An antenna, comprising: a radiator aperture assembly including a plurality of radiator sticks, each radiator stick including a row of radiating elements configured to transmit and receive RF energy and a body having opposite sides; conductive elements (24, 241, 242) coupled to the radiating elements; and a plate disposed proximate to the radiator aperture assembly through which the conductive elements extend, complementary opposite sides of the respective bodies of adjacent radiator sticks and a surface of the plate being configured to form a slot radiator, wherein each radiating element comprises a circulator comprising a probe portion, wherein each radiating element extends into the slot radiator formed adjacent to its corresponding radiator stick, wherein the slot radiator comprises: a planar surface at the surface of the plate; a narrow aft portion proximate to the surface of the plate; a wide forward portion remote from the surface of the plate; and a chamfered and notched portion defined between the narrow aft and wide forward portions, wherein the narrow aft portion is straight, and wherein the probe portion of the circulator of each radiating element partially extends through a forward end of the respective straight narrow aft portion such that a distal end of the probe portion is slightly displaced from the complementary opposite side of the body of the respective adjacent radiator stick. a radiator aperture assembly including a plurality of radiator sticks, each radiator stick including a row of radiating elements configured to transmit and receive RF energy and a body having opposite sides; conductive elements (24, 241, 242) coupled to the radiating elements; and a plate disposed proximate to the radiator aperture assembly through which the conductive elements extend, complementary opposite sides of the respective bodies of adjacent radiator sticks and a surface of the plate being configured to form a slot radiator, wherein each radiating element comprises a circulator comprising a probe portion, wherein each radiating element extends into the slot radiator formed adjacent to its corresponding radiator stick, wherein the slot radiator comprises: a planar surface at the surface of the plate; a narrow aft portion proximate to the surface of the plate; a wide forward portion remote from the surface of the plate; and a chamfered and notched portion defined between the narrow aft and wide forward portions, wherein the narrow aft portion is straight, and wherein the probe portion of the circulator of each radiating element partially extends through a forward end of the respective straight narrow aft portion such that a distal end of the probe portion is slightly displaced from the complementary opposite side of the body of the respective adjacent radiator stick. a planar surface at the surface of the plate; a narrow aft portion proximate to the surface of the plate; a wide forward portion remote from the surface of the plate; and a chamfered and notched portion defined between the narrow aft and wide forward portions, wherein the narrow aft portion is straight, and wherein the probe portion of the circulator of each radiating element partially extends through a forward end of the respective straight narrow aft portion such that a distal end of the probe portion is slightly displaced from the complementary opposite side of the body of the respective adjacent radiator stick.