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RF Introductory Tutorial: Step by Step Modeling of a Periodic StructureRF Introductory Tutorial: Step by Step Modeling of a Periodic Structure

This is an introductory tutorial that shows how to model periodic structures using the COMSOL RF Module. Periodic structures such as gratings and etalons are widely used in optoelectronics and as filters. Periodic metamaterial...

Balanced Patch Antenna for 6 GHzBalanced Patch Antenna for 6 GHz

Patch antennas are compact and easy to fabricate. The layout of the patch and the properties of the printed circuit board determine the radiation pattern. This model is a full 3D simulation of a patch antenna. It finds the optimum...

Microwave OvenMicrowave Oven

This is a model of the heating process in a microwave oven. The distributed heat source is computed in a stationary, frequency domain electromagnetic analysis followed. This is followed by a transient heat transfer simulation showing how...

RF Introductory Tutorial: Step by Step Modeling of Microwave HeatingRF Introductory Tutorial: Step by Step Modeling of Microwave Heating

This is an introductory tutorial that shows how to model RF heating using COMSOL. RF heating occurs whenever an electromagnetic wave interacts with matter. Typical areas of interest include modeling of microwave ovens, cell phone...

Microwave Heating of Cancer TumorMicrowave Heating of Cancer Tumor

Electromagnetic heating is ideally suited for modeling in COMSOL Multiphysics. This model shows the area of Hyperthermic Oncology but the modeling issues and techniques are generally applicable to any problem involving electromagnetic...

Second Harmonic Generation of a Gaussian BeamSecond Harmonic Generation of a Gaussian Beam

Laser systems are an important application area in modern electronics. With nonlinear materials it is possible to generate harmonics that are an even multiple of the frequency of the laser light. This model shows how a second harmonic...

Stress-Optical Effects in WaveguideStress-Optical Effects in Waveguide

Planar photonic waveguides in silica (SiO2) have a great potential for use in wavelength routing applications. The major problem with these kinds of waveguides is birefringence. Anisotropic refractive indices result in fundamental mode...

Waveguide AdapterWaveguide Adapter

This model demonstrates microwave propagation in the transition from an elliptical to a rectangular waveguide. The aim is to keep the energy losses for the operating frequencies at a minimum. In this study, we consider a wave...

Absorbed Radiation (SAR value) in a Human HeadAbsorbed Radiation (SAR value) in a Human Head

The increasing use of wireless equipment has also increased the amount of radiation energy to which human bodies are exposed. A common property that measures absorbed energy is the SAR value, (specific absorption rate) to determine the...

RF Introductory Tutorial: Step by Step Modeling of a Dipole AntennaRF Introductory Tutorial: Step by Step Modeling of a Dipole Antenna

This is an introductory tutorial that shows how to model a dipole antenna using the COMSOL RF Module. A dipole antenna is one of the simplest antenna structures, and many radiating structures can be modeled in similar ways to the...


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