Results 261 to 270 of about 64,191 (298)

Accuracy improved ADI‐FDTD methods

International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, 2006
AbstractFDTD method plays an important role for simulation of different structures in various fields of engineering, such as RF/microwaves, photonics and VLSI. However, due to the CFL stability constraint, the FDTD time step is still small and the related CPU time is still large for modelling fine geometry where small cell sizes are required to resolve
Ahmed, Iftikhar, Chen, Zhizhang (David)
openaire   +2 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

Analysis of surrounded antennas: from DG-FDTD to DG-FDTD/IPO

2014 IEEE Conference on Antenna Measurements & Applications (CAMA), 2014
The paper first discusses the numerical capabilities of the DG-FDTD method. An analytical formulation is proposed to assess the size of the largest possible computational volume. Then, a recently proposed hybrid method, called DG-FDTD/IPO, which extends the DG-FDTD application is presented.
Le Lepvrier, Benoît, Loison, Renaud, Gillard, Raphaël, Potier, Patrick, Pouliguen, Philippe   +4 more
openaire   +3 more sources

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

Numerical experiments on PEC boundary condition and late time growth involving the FDTD/FDTD and FDTD/FVTD hybrid

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
openaire   +1 more source

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2010
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openaire   +2 more sources

Implementation of ADI-FDTD subgrids in ground penetrating radar FDTD models

Journal of Applied Geophysics, 2009
Abstract Realistic numerical modeling of ground penetrating radar (GPR) using the finite-difference time-domain (FDTD) method could greatly benefit from the implementation of subgrids – supporting finer spatial resolution – into the conventional FDTD mesh.
Nectaria Diamanti, Antonios Giannopoulos
openaire   +1 more source

Application of system identification technique to FDTD and FDTD Diakoptics method

23rd European Microwave Conference, 1993, 1993
The system identification technique is applied to the FDTD Diakopties method. The computational time and computer storage are significantly reduced. This technique is successfully used in the FDTD Diakoptics simulation of active microwave circuits.
Tian-Wei Huang, Bijgan Houshmand, Tatsuo Itoh   +2 more
openaire   +1 more source

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