Designating Infinite Ground Planes
To simulate the effects of an infinite ground plane in an HFSS design:
- Select the Infinite ground plane check box when setting up a perfect E, finite conductivity, or impedance boundary condition. For Impedance, Layered Impedance, and Finite Conductivity Boundary conditions, HFSS supports only one infinite boundary condition per design. For PEC, multiple antenna ground planes are supported.
This selection only affects the calculation of near- and far-field radiation during post processing. Ansys Electronics Desktop models the boundary as a finite portion of an infinite, perfectly conducting plane. If the infinite ground plane does not touch a radiation boundary, you will receive a warning. A finite sheet, which does not touch the radiation boundary condition cannot be an infinite ground plane.