High speed cable

Abstract

The utility model discloses a high -speed cable, including at least one core line. The core line includes conductor and the insulator of covering on the conductor. The insulator includes a plurality of alternatingly arranged drop medium department and support part. The first passageway is set up to each drop medium department, and the first passageway is annular cavity with the coaxial setting of conductor. The first passageway is filled with air, can effectively reduce the dielectric constant of insulator, thereby reduces the medium loss of cable, promotes the communication bandwidth of cable. The support part is spacedly distributed in the inside of insulator, and all has the support part between adjacent two drop medium department, thereby improves the mechanical strength and the bending -resistance performance of cable, guarantees the reliability use of high -speed cable.

Description

Technical Field

[0001] This utility model relates to the field of communication cable technology, specifically to a high-speed cable. Background Technology

[0002] With the continuous development of high-speed communication, cables have become a core infrastructure connecting various electronic devices and communication systems. Cables typically consist of a conductor and an outer insulator, where the insulator not only provides electrical isolation but also directly affects the integrity of signal transmission. In high-speed communication, signal frequencies have exceeded millimeter waves and even terahertz levels, and the dielectric loss of the insulating material has gradually become the primary bottleneck limiting transmission performance, thus affecting the cable's transmission capabilities. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-speed cable that can effectively reduce dielectric loss and achieve high-speed signal interconnection.

[0004] This utility model proposes a high-speed cable, comprising: at least one core wire;

[0005] The core wire includes a conductor and an insulator covering the conductor;

[0006] The insulator includes several alternating dielectric-dropping sections and supporting sections. Each dielectric-dropping section has a first channel, which is an annular cavity coaxially arranged with the conductor.

[0007] In one embodiment, the channel is located inside the support portion, and at least one second channel is provided on the support portion, the second channel communicating with the first channel.

[0008] In one embodiment, the cross-section of the second channel is circular, rectangular, trapezoidal, or fan-shaped.

[0009] In one embodiment, the aperture of the second channel is smaller than that of the first channel.

[0010] In one embodiment, the support portion is a solid insulator.

[0011] In one embodiment, the insulator is a foamed insulator.

[0012] In one embodiment, the insulator has an inner sheath between it and the conductor, and the insulator is covered with an outer sheath.

[0013] In one embodiment, the core wire is covered with a shielding layer, and the shielding layer is covered with a protective layer.

[0014] In one embodiment, the high-speed cable further includes at least one ground wire electrically connected to the shielding layer;

[0015] The ground wire is located between the shielding layer and the protective layer, or

[0016] The ground wire is located between the shielding layer and the core wire.

[0017] In one embodiment, the shielding layer is copper foil, aluminum foil, or silver-plated copper foil; the protective layer is a Mylar layer.

[0018] The high-speed cable of this utility model includes at least one core wire. The core wire includes a conductor and an insulator covering the conductor. The insulator includes several alternately arranged dielectric drop sections and support sections. Each dielectric drop section has a first channel, which is an annular cavity coaxially arranged with the conductor. The first channel is filled with air, which effectively reduces the dielectric constant of the insulator, thereby reducing the dielectric loss of the cable and increasing its communication bandwidth. The support sections are spaced apart inside the insulator, with a support section between each adjacent dielectric drop section. The support sections provide internal support for the insulator, and thus provide support for the cable, thereby improving the mechanical strength and bending resistance of the cable and ensuring the reliable use of the high-speed cable. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the main structure of an embodiment of the core wire of this utility model;

[0021] Figure 2 This is an axial cross-sectional view of an embodiment of the high-speed cable of this utility model;

[0022] Figure 3 This is an axial cross-sectional view of an embodiment of the high-speed cable of this utility model (with a second channel);

[0023] Figure 4 This is a front view structural schematic diagram (single conductor) of an embodiment of the high-speed cable of this utility model;

[0024] Figure 5 This is a front view structural schematic diagram (multi-conductor) of an embodiment of the high-speed cable of this utility model;

[0025] Explanation of icon numbers:

[0026] 100 core wire 31 dielectric reduction portion 4 outer covering layer 1 conductor 31a first passage 5 shielding layer 2 inner covering layer 32 support portion 6 protective layer 3 insulator 32a second passage

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] This utility model proposes a high-speed cable. Please refer to... Figures 1 to 5The high-speed cable includes: at least one core wire 100; the core wire 100 includes a conductor 1 and an insulator 3 covering the conductor 1; the insulator 3 includes a plurality of alternating dielectric reduction portions 31 and support portions 32, each dielectric reduction portion 31 having a first channel 31a, the first channel 31a being an annular cavity coaxially arranged with the conductor 1.

