Patent ID: 7712381

Claim:
Antenna arrangement for in-coupling or out-coupling of electromagnetic high frequency waves in a pipe-shaped hollow body ( 1 ), which comprises at least first and second patch elements that are each respectively embodied as a respective curved flat patch element ( 2 , 3 ) applied on a dielectric substrate ( 8 ) within a pipe outer wall ( 7 ) of the hollow body ( 1 ), and which includes an energy supply element, which delivers high frequency energy through the pipe outer wall ( 7 ) to at least the first one of the patch elements ( 2 ), wherein the first and second patch elements are both together arranged and adapted to couple the electromagnetic high frequency waves either into the hollow body or out of the hollow body, and wherein the first and second patch elements are each respectively integrated into a pipe inner wall ( 5 ) of the hollow body ( 1 ) and have curved surfaces fitted to a curved longitudinal wall surface of the pipe inner wall of the hollow body ( 1 ), whereby the patch elements are embodied rectangularly and are each respectively arranged with a longitudinal side ( 14 ) thereof oriented transversely to the hollow body longitudinal direction, and wherein the second patch element ( 3 ) is located in the pipe inner wall ( 5 ) lying diametrically opposite to the first patch element ( 2 ).