High-flexibility ultralow-loss high-speed cable

Abstract

The utility model discloses a high-flexibility ultra-low-loss high-speed cable, which comprises two signal conductors arranged in parallel, the two signal conductors are wrapped by a common insulator, the outer side of the common insulator is wrapped by a metal wrapping layer, the outer side of the metal wrapping layer is wrapped by a first non-metal wrapping layer, and the outer side of the first non-metal wrapping layer is wrapped by a second non-metal wrapping layer. And the outer side of the first non-metal coating layer is coated with a second non-metal coating layer. According to the utility model, the two signal conductors share one eye-shaped low-loss insulator, one-time extrusion is realized, the structure is stable, the flexibility is good, and the anti-extrusion capability of the parallel pair is enhanced; meanwhile, the insertion loss can be improved, and differential common-mode conversion is realized; the nonmetal coating belt is wound and coated outside the metal shielding belt to prevent the metal shielding belt from loosening to cause the stability of the shielding performance.

Description

Technical Field

[0001] This utility model relates to the field of high-speed cable technology, specifically a highly flexible, ultra-low loss high-speed cable. Background Technology

[0002] As the communication demands of high-speed interconnected data centers continue to evolve, the requirements for signal processing, bandwidth, and transmission density are increasing daily. Today, cloud data centers handle approximately 5 trillion gigabytes of data traffic annually, and with the development of 5G, IoT, and connected vehicles, the future data traffic will be enormous. To meet this rapidly growing bandwidth demand, higher signal transmission speeds, greater bandwidth, and stronger interconnect density are required. This presents a significant challenge to data center interconnect solutions.

[0003] In the field of high-speed cable transmission, the traditional high-speed cable structure involves extruding a layer of insulation from a single conductor to form an insulated single-core wire. Then, two single-core wires are arranged in parallel, shielded with aluminum foil, and wrapped with PET to form a single pair. Because the two cables forming a single pair do not cross or twist each other, they are also called "parallel pairs".

[0004] Adding shielding (aluminum foil and ground wire) to the parallel pair has a good effect on electromagnetic interference (EMI), so it has excellent signal transmission capability in high-speed data transmission, and the transmission rate can reach more than 25Gbps.

[0005] Traditional parallel-pair high-speed cables consist of two separate insulated cores, shielded with metal tape and wrapped with self-adhesive polyester tape. The two insulated cables are bound together by the tension of the outer aluminum foil and PET tape. If the binding tension is too low, the binding is not strong enough, resulting in an unstable physical structure. This is especially problematic under static and dynamic bending conditions, which can alter the transmitted high-frequency signal (deteriorating attenuation and reducing the conversion between differential and common-mode signals), thus limiting the cable's transmission rate. Conversely, high binding tension can cause deformation of the insulated cores, further degrading the transmission of high-frequency signals. Utility Model Content

[0006] The purpose of this invention is to provide a highly flexible, ultra-low loss, high-speed cable to solve the problems in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a highly flexible, ultra-low loss, high-speed cable, comprising two parallel signal conductors, the two signal conductors being wrapped by a common insulator, the outside of the common insulator being covered with a metal cladding layer, the outside of the metal cladding layer being covered with a first non-metallic cladding layer, and the outside of the first non-metallic cladding layer being covered with a second non-metallic cladding layer.

[0008] Preferably, the signal conductor has a size of 38AWG-26AWG.

[0009] Preferably, the common insulator is eye-shaped, and the common insulator material is PE insulator, PP insulator, or FEP insulator.

[0010] Preferably, the metal cladding layer is a composite strip formed by a metal layer and a non-metal layer or a pure metal strip.

[0011] Preferably, the metal cladding layer is applied longitudinally or wrapped around the surface.

[0012] Preferably, it also includes a ground wire, which is located outside the metal cladding layer and is in contact with the metal cladding layer.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Two signal conductors share a single eye-shaped low-loss insulator, which is extruded in one piece, resulting in a stable structure, good flexibility, and enhanced resistance to extrusion of the parallel pair; at the same time, it can improve insertion loss and differential common-mode conversion.

