Abstract: A tape can comprise a strip of dielectric material, with adhering patches of electrical conductive material. The patches can be substantially electrically isolated from one another. The strip can be disposed in a communication cable to provide a shield that is electrically discontinuous or has high resistance between opposite cable ends. Each patch can interact with electromagnetic radiation associated with electrical signals transmitting over the cable. The patches can collectively interact with the transmitting electrical signals in a cumulative or resonant manner to produce a spike in return loss at a particular frequency of the transmitting signals. The frequency location of the spike can depend upon the sizes of the patches, with size impacting manufacturability. The patches can be sized such that the spike falls within an operating frequency of the transmitting signal but is suppressed, so the cable meets return loss specifications while offering manufacturing advantage.

Abstract: A data communication cable includes a cable jacket surrounding a plurality of twisted pairs of insulated conductors disposed longitudinally over the length of the communication cable and arranged side-by-side to reduce cross-talk between the twisted pairs. The cable also includes a first region having a first thickness disposed between two regions having a second thickness. These regions, or another structure located on the outer surface of the jacket, are arranged to prevent symmetric stacking of several communication cables and thus reduce alien cross-talk arising from outside of the communication cable.

Abstract: A cross web core in a high performance data cable maintains geometric stability between plural twisted pair transmission media and between each twisted pair and the cable jacket. The cross web core may further isolate twisted pairs from each other by including conductive or magnetically permeable materials. By so doing, loss, impedance and crosstalk performance are improved.

Abstract: A cable twisting method and apparatus, for forming double twisted pair cables. The invention longitudinally distributes the eccentricities of the individual cables, where the helical propagation of the eccentricity is not conformal to the helix formed by the geometric shape of the cables.

Abstract: A cable testing device apparatus has been developed so as to measure the NEXT and ELFEXT characteristics of a cable containing a plurality of twisted pairs. In particular, the present invention simultaneously provides each twisted pair within the cable with an electrical signal of equal magnitude and measuring the equivalent power sum output for each of the individual twisted pairs within the cable. Thus, a total of 25 measurements for each test are needed, for a total of 50 tests.