Variable-pitch data transmission line and preparation method thereof

Abstract

The invention relates to a variable-pitch data transmission line and a preparation method thereof. The preparation method comprises the following steps: providing a to-be-wrapped core wire assembly and a wrapping base material belt; setting a variable wrapping pitch for the wrapping base material belt; wrapping the core wire assembly by adopting a wrapping base material belt in a transverse wrapping manner to form a wrapping structure; wherein the transverse wrapping mode has a variable wrapping pitch; and obtaining the variable-pitch data transmission line based on the core wire assembly and the wrapping structure. On one hand, the traditional industry prejudice that the harmonic peak can only be used for reducing the wrapping pitch is eliminated, and a changing wrapping pitch is formed by adjusting the wrapping mode in another way, so that the problem of signal transmission attenuation caused by a fixed pitch period is avoided, the huge harmonic peak is avoided, and the effectiveness of signal transmission is ensured; and on the other hand, due to the changed wrapping pitch, the pitch does not need to be reduced, so that the lap joint rate and the lap joint effectiveness are ensured, and the problem that the wrapping process is difficult to form due to the fact that the width of the belt is too small is solved.

Description

Technical Field

[0001] The present application relates to the field of data transmission, and in particular to a variable pitch data transmission line and a preparation method thereof. Background Art

[0002] Traditional high-speed signal transmission generally uses differential signals for transmission, so high-speed signal transmission lines can also be called differential signal transmission lines, or simply high-speed signal lines or data transmission lines.

[0003] A data transmission line for transmitting differential signals usually includes at least two core wires arranged in parallel, and the core wires are isolated by insulators. The core wires and the insulators serve as the internal structure of the transmission line. A transmission line for transmitting differential signals usually also includes a shielding layer wrapped around the internal structure and a protective layer wrapped outside the shielding layer.

[0004] The shielding layer is usually formed by a base material tape of the shielding body through a longitudinal direct wrapping method or a transverse wrapping method. The transverse wrapping method is shown in Figure 1. The internal structure 100 first transversely wraps a layer of shielding body 200, and then continues to transversely wrap layers of shielding body 200. The latter layer of shielding body 200 is continuous and uninterrupted with the previous layer of shielding body 200, and the latter layer of shielding body 200 forms an overlap position 300 on the previous layer of shielding body 200; similarly to the shielding body 200, the longitudinal direct wrapping method is shown in Figure 2, and the latter layer of shielding body 200 will also form an overlap position 300 on the previous layer of shielding body 200.

[0005] Similarly, the protective layer is usually formed by transversely wrapping the base material tape of the protective body. This is because the longitudinal straight wrapping method is easy to spread out, so the protective layer wrapped outside the shielding layer must be formed by transversely wrapping.

[0006] Due to the manufacturing process, the overlap positions 300 of the lateral wrapping method are repeated in an orderly manner. Therefore, as shown in Figure 1, the wrapping structure will form a fixed wrapping pitch in the axial direction, that is, since the wrapping method and the width of the substrate tape are certain, the wrapping pitch is certain, the first wrapping pitch L1, the second wrapping pitch L2, the third wrapping pitch L3... these wrapping pitches are the same, and the width of the overlap position 300 is also the same, that is, the width of the first overlap position M1, the second overlap position M2... and so on are also the same, thereby forming a fixed pitch period, and this axial fixed pitch period will cause attenuation. The differential insertion loss test is shown in Figure 3, and a huge resonance peak appears, which will have a serious impact on signal transmission.

[0007] In order to reduce the impact of the fixed pitch period, the traditional approach is to reduce the winding pitch so that the resonant peak frequency is moved back to outside the transmission frequency to ensure that the wire has no large resonance within the required frequency range.

[0008] However, reducing the wrapping pitch also reduces production efficiency. As the transmission frequency increases, the limitations of this method become more and more obvious, and the reduction in production efficiency will greatly increase the production cost of the product.

[0009] At the same time, reducing the pitch means that the tape width of the base tape must be reduced simultaneously when the overlap rate is the same. However, if the tape width is too small, it will lead to difficulties in the wrapping process, such as the tape breaking, folding, twisting, etc. Summary of the invention

[0010] Based on this, it is necessary to provide a variable pitch data transmission line and a preparation method thereof.

[0011] In one embodiment, a method for preparing a variable pitch data transmission line comprises the steps of:

[0012] Providing a core wire assembly to be wrapped and a wrapping base material tape;

[0013] Setting a variable wrapping pitch for the wrapped substrate tape;

[0014] The core wire assembly is wrapped with the wrapping substrate tape in a transverse wrapping manner to form a wrapping structure; wherein the transverse wrapping manner has the variable wrapping pitch;

[0015] Based on the core wire assembly and the winding structure, a variable pitch data transmission line is obtained.

[0016] The above-mentioned method for preparing a variable pitch data transmission line does not change the internal structure, but only adjusts the preparation steps of the external structure. On the one hand, it eliminates the traditional industry prejudice that the resonance peak can only be achieved by reducing the winding pitch, and takes a different approach by adjusting the winding method to form a variable winding pitch, thereby avoiding the signal transmission attenuation problem caused by a fixed pitch period and avoiding the occurrence of a huge resonance peak, thereby ensuring the effectiveness of signal transmission; on the other hand, due to the variable winding pitch, there is no need to reduce the pitch, thereby ensuring the overlap rate and overlap effectiveness, and avoiding problems such as difficulties in forming the winding process due to the small width of the tape; on the other hand, the changes to the production process are small and the effect is significant, so it is easy to promote and apply.

[0017] In one embodiment, the setting of the variable wrapping pitch includes at least one of setting the wrapping angle and setting the width of the wrapped substrate tape.

