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RF & Microwave Engineering Blog Posts

Designing Cavity Filters for 5G Devices with Multiphysics Modeling

April 13, 2021

From radar and microwave ovens to particle accelerators, RF cavity filters are found in a variety of different application areas. Among them: 5G devices and infrastructure.

2020 Isaac Newton Medal and Prize Awarded to Nader Engheta

December 16, 2020

Get an overview of the Isaac Newton Medal and Prize — and the optical physicist who won this year.

3 Examples of Modeling Transitions for Rectangular Waveguides

October 20, 2020

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.

Modeling Waveguides that Support Multiple Modes 

August 12, 2020

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.

Computational Electromagnetics Modeling: Which Module to Use?

July 28, 2020

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.

Evanescent Component of the Nonparaxial Gaussian Beam

May 12, 2020

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.

Measuring the SAR of a Human Head Next to a Wi-Fi Antenna

April 16, 2020

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.

Which Study Type Should I Use for My Electrothermal Analysis?

January 13, 2020

What’s the best interface to use when implementing electrothermal analyses in COMSOL Multiphysics? We go over the interfaces, study types, and multiphysics couplings for high and low frequencies.


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