US Patent 6951482 Controlled-impedance coaxial cable interconnect system

An interconnection structure includes a positioning block and a dielectric substrate. A coaxial cable has an end segment that is fitted in a passage in the positioning block and the positioning block is so positioned relative to the dielectric substrate that an end face of the inner conductor of the coaxial cable is presented towards a conductive element on a main face of the substrate. A discrete resilient contact element is interposed between the end face of the inner conductor and the conductive element and in electrically-conductive pressure contact with both the inner conductor and the conductive element.