Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 172 for “"Finite difference time domain"”.
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Finite-difference time-domain analysis of horn antenna scattering
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; and, (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 1998.
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A geodesic finite-difference time-domain model of magnetized plasma
… Three-dimensional latitude-longitude finite-difference time-domain (FDTD) models accounting for the bathymetry, topography and ionosphere have been developed and applied towards a number of applications previously. However, to date most of these models treat the ionosphere as a simple, …
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Analysis of periodic structures using finite-difference time-domain method
… using the constant horizontal wavenumber finite-difference time-domain periodic boundary condition (FDTD/PBC). A new FDTD/PBC approach is introduced to analyze the scattering properties of general skegrid periodic structures. The approach is simple to implement and efficient in terms of …
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Finite difference time domain analysis of microstrip antenna-circuit modules
… radiation patterns were calculated for the first time. All of our results were in agreement with experimental findings.
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Finite-difference time-domain simulation of the Maxwell-Schrödinger system
A thorough study on the finite-difference time-domain (FDTD) simulation of the Maxwell-Schrödinger system is given in this thesis. This system is a very effective tool to simulate and study the light-matter interaction between electromagnetic (EM) radiation and a charged particle in the …
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Multiple region finite-difference time-domain modeling of duct cavities
… duct cavities in a piecewise manner using a finite-difference time-domain approach, modified to successively model individual subsections of the cavity. This change improves the computational efficiency of FD-TD while maintaining a high level of accuracy.
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Finite difference time domain simulation of subpicosecond semiconductor optical devices
… transport, which is a nonlinear phenomenon. Finite difference time domain (FDTD) technique is used to approximate the time dependent Maxwell's equations for full-wave analysis of the wave propagation. The dynamic transport is handled by solving the balance equations using the energy and …
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A Single-Field Finite-Difference Time-Domain Formulations for Electromagnetic Simulations
… a set of general purpose single-field finite-difference time-domain updating equations for solving electromagnetic problems is derived. The formulation uses a single-field expression for full-wave solution. This formulation can provide numerical results similar to those obtained using …
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Effective development of cylindrical finite-difference time-domain for electromagnetics applications
Computationally, the size of the domain is important in terms of the memory and time to complete the run and collect the results. Thus, a conventional perfectly matched layer (PML) can be used to truncate computational regions in numerical methods. This will reduce the memory size and the time to …
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Probabilistic finite-difference time-domain simulations using stochastic electromagnetic macro-models
… with the electromagnetic macro-model in the finite-difference time-domain (FDTD) method. We provide a methodology for the efficient generation and utilization of the stochastic macro-model for the purpose of time-domain analysis in FDTD. The methodology quantifies the impact of uncertainty, …
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Finite difference-time domain analysis of electromagnetic interference and radiation problems
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Modeling electrically small apertures using the finite difference-time domain method
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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A Finite-Difference Time-Domain Electromagnetic Solver in a Generalized Coordinate System
A new, finite-difference, time-domain method for the simulation of full-wave electromagnetic wave propogation in complex structures is developed. This method is simple and flexible; it allows for the simulation of transient wave propogation in a large class of practical structures. Boundary …
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Analysis of photonic crystal filters by the finite-difference time-domain technique
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.
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Finite-difference time-domain modeling of oblique indidence scattering from periodic surfaces
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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A new finite-difference time-domain method applied to an open waveguide structure.
The study makes use of a variation of the Finite-Difference Time-Domain (FDTD) method as first proposed by Yee to simulate electromagnetic field distribution and propagation in an open waveguide structure. In order to prove that this new method is valid, a reflection coefficient is calculated with …
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Interference Modelling for Indoor Wireless Systems using the Finite-Difference Time-Domain Method
… of fully-electromagnetic techniques, such as the Finite-Difference Time- Domain (FDTD) method, limits their applicability for day-to-day system planning purposes at this stage. The research presented in this thesis describes a series of FDTD investigations of the indoor radio channel, using two- …
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Efficient modeling of passive electronic devices using the finite-difference time domain method
… cavity resonators, that are analyzed using the Finite Difference Time Domain (FDTD) algorithm for solving Maxwell's equations. One of the fundamental problems associated with analyzing this class of structures is that accurate modeling of their fine features typically requires a large mesh and …
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Finite-difference time-domain simulation of electromagnetic scattering from objects under random media
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
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Implementation of the Finite Difference Time Domain algorithm for the analysis of terahertz waves
… results related to the application of the Finite Difference Time Domain (FDTD) method for the study of various devices at terahertz frequencies. The FDTD method has emerged as one of the most widely used numerical analysis methods used for electromagnetic simulations. The FDTD method can be …
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