High-rate data transmission line and high-rate data transmission method

Abstract

The invention relates to a high-rate data transmission line and a high-rate data transmission method. The high-rate data transmission line comprises a first sub-line and a second sub-line, the first sub-line and the second sub-line have the same differential line pair and are used for transmitting the same signal. According to the high-speed data transmission line, the four-wire differential design is creatively provided under the condition that manufacturing defects cannot be completely eradicated or perfect, although the symmetry problem of the differential line pair still exists, the two same differential line pairs can almost perfectly solve the symmetry problem which cannot be solved by a traditional technology, and the high-speed data transmission line has the advantages of being simple in structure, convenient to use and high in practicability. The processing defect pair between the lines can be flushed away by simply utilizing a differential calculation mode, and the zero phase difference and the zero time delay difference in a real sense can be theoretically realized, so that the method can be theoretically used for transmitting differential signals of 100Ghz and even higher frequency.

Description

Technical Field

[0001] The present application relates to the field of communication cables, and in particular to a high-speed data transmission line and a high-speed data transmission method. Background Art

[0002] High-speed data transmission lines usually use differential line pairs for signal transmission. One of the signal lines in the differential line pair transmits the original signal, and the other transmits a signal that is inverted from the original signal. The receiving end obtains the signal voltage difference between the two signal paths, so that the interference of the two signal lines is consistent, and the difference can be taken to eliminate the influence of interference, so the ability to resist external interference is strong.

[0003] However, in actual products, it is impossible to make the two signal lines completely consistent. Due to the slight difference in the length and propagation speed of the two lines, the signals will not be completely inverted, but will have a certain phase difference, resulting in a delay difference (SKEW, also known as propagation delay difference), which will adversely affect the transmission performance of the line.

[0004] As the transmission rate increases, the delay difference becomes more and more important. Even a small delay difference at high frequencies will lead to a significant decrease in the transmission performance of the cable. Taking the PCIe transmission protocol as an example, the transmission frequency of PCIe4.0 is 12GHz, and the corresponding delay difference requirement is 15PS. When the transmission rate reaches 24GHz in PCIe5.0, the delay difference requirement is 7PS. When it comes to PCIe7.0, the transmission rate reaches 48GHz, and the corresponding delay difference is also increased to 2PS.

[0005] Traditional technologies have been used to improve SKEW performance by improving the consistency between the two wires, such as pairing the outer diameters of the core wires or dividing an axis into two axes and then wrapping them with paper. In addition, the air content between the two wires can be reduced by filling and pressing to prevent the combined dielectric constant of the medium from changing when air participates in signal transmission, thereby causing the propagation speeds of the two wires to be inconsistent and resulting in a phase difference.

[0006] However, the manufacturing process usually cannot achieve perfect symmetry in theory, and there will always be differences in the wire diameters of the two core wires, and this difference will be superimposed with the length of the wire. The full extrusion cannot be completely full and completely symmetrical. The resulting deviation will cause the SKEW between the wire pairs to be superimposed with the wire length.

[0007] For high-speed data transmission lines with lower product performance requirements, such phase difference and delay difference are acceptable, but for high-speed data transmission lines with higher product performance requirements, such phase difference and delay difference are unacceptable, which has become one of the key bottlenecks restricting product performance improvement and needs to be solved urgently. Summary of the invention

[0008] Based on this, it is necessary to provide a high-speed data transmission line and a high-speed data transmission method.

[0009] In one embodiment, a high-speed data transmission line includes a first sub-line and a second sub-line;

[0010] The first sub-line and the second sub-line have the same differential line pair and are used to transmit the same signal.

[0011] The above-mentioned high-speed data transmission lines, in the case that manufacturing defects cannot be completely eliminated and it is impossible to achieve perfection, pioneered the proposal of a four-wire differential design. Although the symmetry problem of the differential line pair itself still exists, the same two differential line pairs can almost perfectly solve the symmetry problem that traditional technology cannot overcome. The process defects between the lines can be offset simply by using the differential calculation method. In theory, it can achieve true zero phase difference and zero delay difference. Therefore, in theory, it can be used to transmit differential signals of 100Ghz or even higher frequencies.

[0012] In one embodiment, the high-speed data transmission line further includes a limiter, and the limiter is in contact with the first sub-line and the second sub-line respectively, and is used to maintain the relative position relationship between the first sub-line and the second sub-line.

[0013] In one embodiment, the limiting body is an outer protective layer, and the limiting body is coated outside the first sub-wire and the second sub-wire.

