High frequency circuits requires some level of accuracy in the designing phase. High frequency PCBs need to be designed taking into account the physical dimensions for each line included.
FreeCAD is a perfect solution for designing high frequency PCBs, but it needs 3D models of the electronic components used for these circuits.
In the section "FreeCAD electronic components", it can be found these 3D models, with other circuits designed and presented in this blog.
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