Patent ID: 9184483
Filing Date: 2015-11-10
Classification: H01P

Abstract:
1. A directional coupler comprising: a first high-frequency line for carrying a first high-frequency signal, a second high-frequency line for carrying a second high-frequency signal, and a coupling line for coupling out signals from the first and the second high-frequency lines, wherein the coupling line has resistive segments that respectively have a predetermined impedance, wherein the directional coupler has no discrete resistive components and is constructed as a layered multilayer circuit, wherein the coupling line is implemented from printed conductive paths and has measurement connections for tapping the coupled-out signals, as well as one or a plurality of ground connections, wherein the conductive paths of the coupling line are arranged in a common plane and are formed from electrically conductive paste that is printed on a substrate, wherein the coupling line includes a central segment for conducting coupled-out signals between the measurement connections, as well as additional resistive segments, which respectively originate with a first end at the central segment, lead away from this central segment, and are respectively connected with their second end to one of the ground connections, the central segment being located on a different layer plane of the multilayer circuit than a layer plane of the multilayer circuit having the first high-frequency line or the second high-frequency line, wherein the resistive segments are formed from predetermined dimensions and/or a predetermined cross-section of a layer of the electrically conductive paste.