KR101225572B1 - Utp cable for high speed communication - Google Patents

Abstract

PURPOSE: A UTP cable for high speed communication is provided to reduce the influence by external interference. CONSTITUTION: A twisted wire part comprises two or more covered conducting wires. A separator partitions the twisted wire part using vertical wall(122) and horizontal walls(124,126). A sheath part(130) surrounds the twisted wire part and separator. Protrusions(142,144,146,148) are formed in the upper end and lower end of the vertical wall. The protrusion separates first area to fourth area(Z1-Z4) from the end of vertical wall.

Description

UTP cable for high speed communication {UTP CABLE FOR HIGH SPEED COMMUNICATION}

The present invention relates to a UTP cable for performing high-speed communication, and more particularly to a UTP cable for high-speed communication that can balance the crosstalk phenomenon caused by internal interference and minimize the influence of external interference.

In general, UTP (Unshielded Twisted Pair) cable is used as a cable for data communication in Ethernet. UTP cable is weak compared to the conventional shielded twisted pair (STP) cable because it is weak to noise, but is widely used due to its low cost.

1 is a cross-sectional view of a conventional UTP cable. Referring to FIG. 1, a UTP cable generally spirally twists conductive wires 16 formed by covering a conductor 12 such as copper with an insulator 14 to form a stranded wire part 10, and connects the stranded wire part 10 to 4. It is configured in such a way that a combination of about two pieces is incorporated in the sheath portion 20. Typically, the stranded portion 10 is partitioned by a separator 30 called a cross filler to prevent crosstalk due to line twist and internal interference.

As the conventional UTP cable uses a half duplex transmission method, only two pairs of four twisted pairs 10 partitioned in the sheath 20 are used for transmission and reception purposes, and the remaining two pairs It is reserved for use with voice communication. In this method, the internal crosstalk phenomenon can be prevented only by lowering the internal interference between the twisted pairs 10 inside the cable. Until recently, research has focused on reducing the internal crosstalk phenomenon.

However, full duplex transmission is used since 100Base-TX Ethernet technology, and all four pairs of twisted pair 10 are used for data transmission and reception purposes. In general, the inherent performance of the cable in the data communication cable is judged as Worst Margin, not Best Margin. Therefore, in recent high-speed communications, it is necessary not only to reduce internal crosstalk but also to improve the balance of crosstalk by satisfactory Worst Margin. This is rising.

In addition, according to the 802.3an 10G Base-T network standard, the operating frequency of the cable is extended to 500MHz or more, and as a high transmission speed of 10Gbps is required, crosstalk between paired pairs inside the cable as well as external interference between adjacent cables Alien Crosstalk is an important factor. This is because crosstalk caused by extraterrestrial interference between cables causes data loss, distortion, and slows down the signal transmission rate.

SUMMARY OF THE INVENTION An object of the present invention is to provide a UTP cable for high speed communication in which not only the crosstalk phenomenon caused by the internal interference of the cable is reduced but also the balance of the crosstalk phenomenon is improved to improve the transmission capability.

In addition, the present invention differentiates the separation distance between the inner surface of the sheath portion and the twisted pair portions by a simple structure improvement that forms an asymmetrically protruding protrusion at the end of the separator, thereby minimizing the external interference between cables without significantly increasing the outer diameter of the cable. It is to provide a high speed communication UTPI cable suitable for 10Gbps high speed communication.

The UTP cable for high speed communication according to an embodiment of the present invention includes: a twisted pair portion in which at least two conductive wires are insulated and coated; A separator for protruding at least one horizontal wall to both sides of the vertical wall to divide the stranded wire into a plurality of regions; And a sheath part surrounding the stranded part and the separator, wherein horizontal walls of both sides of the separator protrude asymmetrically with respect to the vertical wall.

In the UTP cable for high-speed communication according to another embodiment of the present invention, two twisted pairs having the longest distance in the diagonal among the twisted pairs partitioned by the vertical wall of the separator have the smallest difference in the pitch between the other twisted pairs. .

