IEEE Antennas and Wireless Propagation Letters · 2004 · 11 citations · 9 references
EngineeringComputational EngineeringElectrical EngineeringComputational ElectromagneticsMicrowave EngineeringPropagationDevice SimulationElectromagnetic MethodsFinite Difference MethodsFinite Difference Time Domain AnalysisMicrowave PropagationPropagation In ConductorsConductive MediaCurrent DensityFinite Difference DiscretizationFinite Difference SchemesFinite Difference SimulationFinite Difference Time Domain ModelingFinite Difference Time Domain SimulationNumerical Dispersion
The letter presents a new finite-difference scheme for the incorporation of conductive media into finite-difference time-domain (FDTD) simulators. The method is based on the approximation of the current density term by a weighted average with coefficients that are not known a priori. The optimum values of these coefficients are determined by minimizing the dispersion error inside the conductor. The cases of single-frequency and wide-band FDTD simulations are discussed. The superior performance of the proposed scheme over other existing approaches is shown.
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