Patent ID: 7498989

Claim:
An antenna element, comprising: a generally planar ground plane; an electrically conductive first planar disk lying parallel with said ground plane and spaced therefrom by a first distance, said first planar disk defining a feed side facing said ground plane; an electrically conductive second planar disk lying parallel with said ground plane and spaced therefrom by a second distance, greater than said first distance, said second planar disk being registered with said first planar disk; an elongated thermally and electrically conductive element thermally and electrically coupled to a first location on said ground plane and extending perpendicular to said ground plane along a central axis, and making thermal contact with the center of said first planar disk and with the center of said second planar disk; and at least first and second feed conductors making contact with said feed side of said first planar disk at first and second feed locations lying on a first line extending through said central axis.