[0033] In this embodiment, the high-speed cable may include one or more core wires 100. Each core wire 100 has a conductor 1, which is made of a conductive material and is used to transmit electrical signals. It is understood that the conductor 1 may be a bare copper conductor, a silver-plated copper conductor, etc., and there is no limitation thereto. The conductor 1 is covered by an insulator 3 for insulation protection. The insulator 3 may be made of materials such as FEP, PFA, PE, PP, etc., and may be made of solid plastic or foamed insulating material. Those skilled in the art can design according to actual conditions. Preferably, the insulator 3 is a foamed insulator. The extension direction of the conductor 1 is the signal transmission direction of the cable, and the extension direction of the insulator 3 is the same as the extension direction of the conductor 1. Preferably, when the cable has one conductor, the number of insulators 3 is also one, and the insulator 3 covers the conductor 1 and is coaxially arranged with the conductor 1. The insulator 3 has alternating descending portions 31 and supporting portions 32 along the axial direction. Each drop section 31 has a first channel 31a, which is an air-insulated structure and an annular cavity coaxially arranged with the conductor 1. It is understood that the extension direction of the first channel 31a is the same as the extension direction of the conductor 1. In the cross-sectional structure of the drop section 31, the first channel 31a is an annular groove structure recessed inward from the cross-section of the drop section 31. The cavity width of the first channel 31a can be designed according to actual needs. The first channel 31a is filled with air. It is understood that the dielectric constant of air is less than the dielectric constant of the material used in the drop section 31, meaning that filling the first channel 31a with air can effectively reduce the dielectric loss of the drop section 31, thereby reducing the signal propagation loss of the cable, which is beneficial to improving the cable communication bandwidth and realizing high-speed signal interconnection. Preferably, the cavity width of the first channel 31a is relatively large, resulting in a smaller wall thickness of the drop section 31, thereby minimizing the dielectric loss of the insulator 3. A support portion 32 is provided between two adjacent dielectric drop sections 31. The support portion 32 provides internal support for the insulator 3, effectively enhancing the internal mechanical strength and compression resistance of the cable. Preferably, the distance between two adjacent support portions 32 is greater than the distance between two adjacent dielectric drop sections 31. The alternating distribution of dielectric drop sections 31 and support portions 32 effectively ensures the mechanical reliability of the cable while reducing dielectric loss. Understandably, to further increase the bending resistance of high-speed cables, the axial length of the dielectric drop section 31 can be reduced, thereby making the arrangement of the support portions 32 more compact and ensuring the mechanical strength of the high-speed cable.

[0034] Furthermore, the support portion 32 may be a solid insulating structure or an insulating structure with several micropores.

[0035] In one embodiment, please refer to 3 to Figure 4 At least one second channel 32a is provided on the support portion 32. It is understood that the shape and number of the second channels 32a can be designed according to actual needs. The second channels 32a are located on the support portion 32 and are spaced apart from each other. Preferably, the extending direction of the second channels 32a is the same as the extending direction of the conductor 2. The second channels 32a are filled with air, which can further reduce the dielectric loss of the insulator 3.

[0036] Further, please refer to Figure 3 The second channel 32a is located within the support portion 32 and is a circumferentially closed structure. The cross-section of the second channel 32a can be designed as a circle, rectangle, trapezoid, or fan shape. The first channel 31a and the second channel 32a are connected, and the aperture of the second channel 32a is smaller than that of the first channel 31a. Air fills the interior of the first channel 31a and the second channel 32a, reducing dielectric loss caused by the insulating medium. The arrangement of the first channel 31a and the second channel 32a forms a dual dielectric loss suppression, which can maximize the dielectric loss reduction effect.

