很菜的一个问题，请问FEKO能仿真无穷大地板的情况吗？

可以，用格林函数法。

12.21 BO card
With this card a ground plane (at z = 0) can be specified for all computations following
the BO card. The reflection coefficient method is used.
.....
Parameters:
No reflection coefficient ground: No ground plane (or use one of the other ground plane
options — such as the GF card for an exact model of real ground,
or the SY card for a perfect ground plane). This option is used to
switch off the reflection ground if the effect of different grounds
are considered in a single input file.
Reflection coefficient ground plane: Use the reflection coefficient ground plane approximation
with the material parameters specified in the remaining input
fields.
Perfectly electric conducting ground: Use an ideal electric ground in the plane z = 0. In
this case the remaining parameters are ignored.
Perfectly magnetic conducting ground: Use an ideal magnetic ground in the plane z = 0.
Also in this case the remaining parameters are ignored.
Relative permittivity: The relative dielectric constant εr of the ground.
Conductivity: The conductivity σ in 1
Ωm of the ground.
Relative permeability: The relative permeability μr of the ground.
Magnetic loss factor: Magnetic loss tangent tan δμ of the ground (the complex permeability
is then given by μ = μ0μr (1 − j tan δμ)).
Dielectric loss factor: Electric loss tangent tan δ (an alternative way to specify the conductivity
σ — the two loss terms are related by tan δ = σ
ωεrε0
and
they have different frequency behaviour).
It should be noted that it is not possible to calculate the fields below the ground plane,
i.e. it is not possible to calculate the fields in the region z < 0. In addition all structures
must be in the region z > 0. If calculations inside the ground are required, for example
when there are structures below ground, the exact Sommerfeld integrals (GF card) must
be used.
When using a perfect electric or magnetic reflection coefficient ground plane, structures
can be arbitrarily close to the ground (while remaining above it). Segment end points
and triangle edges lying in the plane of the ground plane will make electrical contact with
a perfect electric ground plane. For a perfect magnetic ground the boundary condition
forces the current to zero at this point.
If real ground parameters are used the reflection coefficient approximation is more accurate
for structures further from the ground plane. Typically structures should not be
closer than about λ
10 (FEKO will give a warning if this is the case).
A dielectric ground (real earth) can only be used with bodies treated with MoM,MLFMM,
PO, FEM, or the hybrid MoM/PO, i.e. the hybrid MoM/UTD method cannot be used
in the presence of a real ground.

可以的，在cadfeko中可以直接设置一个无限大的地板，还可以设置有一定介电常数的无限大板子。