[0018] In one embodiment, the wrapping substrate tape is used to wrap the core wire assembly in a transverse wrapping manner to form a wrapping structure, including:

[0019] Using a wrapping substrate tape of the same width, wrapping the core wire assembly in a transverse wrapping manner with a varying wrapping angle to form a wrapping structure for a variable pitch data transmission line; or,

[0020] By using wrapping substrate tapes of different widths and wrapping the core wire assembly in a transverse wrapping manner with the same wrapping angle, a wrapping structure of a variable pitch data transmission line is formed.

[0021] In one embodiment, at least one of setting the wrapping angle and setting the width of the wrapped substrate tape comprises:

[0022] Set a variable wrapping angle; or,

[0023] Setting a variable wrapping substrate tape width; or,

[0024] A variable wrapping angle is set and a variable width of the wrapped substrate tape is set.

[0025] In one embodiment, the setting of the variable wrapping angle includes: setting a randomly variable wrapping angle, setting a wrapping angle that changes in stages and repeats in stages, setting a wrapping angle that fluctuates in a sinusoidal curve, or setting a wrapping angle that changes in a noise curve;

[0026] The variable width of the wrapping substrate tape includes: setting a randomly variable width of the wrapping substrate tape, setting a width of the wrapping substrate tape that changes during stages and is repeated in stages, setting a width of the wrapping substrate tape that fluctuates in a sinusoidal curve, or setting a width of the wrapping substrate tape that changes in a noise curve.

[0027] In one embodiment, the wrapping substrate tape is used to wrap the core wire assembly in a transverse wrapping manner to form a wrapping structure, including:

[0028] By using the wrapping base tape, at least one of a variable wrapping angle and a variable wrapping base tape width is selected, and the core wire assembly is wrapped transversely in a stacking order to form a stacked at least two-layer wrapping structure on the same core wire assembly.

[0029] In one embodiment, the method of using the wrapped substrate tape, selecting at least one of a variable wrapping angle and a variable wrapping substrate tape width, and wrapping the core wire assembly in a transverse wrapping manner in a stacking order includes:

[0030] Using the wrapping substrate tape, selecting at least one of the same changing wrapping angle and the same changing wrapping substrate tape width, selecting at least one of the different initial wrapping angle and the different wrapping substrate tape width, and wrapping the core wire assembly in a transverse wrapping manner in the order of inner layer first and outer layer later; or,

[0031] By using the wrapping base material tape, at least one of the wrapping angles and the widths of the wrapping base material tape are selected to wrap the core wire assembly in a transverse wrapping manner in a stacking order of inner layer first and outer layer later.

[0032] In one embodiment, a variable pitch data transmission line includes a core wire assembly and a wrapping structure;

[0033] The wrapping structure is wrapped around the core wire component in a transverse wrapping manner and has a variable wrapping pitch.

[0034] In one embodiment, the variable wrapping pitch has at least one of a variable wrapping angle and a variable width of the wrapped substrate tape.

[0035] In one embodiment, the wrapping structure is formed by wrapping a base material tape with the same width around the core wire assembly in a transverse wrapping manner with a varying wrapping angle; or,

[0036] The wrapping structure is formed by wrapping substrate tapes with different widths around the core wire assembly in a transverse wrapping manner with the same wrapping angle; or,

[0037] The core wire assembly includes a conductor, and the wrapping structure includes at least one of an insulating layer, a protective layer and a shielding layer; or,

[0038] The core wire assembly includes an insulating layer, and the wrapping structure includes at least one of a protective layer and a shielding layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] FIG. 1 is a schematic diagram of a conventional lateral wrapping method for a high-speed data line.

[0041] FIG. 2 is a schematic diagram of another conventional longitudinal straight-wrapping method of a high-speed data line.

[0042] FIG. 3 is a schematic diagram of differential insertion loss test results of a conventional high-speed data line.

[0043] FIG. 4 is a schematic diagram of the lateral wrapping method of the first embodiment of the variable pitch data transmission line described in the present application.

[0044] FIG. 5 is another schematic diagram of identification of the embodiment shown in FIG. 4 .

[0045] FIG. 6 is a schematic diagram of the wrapping process of the embodiment shown in FIG. 4 .

[0046] FIG. 7 is a schematic diagram of differential insertion loss test results of the embodiment shown in FIG. 4 .

[0047] FIG8 is a schematic diagram showing a sinusoidal fluctuation of the pitch variation of the winding pitch of the second embodiment of the variable pitch data transmission line described in the present application.

[0048] FIG9 is a schematic diagram showing a sinusoidal curve fluctuation with a variation in the pitch variation of the winding pitch of the third embodiment of the variable pitch data transmission line described in the present application.

[0049] FIG10 is a schematic diagram showing a sinusoidal curve fluctuation with a fluctuation period variation in the pitch variation of the wrapping pitch of the fourth embodiment of the variable pitch data transmission line described in the present application.

[0050] Figure numerals: internal structure 100, shielding body 200, overlapping position 300, variable pitch data transmission line 400, main structure 500, protective layer 600, first wrapping pitch L1, second wrapping pitch L2, third wrapping pitch L3, fourth wrapping pitch L4, fifth wrapping pitch L5, sixth wrapping pitch L6, first overlapping position M1, second overlapping position M2, third overlapping position M3, fourth overlapping position M4, fifth overlapping position M5. DETAILED DESCRIPTION

