Results 171 to 180 of about 2,196 (202)
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Applications of the DG-FDTD method
2nd European Conference on Antennas and Propagation (EuCAP 2007), 2007In this paper, we propose to use the dual-grid finite-difference time-domain (DG-FDTD) approach to analyze the characteristics of several antenna configurations. This method reduces the overall computational time and besides, it prevents from instabilities.
Godi, Gaël +7 more
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Stability analysis of the PML scheme for CN‐FDTD and ADI‐FDTD
Microwave and Optical Technology Letters, 2014ABSTRACTThe alternating direction implicit‐finite‐difference time‐domain (ADI‐FDTD) method can be seen as a second‐order perturbation of the Crank–Nicolson FDTD (CN‐FDTD) scheme. When the PML is introduced for the ADI‐FDTD method, the perturbation term will affect the stability of the ADI‐FDTD method.
Fu-Chiarng Chen, Jiunn Nan Hwang
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2016
The FDTD method has gained tremendous popularity in the past decade as a tool for solving Maxwell's equations. It is based on simple formulations that do not require complex asymptotic or Green's functions. Although it solves the problem in time, it can provide frequency-domain responses over a wide band using the Fourier transform.
Veysel Demir, Atef Z. Elsherbeni
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The FDTD method has gained tremendous popularity in the past decade as a tool for solving Maxwell's equations. It is based on simple formulations that do not require complex asymptotic or Green's functions. Although it solves the problem in time, it can provide frequency-domain responses over a wide band using the Fourier transform.
Veysel Demir, Atef Z. Elsherbeni
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Comparison of FT-FDTD and Spectral Domain FDTD for Periodic Structures
2008 International Workshop on Antenna Technology: Small Antennas and Novel Metamaterials, 2008In recent years, the metamaterials and its applications to antenna and other fields have been widely investigated theoretically and experimentally. The metamaterials are usually realized by some periodic structures composed of a conductor and/or dielectric/magnetic materials.
Toru Uno, Takuji Arima, K. Toyoda
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IEEE Antennas and Propagation Society International Symposium. 1995 Digest, 2002
Late time growth is a serious defect of the time domain electromagnetic numerical methods. It has been reported in some conformal FDTD numerical codes; and it is also observed in our FDTD/FVTD hybrid numerical code. The paper is devoted to investigations leading to a stabilizing technique to eliminate the late time growth in our FDTD/FDTD or FDTD/FVTD ...
K.S. Yee, J.S. Chen, A.H. Chang
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Late time growth is a serious defect of the time domain electromagnetic numerical methods. It has been reported in some conformal FDTD numerical codes; and it is also observed in our FDTD/FVTD hybrid numerical code. The paper is devoted to investigations leading to a stabilizing technique to eliminate the late time growth in our FDTD/FDTD or FDTD/FVTD ...
K.S. Yee, J.S. Chen, A.H. Chang
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On the numerical properties of the ADI-FDTD and CNSS-FDTD method
Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521), 2004The formula for the stability and numerical dispersion of the "alternating directions implicit" (ADI), finite-difference time domain (FDTD) and for the "Crank-Nicolson slit step" (CNSS) FDTD method are obtained and their properties are discussed.
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Comparison between HIE‐FDTD method and ADI‐FDTD method
Microwave and Optical Technology Letters, 2007AbstractThis letter gives the comparison of the 3D hybrid implicit–explicit finite‐difference time‐domain (HIE‐FDTD) method with the ADI‐FDTD method through numerical examples. It shows that the HIE‐FDTD method has higher accuracy than the ADI‐FDTD method, especially for larger rate of field variation; the time step size, which has a detrimental effect
Jianguo Wang, Juan Chen
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Spatial subgridding in FDTD [PDF]
The European Physical Journal Applied Physics, 1998 In the traditional finite difference time domain (FDTD) method, the studied structure is modeled as elementary cells, which sizes have to be small enough to get close to the reality. Then, this discretization is applied to the whole calculation volume, even though some zones do not need such fine discretization. Consequently, this numerical
Bernard Jecko +4 more
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Research on Hybrid Algorithm of Explicit Newmark-FDTD and Traditional FDTD Methods
2021 International Applied Computational Electromagnetics Society (ACES-China) Symposium, 2021The Newmark method is used to discretize the subgridding numerical system, and explicit Newmark-FDTD method is obtained by employing the Neumann series to expand the inverse of the coefficient matrix. Furthermore, the hybrid algorithm of explicit Newmark-FDTD and traditional FDTD methods is employed to further improve the computational efficiency.
Bing Wei, Kaihang Fan, Xinbo He
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A New Subgridding Scheme for Two-Dimensional FDTD and FDTD
IEEE Transactions on Magnetics, 2004While the available finite-difference time-domain (FDTD) subgridding schemes can improve the solution accuracy over those of the traditional FDTD, it is known to have instability problems. A new subgridding scheme combining FDTD or FDTD(2,4) method with FD-Laplacian interpolation is proposed.
S.-H. Sun +3 more
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