A. Pellegrini and F. Costa
ALTRAN Italia, Pisa, Italy
In this paper the propagation of a plane wave in a large lossy medium is presented. The investigated geometry consists in a wedgeshaped lossy dielectric embedded in a lossy material with different electromagnetic properties. The aim of the study is to determine the feasibility of a radar technique for measuring the length of the dielectric wedge. In order to address this problem and to evaluate ...
Transient RF Heating of a Conductive Implant: Coupled Electromagnetic/Thermal Simulation and Experimental Validation
A. Leewood, D. Gross, J. Crompton, S. Yushanov, O. Simonetti, Y. Ding
 MED Institute Inc., West Lafayette, IN, USA
 AltaSim Technologies, Columbus, OH, USA
 Ohio State University, Columbus, OH, USA
The purpose of this work was to establish a reliable radio frequency (RF) heating simulation which directly provides transient temperatures for medical devices with high geometric fidelity. These temporal results of localized temperatures can be used to determine conditions for safety of medical devices in the magnetic resonance (MR) environment. Information from this work will directly benefit ...
Simulation of the Destruction Effects in CMOS-Devices caused by Impact of Fast Transient Electromagnetic Pulses
M. Rohe, S. Korte, and M. Koch
Institute for the Basics of Electrical Engineering and Measurement Science, Leibniz Universität Hannover, Germany
In this paper will be presented how an electronic system and its components will respond in case of an impact of an external electromagnetic pulse (EMP). In the first instance the coupling process of transient electromagnetic pulses into electronic systems will be shown. Out of that the disturbing signal inside the system, which is necessary for the following simulation, will be described ...
S. M. Musa, and M. N. O. Sadiku
College of Engineering, Prairie View A&M University, Prairie View, TX, USA
In this paper, we apply COMSOL Multiphysics, a finite element package, to compute the capacitance of a single centered microstrip line and the capacitance and inductance matrices of coupled multistrip lines. We compared our results with those in the literature such as variational technique, method of moments, finite difference method, Green’s function-integral equation technique, and found them ...
S. Singh, A. Marwaha
Department of Electronics and Communication Engineering, Sant Longowal Institute of Engineering Technology Longowal, Punjab, India
Electromagnetic wave analysis of waveguide has been done in this paper with the help of Finite Element Method (FEM) based COMSOL Multiphysics. The design is further extended by placing conductor on a dielectric slab included in the waveguide to form a shielded microstrip transmission line. The simulated models are analyzed to determine the wave propagation characteristics. The validation is done ...
Ricklefs, U., Luo, H.
FH Giessen-Friedberg, FB EI
Mit FEMLAB 2.x und 3.1 wurden Voruntersuchungen zu zwei Anwendungen versucht. Im ersten Projekt sollte die Möglichkeit geklärt werden, FEMLAB für die Verhaltenssimulation integrierter ASIC-Photodioden einzusetzen und in der zweiten Anwendung sollten spezielle photonische Kristalle untersucht werden.
S. Curet, M. Mazen Hamoud-Agha
GEPEA, UMR 6144, CNRS, ONIRIS, Université de Nantes, Nantes, France
In this study, COMSOL®4.2a is used to model a microwave heating process in a TE10 rectangular waveguide. The sample consists of a small cylindrical Ca-alginate gel (D = 8 mm, H = 10 mm) inoculated with bacteria Escherichia Coli K12. The sample is placed along the microwave propagation direction into the waveguide. Maxwell’s equations and heat transfer are coupled to a microbial inactivation ...
Complex K-Bands Calculation for Plasmonic Crystal Slabs by Means of Weak Formulation of Helmholtz's Eigenvalue Equation
G. Parisi, P. Zilio, F. Romanato
University of Padova, Padova, Italy
We present a Finite Element Method (FEM) to calculate the complex valued k(?) dispersion curves of a photonic crystal slab in presence of both dispersive and lossy materials. In particular the method can be exploited to study plasmonic crystal slabs. We adopt Perfectly Matched Layers (PMLs) in order to truncate the open boundaries of the model, including their related anisotropic permittivity and ...
Dielectric Properties Characterization of Thin-film Samples by using Scanning Near-Field Microwave Microscope (SNMM) and FEMLAB
Huang, S.1, Reeves, M.E.1, 2
1 Department of Physics, George Washington University, Washington
2 Naval Research Laboratory, Washington, DC
Scanning Near-field Microwave microscope represents a novel approach to thin film dielectric property analysis with high resolution. In this technique, a sharp probe tip is brought into close enough proximity to the sample surface that the EM field are well described by the near field theory. The question addressed here is how to determine material parameters (in this case dielectric constant) ...
J. Crompton, S. Yushanov, L. Gritter, and K. Koppenhoefer
AltaSim Technologies, LLC.
Microwave heating is an important process for many commercial, industrial and household applications. In microwave heating applications, the energy is introduced directly into the volume of the material. As a consequence the quality of the process is highly dependent on the uniformity of the electromagnetic field distribution. Thus, developing a uniform electromagnetic field inside the ...