Patent ID: 7101191

Claim:
An electrical connector, comprising: a first circuit board having a face and having a plurality of signal conductors disposed on the face of the first circuit board; a second circuit board having a face and having a plurality of signal conductors disposed on the face of the second circuit board; a spacer having a first face and a second face opposite the first space, wherein the spacer is disposed directly between the first circuit board and the second circuit board such that the first face of the spacer abuts the face of the first circuit board and the second face of the spacer abuts the face of the second circuit board, the number of signal conductors disposed on the face of the first circuit board is equal to M; the first face of the spacer has a set of at least M grooves formed thereon, each one of the M grooves mirroring a different one of the M signal conductors disposed on the face of the first circuit board, the number of signal conductors disposed on the face of the second circuit board is equal to N; the second face of the spacer having a set of at least N grooves disposed thereon, each one of the N grooves mirroring a different one of the N signal conductors, and none of the at least N grooves mirror any one of the at least M grooves.