Creating the Model
Create the model in CADFEKO. Define any ports and sources required for the model. Specify the operating frequency or frequency range for the model.
- Request a standard configuration.
- Delete the FEM line ports.
- Expand shielded_filter and delete Feed1 and Feed2.
- Set the region properties of the two regions back to the default (MoM/MLFMM with surface equivalence principle (SEP) - default).
- Delete all horizontally orientated faces, except that of the top of the box, the microstrip line and stub.
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Add a planar multilayer substrate (infinite plane) with a conducting layer at
the bottom.
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Select Plane / Ground.
- Click Planar multilayer substrate.
- Thickness (Layer 1): substrate_height
- Medium (Layer 1): substrate
- Ground plane (Layer 1): PEC
- Z value at the top of layer 1: substrate_height
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Select Plane / Ground.
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Add microstrip ports to the edges of the feedline (see Figure 1 and Figure 2).
Tip: The microstrip port connects to a single edge and is only used with infinite substrates. The positive terminal is indicated by the red cylinder in the 3D view.
- Set a local mesh size on the microstrip lines (faces) of strip_width/2.