NDLI: Modeling and minimization of discretization error in one-dimensional PML's using FDTD

Content Provider	IEEE Xplore Digital Library
Author	Lopez-Villegas, J.M. Vidal, N.
Copyright Year	2007
Description	Author affiliation: Barcelona Univ., Barcelona (Lopez-Villegas, J.M.; Vidal, N.)
Abstract	This work presents an accurate physical model of discretization error in one-dimensional perfectly matched layer (PML) using finite difference time domain (FDTD) method. The proposed model is based on the concept of the effective wave impedance of the PML. This concept implies that the wave impedance in the discretized space changes, with respect to the continuous value, when absorption occurs. These changes are dependent on the PML absorption per unit length as well as on the cell size. The validity of the proposed model has been checked with numerical simulations in coaxial waveguide geometry. One of the important consequences of the proposed modeling scheme is the feasibility of a PML with, ideally, no return losses due to discretization error. This prediction has also been corroborated by numerical simulations; being the improvement of the PML return losses of about 30 dB.
Starting Page	1
Ending Page	4
File Size	913911
Page Count	4
File Format	PDF
ISBN	9781424411696
DOI	10.1109/CEMTD.2007.4373512
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-15
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Time domain analysis absorbing boundary conditions (ABC) Conducting materials discretization error perfectly matched layer (PML) Electromagnetic wave absorption FDTD methods effective wave impedance (EWI) Electromagnetic scattering Numerical simulation Perfectly matched layers Electromagnetic propagation in absorbing media Impedance Electromagnetic propagation Finite difference methods
Content Type	Text
Resource Type	Article

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