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 15 of 15 for “"Near-Field Coupling"”.
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Near field coupling between elements of a finite planar array of circular apertures
… transforms of the respective aperture electric fields and the solutions to a set of transformed wave equations for the layered region. The result is an expression which is stationary about variations in the assumed aperture electric field distributions. The special case of two circular apertures …
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Optimization of Near Field Coupling for Efficient Power Transfer Utilizing Multiple Coupling Structures
… been limited to a number of options, including near field resonant magnetic coupling. Previous research with mid-range (dâ 4r) wireless power transfer has resulted in coupling efficiencies of close to 40%. In order to increase efficiency in transfer a more directive transmission system was …
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Modeling and Mitigation of EMI from Near-Field Coupling Effects in Front-End Power Supplies
… are often caused by parasitic electromagnetic couplings within the hardware, which create additional propagation paths for high-frequency noise that may not be attenuated by the EMI filter. This dissertation proposes a framework to model and mitigate EMI from capacitive and magnetic …
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An Improved dipole-moment model based on near-field scanning for characterizing near-field coupling and far-field radiation from an IC
… an improved IC radiated emission model based on near-field measurements is proposed. The regularization technique and the truncated SVD method are employed together with the least square method to calculate the dipole moments from the near-field data. This dipole model has clear physical meaning: …
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Probing cell membrane dynamics using plasmon coupling microscopy
… limit length scales in a conventional far-field optical microscope. This approach, which is referred to as plasmon coupling microscopy (PCM), utilizes the distance dependent near-field coupling between noble metal nanoparticle (NP) labels to resolve close contacts on the length scale of …
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Design and Optimization of Multichip GaN Module Enabling Improved Switching Performance
… EMI performance.</p> <p>Moreover, to address the near field coupling issue in a high-density electronics system and to map the emission, an automated near field test setup using a six-axis robotic arm has been developed with very small step size and repeatability producing the desired map with …
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Modeling multi-layer via structure using PEEC method
… RF interference received by an antenna due to near-field coupling using divide-and-conquer based on reciprocity. The proposed methodology fits well with engineering practice, and is particularly suitable for pre-layout wireless system design and planning"--Abstract, page iv.</p>
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Metamaterial enhanced coupling
… and in this thesis I examine several of these coupling mechanisms. After an appropriate discussion of theoretical and experimental tools required for metamaterial study, the thesis turns to the metamaterial substrate and explores the coupling effects of the metamaterial and the substrate …
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Optical hot carrier solar cell: A general method of spectrum management in photovoltaics
… transfer spectrum function can quantify the coupling rate more accurately, especially for the near-field coupling. The hot-luminescence transfer has been investigated in detail using a plasmonic core-shell nanowire illustration, which shows about 4800 times transfer enhancement and an …
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Investigating the Electron Transport and Light Scattering Enhancement in Radial Core-Shell Metal-Metal Oxide Novel 3D Nanoarchitectures for Dye Sensitized Solar Cells
… localized surface plasmon resonance (LSPR) or by near-field coupling between the surface plasmon polariton (SPP) and the dye excited state. Rapid, radial electron collection is of practical significance because it should allow alternate redox shuttles that show relatively fast …
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Exploiting Near Field and Surface Wave Propagation for Implanted Devices
… bandwidth shortcomings of conventional inductive coupling biotelemetry systems for implantable devices, and presents two approaches toward an end-to-end biotelemetry system for reducing the power consumption of implanted devices at increased levels of bandwidth. By leveraging the transition zone …
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A Compact Three-Phase Multi-stage EMI Filter with Compensated Parasitic-Component Effects
With the advent of wide bandgap (WBG) semiconductor devices, the electromagnetic interference (EMI) emissions are more pronounced due to high slew rates in the form of high dv/dt and high di/dt at higher switching frequencies compared to the traditional silicon technology. To comply with the …
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Magnetic field directed self-assembly of gold Pickering emulsion for preparing patterned film.
… frequency (RF) antennas and many others. The linear array spacing and width of gold strips has been shown to increase the local intensity through near-field coupling with diffracted electromagnetic waves. This rise in local charge boosts vibrational energies of molecules in close-surface contact …
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Radio frequency interference (RFI) modeling of complex modules in mobile devices and system-level modeling for transient ESD simulation
… for phase resolved scanning over random fields generated by multiple uncorrelated stochastic sources. This method can separate the field contribution of each noise source and resulting field patterns as if the out-of-interest sources were turned off. The scanned data can be used for …