Abstract: An array antenna (12atf) particularly useful for a spacecraft includes a plurality of antenna elements (310). Each of the elements includes a conductive hexagonal cup (408) having sides (410a, 410b, 410c, . . .) which are thirteen twentieths of a wavelength long at the center frequency, and have a height above the bottom (412) which is a little more than one-third wavelength. A crossed dipole (420) includes two dipoles (420V, 420H), the first (421, 422) having elements approximately one quarter wavelength long, and the second (420H) having elements (423, 424) about three twentieths of a wavelength long. The plane of the crossed dipole is about one quarter wavelength above the bottom of the cup. A first director ring (512) has a diameter of about one quarter wavelength, and is spaced about nine tenths of a wavelength above the bottom. A second director ring (514) has a like diameter, and is spaced about seven tenths of a wavelength above the bottom of the cup.