منابع مشابه
Antenna Modelling Using the Dgf-fdtd Method
A new discrete Green’s function formulation of the finite difference time domain (DGF-FDTD) method has been developed which expresses the field response as a convolution of the current sources and the impulse response of the FDTD equation system. DGF-FDTD avoids the need for computation of free space nodes and absorbing boundary conditions. The method has been demonstrated by its application to...
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We demonstrate how a tightly-focused coherent TEMmn laser beam can be computed in the finite-difference time-domain (FDTD) method. The electromagnetic field around the focus is decomposed into a plane-wave spectrum, and approximated by a finite number of plane waves injected into the FDTD grid using the total-field/scattered-field (TF/SF) method. We provide an error analysis, and guidelines for...
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The computational cost of conventional lter methods for junction characterization is very high. This burden can be attenuated by using steerable lters. However, in order to achieve a high orientational selectivity to characterize complex junctions a large number of basis lters is necessary. From this results a yet too high computational eeort for steerable lters. In this paper we present a new ...
متن کاملEffective permittivity of mixtures: numerical validation by the FDTD method
The present paper reports the results of an extensive numerical analysis of electromagnetic fields in random dielectric materials. The effective permittivity of a two-dimensional (2-D) dielectric mixture is calculated by FDTD simulations of such a sample in a TEM waveguide. Various theoretical bounds are tested in light of the numerical simulations. The results show how the effective permittivi...
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As society places greater demands on technology, it becomes increasingly important to be able to simulate that technology. While simulation tools can be very sophisticated and capable of handling very complex devices and structures, the cost paid in computation time can be prohibitive. To reduce this time, a number of one-step schemes have been developed, but these schemes suffer from a setup t...
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ژورنال
عنوان ژورنال: IEEE Transactions on Antennas and Propagation
سال: 2016
ISSN: 0018-926X,1558-2221
DOI: 10.1109/tap.2016.2559520