[0051] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0052] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0056] The present application discloses a variable pitch data transmission line and a method for preparing the same, which include some or all of the technical features of the following embodiments; that is, the variable pitch data transmission line and the method for preparing the same include some or all of the following structures. In one embodiment of the present application, a method for preparing a variable pitch data transmission line includes the steps of: providing a core wire assembly to be wrapped and a wrapping substrate tape; setting a variable wrapping pitch for the wrapping substrate tape; using the wrapping substrate tape to wrap the core wire assembly in a transverse wrapping manner to form a wrapping structure; wherein the transverse wrapping manner has the variable wrapping pitch; based on the core wire assembly and the wrapping structure, a variable pitch data transmission line is obtained. The preparation method of the variable pitch data transmission line does not change the internal structure, but only adjusts the preparation steps of the external structure. On the one hand, it eliminates the traditional industry prejudice that the resonance peak can only be obtained by reducing the winding pitch, and takes a different approach by adjusting the winding method to form a variable winding pitch, thereby avoiding the signal transmission attenuation problem caused by the fixed pitch period and avoiding the appearance of a huge resonance peak, thereby ensuring the effectiveness of signal transmission; on the other hand, due to the variable winding pitch, there is no need to reduce the pitch, thereby ensuring the overlap rate and overlap effectiveness, avoiding the problem of difficulty in forming the winding process caused by the tape width being too small; on the other hand, the production process is slightly changed and the effect is significant, so it is easy to promote and apply. The variable pitch data transmission line and its preparation method are described in detail below in conjunction with Figures 1 to 10.

[0057] In one of the embodiments, a method for preparing a variable pitch data transmission line includes the following steps: S10, providing a core wire assembly to be wrapped and a wrapping substrate tape; S20, setting a variable wrapping pitch for the wrapping substrate tape; S30, using the wrapping substrate tape to wrap the core wire assembly in a transverse wrapping manner to form a wrapping structure; wherein the transverse wrapping manner has the variable wrapping pitch; S40, obtaining a variable pitch data transmission line based on the core wire assembly and the wrapping structure.

[0058] As an example, in step S10, a core wire assembly to be wrapped and a wrapping substrate tape are provided; illustratively, the method for preparing the variable pitch data transmission line includes the steps of: providing a core wire assembly to be wrapped and a wrapping substrate tape, the core wire assembly of the variable pitch data transmission line described in each embodiment of the present application, as the internal structure of the variable pitch data transmission line, may not be changed, and the internal structure may include only the core wire, or may include the core wire and the insulator, or may include the core wire, the insulator and other structures. In one of the embodiments, the internal structure of the variable pitch data transmission line is the core wire assembly, and the external structure of the variable pitch data transmission line is the wrapping substrate tape. In one of the embodiments, correspondingly, the internal structure includes the core wire and the insulator, and the external structure is a protective layer or a shielding layer; or, the external structure includes a protective layer and a shielding layer. Or, in one of the embodiments, the internal structure of the variable pitch data transmission line includes the core wire but does not include an insulating layer, and the external structure includes an insulating layer, a protective layer and a shielding layer.

[0059] As an example, in step S20, a variable wrapping pitch is set for the wrapped substrate tape; in one embodiment, the variable wrapping pitch includes setting a wrapping angle and setting at least one of a wrapping substrate tape width; that is, at least one of a variable wrapping angle and a variable wrapping substrate tape width is set for the wrapped substrate tape; that is, a variable wrapping angle is set for the wrapped substrate tape, or a variable wrapping substrate tape width is set, or a variable wrapping angle and a variable wrapping substrate tape width are set.

[0060] For different wrapping structures, i.e., different wrapping layers, formed by different wrapping substrate tapes, exemplarily, the external structure includes a protective layer, and the protective layer has a variable wrapping pitch of the protective layer; as an example, for the protective layer, in one embodiment, a variable wrapping pitch of the protective layer is used to form a protective layer of a variable pitch data transmission line. The wrapping pitch of the protective layer is the wrapping pitch of the protective layer, and this name is used to distinguish it from the wrapping pitch of the shielding layer to be described below; as an example, the use of a variable wrapping pitch of the protective layer to form a protective layer of a variable pitch data transmission line is performed in step S20; for other steps or processes of the method for preparing the variable pitch data transmission line, relevant technical means of conventional data lines can be used to implement it, or the technical means described in this article can be used to implement it.

[0061] Exemplarily, the external structure includes a shielding layer, and the shielding layer has a variable shielding layer wrapping pitch. In one embodiment, the external structure includes a protective layer and a shielding layer, wherein the protective layer has a variable protective layer wrapping pitch; and the shielding layer has a variable shielding layer wrapping pitch. In one embodiment, the pitch variation discrete amplitude of the protective layer wrapping pitch is the same as or different from the pitch variation discrete amplitude of the shielding layer wrapping pitch. Similarly, in one embodiment, the external structure includes an insulating layer, and the insulating layer has a variable insulating layer wrapping pitch, that is, the insulating layer can also be realized by a transverse wrapping method, that is, a transverse wrapping process.

[0062] Exemplarily, a variable insulation layer wrapping pitch is used to form the insulation layer of the variable pitch data transmission line. In one embodiment, the discrete amplitude of the pitch variation of the insulation layer wrapping pitch is set according to the pitch resonance peak amplitude that needs to reduce the transmission attenuation. In one embodiment, the pitch variation of the insulation layer wrapping pitch presents a sinusoidal curve fluctuation; in one embodiment, the wrapping pitches of two adjacent insulation layers are set differently; in one embodiment, the variable insulation layer wrapping pitch is formed by a variable wrapping angle; or, the variable insulation layer wrapping pitch is formed by a variable substrate tape width. For the protective layer wrapping pitch and the shielding layer wrapping pitch to be described below, in one embodiment, the pitch variation of the protective layer wrapping pitch is set the same as or differently from the pitch variation of the shielding layer wrapping pitch. In one of the embodiments, the pitch variation of the insulating layer wrapping pitch, the pitch variation of the protective layer wrapping pitch and the pitch variation of the shielding layer wrapping pitch are set the same or differently; that is, the pitch variation of the insulating layer wrapping pitch, the pitch variation of the protective layer wrapping pitch and the pitch variation of the shielding layer wrapping pitch can be the same, or any two of them can be the same and different from the other, or the three can be different. In one of the embodiments, the discrete amplitude of the pitch variation of the shielding layer wrapping pitch, the discrete amplitude of the pitch variation of the protective layer wrapping pitch and the discrete amplitude of the pitch variation of the shielding layer wrapping pitch are set the same or differently. Such a design is conducive to forming more variable wrapping pitches by adjusting the wrapping method, and theoretically overcomes the problem of resonance peaks generated in signal transmission due to the wrapping process.

