Showing result: 1 - 10 of 36
RF Module
-
RF 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 structures are also finding applications in radar and optical...
Read more about this model -
RF Introductory Tutorial: Step by Step Modeling of a Coil
This is an introductory tutorial that shows how to model RF coils using COMSOL. RF coils are important in numerous applications ranging from wireless technology to MRI scanning equipment.
This examples demonstrates the different modeling steps that are important when analyzing RF coils: f...
Read more about this model -
RF 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 methods shown here.
This example works through sev...
Read more about this model -
RF 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 antennas, filter design, and MRI systems.
This exampl...
Read more about this model -
Microwave 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 the heat redistributes in the foodstuff.
Read more about this model -
Mie 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 cross-sections.
It also illustrates the use of symmetry planes in e...
Read more about this model -
Thermal Drift in a Microwave Filter Cavity
Microwave filters are used to eliminate unwanted frequency components in the output from microwave transmitters. They are typically inserted between a power amplifier and an antenna. The amplifiers are nonlinear and produce harmonics that must be eliminated with filters that have a rather narrow pa...
Read more about this model -
Absorbed 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 amount of radiation that human tissue absorbs.
The human head...
Read more about this model -
Balanced 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 radiation frequency, antenna impedance, and radiation pattern. It...
Read more about this model -
Microwave 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 heating.
The purpose of this model is to compute the radiation...
Read more about this model
