Patent ID: 8004465

Claim:
A multiband omnidirectional antenna, comprising: a grounded face; an antenna element situated parallel to the grounded face; wherein the antenna element includes a first planar emitter, which has a planar design and extends parallel to the grounded face, a second planar emitter, which surrounds the first planar emitter at a distance, and at least two connection elements for connecting the first and the second planar emitters to each other, the connection elements being essentially situated on, and running alongside, opposite edges of the first planar emitter; a ground connection structure to physically connect the grounded face to the antenna element, and to support the antenna element, the ground connection structure located near, and running substantially parallel to, a first one of the connection elements; and a supply connection structure to supply the antenna element with a transmission signal via a contact point that does not provide any substantial physical support for the antenna element, the supply connection structure located near, and running substantially parallel to, a second one of the connection elements; wherein the dimensions of the first planar emitter and the second planar emitter, the distance between the first planar emitter and the second planar emitter, and the size of the connection elements are all selected to provide the first planar emitter and the second planar emitter with predetermined impedances that differ from one another.