Defining Calculation Requests

Define the calculation requests in CADFEKO.

  1. Create a full 3D far field request.
    1. On the Advanced tab of the far field request, enable Export fields to ASCII file (*.ffe).
    2. Enable Calculate spherical expansion mode coefficients.
    3. Enable Export spherical expansion mode coefficients to ASCII file.
    Note: The far field receiving antenna will use the radiation pattern file (.ffe file) of the helix antenna. The spherical modes receiving antenna will use the spherical modes file (.sph file).
  2. Create a near field request.
    1. Definition method: Spherical
    2. On the Advanced tab enable Export fields to ASCII file (*.efe/*.hfe)
    3. Start: (0.45, 0, 0)
    4. End: (0.45, 180, 360)
    5. Increment: (0, 5, 5)
      Note: The near field aperture receiving antenna will use the field data files (.efe/.hfe files) of the helix antenna. The near field surface should capture the entire radiating area of the antenna. The helix antenna has a small ground plane. Therefore using a spherical near field request surrounding the antenna is sufficient.
    Note: The files exported from running this example will be used in the following model of this example.