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US 2018/0286539 A1Published application
High performance data communications cable
AssigneeBelden Inc.
InventorsAndrew John Wehrli, William Thomas Clark, Galen Mark Gareis, Douglas David Brenneke
Life of this patent
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Abstract
Two electromagnetic interference (EMI) controlling tape application methodologies for unshielded twisted pair (UTP) cable include Fixed Tape Control (FTC) and Oscillating Tape Control (OTC). In FTC, tape application angle and edge placement are controlled to maintain position of the tape edges over a base of nonconductive filler in the cable. In OTC, the tape application angle is continuously varied, resulting in crossing of the tape edges over all of the pairs of conductors with varying periodicity. In both implementations, the filler allows a cylindrical shape.
Claims100
A cable for reducing alien cross-talk and return loss between adjacent twisted pairs of conductors comprising:
- a first twisted pair of conductors having a first side portion and a first outwardly facing portion;
- a second twisted pair of conductors having a second side portion and a second outwardly facing portion;
- a filler member configured to non-conductively shield the first side portion of the first twisted pair of conductors from the second side portion of the second twisted pair of conductors so as to reduce alien cross-talk and return loss between the first and second twisted pairs of conductors during operation of the cable;
- a barrier tape configured to encircle the filler member and the first and second outwardly facing portions of the first and second twisted pairs of conductors so as to non-conductively shield the first and second outwardly facing portions of the first and second twisted pairs of conductors so as to reduce alien cross-talk and return loss between the first and second twisted pairs of conductors during operation of the cable;
- a jacket configured to encircle the barrier tape;
- wherein the second twisted pair of conductors is located adjacent to a portion of the filler member, and wherein the first twisted pair of conductors is located adjacent to the portion of the filler member;
- wherein the barrier tape includes a non-conductive layer and a conductive layer;
- wherein the conductive layer of the barrier tape includes a first conductively exposed seam portion and a second conductively exposed seam portion;
- wherein the first conductively exposed seam portion of the conductive layer of the barrier tape can be electrically coupled with the first twisted pair of conductors when the first conductively exposed seam portion of the conductive layer is located radially outward from the first twisted pair of conductors and when the first conductively exposed seam portion of the conductive layer is not non-conductively shielded from the first twisted pair of conductors;
- wherein the second conductively exposed seam portion of the conductive layer of the barrier tape can be electrically coupled with the second twisted pair of conductors when the second conductively exposed seam portion of the conductive layer is located radially outward from the second twisted pair of conductors and when the second conductively exposed seam portion of the conductive layer is not non-conductively shielded from the second twisted pair of conductors;
- wherein the filler member includes a first terminal portion and a second terminal portion;
- wherein the first terminal portion of the filler member is configured to intervene between the first conductively exposed seam portion of the conductive layer of the barrier tape and the first twisted pair of conductors when the first conductively exposed seam portion of the conductive layer of the barrier tape is located radially outward from the first terminal portion of the filler member and not located radially outward from the first twisted pair of conductors so as to reduce alien cross-talk and return loss between the first and second twisted pairs of conductors during operation of the cable by separating the first conductively exposed seam portion of the conductive layer of the barrier tape at a distance from the first twisted pair of conductors;
- wherein the second terminal portion of the filler member is configured to non-conductively shield the second conductively exposed seam portion of the conductive layer of the barrier tape from the second twisted pair of conductors when the second conductively exposed seam portion of the conductive layer of the barrier tape is located radially outward from the second terminal portion of the filler member and not located radially outward from the second twisted pair of conductors so as to reduce alien cross-talk and return loss between the first and second twisted pairs of conductors during operation of the cable by non-conductively shielding the second conductively exposed seam portion of the conductive layer of the barrier tape from being electrically coupled with the second twisted pair of conductors;
- wherein the filler member is made of a non-conductive material;
- wherein the filler member includes a plurality of arms that are each configured to radially extend outwardly so as to form a first channel shaped to partially enclose the first twisted pair of conductors and a second channel shaped to partially enclose the second twisted pair of conductors;
- wherein the non-conductive layer of the barrier tape includes a first non-conductive edge surface and second non-conductive edge surface, and the conductive layer of the barrier tapes includes a first conductive edge surface that is radially aligned with the first non-conductive edge surface so as to form the first conductively exposed seam portion, and a second conductive edge surface that is radially aligned with the second non-conductive edge surface so as to form the second conductively exposed seam portion;
- wherein the first terminal portion of the filler member includes a first outwardly facing terminal surface, the second terminal portion of the filler member includes a second outwardly facing terminal surface, and the barrier tape is configured to encircle the first and second outwardly facing terminal surfaces and the first and second twisted pairs of conductors so as to reduce alien cross-talk and return loss between the first and second twisted pairs of conductors during operation of the cable;
