## Abstract A new method to reduce the numerical dispersion of the conventional alternating‐direction‐implicit finite‐difference time‐domain (ADI‐FDTD) method is proposed. First, the numerical formulations are modified with the artificial anisotropy, and the numerical dispersion relation is derived
Unsplit-field perfectly matched layer for higher-order alternating direction implicit finite-difference time-domain method
✍ Scribed by Y. F. Leung; C. H. Chan
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 101 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
An unsplit‐field perfectly matched layer (UPML) medium is introduced for higher‐order alternating direction implicit (ADI) formulation of the FDTD Method. By applying the proposed formulation, no field splitting is required for implementing higher‐order ADI‐FDTD PML; thus, the unconditionally stable nature of ADI‐FDTD is remained. The results of 2D simulation are used to illustrate the effectiveness of the PML medium, which is constructed using the proposed approach as an absorber for numerical grid truncation. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 43: 130–133, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20398
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