Results 101 to 110 of about 744 (154)

Dispersion-Error Optimized ADI FDTD

2006 IEEE MTT-S International Microwave Symposium Digest, 2006
ADI-FDTD method is efficient in solving fine RF/microwave structures due to its unconditionally stable characteristics. However, it suffers from large dispersions with the increase of time steps. In this paper, an error-minimized ADI-FDTD method is proposed that is less dispersive as compared to the conventional ADI-FDTD method.
Iftikhar Ahmed, Zhizhang Chen
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Symmetric source implementation for ADI-FDTD

IEEE Antennas and Propagation Society Symposium, 2004., 2004
The alternating-direction-implicit finite-difference time-domain (ADI-FDTD) method is attractive for simulations involving highly refined grids due to its unconditional stability (Namiki, T. 2000; Zheng, F. et al., 2000; Darms, M. et al., 2002). It has been recently reported that the ADI-FDTD method may lead to asymmetrical results in the field ...
B. Donderici, F.L. Teixeira
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Large scale ADI-FDTD parallel computations

2008 Asia-Pacific Microwave Conference, 2008
We present performance benchmark results for a parallel alternating direction implicit finite difference time domain (ADI-FDTD) solver with convolution perfectly matched layer boundary conditions on a high performance computer cluster using a message passing interface library.
T.P. Stefanski, T.D. Drysdale
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A parameter optimized ADI-FDTD method

IEEE Antennas and Wireless Propagation Letters, 2003
We present a parameter optimized alternating-direction implicit (ADI)-finite-difference time-domain (FDTD) method. This parameter optimized ADI-FDTD algorithm can minimize the dispersion error for arbitrary incident angles and for different time-step sizes.
null Muhu Wang, null Zhu Wang, null Ji Chen   +2 more
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ADI-FDTD Method for Transformed Maxwell's Equations

The 2006 4th Asia-Pacific Conference on Environmental Electromagnetics, 2006
The Crank-Nicolson method is applied to the field transformed Maxwell's equations to derive an ADI FDTD scheme. The proposed method significantly reduces the limitation on time step size and the computational domain to only one period of the structure. Using the von Neumann technique, the numerical stability of the proposed method was studied.
null Chunming Tian, W.Y. Tam
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On the dispersion relation of ADI-FDTD

IEEE Microwave and Wireless Components Letters, 2006
In this letter, we analyze the alternating direction implicit finite-difference time-domain (ADI-FDTD) dispersion relation and find the numerical plane-wave relationship between the magnetic and electric fields, showing that the scheme is not divergence-free.
S.G. Garcia, R.G. Rubio, A.R. Bretones, R.G. Martin   +3 more
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The complex envelope (CE) ADI-FDTD method

IEEE MTT-S International Microwave Symposium Digest, 2005., 2005
To efficiently simulate modulated electromagnetic fields, the complex envelope (CE) concept has been adapted into the FDTD method. However, such formulated CE FDTD has been found inferior to the conventional FDTD method and of little practical values due to the CFL stability condition.
null Changning Ma, null Zhizhang Chen
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PLJERC-ADI-FDTD method for isotropic plasma

IEEE Microwave and Wireless Components Letters, 2005
The unconditionally stable alternating-direction-implicit-finite-difference-time-domain (ADI-FDTD) method is extended to dispersive media-isotropic plasma based on the piecewise linear JE recursive convolution (PLJERC) method. Two-dimensional ADI-FDTD formulations for isotropic plasma are derived.
null Lijun Xu, null Naichang Yuan
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An ADI-FDTD Algorithm in Curvilinear Coordinates

2005 Asia-Pacific Microwave Conference Proceedings, 2006
The alternating direction implicit scheme (ADI) has been successfully applied to finite-difference time-domain (FDTD) method to achieve an unconditionally stable algorithm. In this paper the ADI-FDTD method is extended to a conformal FDTD scheme in curvilinear coordinates. The effectiveness and accuracy of the proposed ADI-NFDTD is demonstrated.
W. Song, Y. Hao, C.G. Parini
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3-D Higher-Order ADI-FDTD Method

2007 Asia-Pacific Microwave Conference, 2007
In this paper, attention was focused on the 3-D higher- order alternating-direction implicit finite-difference time-domain (ADI-FDTD) method using the higher-order spatial difference. Firstly, the numerical formulation is presented. Secondly, the numerical dispersion relation is obtained analytically.
Yan Zhang, Shan-wei Lu, Jun Zhang, Ming-hua Xue   +3 more
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