- wherein the first outwardly facing terminal surface of the first terminal portion of the filler member is configured to non-conductively shield the first conductively exposed seam portion of the conductive layer of the barrier tape from the first twisted pair of conductors when the first conductively exposed seam portion of the conductive layer of the barrier tape is located radially outward from the first outwardly facing terminal surface of the first terminal portion of the filler member and not located radially outward from the first twisted pair of conductors so as to reduce alien cross-talk and return loss between the first and second twisted pairs of conductors during operation of the cable by non-conductively shielding the first conductively exposed seam portion of the conductive layer of the barrier tape from being electrically coupled with the first twisted pair of conductors;
- wherein the second outwardly facing terminal surface of the second terminal portion of the filler member is configured to non-conductively shield the second conductively exposed seam portion of the conductive layer of the barrier tape from the second twisted pair of conductors when the second conductively exposed seam portion of the conductive layer of the barrier tape is located radially outward from the second outwardly facing terminal surface of the second terminal portion of the filler member and not located radially outward from the second twisted pair of conductors so as to reduce alien cross-talk and return loss between the first and second twisted pairs of conductors during operation of the cable by non-conductively shielding the second conductively exposed seam portion of the conductive layer of the barrier tape from being electrically coupled with the second twisted pair of conductors;
- and
- wherein the filler member is configured to extend along a longitudinal portion of the cable and is configured to reduce alien cross-talk and return loss between the first and second twisted pairs of conductors along the longitudinal portion of the cable by non-conductively shielding the first and second twisted pairs of conductors from being electrically coupled to each other along the longitudinal portion of the cable.
18 more elements
A cable for reducing electromagnetic interference between pairs of conductors in the cable comprising:
- a first pair of conductors;
- a second pair of conductors;
- a non-conductive filler member configured to non-conductively separate the first pair of conductors from the second pair of conductors so as to reduce electromagnetic interference between the first and second pairs of conductors during operation of the cable;
- a multi-layer barrier tape configured to encircle the non-conductive filler member and the first and second pairs of conductors so as to conductively shield the first and second pairs of conductors and reduce electromagnetic interference between the first and second pairs of conductors during operation of the cable;
- wherein the multi-layer barrier tape includes a first conductively exposed seam portion and a second conductively exposed seam portion;
- wherein the first conductively exposed seam portion of the multi-layer barrier tape can be electrically coupled with the first pair of conductors when the first conductively exposed seam portion is located radially outward from the first pair of conductors and when the first conductively exposed seam portion is not shielded from the first pair of conductors;
- wherein the second conductively exposed seam portion of the multi-layer barrier tape can be electrically coupled with the second pair of conductors when the second conductively exposed seam portion is located radially outward from the second pair of conductors and when the second conductively exposed seam portion is not shielded from the second pair of conductors;
- wherein the non-conductive filler member includes a first terminal portion and a second terminal portion;
- wherein the first terminal portion of the non-conductive filler member is configured to non-conductively shield the first conductively exposed seam portion of the multi-layer barrier tape from the first pair of conductors when the first conductively exposed seam portion of the multi-layer barrier tape is located radially outward from the first terminal portion of the non-conductive filler member and not located radially outward from the first pair of conductors so as to reduce electromagnetic interference between the first and second pairs of conductors during operation of the cable by non-conductively shielding the first conductively exposed seam portion multi-layer barrier tape from being electrically coupled with the first pair of conductors;
- wherein the second terminal portion of the non-conductive filler member is configured to non-conductively shield the second conductively exposed seam portion of the multi-layer barrier tape from the second pair of conductors when the second conductively exposed seam portion of the multi-layer barrier tape is located radially outward from the second terminal portion of the non-conductive filler member and not located radially outward from the second pair of conductors so as to reduce electromagnetic interference between the first and second pairs of conductors during operation of the cable by non-conductively shielding the second conductively exposed seam portion of the multi-layer barrier tape from being electrically coupled with the second pair of conductors;
- and
- wherein the non-conductive filler member and the multi-layer barrier tape are configured to reduce electromagnetic interference between the first and second pairs of conductors of the cable by non-conductively shielding the first and second pairs of conductors from being electrically coupled to each other and by non-conductively shielding the first and second conductively exposed seam portions of the conductive layer of the multi-layer barrier tape from being electrically coupled with the first and second pairs of conductors.