[0014] In one embodiment, the high-speed data transmission line is provided with a second inner layer inside the limiting body, and the second inner layer is arranged between the first sub-line and the second sub-line.

[0015] In one embodiment, the second inner layer is further coated on the first sub-wire and the second sub-wire; and / or,

[0016] The high-speed data transmission line is also provided with a second shielding layer;

[0017] The second shielding layer covers the first sub-wire, the second sub-wire and the second inner layer;

[0018] The limiting body is coated outside the second shielding layer.

[0019] In one embodiment, the high-speed data transmission line is provided with a second air layer inside the limiting body, and the second air layer is arranged between the first sub-line and the second sub-line.

[0020] In one of the embodiments, the high-speed data transmission line is further provided with a second shielding layer;

[0021] The second shielding layer covers the first sub-wire, the second sub-wire and the second air layer;

[0022] The limiting body is coated outside the second shielding layer.

[0023] In one embodiment, the limiting body is an adhesive body, and the first sub-wire and the second sub-wire are bonded together through the limiting body.

[0024] In one embodiment, the first sub-line and the second sub-line are arranged side by side or stacked up and down.

[0025] In one embodiment, the differential line pair of the first sub-line and the differential line pair of the second sub-line are arranged axially symmetrically, centrally symmetrically, or shifted and overlapped.

[0026] In one embodiment, the first sub-line and the second sub-line are configured identically or are manufactured using the same equipment and the same process.

[0027] In one embodiment, the first sub-line and the second sub-line are both basic data transmission lines, and the basic data transmission line includes the differential line pair, a first shielding layer and an outer layer;

[0028] The differential line pair includes two core wires, each of which includes a conductor and an insulator covering the conductor;

[0029] The first shielding layer is coated on the differential line, and the outer coating layer is coated on the outside of the first shielding layer.

[0030] Exemplarily, in one embodiment, the first shielding layer of the first sub-wire and the first shielding layer of the second sub-wire have the same grounding position; or, the first shielding layer of the first sub-wire and the first shielding layer of the second sub-wire are configured to be connected at a grounding position, or to be grounded in a connected state.

[0031] Exemplarily, in one embodiment, the high-speed data transmission line further includes a first inner layer wrapped in the first shielding layer, the first inner layer is arranged between the two core wires and wrapped around the first sub-wire and the second sub-wire; or,

[0032] The high-speed data transmission line is further provided with a first air layer inside the first shielding layer, and the first air layer is arranged between the two core wires.

[0033] In one embodiment, a high-speed data transmission method comprises the steps of:

[0034] Providing a first sub-line and a second sub-line with a high-speed data transmission line, wherein the first sub-line and the second sub-line have the same differential line pair;

[0035] Using the high-speed data transmission line to perform data transmission;

[0036] The two differential line pairs of the high-speed data transmission line are used to perform differential calculation.

[0037] In one embodiment, the first sub-wire and the second sub-wire have the same differential wire pair, including: the first core wire of the first sub-wire is the same as the first core wire of the second sub-wire, and the second core wire of the first sub-wire is the same as the second core wire of the second sub-wire;

[0038] The high-speed data transmission line is used for data transmission, including: the first core line of the first sub-line and the second core line of the second sub-line transmit the same phase signal, and the second core line of the first sub-line and the first core line of the second sub-line transmit the same phase signal;

[0039] Using the two differential line pairs of the high-speed data transmission line to perform differential calculations, including:

[0040] A first difference calculation is performed using a first core line of the first sub-line and a first core line of the second sub-line, or a second difference calculation is performed using a second core line of the first sub-line and a second core line of the second sub-line; or,

[0041] A third differential calculation is performed using the first core line of the first sub-line and the second core line of the first sub-line, and a fourth differential calculation is performed using the first core line of the second sub-line and the second core line of the second sub-line, and then a first overall differential calculation is performed using the result of the third differential calculation and the result of the fourth differential calculation; or,

[0042] A fifth differential calculation is performed using the first core line of the first sub-line and the second core line of the second sub-line, and a sixth differential calculation is performed using the second core line of the first sub-line and the first core line of the second sub-line, and then a second overall differential calculation is performed using the result of the fifth differential calculation and the result of the sixth differential calculation. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] 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.

[0044] FIG. 1 is a cross-sectional view of a first embodiment of a high-speed data transmission line described in the present application.

