Patent ID: 6882243
Filing Date: 2005-04-19
Classification: H01P

Abstract:
1. Directional coupler having at least one coupling line piece which is coupled to a coaxial inner conductor of coaxial line pieces and, for this purpose, the coupling line piece is provided on or adjacent to a coupler substrate which is arranged on a resting or mounting section of an outer conductor of the coaxial line piece in a region of a cutout in the outer conductor, and the coupling line piece is in this way held in a space between the inner conductor and the outer conductor, comprising: an attenuation circuit adjacent and connected to each of the two coupling line ends on the coupler substrate, or an attenuation circuit connected to one coupling line end with a terminating resistor being connected to the other coupling line end on the coupler substrate, an electrical level evaluation circuit device provided on the coupler substrate, and an interface device for connection of possibly unshielded cables provided on the coupler substrate, or possibly unshielded cables are connected to the level evaluation circuit device or connected downstream from the level evaluation circuit device on the coupler substrate, via which the RF signals which are obtained via the coupling line piece can be passed on in the form of analog AF signals.