Sir,
I am able to generate the Gerber files of an antenna from CST software for fabrication. But I am not able to generate or create a Gerber file for the board outline for PCB fabrication. Can I design a rectangle in CST with dimensions same as substrate and then generate the Gerber from it?
I am not familiar with CST that much but it is a 3D model simulation software.
Gerber is a tool-layer based script for a flashing, cutting, and drilling machines. These are not directly logically compatible with 3D CAD data. But PCB-oriented software usually has direct gerber export.
So try importing your data to PCB-design software, and generate the gerber code there, after defining all the layers. For a free starter I would offer FreePCB, which can import 2D DXF data, and export what you need.
Just remember that Gerber consists of direct instructions to machine, it does not take possible tolerances, shifts and thresholds into account, which machine management software should handle. So passing a set of layer-by layer &drilling mark DXFs may be a better option. Consult with your workshop
Yes, you can make rectangular PEC layer at z=0, and same you can use for ROUTING the PCB.
CST will generate a gerber file or a dxf file that is the intersection of the working plane with any object in your CST model. You can move the local coordinates around to select the correct plane.
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