Electromagnetic waves · 2007 · 23 citations · 17 references
EngineeringComputational EngineeringElectrical EngineeringComputational ElectromagneticsComputational PhysicsMicrowave EngineeringFinite Difference Time Domain AnalysisMicrowave Device SimulationMicrowave PropagationPropagation ModelingTransmission LinesWaveguidesDivergenceFinite Difference Time Domain For Microwave CircuitsFinite Difference Time Domain For WaveguidesFinite Difference Time Domain SimulationNumerical DispersionNumerical Dispersion AnalysisWaveguide DispersionWaveguide Simulation
This work investigates the unique numerical dispersion behavior of the Compact-FDTD method for waveguide analysis, especially when the waveguide dimensions are much larger than the operating wavelength as in high-frequency EMC analysis or radio-wave propagation in tunnels. The divergence of this dispersion behavior from the standard FDTD algorithm is quantified and a major source of dispersion error is isolated and effectively eliminated. Optimized modeling parameters in terms of appropriate spatial and temporal resolutions are generated for computationally efficient and error-free numerical simulations of electrically large waveguiding structures.
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