What kind of antenna have 25dBi gain ?

Hi all,

Except the reflector antenna, what kind of antenna can have 25dBi gain at 12GHz, circularly polarized ?

I guess it has to be the conical horn right (not rectangular) ?

horns, arrays, you might get there with a yagi but that is probably pushing it.

rectangular horns with the right excitation might be able to excite circular polarization.

remember reading it somewhere ...

reflectors,horns,lens