Patent ID: 7327318

Claim:
An antenna comprising: first and second flat conductive coplanar primary elements, each said element having a perimeter including at least one straight edge and at least one shaped edge, said shaped edge including at least one vertex at which said shaped edge is a maximal distance from said straight edge, wherein said primary elements are symmetrical about a line bisecting said straight edges of said elements, wherein corresponding vertices of said first and second primary elements are the most proximal points of said elements, and wherein each of said first and second primary elements includes at least one radio frequency (RF) feeding port proximal to said vertex, respectively; first and second flat conductive auxiliary elements coplanar with said primary elements, said auxiliary elements located on a side of said primary elements proximal to said straight edges of said primary elements, wherein said auxiliary elements are symmetrical about said bisecting line; first and second impedance elements electrically connecting each of said primary elements to a respective auxiliary element; and a flat conductive ground element in a plane substantially parallel to said primary elements, said ground element lying in a different plane than said primary elements, wherein the conductive area of said ground element is larger than the area of a rectangle defined by the straight edges or said primary elements, wherein a center point of said ground element is substantially opposite a point equidistant to said feeding ports of said primary elements.