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 60 for “"Computational Electromagnetics"”.
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Differential Geometry in Computational Electromagnetics
The algebraic model of Part II represents a somewhat radical approach to computation. In this approach, rather than take the classical theory based on the continuum as a given and constructing approximate numerical techniques from there, work is done toward constructing an alternative to the …
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Stochastic modeling in computational electromagnetics
… transmission properties of the wave-guide. The computational efficiency of the proposed method over Monte Carlo based alternatives is demonstrated through a specific example involving a periodically-loaded parallel plate waveguide.
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Recursive algorithms for computational electromagnetics
… These algorithms have less than $O(N\sp3)$ computational complexities and less than $O(N\sp2)$ memory requirements for arbitrary geometries of scatterers clustered together. Although the algorithms are discussed as they are applied to the electromagnetic scattering problems, their domains of …
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Computational electromagnetics for microstrip and MEMS structures
In the first part of this thesis, the quasi-3D thin-stratified medium fast-multipole algorithm (TSM-FMA) will be introduced for the analysis of general microstrip structures. It is based on a newly developed matrix-friendly dyadic Green's function for layered media (DGLM), which is represented in …
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The Performance of Preconditioned Iterative Methods in Computational Electromagnetics
The numerical solution of electromagnetic scattering problems involves the projection of an exact equation onto a finite-dimensional space, and the solution of the resulting matrix equation. By using iterative algorithms, the analysis of scatterers that are an order of magnitude larger electrically …
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Fast, Regularized, and High-Order Modelling in Advanced Computational Electromagnetics
L'abstract è presente nell'allegato / the abstract is in the attachment
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Stochastic techniques for computational electromagnetics and signal integrity design optimization
As speed and density of electronic systems continue to increase, uncertainties are becoming significant factors in system performance. This thesis provides an overview of stochastic numerical techniques in the context of electronic package modeling for signal integrity analysis. Examples are …
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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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Paradigms for Fast and Stable Boundary Element Methods in Computational Electromagnetics
L'abstract è presente nell'allegato / the abstract is in the attachment
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A study on computational electromagnetics problems with applications to casimir force calculations
… and the calculation of the Casimir force using computational electromagnetics (CEM). The calculation of the DGLM is desirable for many problems that involve stratified media, like the cases of the subsurface of the earth and seabed, or circuits involving layers of substrates. The DGLM helps make …
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Accuracy improvement of the second-kind Fredholm integral equations in computational electromagnetics
In computational electromagnetics, the second-kind Fredholm integral equations (IEs) are known to have very fast iterative convergence but rather poor solution accuracy compared with the first-kind Fredholm integral equations. The loss of the numerical accuracy is mainly due to the discretization …
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Use of Computational Electromagnetics to Enhance the Accuracy and Efficiency of Antenna Pattern Measurements
… of this dissertation is to illustrate that computational electromagnetics can be used to improve the accuracy and efficiency of antenna pattern measurements. </p> <p>This can be accomplished in many different ways, such as moving a single probe over the measurement plane to generate accurate …
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On the Implementation and Performance of Iterative Methods for Computational Electromagnetics (Scattering, Moment-Method, Conjugate-Gradient)
The numerical solution of electromagnetic scattering problems involves approximating an exact equation by a finite-dimensional matrix equation. The use of an iterative algorithm to solve the matrix equation sometimes results in a considerable savings in computer memory requirements. For a fixed …
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Acceleration of asymptotic computational electromagnetics physical optics — shooting and bouncing ray (PO-SBR) method using CUDA
… and Bouncing Ray (PO-SBR), an asymptotic computational electromagnetics (CEM) method, on the recently emerged general purpose graphics processing unit (GPGPU) using NVIDIA’s CUDA environment. In modern engineering, simulation programs are used to aid the development of advanced devices, …
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An enhanced augmented electric field integral equation and the calculation of casimir force using computational electromagnetics
… diagonal FMA at higher frequencies. Finally, the computational electromagnetic techniques are applied to the calculations of the Casimir force. The application of the integral equation method in Casimir force calculation is briefly reviewed and we proposed an efficient computing scheme using the …
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Development of potential-based time domain integral equations for quantum electrodynamics modeling
… the electromagnetic environment provided by computational electromagnetics methods operating purely in the classical regime. However, the unique requirements imposed by these applications are stressing the capabilities of traditional computational electromagnetics methods. To address this, …
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Graphics Processing Unit Acceleration Of Computational Electromagnetic Methods
… often relied upon in to perform simulations in computational electromagnetics. While originally designed purely to display graphics on the users monitor, GPU's today are essentially powerful floating point co-processors that can be programmed not only to render complex graphics, but also perform …
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Algebraic Multigrid for Discrete Differential Forms
… arise in scientific disciplines ranging from computational electromagnetics to computer graphics. Examples include stable discretizations of the eddy-current problem, topological methods for sensor network coverage, visualization of complex flows, surface parameterization, and the design of …
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A systematic computational study of cavity and waveguide quantum electrodynamics
In this thesis, a computational electromagnetics framework for cavity and waveguide quantum electrodynamics (CQED and WQED, respectively) is presented. By utilizing the classical dyadic Green's function, the quantum many body problem of multiple atoms interacting with an arbitrary lossless …
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