HFSS15: Floquet Port: 3D Refinement

This panel contains the Affects Refinement checkboxes which allows you to specify Floquet modes in the 3D adaptive refinement process. Typically, you select no modes or only one or both specular (TE00 or TM00) modes. Selecting more than this may affect the efficiency and accuracy of the solution process.

In 3D adaptive refinement the generated mesh is a compromise which simultaneously represents the 3D field patterns of every mode included in the adapt process. If the field patterns of certain modes represent the fields of interest and others do not, excluding the latter from the adapt process will result in a "targeted" mesh that better represents the excitation field pattern.

For antenna array simulations in which the active impedance or embedded-element pattern is sought, the Wave or Lumped ports modeling the feed structure provide the fields of interest. In this case, no Floquet modes should be included in the adapt process. On the other hand, if the per-cell RCS is of interest, one or both specular Floquet modes provide the fields of interest and should be included in the 3D adapt process by checking the corresponding Affects Refinement boxes. Similarly, for an FSS simulation with two Floquet ports, specular modes provide the fields of interest and should be selected to participate in the 3D adapt process.

In certain simulations (for example, a frequency-selective surface) you will set up a second Floquet port. Note that when you do this HFSS automatically copies the lattice vectors, modes table, and 3D refinement settings from the first Floquet port to the second.