How can we determine the generalized scattering matrix (with network and radiation ports) of a single antenna using spherical wave expansion in FEKO ?
Generalized scattering matrix contains input reflection coefficient (Γ), antenna receiving coefficients (R), antenna transmission coefficients (T) and antenna scattering coefficients (S) for spherical harmonic modes. Antenna scattering matrix defines the relation between incoming and outgoing (scattered) spherical waves from the antenna.