[0015] 2. Non-metallic covering tape is wrapped around the outside of the metal shielding tape to prevent the metal shielding tape from loosening and affecting the stability of the shielding performance. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention;

[0018] Figure 2 This is a structural schematic diagram of Embodiment 2 of this utility model.

[0019] In the diagram: 1. Signal conductor; 2. Common insulator; 3. Metallic cladding layer; 4. Ground wire; 5. First non-metallic cladding layer; 6. Second non-metallic cladding layer. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0021] Example 1

[0022] Please see Figure 1 In this embodiment of the present invention, a highly flexible, ultra-low loss, high-speed cable includes two parallel signal conductors 1, the size of which is 38AWG-26AWG. The two signal conductors 1 are wrapped by a common insulator 2. The common insulator 2 is covered with a metal cladding layer 3, the metal cladding layer 3 is covered with a first non-metallic cladding layer 5, and the first non-metallic cladding layer 5 is covered with a second non-metallic cladding layer 6. The thickness of the non-metallic cladding layer is generally 0.008-0.040mm, and the non-metallic cladding layer is made of PET tape or FEP / PVC / PUR, etc.

[0023] The common insulator 2 is eye-shaped and is made of PE, PP, or FEP insulator. Its size is determined by the material to meet different differential impedance requirements (e.g., 85 ohms-100 ohms).

[0024] The metal cladding layer 3 is a composite strip or a pure metal strip formed by a metal layer and a non-metal layer. The cladding method of the metal cladding layer 3 is longitudinal wrapping or wrapping. The metal cladding layer can be a pure metal strip (copper strip, aluminum strip, or metal alloy strip). The thickness of the metal is generally 0.008-0.040 mm.

[0025] It also includes a ground wire 4, which is located outside the metal cladding layer 3 and is in contact with the metal cladding layer 3.

[0026] Example 2

[0027] Please see Figure 2In this embodiment of the present invention, a highly flexible, ultra-low loss, high-speed cable includes two parallel signal conductors 1, the size of which is 38AWG-26AWG. The two signal conductors 1 are wrapped by a common insulator 2. The common insulator 2 is covered with a metal cladding layer 3, the metal cladding layer 3 is covered with a first non-metallic cladding layer 5, and the first non-metallic cladding layer 5 is covered with a second non-metallic cladding layer 6. The thickness of the non-metallic cladding layer is generally 0.008-0.040mm, and the non-metallic cladding layer is made of PET tape or FEP / PVC / PUR, etc.

[0028] The common insulator 2 is eye-shaped and is made of PE, PP, or FEP insulator. Its size is determined by the material to meet different differential impedance requirements (e.g., 85 ohms-100 ohms).

[0029] The metal cladding layer 3 is a composite strip or a pure metal strip formed by a metal layer and a non-metal layer. The cladding method of the metal cladding layer 3 is longitudinal wrapping or wrapping. The metal cladding layer can be a pure metal strip (copper strip, aluminum strip, or metal alloy strip). The thickness of the metal is generally 0.008-0.040 mm.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A highly flexible, ultra-low loss, high-speed cable, comprising two parallel signal conductors (1), characterized in that: The two signal conductors (1) are wrapped by a common insulator (2), the outside of which is covered by a metal cladding layer (3), the outside of which is covered by a first non-metallic cladding layer (5), and the outside of which is covered by a second non-metallic cladding layer (6).

2. The high-flexibility, ultra-low-loss, high-speed cable according to claim 1, characterized in that: The signal conductor (1) has a size of 38AWG-26AWG.

3. The high-flexibility, ultra-low-loss, high-speed cable according to claim 1, characterized in that: The common insulator (2) is eye-shaped, and the material of the common insulator (2) is PE insulator, PP insulator or FEP insulator.

4. The high-flexibility, ultra-low-loss, high-speed cable according to claim 1, characterized in that: The metal cladding layer (3) is a composite strip formed by a metal layer and a non-metal layer or a pure metal strip.

5. The high-flexibility, ultra-low-loss, high-speed cable according to claim 1, characterized in that: The metal cladding layer (3) is clad in a longitudinal or wrapping manner.

6. The high-flexibility, ultra-low-loss, high-speed cable according to claim 1, characterized in that: It also includes a ground wire (4), which is located outside the metal cladding layer (3) and is in contact with the metal cladding layer (3).

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