Creating the Model

Open the patch antenna, create a representation of the patch antenna that will conceal the patch antenna details once a password was defined. Grant access to the workplane at the center of the protected model.

Note: The completed model is provided in the application macro library. It is recommended to view the steps below together with the model to familiarise yourself with the model protection workflow.
  1. Open the patch model from the application macro library in EG B1.2.
  2. [Optional] Create geometry that will represent the protected model. For this example, a rectangle with the text Logo was created. The representation geometry can be a company logo or any geometry created by the designer/creator of the protected model.1
    Figure 1. On the left the patch antenna and to the right, the representation geometry of the patch.


    Note: For the model from the application macro library, the representation geometry was excluded from the simulation.

    This allows you to run the Solver should you wish to do so since the representation geometry is still part of the simulation model and could cause warnings or errors when running the Solver.

  3. Protect the model using a password.
  4. Move the representation geometry that will conceal the model (for this example, the rectangle with the text Logo) to Unprotected Information in the model tree. Include the representation geometry if is currently excluded.
  5. To allow anyone that uses the model to have access to the workplane in the model (even if they do not know the password), grant access to Antenna_workplane. 2
  6. Save the model as patch_protected.cfx.
1 For this example, text was created in third-party software and exported to a .dxf file. The .dxf file was then imported into CADFEKO. The steps are not included since it is not part of the scope of this example.
2 The workplane will be used to align the protected patch antenna on the Rooivalk helicopter.