PREPROCESSING FILE PROBLEM

[ljeft]

HELLO
I just started to learn meep, I am trying to import .stp antenna model for simulation, but I only saw the tutorial of importing GDSII in the document, how to import. stp model is still a problem

[stevengj]

Meep doesn't implement a feature for STP files. You will have to find something to convert it to GDSII, or re-implement the structure yourself.

[stevengj]

(If you mean STL, not STP, then there is https://www.artwork.com/gdsii/stl2gds/index.htm and probably other tools)