US Patent 7381089 Coaxial cable-connector termination

A high frequency coaxial cable having a foil (7a) between the cable insulator (5) and cable braid (7b), is terminated to a coaxial connector (40) in a manner that allows fast and easy cable preparation and results in a termination with minimal axial electric field lines that cause a high insertion loss and a high VSWR (voltage standing wave ratio). A bore (46) at the rear portion of the connector outer conductor, receives the cable insulator with foil around the cable insulator. The bore has a front part (54) that forms an interference fit around the foil, to avoid an axially-extending gap which might contain axially-extending field lines. The front of cable insulator and foil are flush and both abut the insulation (25) of the connector.