Pryor Knowledge Systems, Bloomfield Hills, MI, USA
The waveguide device modeled here specifically demonstrates the exploration of a small, but very important, subset of components of the family of microwave hardware devices designed to facilitate the optimized transfer of power from the generating source to the consuming load. Each of those components is called, in electronics terminology, a Tuned Stub. A stub is a length of transmission line ...
G.G. Gentili, S. Pietralunga, M. Bolzoni
Politecnico di Milano, Dipartimento di Elettronica e Informazione, Milano, Italy
INFN-CNR, Istituto di Fotonica e Nanotecnologie, Milano, Italy
Grating-assisted optical coupling into long-range modes of strip plasmonic waveguides is analyzed by a 3D numerical simulation with COMSOL Multiphysics. We used the RF Module and its scattering formulation. A comparison with results obtained using the common 2D approximated analysis is shown for the case of 1D grating coupler and input Gaussian beam. Excited diffracted modal field distribution is ...
K. Tarnowski, W. Salejda
Institute of Physics, Wroclaw University of Technology, Wroclaw, Poland
Currently there is much interest in electromagnetic metamaterials [1-9]. In our work we have focused on design of tunable metamaterial which can be made within available technology. In proposed design we use metallic split-ring resonators and thin-wires (Figure 1). Moreover we have decided to introduce nematic liquid crystal layer in design to obtain tunability (Figure 2). One can control ...
Topographic Effects on Radio Magnetotelluric Simulations on Levees: Numerical Modeling for Future Comparison With Fields Results
R. Duval, C. Fauchard, R. Antoine
ERA23-IFSTTAR, Laboratoire des Ponts et Chaussées de Rouen, CETE-Normandie Centre, France
We study the topography influence of levees on the electric resistivity signal obtained with the Radio-Magnetotelluric method. Field measurements have been modeled with COMSOL, using the AC/DC and RF Modules. A levee situated in Orléans along the Loire river (France) has been considered in order to design a model tacking account of the skin depth and the incident wavelength, keeping a constant ...
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 ...
Coupled Electromagnetic and Heat Transfer Simulations for RF Applicator Design for Efficient Heating of Materials
C. Thiagarajan, J. Anto
ATOA Scientific Technologies Pvt Ltd, Whitefield, Bangalore, Karnataka India.
Conventional heating of material wastes energy during heating due to inherent radiation, conduction and convection based heating mechanism. Alternate efficient heating methods are actively researched for improved efficiency. Radio frequency based electromagnetic heating is increasingly used for efficient heating in place of conventional heating. This requires coupling of electromagnetic and heat ...
K. M. V. Swamy, B. G. Sheeparamatti, G. R. Prakash 
Department of Electronics and Communication, Basaveshwara Engineering College, Bagalkot, Karnataka, India
This study is performed to know which central plate geometry is best suited for electrostatically actuated switch. The simulation is carried out in COMSOL Multiphysics, where user is free to model the geometry without depth knowledge about geometrical dependency of electrostatic. The study of the centrally suspended geometrical models such as circle, square and rectangle suspended by two short ...
H.K. Yang, S.C. Tseng
Institute of Mechanical Engineering, National Yunlin University of Science Technology, Taiwan
In order to perform rust surface treatment for stainless wires, we proposed an electrolyzing equipment to do so. It has the following advantages: safer, cheaper and less environmental pollution. To study the performance of the electrolyzing process, numerical simulation for electric fields will be conducted by using COMSOL Multiphysics software. Taguchi methods was also used to obtain better ...
Visible Spectral Reflectance Analysis in a Metal-Insulator-Metal (MIM) Multilayer with COMSOL Multiphysics
Y. Oshikane, K. Murai
Osaka University, Suita City, Osaka, Japan
We are developing a reflective metal-insulator-metal (MIM) filter with narrow band absorption. In the MIM structure, the interaction between subwavelength multilayer and visible light, and the resultant surface plasmon resonance (SPR) in specific illumination conditions must be understood. Such electromagnetic field interactions have been analysed using COMSOL Multiphysics and RF Module.
Shinshu University, Matsumoto City, Nagano, Japan
Electromagnetic waves in the terahertz (THz) region may be useful for non-destructive imaging and biosensing technology. This presentation shows the example of our research aimed at the development of application in the THz region. The result of comparing the FDTD method and COMSOL Multiphysics is demonstrated in the investigation of metamaterial and the photoconductive antenna.