In the UTP cable for high speed communication according to another embodiment of the present invention, the twisted pair includes a first twisted pair, a second twisted pair, a third twisted pair, and a fourth twisted pair having different large pitches. The length has a long value in order of the first twisted pair, the second twisted pair, the third twisted pair, and the fourth twisted pair.

In the UTP cable for high-speed communication according to another embodiment of the present invention, the second twisted pair and the third twisted pair are respectively disposed in two regions having the longest distance apart from each other by the vertical walls of the separator.

In the UTP cable for high speed communication according to still another embodiment of the present invention, a protrusion is formed at the end of the vertical wall of the separator to separate the stranded portion from the inner surface of the sheath portion.

In the UTP cable for high speed communication according to another embodiment of the present invention, the protrusion protrudes to both the upper end and the lower end of the vertical wall, and protrudes asymmetrically to correspond to the horizontal wall.

In the UTP cable for high-speed communication according to another embodiment of the present invention, the twisted portion having the longest pitch is disposed in the region having the longest distance from the inner surface of the sheath portion by the protrusion.

According to an embodiment of the present invention, a UTP cable for high speed communication may include: four twisted pairs having at least two conductive wires twisted with insulation coating; Horizontal walls protrude to both sides of the vertical wall so that the stranded wire is divided into four regions of the first region, the second region, the third region, and the fourth region divided by the vertical wall and the horizontal wall. The horizontal wall is a separator in which both sides protrude asymmetrically with respect to the vertical wall; A sheath portion surrounding the stranded portion and the separator; And protrusions protruding from both the upper end and the lower end of the vertical wall of the separator, respectively, to separate the first to fourth areas from the inner surface of the sheath part.

In the UTP cable for high speed communication according to another embodiment of the present invention, the protrusions protrude in an asymmetrical form on both sides of the vertical wall at both ends of the vertical wall, so that at least two areas of each of the areas where the twisted pair is disposed. The differential distance between the inner surface of the sheath portion and the stranded portion is to be differential.

In the UTP cable for high-speed communication according to another embodiment of the present invention, the maximum separation distance between the twisted pair part and the inner surface of the sheath part in each of the first to fourth areas satisfies the following conditional expression (1).

(Condition 1) d1 ≥ d3> d2 ≥ d4

Here, d1: maximum separation distance between the stranded portion and the inner surface of the sheath portion in the first region

d2: maximum separation distance between the stranded part and the inner side of the sheath part in the second area;

d3: maximum separation distance between the stranded part and the inner surface of the sheath part in the third region;

d4: maximum separation distance between the stranded part and the inner side of the sheath part within the fourth area;

In the UTP cable for high speed communication according to another embodiment of the present invention, a twisted pair having the largest pitch is disposed in the first region.

In the UTP cable for high-speed communication according to another embodiment of the present invention, twisted pairs are arranged in the order of large pitches in order of the first region, the third region, the second region, and the fourth region.

In the UTP cable for high-speed communication according to still another embodiment of the present invention, twisted pairs having the smallest difference between the large pitches are disposed in the second area and the third area, respectively.

According to the UTP cable for high-speed communication of the present invention, the internal interference between twisted pairs is differentially arranged by displacing the areas on both sides of the vertical wall through a simple structure that asymmetrically protrudes the horizontal wall of the separator. It is effective in improving the balance of crosstalk due to the improvement of Worst Margin and improving the cable transmission capability.

In addition, according to the present invention, by forming a projection protruding asymmetrically at the end of the vertical wall of the separator, it is possible to space the stranded portion vulnerable to extraterrestrial interference with the inner surface of the sheath portion as much as possible without significantly increasing the outer diameter of the cable, thereby In addition to reducing the effects of the interference, it is possible to improve the Worst Margin of crosstalk due to external interference, and thus has a high transmission capability in high-speed communication at 10Gbps.

1 is a cross-sectional view of a conventional UTP cable,
2 is a cross-sectional view of a UTP cable for high speed communication according to an embodiment of the present invention;
3 is a perspective view illustrating a structure of a stranded portion;
4 is a cross-sectional view of a UTP cable for high speed communication according to another embodiment of the present invention, and
5 is a cross-sectional view illustrating a use state of the embodiment of FIG. 4.

