Asymmetric dual bend skew compensation for reducing differential mode to common mode conversion

An apparatus comprising:

• a printed circuit board;
• and
• a differential conductor pair extending along a path between a first component configured to generate a differential signal and a second component configured to receive the differential signal, wherein the path comprises at least one turn in which the differential conductor pair changes direction;
• wherein a first conductor of the differential conductor pair comprises a first set of bends at a location proximate to the turn to provide skew compensation, said first set of bends comprising a first bend angled from a first straight portion extending along a longitudinal axis generally parallel to a second conductor of the differential conductor pair and a last bend angled towards a second straight portion extending along the longitudinal axis generally parallel to said second conductor, said second conductor comprising a second set of bends to reduce differential mode to common mode conversion, said second set of bends asymmetric with said first set of bends and aligned therewith such that said second set of bends is longitudinally positioned between said first bend and said last bend of said first set of bends, wherein said second set of bends comprises eight bends.

An apparatus comprising:

• a printed circuit board;
• and
• a differential conductor pair extending along a path between a first component configured to generate a differential signal and a second component configured to receive the differential signal, wherein the path comprises at least one turn in which the differential conductor pair changes direction;
• wherein a first conductor of the differential conductor pair comprises a first set of bends at a location proximate to the turn to provide skew compensation, said first set of bends comprising a first bend angled from a first straight portion extending along a longitudinal axis generally parallel to a second conductor of the differential conductor pair and a last bend angled towards a second straight portion extending along the longitudinal axis generally parallel to said second conductor, said second conductor comprising a second set of bends to reduce differential mode to common mode conversion, said second set of bends asymmetric with said first set of bends and aligned therewith such that said second set of bends is longitudinally positioned between said first bend and said last bend of said first set of bends, wherein said second set of bends comprises a matching pair of bends.

A method comprising:

• positioning a first component for generating a differential signal on a printed circuit board;
• positioning a second component for receiving the differential signal on the printed circuit board;
• and
• routing a differential conductor pair on a path between said first component and said second component, wherein the path comprises at least one turn in which the differential conductor pair changes direction;
• wherein a first conductor and a second conductor of the differential conductor pair each comprises a plurality of sets of bends proximate to the turn to provide skew compensation while reducing differential mode to common mode conversion, wherein each of said plurality of sets of bends in the second conductor is aligned with a respective one of the sets of bends in the first conductor, and wherein each of the sets of bends in the second conductor comprises double the number of bends in each of the sets of bends in the first conductor, each of the sets of bends in the first conductor comprising at least two bends.

A method comprising:

• positioning a first component for generating a differential signal on a printed circuit board;
• positioning a second component for receiving the differential signal on the printed circuit board;
• and
• routing a differential conductor pair on a path between said first component and said second component, wherein the path comprises at least one turn in which the differential conductor pair changes direction;
• wherein a first conductor and a second conductor of the differential conductor pair each comprises a plurality of sets of bends proximate to the turn to provide skew compensation while reducing differential mode to common mode conversion, wherein each of said plurality of sets of bends in the second conductor is aligned with a respective one of the sets of bends in the first conductor, and wherein said plurality of sets of bends in the second conductor comprises a matching pair of bends.

An apparatus comprising:

• a printed circuit board;
• and
• a differential conductor pair extending along a path between a first component configured to generate a differential signal and a second component configured to receive the differential signal, wherein the path comprises at least one turn in which the differential conductor pair changes directions;
• wherein a first conductor of the differential conductor pair comprises a first set of bends at a location proximate to the turn to provide skew compensation and a second conductor comprises a second set of bends to reduce differential mode to common mode conversion, said second set of bends asymmetric with said first set of bends and aligned therewith, wherein a number of bends in said second set of bends is greater than a number of bends in said first set of bends, and wherein said first set of bends and said second set of bends define frustoconical shapes extending in the same direction and wherein said second set of bends is longitudinally positioned between a first bend and a last bend in said first set of bends.