How to Couple a Full-Wave Simulation to a Ray Tracing Simulation

Andrew Strikwerda January 30, 2017

Learn how to couple full-wave and ray tracing simulations in a model with a nonhomogenous domain around the antenna. Part 4 of a series on multiscale modeling in high-frequency electromagnetics.

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Andrew Strikwerda January 18, 2017

Learn how to couple radiating and receiving antennas in your simulations by using the scattered field formulation. Part 3 of a series on multiscale modeling in high-frequency electromagnetics.

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2 Methods for Simulating Radiated Fields in COMSOL Multiphysics®

Andrew Strikwerda January 12, 2017

2 ways to model radiated fields: the Far-Field Domain node and the Electromagnetic Waves, Beam Envelopes interface. Part 2 of a series on multiscale modeling in high-frequency electromagnetics.

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Introduction to Multiscale Modeling in High-Frequency Electromagnetics

Andrew Strikwerda January 11, 2017

Here’s an introduction to performing multiscale analyses of antennas and communication systems. Part 1 of a series on multiscale modeling in high-frequency electromagnetics.

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Comparing Two Interfaces for High-Frequency Modeling

Andrew Strikwerda May 26, 2016

It is always important to choose the correct tool for the job, and choosing the correct interface for high-frequency electromagnetic simulations is no different. In this blog post, we take a simple example of a plane wave incident upon a dielectric slab in air and solve it in two different ways to highlight the practical differences and relative advantages of the Electromagnetic Waves, Frequency Domain interface and the Electromagnetic Waves, Beam Envelopes interface.

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Model Cables and Transmission Lines in COMSOL Multiphysics

Andrew Strikwerda February 9, 2016

Electrical cables are classified by parameters such as impedance and power attenuation. In this blog post, we consider a case for which analytic solutions exist: a coaxial cable. We will show you how to compute the cable parameters from a COMSOL Multiphysics simulation of the electromagnetic fields. Once we understand how this is done for a coaxial cable, we can then compute these parameters for an arbitrary type of transmission line or cable.

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Should We Model Graphene as a 2D Sheet or Thin 3D Volume?

Andrew Strikwerda August 4, 2015

Within the research community — and on the COMSOL Blog — graphene has been a topic of great interest. The unique properties that make this material so remarkable can also make it challenging to analyze. In simulation, a particularly difficult question to address is whether graphene should be modeled as a 2D sheet or a thin 3D volume. We provide answers to this question in today’s blog post.

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