M. Surita, M. Patel, and S. Marwaha
 Department of Electrical & Instrumentation Engineering, SLIET , Longowal (Deemed University), Punjab
 ABES Engineering College, Department of Electronics and Communication Engineering, Ghaziabad
The purpose of this paper is to illustrate the microwave coagulation therapy (MCT) that can be used mainly for the treatment of hepatocellular carcinoma. In this treatment invasive technique are used in which thin microwave coaxial antenna is inserted into the tumor and the microwave energy heats up the tumor to produce the coagulated region including the cancer cells. We have to heat the cancer ...
A finite–element simulation study of the complex effective permittivity of two-phase random composite materials
Laboratoire d'Electronique et Systèmes de Télécommunications, Université de Bretagne Occidentale, Brest, France
In the current work we introduce a finite-element method (FEM) for calculating the effective permittivity of macroscopically inhomogeneous media. Specifically, we consider two-dimensional (2d) two-phase heterostructures consisting of hard circular disk equilibrated distributions. The hard-disk distribution has been chosen as the reference system since it is one of the simplest idealized models ...
J.C. Crompton, K.C. Koppenhoefer, and S.Y. Yushanov
AltaSim Technologies, LLC, Columbus, Ohio, USA
This paper presents the solution of a transient electromagnetic problem using COMSOL Multiphysics. The paper also presents a closed-form solution of a transient electromagnetic dipole. The computational solution compares well with a closed-form solution for this problem. This work implements Maxwell’s equations in the RF module and optimizes solver parameter settings to resolve the transient ...
Theoretical Study of Phase and Amplitude Characteristics of Microwave Coplanar Delay Line Containing Thin Ferroelectric Layer
V. Nikolaevtsev, S. Yankin, S. Suchkov, D. Suchkov, A. Litvinenko
Saratov State University, Saratov, Russian Federation
Joint International Laboratory LICS/LEMAC, IEMN UMR CNRS 8520, EC Lille, France
We theoretically studied the microwave coplanar line of different geometry based on MgO substrate with a thin (30 nm) ferroelectric layer under the external electric field using the environment of 3D modeling in COMSOL Multiphysics®, RF Module, Frequency Domain. Frequency dependence of delay line coefficient S21 was obtained. Sizes of the microstrip and the gap between the strip and the ground ...
S. C. Hegde
VIT University, Vellore, Tamil Nadu, India
The coaxial cable is one of the most commonly used bandwidth limited signal transmission line.Dispersion is a signal distortion phenomenon which arises due to frequency dependence of phase velocity of signal components. This phenomenon was explained through time domain approach by studying time taken by signals of various frequencies to propagate through the cable, which eventually may cause ...
C. Moosmann, G. Sigurdsson, K. Dopf, M. D. Wissert, H.-J. Eisler, and U. Lemmer
Light Technology Institute
Karlsruhe Institute of Technology
Nanoantennas – nanometer sized gold structures resonant at optical wavelengths have interesting properties for many applications. For numerical simulations of such structures simplified geometries are usually considered. However the fabricated shapes still differ significantly from perfect geometries and such structures are sensitive to geometrical changes. Here, we investigate how the ...
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.
Effect of Antennae Polarization Relative to Tunnel Orientation on Electromagnetic Wave Scattering due to Underground Tunnels
A. Farid, and T. Raza
Civil Engineering, Boise State University, Boise, Idaho, USA
Illegal immigrants and smugglers frequently use underground tunnels to avoid border security and checkpoints. In addition, the threat of international terrorism has recently made the effort to detect tunnels a national security priority. No single technology and sensing modality is capable of detecting tunnels in all heterogeneous soils environments. The goal of this research is to study and ...
M. Mruczkiewicz, M. Krawczyk, V.K. Sakharov, Yu. V. Khivintsev, Yu. A. Filimonov, S. A. Nikitov
Nanomaterials Physics Division, Faculty of Physics, Adam Mickiewicz University, Pozna?, Poland
Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences (Saratov Branch), Saratov, Russia; Laboratory “Metamaterials”, Chernyshevsky Saratov State University, Saratov, Russia
Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow, Russia; Laboratory “Metamaterials”, Chernyshevsky Saratov State University, Saratov, Russia
FMR spectra of the periodic microstructures (one-dimensional magnonic crystals, 1D MCs) were obtained using COMSOL with use partial differential equation interface. Results of these calculations were successfully compared with an experimental data for Damon-Eshbach (DE) and Backward-Volume (BV) geometries. The presented tool allows to analyze periodic structures with various geometries and ...
P. Kumar , S. Kalra, A. Marwaha
Department of Electronics and Communication Engineering, Sant Longowal Institute of Engineering Technology Longowal, Punjab, India
The optimized design of a waveguide applicator has been proposed for superficial microwave hyperthermia using COMSOL Multiphysics 3.5a. In microwave hyperthermia cancer treatment body tissue is exposed to high temperatures using external and internal heating devices. Non-Invasive or external hyperthermia is used to treat tumors that are in or just below the skin (superficial). Non-invasive ...