Blog Posts Tagged RF Module
![](http://cdn.comsol.com/wordpress/sites/1/2019/11/COMSOL_Blog_OG_COMSOLNow_resized-245x195.png)
2020 Isaac Newton Medal and Prize Awarded to Nader Engheta
Get an overview of the Isaac Newton Medal and Prize — and the optical physicist who won this year.
![](http://cdn.comsol.com/wordpress/sites/1/2020/10/COMSOL_Blog_ModelImgs_BandWaveguide_ThumbnailImg.png)
3 Examples of Modeling Transitions for Rectangular Waveguides
Waveguide to planar, coaxial to waveguide, and rectangular to elliptical: These 3 different transitions for rectangular waveguides can be modeled using COMSOL Multiphysics® and the RF Module.
![](http://cdn.comsol.com/wordpress/sites/1/2020/08/COMSOL_Blog_ModelImgs_Waveguide_ThumbnailImg.png)
Modeling Waveguides that Support Multiple Modes
2 ways you can model a waveguide that supports multiple modes: add a PML that can be used to absorb any modes, or explicitly add ports for each possible mode.
![](http://cdn.comsol.com/wordpress/sites/1/2013/09/COMSOL_Blog_ModelImgs_pifaHandheld_ThumbnailImg.png)
Computational Electromagnetics Modeling: Which Module to Use?
If you work with a particular electromagnetic device or application area, you might be wondering which module in the COMSOL product suite is right for you. Keep reading for a comprehensive intro.
![](http://cdn.comsol.com/wordpress/sites/1/2020/05/COMSOL_Blog_ModelImgs_BGFieldComparison_ThumbnailImg.png)
Evanescent Component of the Nonparaxial Gaussian Beam
The evanescent component of the nonparaxial Gaussian beam background field is available as a feature in the Wave Optics and RF modules as of COMSOL Multiphysics® version 5.5.
![](http://cdn.comsol.com/wordpress/sites/1/2020/04/COMSOL_Blog_ModelImgs_SARWiFi_ThumbnailImg.png)
Measuring the SAR of a Human Head Next to a Wi-Fi Antenna
Many wireless devices include antennas that expose consumers to RF energy. Designers of these devices need to understand the health implications caused by electromagnetic exposure, such as SAR.
![](http://cdn.comsol.com/wordpress/sites/1/2020/04/COMSOL_Blog_ModelImgs_ScattererSubstrate_ThumbnailImg.png)
Modeling the Scattering of Light Off of an Object on a Substrate
A common modeling scenario in wave electromagnetics: computing the scattering of light off of a structure patterned on top of a uniform dielectric substrate.
![](http://cdn.comsol.com/wordpress/sites/1/2020/03/COMSOL_Blog_ModelImgs_HelmholtzCoil_ThumbnailImg.png)
What Is Gauge Fixing? A Theoretical Introduction
Investigate the consequences of Helmholtz’s theorem when applied to Maxwell’s equations, and when using scalar and vector potentials to represent physical fields.