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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...

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...

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...

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...

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...

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...

Band Gap Analysis of a Photonic CrystalBand Gap Analysis of a Photonic Crystal

This model investigates the wave propagation in a photonic crystal that consists of GaAs pillars placed equidistant from each other. The distance between the pillars determines a relationship between the wave number and the frequency...

Mie Scattering off Plasmonic Nanoparticle and Radar Cross-Section ComputationsMie Scattering off Plasmonic Nanoparticle and Radar Cross-Section Computations

This model demonstrates one of the most basic applications of the RF module: calculations of the differential scattering cross-section, as well as total cross-sections, including absorption, scattering, extinction and radar...

Propagation of a 3D Gaussian Beam Laser PulsePropagation of a 3D Gaussian Beam Laser Pulse

Laser systems are an important application area in modern electronics. There are several ways to generate a laser beam, but they all have one thing in common: the wavelength is determined by the stimulated emission, which depends on...


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