Hereinafter, specific embodiments according to the present invention will be described with reference to the accompanying drawings. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Parts having similar configurations and operations throughout the specification are denoted by the same reference numerals. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

In describing the embodiments in detail, overlapping descriptions or descriptions of obvious technology in the art are omitted. Also, in the following description, when a section is referred to as "comprising " another element, it means that it may further include other elements in addition to the described element unless otherwise specifically stated.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component.

2 is a cross-sectional view of a UTP cable for high speed communication according to an embodiment of the present invention. Referring to FIG. 2, the UTP cable for high-speed communication of the present invention includes a separator 120 for partitioning and arranging at least one twisted pair part 110 and twisted pair part 110 in which at least two insulation coated wires are spirally twisted. ), And the sheath portion 130 surrounding the stranded portion 110 and the separator 120.

As shown in FIG. 3, the stranded wire part 110 is a conductive wire formed by spirally twisting at least two conductive wires 110a and 110b coated with an insulator. In FIG. 2, four twisted pairs 110 are disposed in the sheath 130, but as one embodiment, various modifications are possible. For example, the twisted pair part 110 may be arranged in a combination of four or more.

Referring to FIG. 3, a unit pitch in which two conductive wires 110a and 110b are twisted in the twisted pair part 110 is referred to as a large pitch p. In general, when the large pitch p is the same or similar within the cable, crosstalk due to internal interference is likely to occur, and thus the large pitch p is formed differently for each twisted line part 110. For example, the large pitch p of the twisted pairs 110 may have a difference of 0.1 mm or more.

The separator 120 partitions the twisted pairs 110 to prevent electrical interference between the twisted pairs 110. For example, the separator 120 suppresses electromagnetic induction between the twisted pairs 110 and prevents crosstalk between the twisted pairs 110. The separator 120 is made of an insulator, and as is known, polyethylene (PE; PolyEthylene), polypropylene (PP; PolyPropylene), polyvinyl chloride (PVC; PolyVinyl Chloride), or a mixture thereof is used.

The sheath 130 is a coating covering the stranded wire 110 and the separator 120, and protects the stranded wire 110 and the separator 120 from external impact. In order to prevent external interference between the cables, the sheath 130 is made of PE, PP, PVC, LSZH (Low Smoke Zero Halogen), or olefin (Olefin) -based polymer material.

2, in the UTP cable for high speed communication according to the present invention, the separator 120 has a unique structure. The separator 120 divides the cable inner space into two sides, and the horizontal wall 124 protrudes to both sides of the vertical wall 122 so as to divide the vertical wall 122 into two spaces. 126). Here, the horizontal walls 124 and 126 are asymmetrically protruded from the left horizontal wall 124 and the right horizontal wall 126 with respect to the vertical wall 122 as shown. That is, the four spaces partitioned by the separator 120 inside the cable are formed so that the left and right spaces are shifted based on the vertical wall 122.

Meanwhile, in the example of FIG. 2, the division of vertical, horizontal, vertical, horizontal, and the like is merely an example to help understanding of the present invention. In addition, the horizontal walls 124 and 126 asymmetrically protruding to both sides of the vertical wall 122 may be installed in larger numbers, thereby partitioning the cable inner space into more space.

In FIG. 2, twisted pairs 110 are disposed in four spaces partitioned from the separator 120. For convenience of description, the space located at the upper left of the four spaces is called the first region Z1, and the remaining spaces are clockwise in the second region Z2, the third region Z3, and the fourth region Z4. This will be called. In addition, the twisted pair part 110 is referred to as the first twisted pair part 112 having the longest length of the large pitch p, and then the second twisted pair part in the longest order of the large pitch p. Reference numeral 114 denotes a third twisted pair 116 and a fourth twisted pair 118.

