Results 141 to 150 of about 1,717 (189)
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IEEE Antennas and Propagation Society International Symposium 1997. Digest, 2002
The use of a perfectly matched layer (PML) has been demonstrated as a highly efficient absorbing boundary condition in FDTD (Berenger 1994). Although the PML is supposed to absorb the outgoing wave totally, its discrete implementation gives rise to numerical reflections.
null Li Zhao, A.C. Cangellaris
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The use of a perfectly matched layer (PML) has been demonstrated as a highly efficient absorbing boundary condition in FDTD (Berenger 1994). Although the PML is supposed to absorb the outgoing wave totally, its discrete implementation gives rise to numerical reflections.
null Li Zhao, A.C. Cangellaris
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Implementation of Perfectly Matched Layer (PML) for the WCS-FDTD Method Using DSP Techniques
IEEE Antennas and Wireless Propagation Letters, 2014An efficient implementation of perfectly matched layer (PML), based on the stretched coordinate PML (SC-PML) and digital signal processing (DSP) techniques, is proposed to truncate the weakly conditional stable finite-difference time-domain (WCS-FDTD) lattices.
Meng-Lin Zhai +4 more
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IEEE Transactions on Microwave Theory and Techniques, 1997
This paper describes the algorithm that interfaces the three-dimensional (3-D) transmission-line matrix (TLM) with an absorbing-boundary condition (ABC) based on the perfectly matched-layer (PML) approach. The algorithm uses a coupling between the TLM symmetrical condensed node (SCN) network and a finite-difference approximation of the PML equations ...
N. Pena, M.M. Ney
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This paper describes the algorithm that interfaces the three-dimensional (3-D) transmission-line matrix (TLM) with an absorbing-boundary condition (ABC) based on the perfectly matched-layer (PML) approach. The algorithm uses a coupling between the TLM symmetrical condensed node (SCN) network and a finite-difference approximation of the PML equations ...
N. Pena, M.M. Ney
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Uniaxial Omega Medium as a Physically Realizable Alternative for the Perfectly Matched Layer (Pml)
Journal of Electromagnetic Waves and Applications, 1998Summary: Perfectly matched layers suggested for the grid termination in FDTD numerical simulations are active media, thus physically nonrealizable as composite materials with passive inclusions. In this paper we show that spatially dispersive passive media can be in principle used instead of the active PML.
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IEEE Antennas and Wireless Propagation Letters, 2016
In this letter, a Berenger's split-field perfectly matching layer (BS-PML) as an absorbing boundary condition for solutions of the two-dimensional numerical mode matching (NMM) method has been proposed to model the field in media involving lossless layers instead of the traditional truncated boundary condition. The proposed method guarantees the proper
Zijian Liu +3 more
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In this letter, a Berenger's split-field perfectly matching layer (BS-PML) as an absorbing boundary condition for solutions of the two-dimensional numerical mode matching (NMM) method has been proposed to model the field in media involving lossless layers instead of the traditional truncated boundary condition. The proposed method guarantees the proper
Zijian Liu +3 more
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Proceedings of the Fifteenth National Radio Science Conference. NRSC '98 (Cat. No.98EX109), 2002
Because of their superior absorption characteristics, the Perfectly Matched Layer (PML) absorbers are used in truncating finite element domains. However, their implementation is equivalent to imposing active elements inside the main mesh. Consequently, the condition number of the resulting systems deteriorates. In this work, an efficient preconditioned
Y.Y. Botros, J.L. Volakis
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Because of their superior absorption characteristics, the Perfectly Matched Layer (PML) absorbers are used in truncating finite element domains. However, their implementation is equivalent to imposing active elements inside the main mesh. Consequently, the condition number of the resulting systems deteriorates. In this work, an efficient preconditioned
Y.Y. Botros, J.L. Volakis
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The generalized theory of perfectly matched layers (GT-PML) in curvilinear co-ordinates
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, 2000Summary: In this paper, the generalized theory for perfectly matched layers, originally presented as a systematic development of the unsplit-field formulation of perfectly matched absorbers in cartesian co-ordinates, is extended to curvilinear co-ordinates.
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Optical and Quantum Electronics, 2019
The absorbing boundary condition (ABC) and the perfectly matched layer (PML) are employed to suppress the numerical reflections in wave propagation methods. The PML has earlier been shown to fail at the grazing angle propagation of beam. The ABC is preferred over the PML where refractive index is not an analytic function.
Ramesh Kumar, Anurag Sharma
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The absorbing boundary condition (ABC) and the perfectly matched layer (PML) are employed to suppress the numerical reflections in wave propagation methods. The PML has earlier been shown to fail at the grazing angle propagation of beam. The ABC is preferred over the PML where refractive index is not an analytic function.
Ramesh Kumar, Anurag Sharma
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Integrated Photonics Research, 1996
One of the key issues in implementing a numerical scheme such as the finite-difference method to solve a partial differential equation such as the Helmholtz equation in infinite spatial domain is the numerical boundary condition. Several techniques have been used in the finite-difference beam propagation method.
W. P. Huang +3 more
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One of the key issues in implementing a numerical scheme such as the finite-difference method to solve a partial differential equation such as the Helmholtz equation in infinite spatial domain is the numerical boundary condition. Several techniques have been used in the finite-difference beam propagation method.
W. P. Huang +3 more
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IEEE Microwave and Guided Wave Letters, 1996
An efficient three-dimensional (3-D) implementation of the perfectly matched layer (PML) type of absorbing medium is presented. The technique combines a new eight-unknown time domain formulation in regions in which there is only one nonzero conductivity with the original 12-unknown formulation in the edge and corner regions where nonzero conductivities
J.C. Veihl, R. Mittra
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An efficient three-dimensional (3-D) implementation of the perfectly matched layer (PML) type of absorbing medium is presented. The technique combines a new eight-unknown time domain formulation in regions in which there is only one nonzero conductivity with the original 12-unknown formulation in the edge and corner regions where nonzero conductivities
J.C. Veihl, R. Mittra
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