[0063] In one embodiment, at least one of setting the wrapping angle and setting the wrapping substrate tape width includes: setting a variable wrapping angle; or setting a variable wrapping substrate tape width; or setting a variable wrapping angle and setting a variable wrapping substrate tape width. In one embodiment, the setting of the variable wrapping angle includes: setting a randomly variable wrapping angle, setting a wrapping angle that changes and repeats in stages during the setting phase, setting a wrapping angle that fluctuates in a sinusoidal curve, or setting a wrapping angle that changes in a noise curve. In one embodiment, the setting of the variable wrapping substrate tape width includes: setting a randomly variable wrapping substrate tape width, setting a wrapping substrate tape width that changes and repeats in stages during the setting phase, setting a wrapping substrate tape width that fluctuates in a sinusoidal curve, or setting a wrapping substrate tape width that changes in a noise curve. For example, the conventional normal pitch is H, and a certain deviation amplitude is +0.1, then the actual pitch is H+0.1; the next deviation amplitude is -0.05, then the actual pitch is H-0.05; the rest of the embodiments are analogous, and no further description is given.

[0064] As an example, in step S30, the wrapping substrate tape is used to wrap the core wire assembly in a transverse wrapping manner to form a wrapping structure; wherein the transverse wrapping manner has the variable wrapping pitch; in one embodiment, the wrapping substrate tape is used to wrap the core wire assembly in a transverse wrapping manner to form a wrapping structure, including: using a wrapping substrate tape with the same width to wrap the core wire assembly in a transverse wrapping manner with a variable wrapping angle to form a wrapping structure of a variable pitch data transmission line; or, using a wrapping substrate tape with different widths to wrap the core wire assembly in a transverse wrapping manner with the same wrapping angle to form a wrapping structure of a variable pitch data transmission line. As an example, a method for preparing a variable pitch data transmission line includes the following steps: S10, providing a core wire assembly to be wrapped and a wrapping substrate tape; S20, setting at least one of a variable wrapping angle and a variable wrapping substrate tape width for the wrapping substrate tape; S30, using a wrapping substrate tape with the same width, wrapping the core wire assembly by a transverse wrapping method with a variable wrapping angle, to form a wrapping structure of the variable pitch data transmission line; or, using a wrapping substrate tape with different widths, wrapping the core wire assembly by a transverse wrapping method with the same wrapping angle, to form a wrapping structure of the variable pitch data transmission line; S40, obtaining a variable pitch data transmission line based on the core wire assembly and the wrapping structure; the remaining embodiments are similar and will not be described in detail.

[0065] In one embodiment, the use of the wrapping substrate tape to wrap the core wire assembly in a transverse wrapping manner to form a wrapping structure includes: using the wrapping substrate tape, selecting at least one of a variable wrapping angle and a variable wrapping substrate tape width, wrapping the core wire assembly in a transverse wrapping manner in a stacking order, and forming at least two layers of stacked wrapping structures on the same core wire assembly. Exemplarily, for the at least two layers of wrapping structures, the pitch variation discrete amplitudes of each layer of the wrapping structures are set to be the same or different.

[0066] In one of the embodiments, the method of using the wrapping substrate tape, selecting at least one of a changing wrapping angle and a changing wrapping substrate tape width, and wrapping the core wire component in a transverse wrapping manner in a stacking order includes: using the wrapping substrate tape, selecting at least one of the same changing wrapping angle and the same changing wrapping substrate tape width, selecting different initial wrapping angles and at least one of different wrapping substrate tape widths, and wrapping the core wire component in a transverse wrapping manner in a stacking order of inner layer first and outer layer later; or, using the wrapping substrate tape, selecting at least one of the different changing wrapping angles and the different changing wrapping substrate tape widths, and wrapping the core wire component in a transverse wrapping manner in a stacking order of inner layer first and outer layer later.

[0067] Taking the protective layer as an example, in step S30, the wrapping base material tape of the protective layer is used to wrap the core wire assembly in a transverse wrapping manner to form a wrapping structure of the protective layer, that is, a variable wrapping pitch of the protective layer is used to form a protective layer of a variable pitch data transmission line; similarly, for the shielding layer, the wrapping base material tape of the shielding layer is used to wrap the core wire assembly in a transverse wrapping manner to form a wrapping structure of the shielding layer; and the rest of the embodiments are analogous. It can be understood that a variable wrapping pitch of the protective layer is used to form a protective layer of a variable pitch data transmission line, that is, a variable wrapping pitch of the protective layer is formed in the protective layer of the variable pitch data transmission line, that is, a variable overlap width is formed in the protective layer of the variable pitch data transmission line. In one embodiment, as shown in Figures 4 and 5, the variable pitch data transmission line 400 has a main structure 500 and a protective layer 600. It can be understood that the main structure 500 may include a core wire, an insulator and a shielding layer, etc.; the protective layer 600 has a first winding pitch L1, a second winding pitch L2, a third winding pitch L3, a fourth winding pitch L4, a fifth winding pitch L5, and a sixth winding pitch L6; exemplarily, these protective layer winding pitches may be the same or different. As an example, the first winding pitch L1 may be the same as or different from the fourth winding pitch L4; exemplarily, the winding pitches of two adjacent protective layers are differently set; and the first N protective layer winding pitches are taken as a first group as a whole, and the last N protective layer winding pitches are taken as a second group as a whole, and the first group as a whole is differently set from the second group as a whole; wherein N is a natural number greater than 1. As an example, the first two protective layer wrapping pitches are taken as the first group as a whole, and the last two protective layer wrapping pitches are taken as the second group as a whole, and the first group as a whole is set differently from the second group as a whole; or, the first three protective layer wrapping pitches are taken as the first group as a whole, and the last three protective layer wrapping pitches are taken as the second group as a whole, and the first group as a whole is set differently from the second group as a whole; the rest of the embodiments are similar and will not be elaborated on. Such a structural design, on the one hand, can avoid the appearance of huge resonance peaks by adjusting the wrapping method to form a variable wrapping pitch, thereby avoiding the signal transmission attenuation problem caused by a fixed pitch period, thereby ensuring the effectiveness of signal transmission; on the other hand, it not only avoids the signal transmission attenuation problem caused by a fixed pitch period, but also proposes two sets of technical means with overall different settings, which further improves the pitch variation, which is equivalent to changing the consistency requirements of traditional production to achieve production variability and product wrapping discreteness, further overcoming traditional industry prejudices, and at the same time, due to the variable wrapping pitch, there is no need to reduce the pitch, thereby ensuring the overlap rate and overlap effectiveness, avoiding problems such as the difficulty of wrapping process forming caused by the tape width being too small; and the changes to the production process are relatively small, and the technical effect is significant, so it is easy to promote and apply.

