HFSS15: Spherical Vector Input Fomat

For the equivalent Spherical Setup first click the radio button Spherical on the Incident Wave Source dialog box so that the vectors align similarly per your settings in the Cartesian Vector Setup. See the figures below. If you use the Spherical vector setup, HFSS will ensure that the direction of the E₀ vector is perpendicular to that of the k vector.

1. On the Incident Wave Source dialog box, select the radio button Spherical.

2. Click the Spherical Vector Setup and edit the IWavePhi, IWaveTheta, Eo Vector fields.

Note: If you enter values in the Step fields and click the View Point List button, you can see all the phi or theta values.

A spherical grid is created when q is swept through each f point. At each grid point, an incident wave is present traveling towards the origin of the coordinate system for the design. The number of incident waves and grid points can be calculated by multiplying the number of f points by the q points.

Note: Only a single incident wave angle can be defined for periodic structures which are defined with master and slave boundaries.

Note: Whenever additions/changes are made to incident waves that affect fields, it invalidates those solutions that can possibly have fields. Meshes are not invalidated.

The plot of the RCS of a dielectric sphere for an incident regular/propagating plane wave are shown below.

The Mesh Plot and the field are as shown in the figure below. The mesh is denser where the field is high due to the adaptive meshing feature in HFSS.