a space fed antenna with a folded path to reduce the distance between a phased array and the focal point of such array is shown to be made up of : a first plurality of vertically polarized antenna elements incorporated in the phased array ; a second plurality of cross - polarized antenna elements disposed to form a polarization - twisting screen at a distance from the first plurality of vertically polarized antenna elements equal to one - third the focal length of such elements ; and a third plurality of latching circulators connected between selected pairs of cross - polarized antenna elements in the polarization - twisting screen so that such pairs also may function as a feed array for the space fed antenna .