Abstract: A system is provided for measuring far-field characteristics of an AUT. The system includes an AUT positioner for positioning the AUT on a transverse axis; a curved reflector defining a reference focal plane corresponding to a focal point of the curved reflector at a reference position on the transverse axis of the AUT positioner; and a measurement array including feed antennas configured to communicate RF signals with the AUT via the curved reflector. A selected feed antenna is offset in a transverse direction from a reference line connecting the focal point and the reference position on the transverse axis, such that an offset focal plane corresponding to the selected feed antenna is angularly offset from the reference focal plane. The AUT positioner positions the AUT at an offset location, at which the AUT has a planar phase front parallel to the offset focal plane of the selected feed antenna.