US Patent 7281957 Communications connector with flexible printed circuit board

A communications connector with a flexible printed circuit board is provided. The flexible printed circuit board is electronically and mechanically connected to the plug interface contacts of the jack near the plug/jack interface, in order to provide effective crosstalk compensation. The flexible printed circuit board has fingers at one end allowing it to flex as individual plug interface contacts are depressed when a plug is installed into the jack. A second end of the flexible printed circuit board has through holes for accepting insulation displacement contacts. The second end of the flexible printed circuit board may be rigidly supported, to allow insertion of the insulation displacement contacts. Various designs for capacitive and/or inductive couplings are provided, resulting in improved crosstalk performance.