9 more elements
A cable having reduced electromagnetic cross-talk between conductor pairs comprising:
- a filler portion configured to electromagnetically separate a first conductor pair from a second conductor pair so as to reduce electromagnetic cross-talk between the first and second conductor pairs during operation of the cable;
- a barrier portion configured to encircle the filler portion and the first and second conductor pairs so as to non-conductively shield the first and second conductor pairs and reduce electromagnetic cross-talk between the first and second conductor pairs during operation of the cable;
- wherein the barrier portion includes a conductively exposed seam portion that can be electrically coupled with the first conductor pair when the conductively exposed seam portion is located radially outward from the first conductor pair and when the conductively exposed seam portion is not shielded from the first conductor pair;
- wherein the filler portion includes a terminal portion that is configured to non-conductively shield the conductively exposed seam portion from the first conductor pair when the conductively exposed seam portion is located radially outward from the terminal portion and not located radially outward from the first conductor pair so as to reduce electromagnetic cross-talk between the first and second conductor pairs during operation of the cable by non-conductively shielding the conductively exposed seam portion from being electrically coupled with the first and second conductor pairs;
- wherein the filler portion and the barrier portion are configured to reduce electromagnetic cross-talk between the first and second conductor pairs of the cable by non-conductively shielding the first and second conductor pairs from being electrically coupled to each other and by non-conductively shielding the conductively exposed seam portion of the barrier portion;
- and
- wherein the filler portion and the barrier portion are configured to extend along a longitudinal portion of the cable so as to reduce electromagnetic cross-talk between the first and second conductor pairs along the longitudinal portion of the cable.
4 more elements
A cable having reduced electromagnetic cross-talk between conductor pairs comprising:
- filler means for electromagnetically separating a first conductor pair from a second conductor pair so as to reduce electromagnetic cross-talk between the first and second conductor pairs during operation of the cable;
- barrier means for encircling the filler means and the first and second conductor pairs so as to shield the first and second conductor pairs and reduce electromagnetic cross-talk between the first and second conductor pairs during operation of the cable;
- wherein the barrier means includes a conductively exposed seam portion that can be electrically coupled with the first conductor pair when the conductively exposed seam portion is located radially outward from the first conductor pair and when the conductively exposed seam portion is separated from the first conductor pair;
- wherein the filler means includes terminal means for separating the conductively exposed seam portion from the first conductor pair when the conductively exposed seam portion is located radially outward from the terminal means and not located radially outward from the first conductor pair so as to reduce electromagnetic cross-talk between the first and second conductor pairs during operation of the cable by preventing the conductively exposed seam portion from being electrically coupled with the first and second conductor pairs;
- wherein the filler means and the barrier means are configured to reduce electromagnetic cross-talk between the first and second conductor pairs of the cable by non-conductively shielding the first and second conductor pairs from being electrically coupled to each other and by non-conductively shielding the conductively exposed seam portion of the barrier means;
- and
- wherein the filler means and the barrier means are configured to extend along a longitudinal portion of the cable so as to reduce electromagnetic cross-talk between the first and second conductor pairs along the longitudinal portion of the cable.
4 more elements
Dependencies are inferred from the claim text.