Did you know the extent of advanced filter topologies and implementations you can attain with Filter Designer 3D ? We’re talking extended boxes, non-resonating nodes, split-rings, dual-mode cavities, SIW, etc. Here’s a few examples to tickle the imagination!

Of course, you can always create models with your own approach and just optimize it using the advanced surrogate extraction (provided by FD3D) and the trust-region framework optimizer.

Give it a try in CST Studio Suite 2026 and let us know what you would like to design with this tool.