[0045] FIG. 2 is a cross-sectional view of a basic data transmission line of the embodiment shown in FIG. 1 .

[0046] FIG. 3 is a cross-sectional view of a strictly symmetrical basic data transmission line.

[0047] FIG. 4 is a cross-sectional view of a basic data transmission line of the second embodiment of the high-speed data transmission line described in the present application.

[0048] FIG. 5 is a cross-sectional view of a basic data transmission line of the third embodiment of the high-speed data transmission line described in the present application.

[0049] FIG. 6 is a cross-sectional view of a fourth embodiment of the high-speed data transmission line described in the present application.

[0050] FIG. 7 is a cross-sectional view of a fifth embodiment of the high-speed data transmission line described in the present application.

[0051] FIG. 8 is a cross-sectional view of a sixth embodiment of the high-speed data transmission line described in the present application.

[0052] FIG. 9 is a cross-sectional view of a seventh embodiment of the high-speed data transmission line described in the present application.

[0053] FIG. 10 is a cross-sectional view of an eighth embodiment of the high-speed data transmission line described in the present application.

[0054] FIG. 11 is a cross-sectional view of a ninth embodiment of the high-speed data transmission line described in the present application.

[0055] FIG. 12 is a cross-sectional view of a tenth embodiment of the high-speed data transmission line described in the present application.

[0056] FIG. 13 is a cross-sectional view of the eleventh embodiment of the high-speed data transmission line described in the present application.

[0057] Figure numerals: differential line pair 100, conductor 101, insulator 102, first core wire 110, second core wire 120, first inner sheath 200, first air layer 300, first shielding layer 400, first sub-shielding layer 410, second sub-shielding layer 420, outer sheath 500, high-speed data transmission line 900, first sub-wire 910, second sub-wire 920, limiter 930, second inner sheath 940, second air layer 950, second shielding layer 960, basic data transmission line 970. DETAILED DESCRIPTION

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] The present application discloses a high-speed data transmission line and a high-speed data transmission method, which include some or all of the technical features of the following embodiments; as an example, the high-speed data transmission line includes some or all of the following structures. In one embodiment of the present application, a high-speed data transmission line includes a first sub-line and a second sub-line; the first sub-line and the second sub-line have the same differential line pair and are used to transmit the same signal. The above-mentioned high-speed data transmission line, in the case where manufacturing defects cannot be completely eliminated and it is impossible to achieve perfection, pioneered a four-wire differential design. Although the symmetry problem of the differential line pair itself still exists, the same two differential line pairs can almost perfectly solve the symmetry problem that traditional technology cannot overcome. The process defects between the lines can be offset by simply using the differential calculation method. In theory, it can achieve true zero phase difference and zero delay difference, so it can theoretically be used to transmit differential signals of 100Ghz or even higher frequencies. The high-speed data transmission line and the high-speed data transmission method are described in detail below in conjunction with Figures 1 to 13.

[0064] In one embodiment, a high-speed data transmission line 900 is shown in FIG1 , which includes a first sub-line 910 and a second sub-line 920; as an example, the first sub-line 910 and the second sub-line 920 may be conventional high-speed data transmission lines, or may be only a partial structure of a conventional high-speed data transmission line. A person skilled in the art may understand that the first and the second in the first sub-line 910 and the second sub-line 920 are named for the convenience of distinction, and in essence, the first sub-line 910 and the second sub-line 920 are both conventional high-speed data transmission lines, or partial structures of conventional high-speed data transmission lines. A person skilled in the art may also understand that FIG1 shows a cross-sectional view of the high-speed data transmission line 900 along its extension direction.

[0065] In various embodiments, the first sub-line 910 and the second sub-line 920 have the same differential line pair 100 and are used to transmit the same signal; as an example, the same signal is transmitted for differential calculation, and finally high-frequency differential signal transmission is achieved. In one embodiment, the first sub-line 910 and the second sub-line 920 are configured in the same manner or are manufactured by the same process using the same equipment. For example, in one embodiment, the first sub-line 910 and the second sub-line 920 are both traditional high-speed data transmission lines, and are manufactured by the same production equipment and the same production process. With such a design, the structures of the first sub-line 910 and the second sub-line 920 are the same, and even the defects are the same, so the signals transmitted by the first sub-line 910 and the second sub-line 920 can be guaranteed to be consistent.

