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 33 for “"electromagnetic modeling"”.
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Low-Frequency Subsurface Electromagnetic Modeling
Subsurface electromagnetic (EM) methods are applied to obtain underground information that is not available from surface observations. This research develops numerical methods for subsurface electromagnetic modeling. The dissertation includes: (1) fast one-dimensional forward and inverse modeling, …
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Usability Engineering Applied to an Electromagnetic Modeling Tool
… packages for model-building and visualization in electromagnetic geophysics, particularly when compared to other geophysical disciplines, such as seismology. The purpose of this thesis is to design, develop, and test a geophysical model-building interface that allows users to parameterize the 2D …
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Fast Electromagnetic Modeling of Multilayer Microstrip Antennas and Circuits
With these techniques together, a fast integral equation solver for microstrip structures in multilayer media is developed. Examples of circuits and antennas are presented to demonstrate the accuracy and efficiency of this solver.
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Electromagnetic Modeling of Packaging Layout in Power Electronic Modules
This thesis presents the modeling approaches and the challenges involved in electromagnetic modeling of packaging layout. It discusses the methodologies that are being used today. It then applies these methodologies to analyze, model and characterize three packaging technologies: (i) the wirebond …
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Electromagnetic modeling of terahertz quantum cascade laser waveguides and resonators
Finite-element numerical modeling and analysis of electromagnetic waveguides and resonators used in terahertz (THz) quantum cascade lasers (QCLs) is presented. Simulations and analysis of two types were performed: two-dimensional waveguides, and two- and three-dimensional resonators. Both …
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Methodologies for Broadband Electromagnetic Modeling of on-Chip Semiconductor Substrate Noise
For a full-wave modeling of the substrate coupling problem the thesis elaborates on a number of features for the time domain finite integration technique (FIT), a volumetric discretization scheme, aimed at improving its computational performance for the type of geometrical characteristics …
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Multi-solver schemes for electromagnetic modeling of large and complex objects
… on the development of numerical algorithms for electromagnetic modeling of large and complex objects. First, a GPU-accelerated multilevel fast multipole algorithm (MLFMA) is presented to improve the efficiency of the traditional MLFMA by taking advantage of GPU hardware advancement. The proposed …
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Dual-energy electromagnetic modeling, with application to variable reluctance motor analysis
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Methodologies for Design-Oriented Electromagnetic Modeling of Planar Passive Power Processors
… increase in device temperature, parasitics and electromagnetic radiation. An accurate set of reduced-order modeling methodologies is presented in this work in order to predict the high-frequency behavior of inductors and transformers. Analytical frequency-dependent expressions to predict losses …
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Numerical Methods for the Electromagnetic Modeling of Microstrip Antennas and Feed Systems
… derives the dyadic Green functions for the electromagnetic fields in a multilayered medium and shows their relationship to the more familiar Green functions for ordinary transmission lines. This approach simplifies the analysis and allows the treatment of an arbitrary number of layers with a …
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Discontinuous Galerkin Based Multi-Domain Multi-Solver Technique for Efficient Multiscale Electromagnetic Modeling
… (DG) methods provide an efficient option for modeling multiscale problems. With the help of the Riemann solver (upwind flux), a discontinuous Galerkin based multi-domain multi-solver technique is introduced in this work for multiscale electromagnetic modeling. Specifically, the proposed …
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Rigorous Electromagnetic Modeling of Conductor and Substrate Losses for High -Speed Interconnect Structures
This dissertation focuses on the electromagnetic modeling of planar layered interconnect structures. This broad class of transmission lines includes structures ranging from on-chip interconnects, thin film, and ceramic multichip modules to printed circuit boards. While similar, these wiring …
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Finite element methods for the electromagnetic modeling of waveguide discontinuities and cavity resonators
Restriction data tranferred 2014-07-01T11:29:27-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission
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Electromagnetic modeling of hot-wire detonators using analytical and numerical methods with comparison to experiment
The electromagnetic (EM) characteristics of hot-wire detonators are determined in order to quantify more precisely their response to EM illumination. The analyses include a comprehensive study of detonators physical characteristics, which is then used to model detonators using transmission line …
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Efficient Broadband Electromagnetic Modeling of the Power Distribution Network in High -Speed, Mixed -Signal Integrated Circuits
… resulting discrete, locally three-dimensional electromagnetic model, is used in conjunction with a passive reduced-order interconnect macromodeling algorithm to generate low-order, multiport macromodels of the power distribution network that can be incorporated in nonlinear circuit simulators …
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Electromagnetic Modeling of the Power Distribution Network in Packaged Integrated Circuits Using a Hybrid Extended Segmentation Method
… modular extended segmentation procedure for the electromagnetic modeling of the power distribution network in packaged integrated circuits. The fundamental blocks that build the power distribution network are identified and modeled individually. An integral equation approach is employed for the …
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Electromagnetic modeling and variable-speed-operation characteristics of inverter-driven, high-frequency, low-inductance permanent magnet synchronous machines
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01
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Methodologies and Algorithms for Finite Element Analysis of Electromagnetic Devices and Systems
… robust, efficient, and fast finite-element-based electromagnetic modeling is considered for integrated and packaged electronic components and systems using enhanced formulations and algorithms. First, efficient and robust formulations and algorithms are presented for two-dimensional waveguide …
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Assessing the benefits of DCT compressive sensing for computational electromagnetics
Computational electromagnetic problems are becoming exceedingly complex and traditional computation methods are simply no longer good enough for our technologically advancing world. Compressive sensing theory states that signals, such as those used in computational electromagnetic problems have a …
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