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 188 for “"electromagnetic interference"”.
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Electromagnetic interference in electronic circuits and systems
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Emission source microscopy for electromagnetic interference source localization
… to localize the sources of radiation. Near-field electromagnetic scanning is used often for root-cause diagnosis by determining field distribution close to the PCB. In the near-field, the evanescent waves are dominant, which may lead to the misinterpretation of them being the dominant sources …
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Absorption-Dominant Electromagnetic Interference Shielding Polymer Composites and Foams
… solution for achieving absorption-dominant electromagnetic interference (EMI) shielding while mitigating secondary electromagnetic pollution. Despite the significance of structural and geometrical factors in creating high-performance absorption-dominant EMI shielding materials, systematic …
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Evaluation of electromagnetic interference fringes for two-layer media.
Thesis: Elec. E., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 1978
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Microcontroller (8051-core) instruction susceptibility to intentional electromagnetic interference (IEMI)
Intentional Electromagnetic Interference (IEMI) is a rising threat to the electronic systems that are used and depended upon in everyday life of civil society. To address this threat, it is important to develop an understanding of what IEMI is and how it can be used to disrupt sophisticated …
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Electromagnetic Interference and Compatibility within SiC-based Medium Voltage Converters
… carbide (SiC) devices gives rise to more severe electromagnetic interference (EMI) challenges than ever before due to their fast switching capability. Meanwhile, medium voltage (MV) high power converters have been pushed to higher power, higher voltage, and higher power density design …
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Anticipating system-level electromagnetic interference using numerical methods and measurement techniques
… for solving the accompanying increase of electromagnetic interference (EMI) problems. In this work, strategies combining both numerical modeling and experimental techniques are developed for anticipating system-level EMI at the early stage, and verified in a controlled laboratory …
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Mitigating Electromagnetic Interference in Unshielded MRI: Implementation, Experimentation, and Future Directions
… Operating outside an RF-shielded room introduces electromagnetic interference (EMI), degrading further the signal-to-noise ratio (SNR) which is already diminished due to the lower magnetic fields used in portable imaging. Existing methods to reduce EMI perform well in simple noise environments, …
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Finite difference-time domain analysis of electromagnetic interference and radiation problems
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Passive Cancellation of Common-Mode Electromagnetic Interference in Switching Power Converters
It is well known that common-mode (CM) conducted electromagnetic interference (EMI) is caused by the common-mode current flowing through the parasitic capacitance of transistors, diodes, and transformers to ground in the power circuit. Because of the potential for interference with other systems as …
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Electromagnetic Interference Attacks on Cyber-Physical Systems: Theory, Demonstration, and Defense
… attacks that utilize natural phenomena (e.g., electromagnetic waves) to manipulate safety-critic signals such as analog sensor outputs, digital data, and actuation signals have recently taken the attention. The purpose of this dissertation is to detect the weaknesses of cyber-physical systems …
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Modeling strategies for estimating and suppressing electromagnetic interference and improving power integrity
… or isolating the noise source can suppress electromagnetic interference. Numerical and analytical methods can accurately estimate shielding effectiveness if the conductivity and permeability of the shielding material is known. A measurement process for obtaining equivalent material …
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Carbon Hybrid Materials for Electromagnetic Interference (EMI) Shielding and Charge Storage Applications
… of polymer nanocomposites namely, EMI (electromagnetic interference) shielding and charge storage. In EMI shielding, our goal was to alleviate the destructive interference of electronic devices caused by their emitted electromagnetic waves which adversely affect device functions as well …
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Investigation of electromagnetic interference of PWM motor drives in automotive electrical systems
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.
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Models predicting the performance of IC component or PCB channel during electromagnetic interference
… susceptibility of delay locked loop (DLL) to electromagnetic interference.</p> <p>In the first paper, an improved tail-fit de-convolution method is proposed for characterizing the impact of deterministic jitter in the presence of random jitter. A Wiener filter de-convolution method is also …
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Frequency Domain Conductive Electromagnetic Interference Modeling and Prediction with Parasitics Extraction for Inverters
… and simulation methodology to predict conductive electromagnetic interference (EMI) for high power converters. Conventionally, the EMI prediction relies on the Fast Fourier Transformation (FFT) method with the time-domain simulation result that requires long hours of simulation and a large amount …
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Separation of the common-mode and the differential-mode conducted electromagnetic interference noise
One of the difficulties in solving E:MI problems is the lack of diagnostic tools available. In this thesis work, a tool, called Noise Separator, is developed, which can be used to decipher the differential-mode (DM) noise and the common-mode (CM) noise from the total noise. A noise separator …
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