[0068] In one embodiment, as shown in FIG. 4 , the protective layer 600 has a variable protective layer wrapping pitch, including a first wrapping pitch L1, a second wrapping pitch L2, a third wrapping pitch L3, a fourth wrapping pitch L4, a fifth wrapping pitch L5, and a sixth wrapping pitch L6, etc. In combination with FIG. 5 and FIG. 6 , the width of the overlap position of two adjacent protective layer wrapping pitches is also variable, and the first overlap position M1 of the first wrapping pitch L1 and the second wrapping pitch L2, the second overlap position M2 of the second wrapping pitch L2 and the third wrapping pitch L3, the third overlap position M3 of the third wrapping pitch L3 and the fourth wrapping pitch L4, the fourth overlap position M4 of the fourth wrapping pitch L4 and the fifth wrapping pitch L5, and the fifth overlap position M5 of the fifth wrapping pitch L5 and the sixth wrapping pitch L6 are not conventional constant values, but are constantly changing. In one embodiment, the wrapping pitches of the two adjacent protective layers are set differently. Exemplarily, a protective layer of a variable pitch data transmission line is formed by using a variable pitch wrapping pitch, and the overlapping positions of two adjacent protective layer wrapping pitches are changed, that is, the overlapping positions of two adjacent protective layer wrapping pitches are the same or different, and the adjacent overlapping positions are different. Comparing Figures 1 and 4, it can be seen that for the axial direction of a data transmission line such as a variable pitch data transmission line, that is, the extension direction, the wrapping pitch is changed from a conventional fixed pitch to a constantly changing non-fixed pitch. Comparing Figures 3 and 7, it can be seen that the frequency of the SDD21 test shown in Figure 7 is 16GHz, so that the originally huge resonance peak in Figure 3 can be changed into several relatively small resonance peaks. These small resonance peaks have almost no effect on the use of the variable pitch data transmission line at this frequency point relative to the original huge resonance peak. Such a structural design, the changing wrapping pitch and the changing overlap position break the consistency limitation of the standardized process of the traditional design, avoid the signal transmission attenuation problem caused by the fixed pitch cycle, and further ensure the overlap rate and overlap effectiveness.

[0069] As an example, in step S30, as an example, the changing wrapping pitch is formed by changing the wrapping angle; or, the changing wrapping pitch is formed by changing the width of the substrate tape. For the protective layer of the variable pitch data transmission line formed by using a changing protective layer wrapping pitch, in one embodiment, the changing protective layer wrapping pitch is formed by changing the wrapping angle; or in other embodiments, the changing protective layer wrapping pitch is formed by changing the width of the substrate tape. Similarly, for the shielding layer of the variable pitch data transmission line formed by using a changing shielding layer wrapping pitch, in one embodiment, the changing shielding layer wrapping pitch is formed by changing the wrapping angle; or in other embodiments, the changing shielding layer wrapping pitch is formed by changing the width of the substrate tape. Such a design, as mentioned above, has a significant effect on avoiding the occurrence of a huge resonance peak that causes signal transmission attenuation, and has little change to the production process, so it is easy to promote and apply.

[0070] In one of the embodiments, the pitch variation of the protective layer wrapping pitch presents a sinusoidal fluctuation as shown in FIG8 . In contrast, the wrapping pitch of the conventional data cable remains unchanged, which can be understood as a straight line parallel to the time axis. The comparison shows the significant difference between the above embodiments of the present application and the conventional technology. For the pitch variation form of the sinusoidal distribution shown in FIG8 , since the pitch is the quotient of the wire pulling speed and the head speed, in the production process, each pitch variation only needs to fine-tune the head speed to achieve the changed protective layer wrapping pitch, and such a design can avoid the risk of uneven wrapping and damage to the wrapping equipment caused by drastic changes in speed.

[0071] For example, in one embodiment, the pitch variation of the protective layer wrapping pitch presents a variation of a sinusoidal curve, wherein the variation of the sinusoidal curve includes a variation of the fluctuation amplitude and a variation of the fluctuation period, so that the pitch variation of the protective layer wrapping pitch intersects with a strict sinusoidal curve and is more variable, that is, the pitch variation of the protective layer wrapping pitch has a larger discrete amplitude relative to the sinusoidal curve. As an example, the pitch variation of the protective layer wrapping pitch presents a sinusoidal curve with a fluctuation amplitude variation as shown in FIG9 , and in another embodiment, the pitch variation of the protective layer wrapping pitch presents a sinusoidal curve with a fluctuation period variation as shown in FIG10 , which can further improve the discrete amplitude of the pitch variation of the protective layer wrapping pitch.

