Results 71 to 80 of about 107 (102)

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

An ADI-FDTD method for periodic structures

IEEE Transactions on Antennas and Propagation, 2005
In this communication, the alternating-direction implicit finite-difference time-domain (ADI-FDTD) method is extended to analyze periodic structures. In the implicit updates of the ADI-FDTD method, the periodic boundary condition leads to a cyclic matrix.
null Shumin Wang, null Ji Chen, P. Ruchhoeft   +2 more
openaire   +1 more source

Parallel implementation of the ADI‐FDTD method

Microwave and Optical Technology Letters, 2009
AbstractWe present a parallel implementation of the three‐dimensional alternating direction implicit finite‐difference time‐domain (ADI‐FDTD) method in Cartesian coordinates using the message passing interface (MPI) library. Parallel implementations not only speed up computations but also increase the maximum solvable problem size.
T. Stefański, T. D. Drysdale
openaire   +1 more source

A compact higher‐order ADI‐FDTD method

Microwave and Optical Technology Letters, 2004
AbstractA 2D higher‐order alternating‐direction‐implicit (ADI) finite‐difference time‐domain method based on a compact scheme is presented in this paper. This compact ADI method improves the efficiency of computation by reducing the bandwidth of the matrix to be inversed from seven to five for the 4th‐order scheme.
Weiming Fu, Eng Leong Tan
openaire   +1 more source

Error-Optimized ADE-ADI FDTD for Plasma

IEEE Antennas and Wireless Propagation Letters, 2016
An error-optimized auxiliary differential equation–alternating direction implicit (ADE-ADI) finite-difference time domain (FDTD) method for isotropic nonmagnetized plasma is proposed based on the ADE technique. The error-optimized technique based on the Crank–Nicolson scheme is more tractable than the previous published methods. The iteration method is
Song Wanjun, Zhang Hou
openaire   +1 more source

Dispersion and asymmetry effects of ADI-FDTD

IEEE Microwave and Wireless Components Letters, 2002
In this paper, a generalized derivation of the alternating direction implicit finite-difference time-domain algorithm based on operator splitting is proposed. The formulation follows the notation of the finite integration technique. A straightforward proof of stability is given and the numerical dispersion formula is presented and verified by numerical
M. Darms, R. Schuhmann, H. Spachmann, T. Weiland   +3 more
openaire   +1 more source

Optimization of CFS-PML Parameters for FD-ADI-FDTD

2006 IEEE Antennas and Propagation Society International Symposium, 2006
The frequency dependent alternating direction-implicit finite difference time domain (FD-ADI-FDTD) method is designed to handle FD materials and there is to date no study of the influence of FD materials on the complex frequency-shifted perfectly matched layer (CFS-PML) parameters.
Thiry, Arnaud, Costen, Fumie, Brown, Anthony   +2 more
openaire   +1 more source