Adding Variables
Define variables to create a parametric model.
A model is parametric when it is created using variable expressions. When a variable expression is modified, any items dependent on that variable are re-evaluated and automatically updated. It is the recommended construction method when creating a model, but not compulsory.
Defined variables are stored as part of the model in the .cfx file.
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Open the Create Variable dialog using one of the
following workflows:
- On the Construct tab, in the Define group, click the
Add Variable icon.
- On the model tree, a right-click context menu is available on Variables. From the
list, select Add Variable.
Figure 1. The model tree (Construction tab).
- On the model tree, click the
icon. From the drop-down list, select Add Variable.
Figure 2. The drop-down list available in the model tree.
- Press # to use the keyboard shortcut.
- On the Construct tab, in the Define group, click the
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Create the following variables:
Name Expression Unit patch_size 18.8 mm chamfer_d 4.3 mm feed_pos -6.4 mm substrate_w 45 mm substrate_d 45 mm substrate_h 5 mm ceramic_epsR 5.6 ceramic_tanD 0.0041 Figure 3. The Create Variable dialog.
Tip:- Click Add to keep the Create Variable dialog open and add more variables.
- Click Create to add a variable and close the Create Variable dialog.
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[Optional] Group the variables related to the patch.
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[Optional] Group the variables related to the substrate.