[0072] In one of the embodiments, the discrete amplitude of the pitch change of the wrapping pitch is set according to the amplitude of the pitch resonance peak that needs to reduce the transmission attenuation. For the protective layer, in one of the embodiments, the discrete amplitude of the pitch change of the wrapping pitch of the protective layer is set according to the amplitude of the pitch resonance peak that needs to reduce the transmission attenuation. That is, the pitch change of the wrapping pitch of the protective layer is discrete in distribution law, and the discrete amplitude, that is, the amplitude of the discreteness is not constant, but is determined according to the needs of the pitch resonance peak amplitude of the transmission attenuation, so as to meet the use requirements of certain specific frequencies, and can achieve the technical effect of reducing the pitch resonance peak amplitude or even eliminating the pitch resonance peak at certain specific frequencies. Exemplarily, the larger the discrete amplitude of the pitch change of the wrapping pitch of the protective layer, the smaller the pitch resonance peak of its attenuation, that is, the smaller the amplitude of its attenuation pitch resonance peak. Exemplarily, the process capability index of the plus or minus 10% tolerance of the wrapping pitch of the protective layer is less than 1. The process capability index is the smaller value between the precision and the deviation between the process center and the specification limit. The higher the Cpk value, the better the stability of the process and the better the control over the process. Capability of Precision, or Cp for short, is used to reflect the quality characteristics of the product. Usually, the distribution range or concentration of the quality characteristics is called precision. In the process, the smaller the distribution range or variation range, the better the precision and the more ideal the process. Therefore, the lateral wrapping process required by traditional technology and industry prejudice for data cables must ensure that the process capability index is greater than 1, preferably greater than 1.33, and more preferably greater than 1.67; that is, high concentration is required, the more concentrated the better, that is, the lateral wrapping process required by traditional technology and industry prejudice must ensure the consistency of the wrapping pitch, and must ensure the consistency of data transmission line products, and avoid discreteness as much as possible. In contrast, the variable pitch data transmission lines described in the embodiments of the present application go the other way and use a variable pitch of the protective layer wrapping, that is, changing from a consistency requirement to a discrete requirement, disrupting the rules and not being able to concentrate, the more discrete the better; this greatly overcomes the stubborn traditional technical prejudice, and further eliminates the traditional industry prejudice that the resonance peak can only be formed by reducing the wrapping pitch. A different approach is taken to form a variable wrapping pitch by adjusting the wrapping method, avoiding the appearance of a huge resonance peak, thereby avoiding the signal transmission attenuation problem caused by a fixed pitch period, and thus ensuring the effectiveness of signal transmission. The shielding layer wrapping pitch of the shielding layer is also analogous, and will not be elaborated.

[0073] The foregoing embodiments are mainly improvements made to the protective layer of the variable pitch data transmission line. In one of the embodiments, a variable shielding layer wrapping pitch is also used to form the shielding layer of the variable pitch data transmission line. As an example, the main structure of the high-speed data line includes a core wire and an insulator; then similar to the embodiment shown in Figure 4, the shielding layer is first transversely wrapped around the main structure. In this embodiment, the shielding layer has a first wrapping pitch L1, a second wrapping pitch L2, a third wrapping pitch L3, a fourth wrapping pitch L4, a fifth wrapping pitch L5, and a sixth wrapping pitch L6. Similar to the embodiment shown in Figure 5, the first wrapping pitch L1 and the second wrapping pitch L2 have a first overlap position M1, the second wrapping pitch L2 and the third wrapping pitch L3 have a second overlap position M2, the third wrapping pitch L3 and the fourth wrapping pitch L4 have a third overlap position M3, the fourth wrapping pitch L4 and the fifth wrapping pitch L5 have a fourth overlap position M4, and the fifth wrapping pitch L5 and the sixth wrapping pitch L6 have a fifth overlap position M5; the remaining embodiments are similar and will not be described in detail.

[0074] In one embodiment, the pitch variation discrete amplitude of the protective layer wrapping pitch is set differently from the pitch variation discrete amplitude of the shielding layer wrapping pitch. Such a design is conducive to further enhancing the variability of the wrapping pitch through the same or different wrapping pitches of the shielding layer and the protective layer, and their different pitch variation discrete amplitudes, thereby avoiding the signal transmission attenuation problem caused by the fixed pitch period.

[0075] Similar to the previous embodiments, as an example, the discrete amplitude of the pitch variation of the shielding layer wrapping pitch is set according to the pitch resonance peak amplitude that needs to reduce the transmission attenuation; in one of the embodiments, the pitch variation of the wrapping pitch fluctuates in a sinusoidal curve; as an example, the pitch variation of the shielding layer wrapping pitch fluctuates in a sinusoidal curve. Exemplarily, in one of the embodiments, the pitch variation of the shielding layer wrapping pitch fluctuates in a variant sinusoidal curve. And / or, as an example, the pitch variation of the protective layer wrapping pitch fluctuates in a sinusoidal curve. Exemplarily, in one of the embodiments, the pitch variation of the protective layer wrapping pitch fluctuates in a variant sinusoidal curve. The rest of the embodiments are similar and will not be described in detail.

[0076] As an example, the two adjacent winding pitches are set differently, including the two adjacent shielding layer winding pitches being set differently; and / or, the two adjacent protective layer winding pitches being set differently. The rest of the embodiments are analogous and will not be elaborated on. Exemplarily, the two adjacent shielding layer winding pitches are set differently; and the first M shielding layer winding pitches are taken as the first group as a whole, and the last M shielding layer winding pitches are taken as the second group as a whole, and the first group as a whole is set differently from the second group as a whole; wherein M is a natural number greater than 1. As an example, the two adjacent shielding layer winding pitches are set differently. Exemplarily, a variable shielding layer winding pitch is used to form a shielding layer of a variable pitch data transmission line, and the overlapping positions of the two adjacent shielding layer winding pitches are changed, that is, the overlapping positions of the two adjacent shielding layer winding pitches are the same or differently set, and the two adjacent overlapping positions are set differently.