According to the structural features of the separator 120, the second region Z2 and the fourth region Z4 have the longest separation distance in the cable. Preferably, two twisted pairs having the smallest difference in pitch (or the same pitch) are arranged in the second region Z2 and the fourth region Z4, respectively. In such an arrangement, there is an advantage of minimizing crosstalk due to internal interference between twisted pairs inside the cable.

However, since the first region Z1 and the third region Z3 are disposed adjacent to each other as shown in the drawing, the first region Z1 and the third region Z3 have a very small separation distance within the cable. Accordingly, crosstalk between the first region Z1 and the third region Z3 having such a small distance is relatively large.

That is, in a more preferred embodiment, as shown in FIG. 2, the first twisted pair 112 is disposed in the first region Z1, and the fourth twisted pair 118 is disposed in the third region Z3. do. In addition, a second twisted pair part 114 and a third twisted pair part 116 are disposed in the second region Z2 and the fourth region Z4, respectively.

In this arrangement structure, internal interference between the second twisted pair part 114 and the third twisted pair part 116 is minimized, and the first twisted pair Z1 and the third zone Z3 are located relatively close together. By arranging the first twisted pair portion 112 and the fourth twisted pair portion 118 having the largest difference in pitch, it is possible to optimally design a balance of crosstalk phenomena due to internal interference inside the cable. In addition, it is possible to improve the Worst Margin of the cable performance.

4 shows another embodiment of the present invention. Referring to FIG. 4, the structure in which the separator 120 has vertical walls 122 and asymmetric horizontal walls 124 and 126 in the sheath 130 is the same as the embodiment of FIG. 2.

Here, protrusions 142, 144, 146, and 148 protruding to both sides are formed at upper and lower ends of the vertical wall 122, respectively. At the end of the vertical wall 122, the protrusion serves to separate the above-mentioned areas Z1 to Z4 from the inner surface of the sheath part 130. Preferably, the protrusions 142, 144, 146, and 148 have a shape protruding asymmetrically with respect to the vertical wall 122 to correspond to the horizontal wall as shown in FIG. 4. One surface of the protrusion divides the first region Z1 to the fourth region Z4, and the other surface is in close contact with the inner surface of the sheath portion 130.

Hereinafter, the protrusion that divides the first region Z1 is called the first protrusion 142, the protrusion that divides the second region Z2 is called the second protrusion 144, and the third region Z3 is divided. The protrusion to be called is the third protrusion 146, and the protrusion that divides the fourth region Z4 will be referred to as a fourth protrusion 148. In addition, as shown in the drawing, the maximum separation distance between the first region Z1 by the first protrusion 142 and the inner surface of the sheath 130 is referred to as d1, and the second region by the second protrusion 144 ( The maximum separation distance between Z2) and the inner surface of the sheath portion 130 is d2, and the maximum separation distance between the third region Z3 and the inner surface of the sheath portion 130 by the third protrusion 146 is d3. The maximum separation distance between the fourth region Z4 and the inner surface of the sheath portion 130 by the fourth protrusion 148 is referred to as d4.

The maximum separation distance d1 to d4 is equal to the maximum separation distance between the stranded part and the sheath 130 located on the inner side of each region. D1 to d4 satisfy the following conditional expression (1).

(Condition 1) d1 ≥ d3> d2 ≥ d4

According to Conditional Expression 1, the first region Z1 has the longest separation distance from the inner surface of the sheath portion 130. In addition, the first twisted pair part 112 is disposed in the first region Z1 having the longest separation distance. Therefore, the twisted pair, which is most vulnerable to external interference, may be spaced apart from the inner side of the sheath 130 to the maximum.

5 illustrates one of the environments where UTP cables are very vulnerable to extraterrestrial interference. For example, suppose that a plurality of UTP cables are located in the duct, as shown in FIG. . In this case, the first twisted pair 112 positioned in the first region Z1 in the core cable 150 has the longest separation distance from the inner surface of the sheath 130, and each of the external cables 151 to 156. In addition, since the large twisted pitch also corresponds to the longest twisted pair (the twisted pair in the same condition as the first twisted pair inside the core cable), ultimately, crosstalk due to external interference can be minimized.

