IEEE Microwave and Guided Wave Letters · 1995 · 193 citations · 5 references
Numerical AnalysisElectromagnetic Scattering SimulationsEngineeringElectromagnetic CompatibilityBoundary ConditionsAnisotropic Lossy MappingNumerical SimulationComputational ElectromagneticsPml BbcBoundary Element MethodElectromagnetic WaveMethod Of Fundamental SolutionElectrical EngineeringBoundary ConditionPhysicsFree Boundary ProblemComputer EngineeringRadiation TransportInverse Scattering TransformsInverse ProblemsRadar ScatteringWave ScatteringHigh-frequency Approximation
An absorbing boundary condition (ABC), based on the PML BBC of Berenger (1994), used in the frequency domain to terminate the computational grid in electromagnetic scattering simulations is presented. Making use of an impedance-matched lossy layer, with directionally-dependent electric and magnetic conductivity, this ABC is independent of frequency and almost independent of incident angle. Thus it can be placed very close to a scatterer, minimizing the usual buffer of required, uninteresting computational space, and so reduce computer storage and CPU time. With this novel formulation, the ABC can be specified in three dimensions in almost the same manner as the standard FDFD equations, with only a small percentage of increased software overhead.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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