An apparatus including a conductive sleeve including an outer-conductive surface and an inner passageway that extends from a first end at least partially to a second end. The passageway is adapted to receive and shield a device that provides at least one of a radio frequency path and an electrical current path. In one embodiment, movable flanges at an end of the sleeve are used for coupling the outer-conductive surface of the sleeve to a ground connection. In one embodiment, the sleeve may further be used to interconnect a pair of RF structures with ground connections at each end of the sleeve and with signal connections to the device at each end.