Here, as shown in FIG. 4, the biggest advantage of forming the protrusion at the end of the separator is that the size difference between the first region Z1 and the second region Z2 is maximized while configuring the structure of the separator as in the embodiment of FIG. 2. It is used. This space utilization does not significantly increase the outer diameter of the cable compared to the structure of forming a plurality of protrusions inside the sheath portion 130 to separate all strands, and also simplify the cable manufacturing process, it is possible to prevent alien interference. Is that there is.

Meanwhile, in the embodiment shown in FIG. 4, unlike the embodiment of FIG. 2, the second twisted pair part 114 is disposed in the third region Z3, and the third twisted pair part 116 is disposed in the second region Z2. Is disposed, and the fourth twisted pair portion 118 is disposed in the fourth region Z4. This arrangement structure is configured to minimize crosstalk due to external interference as compared to internal interference. In places where crosstalk due to external interference is severe as shown in FIG. 5, a cable may be configured as in the embodiment of FIG. 4.

As another example, the twisted pair arrangement of FIG. 2 may be appropriately combined with the embodiment of FIG. 4. For example, the first twisted pair 112 having the longest pitch is disposed in the first region Z1, and the third twisted pair 116 is disposed in the third region Z3, which is a diagonal position. It may be configured to prevent external interference while appropriately adjusting the crosstalk caused by crosstalk.

The invention described above is susceptible to various modifications within the scope not impairing the basic idea. In other words, all of the above embodiments should be interpreted by way of example and not by way of limitation. Therefore, the scope of protection of the present invention should be determined in accordance with the appended claims rather than the above-described embodiments, and should be construed as falling within the scope of the present invention when the constituent elements defined in the appended claims are replaced by equivalents.

110: twisted pair 112: first twisted pair
114: second twisted pair 116: third twisted pair
118: fourth twisted pair 120: separator
122: vertical wall 124, 126: horizontal wall
130: sheath portion 142: first projection portion
144: second projection 146: third projection
148: fourth protrusion 150: core cable
151 ~ 156: External cable
Z1: first region Z2: second region
Z3: third region Z4: fourth region

Claims (13)

delete delete delete delete delete delete delete Four twisted pairs of at least two insulated conductors twisted;
Horizontal walls protrude to both sides of the vertical wall to partition the stranded portion by the vertical wall and the horizontal wall, the first area being located at the upper left, and the second area sequentially located along the clockwise direction of the first area; A separator configured to be partitioned into four regions of a third region and a fourth region, wherein the horizontal wall is asymmetrically protruded from both sides with respect to the vertical wall;
A sheath portion surrounding the stranded portion and the separator; And
Protrusions protruding from both the upper and lower end portions of the vertical wall of the separator to both sides to separate the first to fourth regions from the inner surface of the sheath portion, respectively.
Including;
The protrusions protrude in an asymmetrical form on both sides of the end of the vertical wall to correspond to the horizontal wall, so that the distance between the inner side of the sheath and the stranded wires is differential in at least two of the regions where the stranded wires are arranged. High speed communication UTP cable. delete 9. The method of claim 8,
The maximum separation distance between the twisted pair part and the inner side of the sheath part in each of the first region to the fourth region satisfies the following Conditional Expression 1.
(Condition 1) d1 ≥ d3> d2 ≥ d4
Here, d1: maximum separation distance between the stranded portion and the inner surface of the sheath portion in the first region
d2: maximum separation distance between the stranded part and the inner side of the sheath part in the second area;
d3: maximum separation distance between the stranded part and the inner surface of the sheath part in the third region;
d4: maximum separation distance between the stranded part and the inner side of the sheath part within the fourth area; The method of claim 10,
The twisted pair cable having the largest large pitch is disposed in the first area. The method of claim 11,
The first cable, the third area, the second area, the fourth area UTP cable for high-speed communication, characterized in that the twisted pair is arranged in the order of the large pitch. The method according to claim 10 or 11,
The second and third areas of the UTP cable for high-speed communication, characterized in that the twisted pair having the smallest difference in pitch.

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