Results 211 to 220 of about 21,815 (267)

Antenna Q-factor computation with FDTD method

11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005], 2005
In this work, we have developed a new method for the calculation of the antenna quality factor by using the numerical method FDTD. The results obtained with our method are compared with the analytical approach of McLean and Geyi. The results show good agreement between FDTD and Geyi formulation.
Collardey, Sylvain, Sharaiha, Ala, Mahdjoubi, Kouroch   +2 more
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Cavity Losses Modeling Using Lossless FDTD Method

IEEE Transactions on Electromagnetic Compatibility, 2006
The impulse response of a lossless resonant system, usually obtained using the finite-difference time-domain method, permits us to determine the resonant frequencies through the Fourier transform. However, the obtained spectrum has no physical meaning since the losses have not been implemented.
Orjubin, G, Petit, F, Richalot, Elodie, Mengue, S, Picon, O   +4 more
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Overlapping Yee FDTD Method on Nonorthogonal Grids

Journal of Scientific Computing, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Liu, Jinjie, Brio, Moysey, Moloney, Jerome V.   +2 more
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Stability analysis for the AIBO‐FDTD method

International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, 2008
AbstractThe stability of the implicit finite‐difference time‐domain (FDTD) method named alternating implicit block overlapped (AIBO) FDTD is presented in this paper. Based on separation of variables method, the spectral radius of the growth matrix for AIBO‐FDTD is obtained.
Liu, Guo-Sheng, Zhang, Guo-Ji, Hu, Bin-Jie   +2 more
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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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Numerical stability of nonorthogonal FDTD methods

IEEE Transactions on Antennas and Propagation, 2000
Summary: In this paper, a sufficient test for the numerical stability of generalized grid finite-difference time-domain (FDTD) schemes is presented. It is shown that the projection operators of such schemes must be symmetric positive definite. Without this property, such schemes can exhibit late-time instabilities. The origin and the characteristics of
Gedney, Stephen D., Roden, J. Alan
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A Compact Unconditionally Stable FDTD Method

IEEE Antennas and Wireless Propagation Letters, 2006
A novel compact unconditionally stable finite-difference time-domain (US-FDTD) method is introduced. This method utilizes proper intermediate field components to simplify the original unconditionally stable Crank-Nicolson (CN) scheme. The unconditionally stability of the proposed compact US-FDTD method is analytically proven.
P.-p. Ding, G. Wang, H. Lin, B.-z. Wang
openaire   +1 more source

Applications of the DG-FDTD method

2nd European Conference on Antennas and Propagation (EuCAP 2007), 2007
In 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, Pascaud, Romain, Gillard, Raphaël, Loison, Renaud, Wiart, Joe, Wong, Man-Faï, Lindmark, Björn, Garcia-Garcia, Laura   +7 more
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CPML Implementation for FCC-FDTD Method

2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE), 2018
The convolutional perfectly matched layer is implemented for the face-centered cubic grid which can substitute the standard Cartesian (Yee) grid. The face-centered cubic grid proves to have better grid isotropy and relaxed stability criterion. Here, we implemented the convolutional perfectly matched layer as an absorbing boundary for the face-centered ...
Kangbing Liu, Mohaira Ahmad, Lijuan Shi, Lixia Yang   +3 more
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Pointwise radiator in FDTD method

2010 5th International Confernce on Ultrawideband and Ultrashort Impulse Signals, 2010
The veracity of numerical FDTD simulation depends on a large extent on correct realization of the EM field source in the computation scheme. A survey of physical correspondence, simplicity of realization and convergence for several basic types of sources, being widespread in literature on FDTD simulation, is presented in the work.
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