Results 211 to 220 of about 30,411 (268)

A New Multiresolution FDTD Approach Based on the Hybridization of MR-FDTD and DG-FDTD Methods

2007 IEEE/MTT-S International Microwave Symposium, 2007
In this paper, a new multiresolution approach based on the hybridization of the well-known multiple-region FDTD (MR-FDTD) and the new dual-grid FDTD (DG-FDTD) is applied to simulate the transmission between two ultra wide-band (UWB) antennas. The good results for the S parameters as well as the large gain on computational time makes the hybrid MR-FDTD /
Pascaud, Romain, Gillard, Raphaël, Loison, Renaud, Wiart, Joe, Wong, Man-Faï   +4 more
openaire   +2 more sources

Multigrid FDTD with Chombo

Computer Physics Communications, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zdzislaw Meglicki, Stephen K. Gray, Boyana Norris   +2 more
openaire   +3 more sources

A new FDTD algorithm - ADI/R-FDTD

2002 3rd International Symposium on Electromagnetic Compatibility, 2003
Making use of the two modified finite-difference time-domain (FDTD) methods, that is, ADI-FDTD and R-FDTD, we propose a new time domain method in this paper. The method is established from Maxwell curl and divergence equations. It inherits the advantages of both former methods, i.e., not only eliminating the restraint of the Courant-Friedrich-Levy (C-F-
null Liu Bo, null Gao Benqing, null Tan Wei, null Ren Wu   +3 more
openaire   +1 more source

FDTD in curvilinear coordinates using a rectangular FDTD formulation

2011 IEEE International Symposium on Antennas and Propagation (APSURSI), 2011
In the simplest formulation, the FDTD algorithm requires that objects follow the rectangular grid. For curved surfaces, this is a severe limitation. In this paper, an approach to modify an existing rectangular FDTD code to model structures more naturally described in another coordinate system is demonstrated.
R. T. Lee, J. G. Maloney, B. N. Baker, D. W. Landgren   +3 more
openaire   +1 more source

Comparison between HIE-FDTD method and ADI-FDTD method

Microwave and Optical Technology Letters, 2007
AbstractThis 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
exaly   +2 more sources

A hybrid FDTD and leapfrog ADI-FDTD method with PML implementation

2011 IEEE MTT-S International Microwave Symposium, 2011
In this paper, a hybrid FDTD and leapfrog alternating-direction-implicit finite-difference time-domain (ADI-FDTD) method is presented. The perfectly matched layer (PML) absorbing boundary conditions are also incorporated in the method and non-uniform grids are deployed to efficiently model electromagnetic radiation and scattering in open domains.
F. Jolani, Y. Yu, Z. D. Chen
openaire   +1 more source

Research on Hybrid Algorithm of Explicit Newmark-FDTD and Traditional FDTD Methods

2021 International Applied Computational Electromagnetics Society (ACES-China) Symposium, 2021
The 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.
Xinbo He, Bing Wei, Kaihang Fan
openaire   +1 more source

FDTD Analysis of EBG Superstrates

2007 Workshop on Computational Electromagnetics in Time-Domain, 2007
AbstractRadiating devices, made up by woodpile electromagnetic bandgap (EBG) material superstrates placed over microstrip patches, are taken in consideration. Much interest is devoted to such antennas because of their enhanced directivity. The radiated far‐field has been calculated using an in‐house finite‐difference time‐domain (FDTD) code.
FREZZA, Fabrizio, NOCITO, PAOLO, PAJEWSKI, Lara, G. Schettini   +3 more
openaire   +6 more sources

Multiresolution fdtd with switchable grid

2006 First European Conference on Antennas and Propagation, 2006
A new multiresolution approach for the FDTD is proposed and applied to an ultra wide-band (UWB) problem. The multiresolution FDTD with switchable grid (SWG-FDTD) splits the simulation along the time into two FDTD schemes with different mesh densities.
Pascaud, Romain, Gillard, Raphaël, Loison, Renaud, Wiart, Joe, Wong, Man-Faï   +4 more
openaire   +2 more sources

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2010
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openaire   +2 more sources