Patent ID: 7180457

Claim:
A radiator element comprising: a first air of notch radiator elements s aced a art from one another and disposed in a first plane, each of said notch radiator elements having a feed surface; a second pair of notch radiator elements spaced apart from one another and disposed in a second plane which is substantially orthogonal to the first plane in which the first pair of notch radiator elements is disposed, such that the first pair of notch radiator elements are disposed to receive RF signals having a first polarization and the second pair of notch radiator elements are disposed to receive RF signals having a second polarization which is orthogonal to the first polarization said first and second pairs of notch radiator elements being symmetrically disposed about a centerline defined by an intersection of the first and second planes and each of said notch radiator elements; and a balanced symmetrical feed including: a first pair of radio frequency (RF) feed lines, each of the RF feed lines disposed symmetrically about the centerline and each of the RF feed lines coupled to a feed surface the first air of notch radiator elements; and a second pair of RF feed lines, each of the RF feed lines disposed symmetrically about the centerline and each of the RF feed lines coupled to a feed surface of the second pair of notch radiator elements wherein with the first and second pairs of RF feed lines are coupled to the first and second pairs of notch radiator elements such that the first and second pairs of notch radiator elements are provided having coincident phase centers adjacent the transition section wherein the balanced symmetrical feed is provided as a raised balanced symmetrical feed and further comprises: a housing having four sidewalls with each sidewall having an upper edge surface and a lower edge surface, the housing having a central longitudinal axis which is aligned with the centerline defined by the intersection of the first and second planes; and a raised structure projecting from the upper edge surface of said sidewalls, said raised structure having a substantially pyramidal shape with each of the feed lines in the first and second pairs of feed lines disposed on one of the four sidewalls and on one of the four sides of the pyramidal-shaped structure wherein each of the feed lines have an end which terminates at a point on the pyramidal-shaped structure which is substantially aligned with the centerline defined by the intersection of the first and second planes.