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 9 of 9 for “"low-frequency breakdown"”.
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Accurate, efficient, and stable domain decomposition methods for analysis of electromechanical problems
… (TCS) method is adopted to deal with the low-frequency breakdown problem, which often accompanies the finite-element analysis of electromechanical problems. Third, higher-order hierarchical basis functions are implemented to improve the accuracy of the simulation and also to facilitate the …
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Augmented Surface Integral Equation Method for Low-Frequency Electromagnetic Analysis
… integral equation (SIE) method including the low-frequency breakdown, the skin effect, and the substrate 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 …
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A surface integral equation method for dielectrics at low frequencies
… special considerations are needed because of the low frequency breakdown. The augmented technique, a useful remedy for low frequency breakdown of the electric field integral equation is introduced as the background of this thesis. This augmented electric field integral equation provides a simple …
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Studies on Low Frequency Fast Multipole Algorithms
The low frequency breakdown problem of MLFMA is studied in the second part. A low frequency fast inhomogeneous plane wave algorithm (LF-FIPWA) is developed to overcome this issue with the transition region around 0.1 wavelength. Evanescent waves and propagating waves are both used to compensate for …
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Electromagnetic analysis with discrete exterior calculus
… with general Lorentz gauge to circumvent the low frequency breakdown for conventional E formulation. A set of decoupled boundary conditions is studied and numerically tested.
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An enhanced volume integral equation method and augmented equivalence principle algorithm for low frequency problems
… scalar potential term and avoid the imbalance at low frequencies. The current continuity constraint is enforced in both the scattering operator and translation operator. These further form a new augmented EPA equation system. With this technique, the low-frequency breakdown of EPA is removed. The …
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Finite element analysis of 3D electric machine problems
… Since electric machines usually operate in a low frequency band, it is necessary to handle the low-frequency breakdown problem properly. In this thesis, we propose two possible solutions. One is to solve the singular system directly by using an iterative solver. Another is to regularize the …
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A study on computational electromagnetics problems with applications to casimir force calculations
… solving of these problems more efficient by allowing for the layered inhomogeneity to be incorporated into the Green's function. In this manner, we no longer need to explicitly model the background inhomogeneity. However, the calculation of the DGLM requires the evaluation of semi-infinite …
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Efficient Finite Element Electromagnetic Analysis for High-Frequency/High-Speed Circuits And Multiconductor Transmission Lines
This dissertation comprises the following four components. (1) Development 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 …