Cable coupling connector

A cable coupler including an external cylinder mechanism having an inner conductor for electrically connecting the inner conductor itself to the outer conductors of the shielded cables, an outer conductor having a larger diameter than the inner conductor, a gap portion disposed between the inner conductor and the outer conductor, and capacitors arranged in the gap portion, for electrically connecting between the outer conductor and the inner conductor, an inner portion of the external cylinder mechanism being able to be opened and closed along a longitudinal direction, an internal coupling mechanism placed inside the inner conductor and having connecting pins for holding the core wires of the shielded cables, for electrically connecting between the core wires of the shielded cables, and a base for holding the external cylinder mechanism and for electrically connecting the external cylinder mechanism to an external conductor.