RF directional coupler module

A module for containing a circuit for performing discrete circuit functions on a radio frequency signal, said module comprising:

• a housing of electrically conductive material defining an enclosed interior;
• said housing having a front face and an opposite rear face separated by opposite sidewalls and opposite end walls;
• a plurality of coax connectors secured to said rear face with an outer shield of said connectors electrically coupled to said housing;
• a circuit board contained within said interior and positioned generally parallel to and spaced between said sidewalls;
• said circuit board having a component side opposing a first of said sidewalls and a ground side opposing a second of said sidewalls;
• said ground side including a layer of electrically conductive material electrically connected to said housing;
• a plurality of connection locations on said circuit board, each of said connection locations including a ground connection for connecting to said layer of electrically conductive material;
• said component side of said circuit board including a plurality of circuit components interconnected with one another and with said connection locations through a plurality of circuit paths;
• said coax connectors connected to said connection locations each of said outer shields of said coax connectors connected to said ground connections of said connection locations;
• said plurality of components including a plurality of couplers for receiving a plurality of branch signals delivered along said circuit paths and combining said branch signals into a main signal at one of said connection locations;
• said circuit components further including a plurality of removable attenuators associated with individual ones of said branch signals, said attenuators positioned along said front face;
• said front face including at least one opening sized to pass said attenuators through said front face.