An antenna comprising: a unit cell including: a radiating element including first and second slots (351, 352), a dielectric substrate comprising a central cavity filled with a dielectric element, a feed network proximate to the central cavity and between the dielectric element and the radiating element, the feed network comprising: first and second horizontal feeds (341a, 342a) separated by an air gap, and first and second vertical feeds (341b, 342b) connected to the first and second horizontal feeds, respectively, the first and second vertical feeds being connected to feed first and second portions of the radiating element, respectively, the first and second portions of the radiating element adjacent to the first and second slots, respectively, to feed a transmission to the first and second slot, respectively, characterized in that the antenna further comprises an interconnect phasing cell connected to the unit cell, the interconnect phasing cell comprising: a dielectric substrate comprising a central cavity filled with a dielectric element; an elevated ground plane above the dielectric substrate including a first portion and a second portion; and a transmission line proximate to the central cavity and between the first portion and the second portion of the elevated ground plane, the transmission line connected to one of the first horizontal feed or the second horizontal feed. a radiating element including first and second slots (351, 352), a dielectric substrate comprising a central cavity filled with a dielectric element, a feed network proximate to the central cavity and between the dielectric element and the radiating element, the feed network comprising: first and second horizontal feeds (341a, 342a) separated by an air gap, and first and second vertical feeds (341b, 342b) connected to the first and second horizontal feeds, respectively, the first and second vertical feeds being connected to feed first and second portions of the radiating element, respectively, the first and second portions of the radiating element adjacent to the first and second slots, respectively, to feed a transmission to the first and second slot, respectively, first and second horizontal feeds (341a, 342a) separated by an air gap, and first and second vertical feeds (341b, 342b) connected to the first and second horizontal feeds, respectively, the first and second vertical feeds being connected to feed first and second portions of the radiating element, respectively, the first and second portions of the radiating element adjacent to the first and second slots, respectively, to feed a transmission to the first and second slot, respectively, characterized in that the antenna further comprises an interconnect phasing cell connected to the unit cell, the interconnect phasing cell comprising: a dielectric substrate comprising a central cavity filled with a dielectric element; an elevated ground plane above the dielectric substrate including a first portion and a second portion; and a transmission line proximate to the central cavity and between the first portion and the second portion of the elevated ground plane, the transmission line connected to one of the first horizontal feed or the second horizontal feed. a dielectric substrate comprising a central cavity filled with a dielectric element; an elevated ground plane above the dielectric substrate including a first portion and a second portion; and a transmission line proximate to the central cavity and between the first portion and the second portion of the elevated ground plane, the transmission line connected to one of the first horizontal feed or the second horizontal feed.