[0077] As an example, the shielding layer wrapping pitch is changed by changing the wrapping angle; or, the shielding layer wrapping pitch is changed by changing the substrate tape width. Exemplarily, the process capability index of the shielding layer wrapping pitch of plus or minus 10% tolerance is less than 1. The rest of the embodiments are similar and will not be described in detail. The beneficial technical effects are the same as described above and are omitted here.

[0078] As an example, in step S40, based on the core wire assembly and the wrapping structure, a variable pitch data transmission line is obtained; that is, the variable pitch data transmission line has the core wire assembly and the wrapping structure. Based on the core wire assembly and the wrapping structure, other structures can be additionally provided, or other processes, such as packaging or cutting, can be performed to obtain the variable pitch data transmission line.

[0079] In one embodiment, a variable pitch data transmission line includes a core wire component and a wrapping structure; the wrapping structure is wrapped around the core wire component in a transverse wrapping manner and has a variable wrapping pitch. In one embodiment, a variable pitch data transmission line includes a wrapping structure including a protective layer, the protective layer having a variable protective layer wrapping pitch. In one embodiment, the protective layer wrapping pitch is a wrapping pitch formed by a transverse wrapping manner. In one embodiment, the wrapping structure also includes a shielding layer, the shielding layer having a variable shielding layer wrapping pitch. In one embodiment, the shielding layer wrapping pitch is a wrapping pitch formed by a transverse wrapping manner. In one embodiment, the variable pitch data transmission line also includes an insulating layer, the insulating layer also having a variable wrapping pitch. With such a design, the variable pitch data transmission line, on the one hand, eliminates the traditional industry prejudice that the resonance peak can only be achieved by reducing the winding pitch, and takes a different approach by adjusting the winding method to form a variable winding pitch, thereby avoiding the signal transmission attenuation problem caused by a fixed pitch period and avoiding the appearance of a huge resonance peak, thereby ensuring the effectiveness of signal transmission; on the other hand, due to the variable winding pitch, there is no need to reduce the pitch, thereby ensuring the overlap rate and overlap effectiveness, avoiding problems such as difficulties in forming the winding process due to the small width of the tape; on the other hand, the changes to the production process are small and the effect is significant, so it is easy to promote and apply.

[0080] In one of the embodiments, the variable pitch data transmission line is prepared by the preparation method of the variable pitch data transmission line in any embodiment, and therefore has the beneficial technical effects of the preparation method of the variable pitch data transmission line, which will not be described in detail here. In one of the embodiments, the variable winding pitch has at least one of a variable winding angle and a variable width of the winding substrate tape. In one of the embodiments, the winding structure adopts a winding substrate tape of the same width, and is formed by winding it around the core wire component by a transverse winding method with a variable winding angle; in one of the embodiments, the winding structure adopts a winding substrate tape of different widths, and is formed by winding it around the core wire component by a transverse winding method with the same winding angle; in one of the embodiments, the core wire component includes a conductor, and the winding structure includes at least one of an insulating layer, a protective layer and a shielding layer; in one of the embodiments, the core wire component includes an insulating layer, and the winding structure includes at least one of a protective layer and a shielding layer.

[0081] Next, in conjunction with Figures 1 to 10, examples are provided to illustrate the variable pitch data transmission line and its preparation method. In one embodiment, the variable pitch data transmission line includes a conductor, an insulator, a shielding layer and an outer layer, wherein the conductor serves as a core wire, the conductor and the insulator serve as a core wire assembly, i.e., an internal structure, and the outer layer serves as a protective layer; the shielding layer and the protective layer serve as an external structure, and are formed by wrapping a shielding layer wrapping substrate tape and a protective layer wrapping substrate tape in a transverse wrapping manner, respectively, the shielding layer wrapping substrate tape wraps the core wire assembly in a transverse wrapping manner to form a wrapping structure of the shielding layer; the protective layer wrapping substrate tape wraps the shielding layer wrapping structure in a transverse wrapping manner to form a wrapping structure of the protective layer; and the rest of the embodiments are analogous.

[0082] As an example, the number of conductors is two, forming two core wires, and the material includes but is not limited to any one of silver-plated copper, tin-plated copper, bare copper, tin-plated copper clad steel, tin-plated copper clad aluminum, silver-plated copper clad steel, silver-plated copper clad aluminum, and aluminum-magnesium alloy conductors.

[0083] As an example, the insulator is extruded insulation or wrapped insulation, which is coated on the outside of the conductor to form an internal structure; the material of the insulator includes but is not limited to any one of a polyethylene insulation layer, a foamed polyethylene insulation layer, a polypropylene insulation layer, a foamed polypropylene insulation layer, a polytetrafluoroethylene insulation layer, a foamed polytetrafluoroethylene insulation layer, a polytetrafluoroethylene insulation layer, a microporous polytetrafluoroethylene insulation layer, and a fusible polytetrafluoroethylene insulation layer.

[0084] As an example, the shielding layer is coated outside the internal structure, that is, coated outside the two core wires of the existing insulator, that is, the insulating layer. The coating method can be winding, straight wrapping, or a multi-layer shielding composed of winding and straight wrapping. The materials include but are not limited to any one of aluminum foil, copper foil, silver-plated copper foil, silver-plated aluminum, tinned copper foil, and tinned aluminum foil. The surface of the foil can be provided with hot-melt self-adhesive glue so that the wrapping tape can be firmly adhered after forming. As an example, the outer layer is wrapped around the outside of the shielding layer, and the material is not limited.

[0085] In each embodiment, the winding of the variable pitch data transmission line adopts a winding form with a pitch variation. As an example, the larger the discrete amplitude of the pitch variation, the smaller the amplitude of the attenuated pitch resonance peak. As an example, the CPK value when the pitch tolerance is ±10% is less than 1.

