Patent ID: 6107965
Filing Date: 2000-08-22
Classification: H01Q

Abstract:
A dual polarized antenna element comprisinga planar radiating element (2) arranged in a first plane and having a line of symmetry (11);a metallic surface (4) arranged in a second plane and provided with a plurality of slots (5,6; 5,6.1,6.2) extending under the radiating element (2);a supply conductor structure arranged in a third plane so as to be coupled with the slots (5,6; 5,6.1,6.2) in the second plane, said second plane being located above said third plane and said supply conductor structure comprising separate supply conductors (7,8), each of said separate supply conductors being arranged in said third plane;wherein one (5) of the slots extends on the line of symmetry (11) of the radiating element (2) and at least one other (6; 6.1,6.2) of the slots extends perpendicularly to the line of symmetry and mirror symmetric to the line of symmetry, whereby the said one (5) and said at least one other (6; 6.1,6.2) of the slots are coupled with respective ones of said separate supply conductors (7,8); andwherein said at least one other (6; 6.1,6.2) of the slots running perpendicular to the line of symmetry (11) of the radiating element (2) is coupled with one (8) of said supply conductors at two points (12,14;13,15) located at respective mirror symmetric positions relative to the line of symmetry and said one (8) of said supply conductors extends mirror symmetrically to said line of symmetry (11) so as to form a branching conductor.