研究開発におけるマルチフィジックスシミュレーションの具体例

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COMSOL コンファレンス 2020 論文集を見る

RF and Microwave Engineeringx

Analysis of a Planar Inverted-F Mobile Handset Antenna with Reduced Radiation Towards the Human Head

C. Anandan[1]
[1]Cochin University of Science and Technology, Cochin, Kerala, India

This paper deals with the simulation and analysis of SAR and temperature distribution induced by a Planar Inverted-F Antenna on human head model using COMSOL Multiphysics® software. The goal of this paper is to compare the SAR and temperature distributions of omni-directional PIFA with ... 詳細を見る

Low Cost All Optical Swept Source for Optical Communication Applications

J. T. Andrews[1], S. Chaurasiya[1], O. P. Chaudhary[1], D. Agarwal[1]
[1]National MEMS Design, Department of Applied Physics, Shri G S Institute of Technology & Science, Indore Madhya Pradesh, India

By introducing a periodic modulation in a waveguide, it is possible to create an interaction between forward-traveling and backward-traveling modes of an optical waveguide. Bragg grating may be a one dimensional diffraction grating which diffracts light from the forward-traveling mode ... 詳細を見る

Tunable Fano-Resonance in Terahertz Metamaterials

B. R. Sangala[1], H. Surdi[1], P. Deshmukh[1], A. V. Gopal[1], S. S. Prabhu[1], G. Rana[2]
[1]Tata Institute of Fundamental Research, Mumbai, Maharashtra, India
[2]Indian Institute of Technology Bombay, Mumbai, Maharashtra, India

Terahertz radiation (THz) is defined to have frequencies from 0.1-10 THz (1 THz=1e12 Hz). This radiation lies between microwave and infrared radiations in the electromagnetic spectrum. Metamaterials are designed periodic materials that show exotic properties to light and sound. ... 詳細を見る

Dispersion Analysis in Coaxial Cables at High Frequencies

S. C. Hegde[1]
[1]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 ... 詳細を見る

Commercial Special Fibers for Sensing Applications

G. Latha[1], P. Nair[1]
[1]SSN College of Engineering, Chennai, Tamil Nadu, India

In a solid core PCF, structural parameters and the number of rings in the cladding region decide confinement losses, dispersion coefficients as well as bending losses. This paper evaluates some of commercially available solid core photonic crystal fibers. The dispersion coefficients and ... 詳細を見る

Wireless Power and Communications for Implantable Biosensors

C. Romero[1], M. Mujeeb-U-Rahman[1]
[1]California Institute of Technology, Pasadena, CA, USA

Implantable biosensors have the potential to revolutionize the healthcare industry by allowing patients and their health care providers to continuously monitor blood pH levels, pCO2, proteins, metabolites, and a wide variety of other biomolecules. These devices need to operate completely ... 詳細を見る

Impact of a 3D EM Model Configuration on the Direct Optimization of Microstrip Structures

Z. Brito-Brito[1], J. E. Rayas-Sánchez[1], J. C. Cervantes-González[2], C. A. López[2]
[1]The Jesuit University of Guadalajara. Dept. of Electronics, Systems and Informatics, Jalisco, México
[2]Intel Guadalajara Design Center, Jalisco, México

The EM optimization of a coarsely discretized model of a microstrip band-pass filter implemented in COMSOL Multiphysics® was realized using two different model configurations. We presented a systematic methodology to find an appropriate 3D EM model configuration on a direct EM ... 詳細を見る

Theoretical Study of Phase and Amplitude Characteristics of Microwave Coplanar Delay Line Containing Thin Ferroelectric Layer

V. Nikolaevtsev[1], S. Yankin[2], S. Suchkov[1], D. Suchkov[1], A. Litvinenko[1]
[1]Saratov State University, Saratov, Russian Federation
[2]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 ... 詳細を見る

Optical Forces and Torques Acting on Non-spherical Metallic Nanoparticles

M. Siler[1], O. Brzobohaty[1], V. Karasek[1], P. Zemanek[1]
[1]Inst. Scientific Instruments of the ASCR, Brno, Czech Republic

Metallic nanoparticles (NPs) are nowadays used in various areas of biology, chemistry or physics. Focused laser beams, optical tweezers, may be used to manipulate such NPs. However, experimental studies showed that there is a discrepancy between their predicted and observed behavior. ... 詳細を見る

Simulation of Light Coupling Reciprocity for a Photonic Grating

V. Kivijärvi[1], M. Erdmanis[1], I. Tittonen[1]
[1]Aalto University, Department of Micro- and Nanosciences, Espoo, Finland

SOI (Silicon on Insulator) technology utilizes silicon components on SiO2 layer. Propagating electric field distribution in a SOI waveguide is called mode of the waveguide. Photonic gratings are formed by etching grooves on the top of a waveguide. Gratings can operate in two directions. ... 詳細を見る