Create the model in CADFEKO.
Define any ports and sources required for the model. Specify the operating frequency or
frequency range for the model.
For this example, an impressed field distribution of the TE10 mode in a rectangular
waveguide is used as a source.
To obtain the field distribution, a separate model of a waveguide section with a near
field request is solved.
Note: The separate model
(Create_Mode_Distribution_cf.cfx) is included with the
example.
The near fields are exported to .efe and
.hfe files and then used as input for the near field
source.
-
Use the model considered Waveguide Feed Model and
rename the file.
-
Delete the waveguide port.
Note: Deleting the waveguide port should also delete the waveguide
source.
-
Define the near field data definition.
- E-field file:
Create_Mode_Distribution_cf_NearField1.efe
file.
- H-field file:
Create_Mode_Distribution_cf_NearField1.hfe
file.
- Clear the Also sample along edges check box.
- Width (W): wa
- Height (H):wb
- Number of points along U:
10
- Number of points along V:
5
-
Create the Near field equivalent source.
- Magnitude scale factor:
1
- Phase offset (degrees):
0
- Field data:
NearFieldData1.
- Change the workplane origin to (-wa/2,
-wb/2, -wl +
lambda/4).
Note: The symmetry applied to
Waveguide Feed Model would only be valid if the near field data is also
symmetrical.