Patent ID: 7980900

Claim:
An RJ-45 jack, comprising: a printed circuit board; a plurality of input terminals that are electrically connected to the printed circuit board; a plurality of output terminals that are electrically connected to the printed circuit board; a plurality of differential pairs of conductive paths, wherein each conductive path electrically connects a respective one of the plurality of input terminals to a respective one of the plurality of output terminals; and a first compensation structure that couples a first compensating crosstalk signal from a first of the conductive paths of a first differential pair of conductive paths to a first conductive path of a second differential pair of conductive paths; and a second compensation structure on the printed circuit board that couples a second compensating crosstalk signal from a second of the conductive paths of the first differential pair of conductive paths to the first conductive path of the second differential pair of conductive paths, wherein a signal input onto the first of the conductive paths of the first differential pair of conductive paths from an RJ-45 style plug that mates with the RJ-45 style jack reaches the first compensation structure before the signal reaches the second compensation structure, and wherein the second compensation structure comprises a series combination of at least one spiral inductor and a first folded elongated interdigital capacitor, wherein the first folded elongated interdigital capacitor includes first and second generally parallel and spaced apart traces on a first layer of the printed circuit board and third and fourth generally parallel and spaced apart traces on a second layer of the printed circuit board, wherein the first and third traces are electrically connected to each other and the second and fourth traces are electrically connected to each other.