Dispersion properties of nonradiating configurations: Finite-difference time-domain modeling
نویسندگان
چکیده
منابع مشابه
Dispersion properties of nonradiating configurations: finite-difference time-domain modeling.
A finite-difference time-domain (FDTD) numerical analysis is used to demonstrate that a toroidal solenoid, coaxial with an electric dipole, is a remarkable nonradiating configuration. It can be used to measure the dielectric permittivity of any ambient matter. It becomes a directional radiator at an interface between two dielectric media, depositing energy in the material with the highest polar...
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The finite-difference-time-domain (FDTD), although recognized as a flexible, robust and simple to implement method for solving complex electromagnetic problems, is subject to numerical dispersion errors. In addition to the traditional ways for reducing dispersion, i.e., increasing sampling rate and using higher order degrees of accuracy, a number of schemes have been proposed recently. In this ...
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The classic Yee Finite-Difference Time-Domain (FDTD) algorithm employs central differences to achieve second-order accuracy, i.e., if the spatial and temporal step sizes are reduced by a factor of , the phase error associated with propagation through the grid will be reduced by a factor of . The Yee algorithm is also second-order isotropic meaning the error as a function of the direction of pro...
متن کاملمحاسبه ساختار باند بلورهای فوتونی دو بعدی با استفاده از روش finite difference time domain (fdtd(
چکیده ندارد.
15 صفحه اولScalar Wave Equation Modeling with Time–Space Domain Dispersion-Relation-Based Staggered-Grid Finite-Difference Schemes
The staggered-grid finite-difference (SFD) method is widely used in numerical modeling of wave equations. Conventional SFD stencils for spatial derivatives are usually designed in the space domain. However, when they are used to solve wave equations, it becomes difficult to satisfy the dispersion relations exactly. Liu and Sen (2009c) proposed anewSFDscheme for one-dimensional (1D) scalarwaveeq...
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ژورنال
عنوان ژورنال: Physical Review E
سال: 2005
ISSN: 1539-3755,1550-2376
DOI: 10.1103/physreve.72.036603