude, Lorentz, quadratic complex rational function, complex-conjugate pole-residue, and critical point models.
The Newmark-FDTD method was recently proposed for the EM analysis of dispersive media and it was shown that the proposed Newmark-FDTD method can give higher stability and better accuracy compared to the conventional auxiliary differential equation- (ADE-) FDTD method.
In this work, we extend the Newmark-FDTD method to modified Lorentz medium, which can simply unify aforementioned dispersion models.
Moreover, it is found that the ADE-FDTD formulation based on the bilinear transformation is exactly the same as the Newmark-FDTD formulation which can have higher stability and better accuracy compared to the conventional ADE-FDTD.
Numerical stability, numerical permittivity, and numerical examples are employed to validate our work.
American Psychological Association (APA)
Choi, Hongjin& Cho, Jeahoon& Park, Yong Bae& Jung, Kyung-Young. 2019. Newmark-FDTD Formulation for Modified Lorentz Dispersive Medium and Its Equivalence to Auxiliary Differential Equation-FDTD with Bilinear Transformation. International Journal of Antennas and Propagation،Vol. 2019, no. 2019, pp.1-7.
https://search.emarefa.net/detail/BIM-1157398
Modern Language Association (MLA)
Choi, Hongjin…[et al.]. Newmark-FDTD Formulation for Modified Lorentz Dispersive Medium and Its Equivalence to Auxiliary Differential Equation-FDTD with Bilinear Transformation. International Journal of Antennas and Propagation No. 2019 (2019), pp.1-7.
https://search.emarefa.net/detail/BIM-1157398
American Medical Association (AMA)
Choi, Hongjin& Cho, Jeahoon& Park, Yong Bae& Jung, Kyung-Young. Newmark-FDTD Formulation for Modified Lorentz Dispersive Medium and Its Equivalence to Auxiliary Differential Equation-FDTD with Bilinear Transformation. International Journal of Antennas and Propagation. 2019. Vol. 2019, no. 2019, pp.1-7.
https://search.emarefa.net/detail/BIM-1157398
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1157398