Patent ID: 8907856

Claim:
An antenna unit for wireless audio transmission comprising: a first at least partially metallic main surface for placement of the antenna unit on a substantially planar surface; a second at least partially metallic main surface, wherein the second main surface is arranged parallel to the first main surface, and wherein the second main surface is smaller than the first main surface; a first end having a first and a second inclined side surface and a connection for a feed line of the antenna unit, wherein the first and second side surfaces converge at a predetermined angle at the first end and the connection is provided in the region of the interface between the first and second side surfaces; and a second end having at least one inclined third side surface, wherein the first and second side surfaces and the third side surface extend between the first and second main surfaces, and wherein the first and second side surfaces are entirely metallic and the third side surface is entirely non-metallic; wherein the antenna unit has a preferential radiation inclined upwardly in the direction of the third side surface.