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 23 for “"EM simulation"”.
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Dielectric Characterization: A 3D EM Simulation Approach
… is presented that relies upon 3D electromagnetic simulation results to characterize the complex permittivity of homogeneous dielectric materials. By modeling the test fixture and obtaining a set of simulated S-parameters through an iterative solution process, the dielectric constant and loss …
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3D Electromagnetic Simulation Tool Exposure for Undergraduate Electrical Engineers: Incorporation Into an Analog Filters Course
… engineers knowledgeable in 3D electromagnetic (EM) simulation of high-frequency circuits. To give electrical engineering students a better understanding of the behavior of electromagnetic fields, experiments including the use of 3D EM simulation software were proposed. Most students get lost in …
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Rf Low Pass Filter Design And Fabrication Using Integrated Passive Device Technology
… substrate has been utilized to make the LPF. Schematic simulation and electromagnetic simulations are extensively used in the design process. EM simulation is used in the selection of layout design and processing parameters for design optimization of both the inductors and IPD harmonic filters. …
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Effective design of multiplexing network for applications in communications satellites
… are widely used in satellite communication systems. Their performances, such as the insertion loss and rejection between channels, are extremely critical. This research aims at effective design of multiplexing networks for applications in communication satellites exploring different design …
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Analysis of a composite dielectric-ferrite loaded resonator using the transmission line model with application to a tunable dual mode bandpass filter
… maximum tuning range. Through electromagnetic (EM) simulations and laboratory experiments, tuning of the filter passband by 20 MHz is demonstrated. This investigation focuses on the design of a bandpass resonator using a combination of dielectric-ferrite material layers. An initial …
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Electromagnetic modeling of hot-wire detonators using analytical and numerical methods with comparison to experiment
The electromagnetic (EM) characteristics of hot-wire detonators are determined in order to quantify more precisely their response to EM illumination. The analyses include a comprehensive study of detonators physical characteristics, which is then used to model detonators using transmission line …
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Non-Destructive Testing of metallic structures based on electromagnetic computational methods
… 2018 to 2021 and focuses on electromagnetic (EM) computational methods in the field of non-destructive testing (NDT).<br/><br/>Conductive samples affect the electromagnetic field generated by coils with alternating induced currents. Referring to eddy current effects, materials with different …
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Transient Electromagnetic Analysis for Microstrip Structures Based on Time Domain Integral Equation Method
… techniques for time domain electromagnetic (EM) simulation have been receiving increasing attention. This thesis focuses on time domain integral equation methods, also known as time domain method of moments (TD-MOM), for analyzing scattering and radiation problems. TD-MOM schemes are applied …
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Investigation of system-level ESD-induced failures
… that can adversely impact the operation of systems. ESD is a short duration, high current stress which can cause the permanent failure of a system or temporary glitches in a system. Soft failures include any recoverable system malfunction, from resets to loss of stored data. They can be caused …
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Enhancing Understanding of Discrete Event Simulation Models Through Analysis
<p>Simulation is used increasingly throughout research, development, and planning for many purposes. While model output is often the primary interest, insights gained through the simulation process can also be valuable. Insights can come from building and validating the model as well as analyzing …
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Predictive transient circuit simulations of charged device model ESD events in system in package chips
… This thesis shows that three-dimensional (3D) EM simulation based package models may not be necessary, and that reasonably accurate results can be obtained using a simple 2D package extraction method. A method to model the on-die circuits and parasitic resistances of the power/ground busses is …
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Fully Integrated Wireless Power Transfer System For Biomedical Applications
… the feasibility of a fully integrated WPT system that is capable of wirelessly providing milliwatts of power at centimeter distances. We present a closed form analytical solution for the optimum load that achieves the maximum possible power efficiency under arbitrary input impedance conditions …
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Toward Nonparametric Propensity Score Estimation With Guaranteed Covariate Balance
<p><em> Establishing clear causality between exposures and outcomes is often complicated </em><em>by confounders in observational studies, which leads to imbalance in covariate distributions </em><em>between treatments and biased treatment effect inference. The propensity score </em><em>(PS) has …
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Effective modeling of advanced filters and multiplexing networks
… are widely used in all types of electronic systems. This research focuses on advanced filters and multiplexers for applications in communication satellites with stringent requirements and specifications. Conventional modeling techniques are typically either based on fast but inaccurate circuit …
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Power Transmission Loss Due to Periodic Loading In Multi-Gigabit Data Signaling Interconnects
… interconnect medium in current computer systems. Silicon transistor technology is advancing at a pace predicted by Moore's law. Moving data faster on PCBs will thus need increased signal rates in the near future; signaling rates on PCB materials will need to reach the Multi-Gigabits regime …
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Design of a Highly Linear 24-GHz LNA
The increasing demand for high data rate devices and many applications in short range high speed communication, attract many RF IC designers to work on 24-GHz transceiver design. The Federal Communication Commission (FCC) also dedicates the unlicensed 24-GHz band for industrial, science, and …
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Novel narrowband microstrip filters for wireless communications systems
… in next generation wireless communication systems. Several novel microstrip bandpass filter structures have been introduced that meet the stringent requirements for high-performance (shaip-cutoff frequency response, low insertion-loss, high return-loss, and high out-of-band isolation), compact …
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Design of Microwave Front-End Narrowband Filter and Limiter Components
… novel bandpass filter structures to protect systems exposed to damaging levels of electromagnetic (EM) radiation from intentional and unintentional high-power microwave (HPM) sources. This is of interest because many commercial microwave communications and sensor systems are unprotected from high …
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Models and methods for power monolithic microwave integrated circuits
… efficient, and easily extracted from measurements or device simulators. Empirical models of active electron devices, which are based on actual device measurements, do not provide a detailed description of the electron device physics. However they are numerically efficient and quite accurate. …
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On-chip Spiral Inductor/transformer Design And Modeling For Rf Applications
… can improve its performance, but the improvement is limited by selected technology. Inductor performance is bounded by the thin routing metal and small distance from lossy substrate. On the other hand, the in-accurate inductor modeling further limits the optimization process. The on-chip …
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