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 33 for “"Electromagnetic Simulation"”.
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Web-based electromagnetic simulation
Electromagnetic simulators have traditionally been used as back-end analysis tools to verify the results of circuit simulators. They work by accurately modeling the physical effects in a variety of structures ranging from transmission lines to planar circuits.Most of electromagnetic simulation …
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Structural-Electromagnetic Simulation Coupling and Conformal Antenna Design Tool
… While there exist a multitude of physics-based simulation tools to determine the effects of the array on the aircraft performance, existing tools are not sufficient for generating deformed arrays necessary for determining in-flight array performance. In response to this need, a computer tool for …
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Fast Large-Scale Electromagnetic Simulation of Doubly Periodic Structures in Layered Media
<p>This work focuses on the electromagnetic simulation of doubly periodic structures embedded in layered media, which can be commonly found in extreme ultraviolet (EUV) lithography, metasurfaces, and frequency selective surfaces. Such problems can be solved by rigorous numerical methods like …
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PARAMETERS THAT AFFECT PARALLEL PROCESSING FOR COMPUTATIONAL ELECTROMAGNETIC SIMULATION CODES ON HIGH PERFORMANCE COMPUTING CLUSTERS
… run faster. However, for Computational ElectroMagnetics (CEM) software developers, this change was not an obvious benefit – it appeared to be a detriment. Developers were challenged to find a way to correctly utilize the advancements in hardware so that their codes could benefit. The …
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3D Electromagnetic Simulation Tool Exposure for Undergraduate Electrical Engineers: Incorporation Into an Analog Filters Course
… comes the need for 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 …
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Parallel FDTD Electromagnetic Simulation of Dispersive Plasmonic Nanostructures and Opal Photonic Crystals in the Optical Frequency Range
… cell efficiency for their forward scattering and electromagnetic field enhancement properties. Photonic crystals are used for example in low threshold lasers, biosensors and compact optical waveguide. The numerical simulation of complex problems in the field of plasmonics and photonics is …
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Design and Analysis of L-Band Reconfigurable Liquid-Metal Alloy Antennas
… the liquid metal from various channels. After simulations were performed in an electromagnetic simulation software, proof-of-concept models were built, tested, and compared to the simulations to verify the results.
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Implantable electrode structures and their RF effects in MRI machines
… safety. Designs are first modelled with electromagnetic simulation software then experimentally proven inside of a gelled saline phantom within a 3T MRI machine. A lab-based measurement method is also established to enable rapid low-cost testing of prototype lead designs.
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Millimeter Wave Radar Object Detection Through Frequency Selective Surfaces
… surfaces are designed and simulated in 3-D electromagnetic simulation software, High Frequency Structure Simulator (HFSS). The frequency selective surfaces are fabricated on 127μm thick FR4 dielectric. The 8 GHz frequency selective surface demonstrates bandpass center frequency at 8.12 GHz. …
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Dielectric Characterization: A 3D EM Simulation Approach
A new 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 …
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Radio propagation in fire environments.
… show a strong interaction of fire with electromagnetic propagation. The next section develops electromagnetic modelling of the fire environment. A model of the combustion induced plasma is developed, as well as a refractive index model of the surrounding atmosphere of a fire. Simple …
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A surface integral equation method for dielectrics at low frequencies
… are much smaller than the wavelength of the electromagnetic waves, 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 …
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Design of microstrip ultra wide band antenna with two notch filters for wireless communication
… configurations. The antenna is simulated using electromagnetic simulation software CST Studio Suite. The obtained results were experimentally validated and good agreement was observed.
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Design and Fabrication of Inverter and Rectifier Modules for Indirect Matrix Converter Applications
… optimization is presented based on the electromagnetic simulation results extracted from the Ansoft Q3D extractor. The thermal analysis for the modules is performed using Dassault system SolidWorks 3D CAD tool to obtain optimized designs under working conditions. The IMC consists of both …
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Crosstalk and Signal Integrity in Ring Resonator Based Optical Add/Drop Multiplexers for Wavelength-Division-Multiplexing Networks
… components leads to potential ‘Optical/Photonic’ electromagnetic compatibility (EMC) and signal integrity (SI) issues due to the close proximity of optical components and waveguides. Optical EMC issues are due to backscatter, crosstalk, stray light, and substrate modes. This thesis has focused on …
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Modeling of conductor surface roughness effect
… inside a conductor and the subsequent effect on electromagnetic properties of the conductor. The existence of surface roughness on a conductor disturbs current flow and results in a higher than usual ohmic loss. This, in turn, impacts the performance of a variety of high-frequency interconnect, …
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RF Models for Active IPEMs
… of 1MHz through 30MHz. Based on the classic electromagnetic field theory, the calculating equations of DC and AC parameters for a 3D conducting structure are derived. The influence of skin effect and proximity effect on AC resistances and inductances is also investigated at high frequencies. …
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Electromagnetic Modeling of the Power Distribution Network in Packaged Integrated Circuits Using a Hybrid Extended Segmentation Method
… modular extended segmentation procedure for the electromagnetic modeling of the power distribution network in packaged integrated circuits. The fundamental blocks that build the power distribution network are identified and modeled individually. An integral equation approach is employed for the …
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A finite element approach for the implementation of magnetostrictive material terfenol-D in automotive CNG fuel injection actuation
… (FEMM) and ANSYS for 2D axisymmetric magnetic simulation. The magnetic simulations were performed in order to determine the coil-circuit parameters and the magnetic field strength to achieve the required magnetostrictive strain, and consequently, the injector needle lift. The FEMM magnetic …
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Effective Methods To Reduce The RF-Induced Heating For Medical Implants In MRI
… to reduce the RF-induced heating. Both simulations and experiments demonstrated that introducing proper capacitive structures to the external fixation device could reduce the temperature rise by more than 95% at both 1.5 T and 3 T. An equivalent circuit was developed to illustrate the …
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