Define an infinite planar multilayer substrate.
Some applications for infinite planar multilayer substrates are as follows:
- Add a PEC ground plane at the top and bottom layers to model a
stripline.
- Add a PEC ground plane at the bottom layer to model a microstrip.
- Use the substrate (without a PEC ground plane) to model real earth.
- Use a finite thickness substrate without any ground plane to model a printed
antenna (for example, a log-periodic antenna).
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On the Construct tab, in the Structures
group, click the Planes/Arrays icon. From the drop-down list, select Plane / Ground.
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From the Definition method
drop-down list, select Planar multilayer
substrate.
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Under Infinite layers, specify the top and bottom
infinite layers:
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In the Top layer medium
drop-down list, select the medium for the top layer
that extends into infinity.
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In the Top layer ground plane
drop-down list, specify whether the top layer should
have a ground plane.
- If the top layer has no ground plane, select
None.
- To add a ground plane for the top layer, select
PEC.
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In the Bottom layer medium
drop-down list, select the medium for the bottom
layer that extends into infinity.
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Click Add to add an additional layer. Click
Remove to remove the selected layer from the
substrate.
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For each layer:
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From the Ground plane
drop-down list, select one of the following:
- To remove the PEC ground plane located below the current layer,
click None.
- To add a PEC ground plane located below the current layer, click
PEC.
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Specify the layer thickness.
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Specify the medium.
Note:
- The top layer and bottom layer extends into infinity.
- In the CADFEKO
GUI, the first layer is indexed as 0.
- In the CADFEKO API, the first layer is
indexed as 1.
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In the Z-value at the top of layer 1 field, specify
where the top of layer 1 is located.
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Click OK to define the infinite planar multilayer
substrate and close the dialog.