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 38 for “"Electromagnetic analysis"”.
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Electromagnetic analysis with discrete exterior calculus
… to implement discrete exterior calculus (DEC) in electromagnetic analysis. The problem is studied for both partial differential equation (PDE) and integral equation (IE) based approaches. A systematical treatment is proposed for various boundary conditions. With a careful implementation of the …
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A generalized precorrected-FFT method for electromagnetic analysis
… its utility for both electrostatic and full-wave electromagnetic problems in volumes with homogeneous isotropic permittivity, bounded by arbitrarily complex surface geometries. The code is shown to have performance characteristics similar to the best known approaches for these problems. It also …
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Matrix-free time-domain methods for general electromagnetic analysis
… scale problems. Among existing computational electromagnetic methods, the explicit finite-difference time-domain (FDTD) method is free of matrix solutions. However, it requires a structured orthogonal grid for space discretization. In this work, we develop a new time-domain method that …
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Electromagnetic Analysis of Horn Antennas in the Terahertz region
This thesis is concerned with the application of electromagnetic modelling techniques to the analysis of horn antenna characteristics over the terahertz range, 0.1 THz to 5 THz. The mode matching technique based on a scattering matrix approach to describe beam propagation in both the forward and …
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Advanced Time-Domain Finite-Element Method for Electromagnetic Analysis
… finite-element method (TDFEM) is studied for electromagnetic analysis. Solutions to a series of open problems that impede the popularity of the TDFEM are presented. These problems include the development of accurate and efficient absorbing boundary conditions for the mesh truncation of the …
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Augmented Surface Integral Equation Method for Low-Frequency Electromagnetic Analysis
… effect, have been addressed for full-wave electromagnetic analysis in the low-frequency regime, especially the modeling of electrical interconnects on chip and package levels. The augmentation technique is a simple and efficient remedy for the low-frequency breakdown, which is the …
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Fast time- and frequency-domain finite-element methods for electromagnetic analysis
<p>Fast electromagnetic analysis in time and frequency domain is of critical importance to the design of integrated circuits (IC) and other advanced engineering products and systems. Many IC structures constitute a very large scale problem in modeling and simulation, the size of which also …
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Parallel Fft-Accelerated Time-Domain Integral Equation Solvers for Electromagnetic Analysis
This dissertation presents a fast electromagnetic field-circuit simulator that permits the full-wave modeling of transients in microwave systems containing multiscale structures and nonlinear devices. This time-domain simulator is composed of two components: (i) a full-wave solver that models …
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Fast Multilevel Algorithms for the Electromagnetic Analysis of Quasi-Planar Structures
The analysis of electromagnetic scattering and radiation from quasi-planar structures is a topic of great current interest, owing to the wide range of applications. A host of structures and surfaces are included in the quasi-planar class, including rough surfaces, quantum well infrared …
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A comprehensive electromagnetic analysis of AC losses in large superconducting cables
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Methodology for electromagnetic analysis using the finite element method for fusion reactor components
En el diseño de componentes de reactores de fusión se realizan análisis electromagnéticos (EM) para verificar que soportan las cargas EM que surgen durante eventos de plasma transitorios, asegurando así su correcto funcionamiento. La metodología para la realización de análisis EM para componentes …
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Transient Electromagnetic Analysis for Microstrip Structures Based on Time Domain Integral Equation Method
"Recently, techniques for time domain electromagnetic (EM) simulation have been receiving increasing attention. This thesis focuses on time domain integral equation methods, also known as time domain method of moments (TD-MOM), for analyzing scattering and radiation problems. TD-MOM schemes are …
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Efficient Finite Element Electromagnetic Analysis for High-Frequency/High-Speed Circuits And Multiconductor Transmission Lines
… of a robust and efficient 3-D finite element electromagnetic field solver with high-order vector elements for high-frequency and high-speed circuit simulations. The solver supports wave port and lumped port excitations as well as the incorporation of lumped networks and circuit models in a …
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Modeling of conductor surface roughness effect
… inside a conductor and the subsequent effect on electromagnetic properties of the conductor. The existence of surface roughness on a conductor disturbs current flow and results in a higher than usual ohmic loss. This, in turn, impacts the performance of a variety of high-frequency interconnect, …
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Planar Magnetics Design For Low-voltage Dc-dc Converters
… design planar magnetic devices based on accurate electromagnetic analysis and miniaturize magnetics within desired low profile as well as small footprint. A novel methodology based on FEM simulation is proposed. By introducing Maxwell 2D simulator, optimal interleaving structures can be found to …
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The electromagnetic modelling and optimization of planar holographic antennas
… appears to have made to use some computational electromagnetics approach to model these antennas. Thus no numerical optimization has been possible. One aspect that makes the modeling/optimization process difficult is that such planar holographic antennas are electrically large. For instance, in …
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Optimization of microwave devices
… developed to connect the optimization with an electromagnetic analysis tool. In the first method the algorithm has been connected to a numerical technique for the evaluation of the device performance (FDFD). The second technique consists on the integration of the algorithm with a 3D Simulation …
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Numerical analysis for quantum electrodynamics in the ultrastrong coupling regime
… exterior calculus (DEC) is considered for electromagnetic analysis of quantum devices. The study investigates the satisfaction of the generalized Helmholtz decomposition in DEC simulations in the presence of multiple types of boundary conditions, paving the way for its application in …
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