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 78 for “"noise analysis"”.
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Noise analysis of switched capacitor filters
The self noise output of switched-capacitor (SC) filters was examined. The two main noise sources in SC filters are switch transistors and the operational amplifiers. These noise sources were modeled as switch thermal white noise and op-amp input white noise. The existence of direct and …
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Integrated Circuit Substrate Modeling for Noise Analysis
In addition, the need for the extension of this methodology to the frequency-dependent case, where electromagnetic effects such as displacement current and skin effect cannot be assumed negligible, has been argued and demonstrated in this dissertation.
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URBAN SEISMIC AMBIENT NOISE ANALYSIS: INNOVATIONS AND APPLICATIONS
Seismic ambient noise generated by human activities provides an opportunity to monitor aboveground human activities without intruding on privacy. However, extracting specific signals from noisy seismic noise is challenging. Seismic ambient noise also contains information about the underground …
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Noise analysis of circuit models representing maser operation.
Thesis: M.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1965
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Noise analysis of a homomorphic automatic volume control system.
Thesis: Elec. E., Massachusetts Institute of Technology, Department of Electrical Engineering, 1968
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Noise analysis of a suspended high power Michelson interferometer
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1997.
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Monte Carlo simulation for high-frequency intrinsic noise analysis of MOSFET
… a Monte Carlo simulation of intrinsic electronic noise in MOSFETs. Brief reviews of the important aspects of carrier transport, band structure, and Monte Carlo technique are discussed. Based on full band 2D Monte Carlo simulation, a noise analysis platform is utilized. To this end, accurate …
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Sensitivity and noise analysis of solenoidal coils for nuclear magnetic resonance microscopy
… development of microscopic NMR systems for the analysis of smaller samples and the visualization of microscopic biological structures. The objective of the research summarized in this thesis is to extend the analysis of RF coils used for NMR to microscopic domains. Microscopic nuclear magnetic …
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Sensitivity and noise analysis of 4 km laser interferometric gravitational wave antennae
… this thesis is the modeling and reduction of the noise in the interferometers which limits their ultimate sensitivity. A vital component of the noise reduction is the modeling, design, and implementation of [approximately]100 feedback control systems. The most critical of these systems are …
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Substrate noise analysis and techniques for mitigation in mixed-signal RF systems
… transients induced by digital circuits inject noise into the common substrate creating substrate noise. Analog circuits lack the large noise margins of digital circuits, thus making them susceptible to substrate voltage variations. This problem is exacerbated at higher frequencies as the …
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Velocity and anisotropy structure of the Icelandic crust - An ambient seismic noise analysis
… wave dispersion could be estimated from ambient noise has introduced new possibilities into the field of seismic imaging, such as performing passive source tomography in regions where it was not previously possible with a dense azimuthal ray path coverage. In this work, I leverage the new …
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Structure Borne Noise Analysis Using Helmholtz Equation Least Squares Based Forced Vibro Acoustic Components
<p>This dissertation presents a structure-borne noise analysis technology that is focused on providing a cost-effective noise reduction strategy. Structure-borne sound is generated or transmitted through structural vibration; however, only a small portion of the vibration can effectively produce …
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Application of Gaussian White Noise Analysis to Modelling of Action Potential Elicitation by Transmembrane Current
Made available in DSpace on 2014-12-12T20:55:04Z (GMT). No. of bitstreams: 1 8008998.pdf: 2798422 bytes, checksum: 4390599c0ff39057c89027fc2a76bf39 (MD5) Previous issue date: 1979
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Data-driven flight procedure simulation and noise analysis in a large-scale air transportation system
Aircraft noise is a growing source of community concern around airports. Despite the introduction of quieter aircraft, increased precision of onboard guidance systems has resulted in new noise impacts driven by overflight frequency effects. Noise issues present a potential barrier to the continued …
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DM EMI Noise Analysis for Single Channel and Interleaved Boost PFC in Critical Conduction Mode
… current ripple in CRM PFC creates huge DM EMI noise, which requires a big EMI filter. The switching frequency of the CRM PFC is variable in half line cycle which makes the EMI characteristics of the CRM PFC are not clear and have not been carefully investigated. The worst case of the EMI noise, …
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Mechanism of Inhibition of Transepithelial Sodium Transport in Frog Skin by Quinine and Quinidine (Noise Analysis, Cgs 4270, Basolateral Membrane)
… agents remains unknown. Studies with fluctuation analysis indicated that the single channel Na('+) currents (i(,Na)) were decreased by quinine and quinidine due most likely to depolarization of apical membrane voltage. Interestingly we observe large increases of the Na('+) channel density (N('A)) …
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Noise analysis of inkjet printers over stages and quality of the job and frequency sources from equipment in laboratory optical trap room
… Additionally, this experiment determined the noise contributors to a laboratory room containing an optical trap. The laser's fan-based cooling system yields frequencies of approximately 270 Hz and 540 Hz in the room, while the room's heater produces frequencies of approximately 110 Hz. The …
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