Hello, I`m chunho @ south korea.
I want to know the Theoretical background when calculating farfield from fields known in surface in lumerical FDTD.
In Support page, There is a reference written from Taflove, but the book does not contain the equation how to get farfield radiating pattern(Er, Etheta, Ephi) from a fields known in a surface(e.g. Ex, Ey, Ez in a x-y plane).
Does anyone have another reference about this near-to-farfield transformation?
Thanks in advance.