Patent ID: 6384700
Filing Date: 2002-05-07
Classification: H01Q

Abstract:
In a waveguide coupling arrangement for coupling a signal feed from a coaxial line to a surface wave transmission line formed by a cable of extended length, the improvement comprising:a waveguide member having a centerline axis, a terminating end at which the cable is terminated, and a conductive horn extending about the centerline axis to an open end thereof from which the cable extends outwardly, said cable being formed with a core conductor; a mounting portion fixed to one end of the cable at the terminating end of said waveguide member; said waveguide member having an inlet toward said terminating end for receiving the coaxial line therein at substantially a right angle to said centerline axis; a fixed connection electrically connecting an outer conductor of said coaxial line with said conductive horn; a conductive sleeve slidingly fitted over and in electrical contact with the core conductor of the cable, and also electrically connected to an inner conductor of the coaxial line extending at substantially a right angle thereto; and a dielectric layer sheathed over the core conductor of the cable over a signal transition region extending substantially from the position of said sleeve to a selected distance slightly beyond the open end of said horn, wherein said signal transition region exhibits a Goubau transmission characteristic.