[数值]5[FDTD][Taflove-2002]Efficient modeling of infinite scatterers using a generalized....

Efficient modeling of infinite scatterers using a generalized total-field/scattered-field FDTD boundary partially embedded within PML %
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Anantha, V.   Taflove, A.   i<0_sxfUD  
Adv. Radio Technol., Motorola Inc., Arlington Heights, IL; 5(zdM)Y7  
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This paper appears in: Antennas and Propagation, IEEE Transactions on j,n\`7dD$  
Publication Date: Oct 2002 yPrF2@#XZ/  
Volume: 50,  Issue: 10 Sq&r ;  
On page(s): 1337- 1349 ?f}?I`S,  
ISSN: 0018-926X J':X$>
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INSPEC Accession Number: 7486269 (+yH   
Digital Object Identifier: 10.1109/TAP.2002.804571 GCf,Gfmr  
Current Version Published: 2003-01-06
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Abstract ;b{yu|  
This paper proposes a novel generalized total-field/scattered-field (G-TF/SF) formulation for finite-difference time-domain (FDTD) to efficiently model an infinite material scatterer illuminated by an arbitrarily oriented plane wave within a compact FDTD grid. This requires the sourcing of numerical plane waves traveling into, or originating from, the perfectly matched layer (PML) absorber bounding the grid. In this formulation, the G-TF/SF wave source boundary is located in part within the PML. We apply this technique to efficiently model two-dimensional (2D) transverse-magnetic diffraction of an infinite right-angle dielectric wedge and an infinite 45°-angle perfect-electrical-conductor wedge. This approach improves the computational efficiency of FDTD calculat .. SzP`(}AU  
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