Phase compensation in a differential pair of transmission lines

1. A method of phase compensation in a differential pair of transmission lines, the method comprising:

identifying, by a phase compensation computer, a plurality of direction changes in the differential pair of transmission lines;

determining, by the phase compensation computer for each direction change in the differential pair of transmission lines, a direction change angle; and

determining, by the phase compensation computer for each direction change in the differential pair of transmission lines, the geometry of one or more phase correction humps to include in one transmission line of the differential pair of transmission lines in dependence upon the direction change angle.

2. The method of claim 1 wherein determining the geometry of one or more phase correction humps to include in one transmission line of the differential pair of transmission lines in dependence upon the direction change angle further comprises determining a number of phase correction humps to include in one transmission line of the differential pair of transmission lines in dependence upon the direction change angle.

3. The method of claim 1 wherein determining the geometry of one or more phase correction humps to include in one transmission line of the differential pair of transmission lines in dependence upon the direction change angle further comprises:

determining, by the phase compensation computer, a line distance differential that results from the direction change in the differential pair of transmission lines, wherein the line distance differential represents a difference in the length of each transmission line as a result of the direction change in the differential pair of transmission lines; and

determining, by the compensation computer, the geometry of one or more phase correction humps to include in one transmission line of the differential pair of transmission lines in dependence upon the line distance differential.

4. The method of claim 3 wherein the geometry of one or more phase correction humps to include in one transmission line of the differential pair compensates for the line distance differential within a predetermined threshold.

5. The method of claim 1 wherein the differential pair of transmission lines are traces on a printed circuit board.

6. An apparatus for phase compensation in a differential pair of transmission lines, the apparatus comprising a computer processor, a computer memory operatively coupled to the computer processor, the computer memory having disposed within it computer program instructions that, when executed by the computer processor, cause the apparatus to carry out the steps of:

identifying, by a phase compensation computer, a plurality of direction changes in the differential pair of transmission lines;

determining, by the phase compensation computer for each direction change in the differential pair of transmission lines, a direction change angle; and

determining, by the phase compensation computer for each direction change in the differential pair of transmission lines, the geometry of one or more phase correction humps to include in one transmission line of the differential pair of transmission lines in dependence upon the direction change angle.

7. The apparatus of claim 6 wherein determining the geometry of one or more phase correction humps to include in one transmission line of the differential pair of transmission lines in dependence upon the direction change angle further comprises determining a number of phase correction humps to include in one transmission line of the differential pair of transmission lines in dependence upon the direction change angle.

8. The apparatus of claim 6 wherein determining the geometry of one or more phase correction humps to include in one transmission line of the differential pair of transmission lines in dependence upon the direction change angle further comprises:

determining, by the phase compensation computer, a line distance differential that results from the direction change in the differential pair of transmission lines, wherein the line distance differential represents a difference in the length of each transmission line as a result of the direction change in the differential pair of transmission lines; and

determining, by the compensation computer, the geometry of one or more phase correction humps to include in one transmission line of the differential pair of transmission lines in dependence upon the line distance differential.

9. The apparatus of claim 8 wherein the geometry of one or more phase correction humps to include in one transmission line of the differential pair compensates for the line distance differential within a predetermined threshold.

10. The apparatus of claim 6 wherein the differential pair of transmission lines are traces on a printed circuit board.

11. A computer program product for phase compensation in a differential pair of transmission lines, the computer program product disposed upon a computer readable medium, wherein the computer readable medium is not a signal, the computer program product comprising computer program instructions that, when executed, cause a phase compensation computer to carry out the steps of:

identifying a plurality of direction changes in the differential pair of transmission lines;

determining for each direction change in the differential pair of transmission lines, a direction change angle; and

determining for each direction change in the differential pair of transmission lines, the geometry of one or more phase correction humps to include in one transmission line of the differential pair of transmission lines in dependence upon the direction change angle.

12. The computer program product of claim 11 wherein determining the geometry of one or more phase correction humps to include in one transmission line of the differential pair of transmission lines in dependence upon the direction change angle further comprises determining a number of phase correction humps to include in one transmission line of the differential pair of transmission lines in dependence upon the direction change angle.

13. The computer program product of claim 11 wherein determining the geometry of one or more phase correction humps to include in one transmission line of the differential pair of transmission lines in dependence upon the direction change angle further comprises:

determining a line distance differential that results from the direction change in the differential pair of transmission lines, wherein the line distance differential represents a difference in the length of each transmission line as a result of the direction change in the differential pair of transmission lines; and

determining the geometry of one or more phase correction humps to include in one transmission line of the differential pair of transmission lines in dependence upon the line distance differential.

14. The computer program product of claim 13 wherein the geometry of one or more phase correction humps to include in one transmission line of the differential pair compensates for the line distance differential within a predetermined threshold.

15. The computer program product of claim 11 wherein the differential pair of transmission lines are traces on a printed circuit board.