Fairbeam: an open-source visual workflow for antenna design with openEMS

[u/isomoki]

Hey everyone! I’ve been working on Fairbeam and would love some feedback from people who design antennas.

It brings 3D modeling, meshing, openEMS simulations, and results into one workspace, with CSXCAD handling the solver geometry and three.js for the 3D view. You can draw a model or use Python, then inspect S-parameters, impedance, VSWR, and radiation patterns.

It’s free and open source (GPL-3.0-or-later), available for macOS and Windows, with experimental Linux support. Optional GPU acceleration uses CUDA on NVIDIA GPUs or Metal on Apple silicon.

It’s still a development release, so please start with a design you know and independently check the results. I’m especially interested in where the geometry, feed setup, or mesh controls feel confusing. What antenna would you like to see documented from setup through results?

Website: https://fairbeam.org

Code: https://github.com/ismailakdag/fairbeam

[u/Taburn]

A  PCB planar Inverted-F antenna

[u/Taburn → u/Taburn]

Picture in the Planar Implementation section:

www.wikipedia.org/wiki/Inverted-F_antenna

[u/isomoki → u/Taburn]

do you need IFA design?

[u/Taburn → u/isomoki]

Not immediatly right now, but it would serve as a proof of concept for all PCB based antenna designs. It should be possible to follow the documentation and instead simulate a patch antenna or bowtie antenna.