Defining Calculation Requests
Define the calculation requests in CADFEKO.
-
Define far field data.
- Number of theta points: 37
- Number of phi points: 73
- File name: Browse for the .ffe file
Tip: Click on Field/Current data on the Construct tab to find all the field data types. Select Define Far Field Data. -
Import the spherical mode data from file.
- File name: Browse for the .sph file.
Define near field data.
-
Select Define Near Field Data.
- Source type: Load from .efe and .hfe file.
- E-field file: Browse for the .efe file.
- H-field file: Browse for the .hfe file.
- Coordinate system: Spherical
- Radius (R): 0.45
- Number of points along theta: 37
- Number of points along phi: 73
-
On the Workplane tab set the following:
- Select Custom workplane
- Origin: (helix_centre, helix_centre, helix_centre)
- U vector: (1, 0, 1).
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Create a far field receiving antenna request.
- Field data: FarFieldData1
-
On the Workplane tab set the following:
- Select Custom workplane
- Origin: (helix_centre, helix_centre, helix_centre)
- U vector: (1, 0, 1)
-
Create a spherical modes receiving antenna request.
- Field data: SphericalModesData1
- Set the Workplane identical to that set in the far field receiving antenna request in Step 4.
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On the Advanced tab select Use far
field approximation.
Tip: A spherical modes source requires that no geometry breaches the far field distance of the source. Feko will give a warning if this is the case.
-
Create a near field receiving antenna request.
- On the General tab select Combine individual faces
- Field data: NearFieldData1
-
Set the radiated power to 100W.
Tip: To set the radiated power, on the Source/Load tab select Power and select the option Total source power (no mismatch).