[0086] As an example, the pitch is a sinusoidal fluctuation as shown in FIG8. In this embodiment, the pitch variation form of the sinusoidal distribution only needs to fine-tune the head speed for each pitch variation, and the pitch can be limited by the wire pulling speed and the head speed. The ratio of the wire pulling speed to the head speed, that is, the quotient, is the pitch. This can avoid the risk of uneven packages and damage to the wrapping equipment caused by drastic changes in speed. Furthermore, the sinusoidal curve needs to be further disrupted, where the fluctuation amplitude variation is shown in FIG9 and the fluctuation period variation is shown in FIG10. The fluctuation amplitude variation can also be combined with the fluctuation period variation to further increase the discrete amplitude of the pitch variation. As an example, the pitch variation can be implemented by the inorganic variable speed PLC programming control of the wrapping equipment.

[0087] Such a design breaks the traditional thinking of fixed winding pitch and proposes a new variable pitch data transmission line and its preparation method. The variable pitch data transmission line can also be called a variable pitch data high-speed transmission line. It uses a winding layer with a variable winding pitch as a protective layer or a shielding layer. By changing the pitch in the axial direction from a conventional fixed pitch to a constantly changing non-fixed pitch, the originally huge resonance peak is changed into several very small resonance peaks. These tiny resonance peaks do not affect the use of the wire at the target frequency, thereby achieving the purpose of increasing the use frequency of the wire.

[0088] It should be noted that other embodiments of the present application also include variable pitch data transmission lines and preparation methods thereof that can be implemented by combining the technical features in the above embodiments.

[0089] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0090] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A method for preparing a variable pitch data transmission line, characterized in that: Includes steps: Providing a core wire assembly to be wrapped and a wrapping base material tape; Setting a variable wrapping pitch for the wrapped substrate tape; The core wire assembly is wrapped with the wrapping substrate tape in a transverse wrapping manner to form a wrapping structure; wherein the transverse wrapping manner has the variable wrapping pitch; Based on the core wire assembly and the winding structure, a variable pitch data transmission line is obtained.

2. The method for preparing a variable pitch data transmission line according to claim 1, characterized in that: The variable wrapping pitch setting includes at least one of setting the wrapping angle and setting the width of the wrapped substrate tape.

3. The method for preparing a variable pitch data transmission line according to claim 2, characterized in that: The method of using the wrapped substrate tape to wrap the core wire assembly in a transverse wrapping manner to form a wrapped structure includes: Using a wrapping substrate tape of the same width, wrapping the core wire assembly in a transverse wrapping manner with a varying wrapping angle to form a wrapping structure for a variable pitch data transmission line; or, By using wrapping substrate tapes of different widths and wrapping the core wire assembly in a transverse wrapping manner with the same wrapping angle, a wrapping structure of a variable pitch data transmission line is formed.

4. The method for preparing a variable pitch data transmission line according to any one of claims 2 to 3, characterized in that: The step of setting at least one of the wrapping angle and the wrapping substrate tape width comprises: Set a variable wrapping angle; or, Setting a variable wrapping substrate tape width; or, A variable wrapping angle is set and a variable width of the wrapped substrate tape is set.

5. The method for preparing a variable pitch data transmission line according to claim 4, characterized in that: The said setting of the variable wrapping angle includes: setting a randomly variable wrapping angle, setting a wrapping angle that changes in stages and repeats in stages, setting a wrapping angle that fluctuates in a sinusoidal curve, or setting a wrapping angle that changes in a noise curve; The variable width of the wrapping substrate tape includes: setting a randomly variable width of the wrapping substrate tape, setting a width of the wrapping substrate tape that changes during stages and is repeated in stages, setting a width of the wrapping substrate tape that fluctuates in a sinusoidal curve, or setting a width of the wrapping substrate tape that changes in a noise curve.

6. The method for preparing a variable pitch data transmission line according to claim 1, characterized in that: The method of using the wrapped substrate tape to wrap the core wire assembly in a transverse wrapping manner to form a wrapped structure includes: By using the wrapping base tape, at least one of a variable wrapping angle and a variable wrapping base tape width is selected, and the core wire assembly is wrapped transversely in a stacking order to form a stacked at least two-layer wrapping structure on the same core wire assembly.

7. The method for preparing a variable pitch data transmission line according to claim 6, characterized in that: The method of using the wrapped substrate tape, selecting at least one of a variable wrapping angle and a variable wrapping substrate tape width, and wrapping the core wire assembly in a transverse wrapping manner in a stacking order comprises: Using the wrapping substrate tape, selecting at least one of the same changing wrapping angle and the same changing wrapping substrate tape width, selecting at least one of the different initial wrapping angle and the different wrapping substrate tape width, and wrapping the core wire assembly in a transverse wrapping manner in the order of inner layer first and outer layer later; or, By using the wrapping base material tape, at least one of the wrapping angles and the widths of the wrapping base material tape are selected to wrap the core wire assembly in a transverse wrapping manner in a stacking order of inner layer first and outer layer later.

8. A variable pitch data transmission line, characterized in that: Including core wire assembly and wrapping structure; The wrapping structure is wrapped around the core wire component in a transverse wrapping manner and has a variable wrapping pitch.

9. The variable pitch data transmission line according to claim 8, characterized in that: The variable wrapping pitch has at least one of a variable wrapping angle and a variable width of the wrapped substrate tape.

10. The variable pitch data transmission line according to claim 9, characterized in that: The wrapping structure is formed by wrapping a base material tape with the same width around the core wire assembly in a transverse wrapping manner with a varying wrapping angle; or, The wrapping structure is formed by wrapping substrate tapes with different widths around the core wire assembly in a transverse wrapping manner with the same wrapping angle; or, The core wire assembly includes a conductor, and the wrapping structure includes at least one of an insulating layer, a protective layer and a shielding layer; or, The core wire assembly includes an insulating layer, and the wrapping structure includes at least one of a protective layer and a shielding layer.

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