[0037] Preferably, depending on the different structural designs of the insulator 3, the insulator 3 can be integrally molded or segmented molded during the cable manufacturing process, so as to reduce the difficulty of molding the first channel 31a and the second channel 32a and facilitate cable production.

[0038] Furthermore, the length ratio of the dielectric reduction section 31 and the support section 32 extending axially can be designed according to actual needs, so as to optimize the reduction of dielectric loss while ensuring the mechanical strength of the cable.

[0039] Further, please refer to Figures 1 to 5 An inner sheath 2 is provided between the insulator 3 and the conductor 1, and an outer sheath 4 is provided to cover the insulator 3.

[0040] Specifically, the inner sheath 2 can be made of extruded polyolefin material, and the outer sheath 4 can be made of high-density polyethylene or cross-linked high-density polyethylene.

[0041] Further, please refer to Figures 4 to 5 The core wire 100 is covered with a shielding layer 5, and the shielding layer 5 is covered with a protective layer 6.

[0042] Specifically, an outer layer structure can be provided around the core wire 100 to protect it. Understandably, various structures can be chosen for the outer layer. Preferably, the outer layer consists of a shielding layer 5 and a protective layer 6. The shielding layer 5 can be made of materials such as copper foil, aluminum foil, or silver-plated copper foil; preferably, the shielding layer 5 is heat-fused self-adhesive. The shielding layer 5 covers the outer periphery of one or more core wires 100, effectively suppressing signal interference. Preferably, the shielding layer 5 is longitudinally wrapped. Understandably, multiple shielding layers 5 can be provided inside the cable to improve the shielding effect. The protective layer 6 can be made of Mylar or other flame-retardant materials, covering the outside of the shielding layer 5, providing mechanical protection for the entire cable, improving the cable's temperature resistance and flame-retardant performance, and enhancing the overall stability of the cable.

[0043] Understandably, the high-speed cable provided in this application also has a ground wire structure. The ground wire can be a single wire or multiple wires, and it is located between the protective layer 6 and the shielding layer 5, or between the shielding layer 5 and the core wire 100. The ground wire is electrically connected to the shielding layer 5 to provide grounding protection for the cable.

[0044] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A high-speed cable, characterized in that, include: At least one core wire (100); The core wire (100) includes a conductor (1) and an insulator (3) covering the conductor (1); The insulator (3) includes several alternating dielectric-lowering portions (31) and support portions (32). Each dielectric-lowering portion (31) has a first channel (31a), which is an annular cavity coaxially arranged with the conductor (1).

2. The high-speed cable as described in claim 1, characterized in that, Each of the support portions (32) is provided with at least one second channel (32a), which is connected to the first channel (31a).

3. The high-speed cable as described in claim 2, characterized in that, The second channel (32a) has a cross-section that is circular, rectangular, trapezoidal or fan-shaped.

4. The high-speed cable as described in claim 2, characterized in that, The aperture of the second channel (32a) is smaller than that of the first channel (31a).

5. The high-speed cable as described in claim 1, characterized in that, The support part (32) is a solid insulator.

6. The high-speed cable as described in claim 1, characterized in that, The insulator (3) is a foamed insulator.

7. The high-speed cable as described in claim 6, characterized in that, The insulator (3) has an inner sheath (2) between it and the conductor (1), and the insulator (3) is covered with an outer sheath (4).

8. The high-speed cable as described in claim 1, characterized in that, The core wire (100) is covered with a shielding layer (5), and the shielding layer (5) is covered with a protective layer (6).

9. The high-speed cable as described in claim 8, characterized in that, It also includes at least one ground wire, which is electrically connected to the shielding layer (5); The ground wire is located between the shielding layer (5) and the protective layer (6), or The ground wire is located between the shielding layer (5) and the core wire (100).

10. The high-speed cable as described in claim 8, characterized in that, The shielding layer (5) is copper foil, aluminum foil or silver-plated copper foil; the protective layer (6) is a Mylar layer.

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