Export antenna design to a CAD file

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Vignesh Radhakrishnan 2022-12-31

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https://ww2.mathworks.cn/matlabcentral/answers/1886667-export-antenna-design-to-a-cad-file

评论： Harsh 2023-1-20

Hi,

I am trying to design an antenna using Antenna Designer app and would like to export the antenna I have designed in a format which can be imported into other software such as CST, sim4life etc?

Conversion to stil file does not seem to be very optimum. Is there a way to export it as a CAD model?

Thanks

回答（1 个）

Harsh 2023-1-2

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https://ww2.mathworks.cn/matlabcentral/answers/1886667-export-antenna-design-to-a-cad-file#answer_1139567

Hi Vignesh,

I understand that you are looking for a method to export the antenna design as a CAD model.

You can use stlwrite function to write the antenna design as an STL file. Please feel free to refer to the link below, as it also presents an example for the same.

https://in.mathworks.com/help/antenna/ref/stlwrite.html

Currently, MATLAB does not support exporting the design as any other CAD model.

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Vignesh Radhakrishnan 2023-1-14

Hi Harsh,

Thanks. That works but unfortunately I get an error stating that a triangulation object is needed for stlwrite when I use the pcbstack layers.

Thanks

Harsh 2023-1-20

在 MATLAB Online 中打开

Hi Vighnesh,

I understand the triangulation object error you were facing. I have been able to get the following workaround to resolve the antenna arms separately, such that they can also be written as STL file. Please try the following code.

% Create a vivaldiAntipodal antenna
% Generated by MATLAB(R) 9.13 and Antenna Toolbox 5.3.
% Generated on: 22-Dec-2022 19:28:27
%% Antenna Properties 
antennaObject = design(vivaldiAntipodal, 1500*1e6);
antennaObject.BoardLength = 0.145;
antennaObject.BoardWidth = 0.05;
antennaObject.Height = 0.00158;
antennaObject.StripLineWidth = 0.00025;
antennaObject.OuterTaperLength = 0.135; 
antennaObject.InnerTaperLength = 0.139;
antennaObject.ApertureWidth = 0.015;
antennaObject.GroundPlaneWidth = 0.049;
antennaObject.Substrate.Name = 'Taconic RF-35';
antennaObject.Substrate.EpsilonR = 10;
antennaObject.Substrate.LossTangent = 0.0035;
antennaObject.Substrate.Thickness = 0.00158;
pcb = pcbStack(antennaObject);
top = pcb.Layers{1};
bottom = pcb.Layers{3};
figure,mesh(top,'MaxEdgeLength',2e-3)
[p,t] = exportMesh(top);
tr = triangulation(t(:,1:3),p);
figure,triplot(tr)
stlwrite(tr,'top.stl');
figure,mesh(bottom,'MaxEdgeLength',2e-3)
[p,t] = exportMesh(bottom);
tr = triangulation(t(:,1:3),p);
figure,triplot(tr)
stlwrite(tr,'bottom.stl');