Defining Calculation Requests
Define the calculation requests in CADFEKO.
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Create a full 3D far field request.
- On the Advanced tab of the far field request, enable Export fields to ASCII file (*.ffe).
- Enable Calculate spherical expansion mode coefficients.
- Enable Export spherical expansion mode coefficients to ASCII file.
Note:- Define a far field receiving antenna using a .ffe file.
- Define a spherical modes receiving antenna using a .sph file.
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Create a near field request.
- Definition method: Spherical
- On the Advanced tab enable Export fields to ASCII file (*.efe/*.hfe)
- Start: (0.45, 0, 0)
- End: (0.45, 180, 360)
-
Increment: (0, 5,
5)
Note: Define a near field aperture receiving antenna using .efe/.hfe files.
Since the near field surface should capture the entire radiating area of the antenna and the helix antenna has a small ground plane, a spherical near field request surrounding the antenna is sufficient.