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 381 for “"electromagnetics"”.
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Electromagnetics in characterizations
(cont.) Characterization of the differential guided mode of a coupled-strip transmission line allows us to understand its behaviors in high frequency circuit applications. S-parameters of the differential mode of a coupled-strip transmission line on a multi-layer silicon substrate extracted from …
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Inverse problems in electromagnetics
Two inverse problems in electromagnetics are investigated in this thesis. The first is the retrieval of the effective constitutive parameters of metamaterials from the measurement of the reflection and the transmission coefficients. A robust method is proposed for the retrieval of metamaterials as …
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Composite Nanoparticle Materials for Electromagnetics
… other possibly hundreds of applications that use 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
This thesis presents methodologies for the efficient assessment of the impact of statistical variability on the performance of electromagnetic structures and systems. The proposed techniques are based on the Sparse Grid Collocation method which is a more efficient alternative than the standard …
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Recursive algorithms for computational electromagnetics
Efficient and fast recursive algorithms for both the spectral-domain and the space-domain solutions of the electromagnetic scattering problems have been developed. These algorithms have less than $O(N\sp3)$ computational complexities and less than $O(N\sp2)$ memory requirements for arbitrary …
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SVM-based Strategies as applied to Electromagnetics
In the framework of the electromagnetic approaches based on learning-by-example (LBE) techniques, this thesis focuses on the development of a strategy for the solution of complex problems by means of support vector machine (SVM). The proposed instance-based classification method compared to more …
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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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Control and quantification of near-field electromagnetics
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-05-01
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Physical modeling of lateral variations in transient electromagnetics
Includes bibliographical references.
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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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Novel Computational Strategies for the Inverse Source Problem in 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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Some composite boundary value problems in electromagnetics and their applications
In this thesis, some composite boundary value problems of stratified media with various types of discontinuities are discussed. These problems fall into three categories: (i) a disk on top of a stratified medium; (ii) a general multiregion vertically stratified medium; and (iii) a slantingly …
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Assessing the benefits of DCT compressive sensing for computational electromagnetics
… once integrated with a commercial electromagnetics solver, reduced the computation cost of a single simulation from seven days to eight hours. Compressive sensing is highly applicable to practical applications and my research highlights both its benefits and areas for improvement …
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Surrogate optimization with algebraic notes and applications within the electromagnetics context
… optimization for applications within the electromagnetics context. Regarding the electromagnetics context, in particular, the magnetoquasistatic model of Maxwell’s theory is discussed. Moreover, relevant points regarding the magnetoquasistatic model’s numerical simulation and numerical …
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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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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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