[0066] As an example, the differential wire pair 100 includes two core wires, each of which includes a conductor 101 and an insulator 102 coated outside the conductor 101; as shown in Figure 1, the differential wire pair 100 includes a first core wire 110 and a second core wire 120, the first core wire 110 includes a conductor 101 and an insulator 102 coated outside the conductor 101, and the second core wire 120 also includes a conductor 101 and an insulator 102 coated outside the conductor 101. For example, as mentioned above, when manufacturing defects cannot be completely eliminated and perfection cannot be achieved, the first core wire 110 and the second core wire 120 are prepared and formed at the same time to obtain the differential wire pair 100, but the first core wire 110 and the second core wire 120 may not be exactly the same. As shown in FIG2 , the conductor 101 of the first core wire 110 may have a larger deviation relative to the insulator 102, and the conductor 101 of the second core wire 120 may have a smaller deviation relative to the insulator 102, and it is impossible to achieve the ideal, perfect, and completely symmetrical differential wire pair 100 as shown in FIG3 . Therefore, the manufacturing defects of traditional high-speed data transmission lines cannot be completely eliminated, and the wire itself cannot be perfect. The deviation will cause the SKEW between wire pairs to become larger and larger as the wire length is added, and it will eventually become unacceptable.

[0067] In one embodiment, the limiting body 930 contacts the first sub-line 910 and the second sub-line 920 respectively, and is used to maintain the relative positional relationship between the first sub-line 910 and the second sub-line 920, so that the first sub-line 910 and the second sub-line 920 maintain a certain positional relationship. As an example, the limiting body 930 is an adhesive body, and the first sub-line 910 and the second sub-line 920 are bonded together through the limiting body 930; or, the limiting body 930 is a sleeve, which is placed outside the first sub-line 910 and the second sub-line 920, and the first sub-line 910 and the second sub-line 920 are tightly abutted against each other through the limiting body 930; or, the limiting body 930 is a snap-on component, and the first sub-line 910 and the second sub-line 920 are snap-on together through the limiting body 930; or, in one embodiment, as shown in Figure 1, the limiting body 930 is an outer protective layer, and the limiting body 930 is coated on the outside of the first sub-line 910 and the second sub-line 920, that is, the first sub-line 910 and the second sub-line 920 are regarded as a whole, and the limiting body 930 is coated on the outside of the whole. The following mainly uses the example of the limiter 930 as an outer protective layer covering the first sub-line 910 and the second sub-line 920 to illustrate the high-speed data transmission line 900. However, as long as the relative position relationship between the first sub-line 910 and the second sub-line 920 can be maintained, it can be used as the limiter 930.

[0068] It should be noted that since the two sub-wires of the high-speed data transmission line 900, including the first sub-wire 910 and the second sub-wire 920, have formed their own independent shielding cavities, if the distance between the processing ends is not considered, in theory the two sub-wires can be placed at will without limiting; however, for the overall wire product, a limiting body 930 can be used to connect the two sub-wires to maintain the relative position relationship between the first sub-wire 910 and the second sub-wire 920.

[0069] It can be understood that for the high-speed data transmission line 900, the limiter 930 is in the extension direction of the high-speed data transmission line 900, which can also be called the axial direction, and is wrapped around the first sub-line 910 and the second sub-line 920. Those skilled in the art can understand that this will not affect the basic functions of the conductor 101 of the first sub-line 910 and the second sub-line 920, such as signal transmission and electrical connection.

[0070] In one embodiment, as shown in FIG. 2 or FIG. 3, the first sub-line 910 and the second sub-line 920 are both basic data transmission lines 970, and the basic data transmission line 970 includes the differential line pair 100, the first shielding layer 400 and the outer layer 500; the differential line pair 100 includes two core lines, each of which includes a conductor 101 and an insulator 102 coated outside the conductor 101; the first shielding layer 400 is coated outside the differential line pair 100, and the outer layer 500 is coated outside the first shielding layer 400. In other embodiments, the basic data transmission line 970 can also adopt a traditional high-speed data transmission line, that is, directly adopt a traditional high-speed data transmission line as the first sub-line 910 and the second sub-line 920 of the high-speed data transmission line 900 described in the present application. Such a design has little change in traditional production processes and products. Only the embodiments related to the limiter 930 need to add new process steps later, thereby greatly reducing the cost of process update, making the high-speed data transmission line 900 described in the present application easy to promote and apply.

[0071] In order to ensure that the phases of the two sub-wires are completely consistent, exemplarily, in one embodiment, the first shielding layer 400 of the first sub-wire 910 and the first shielding layer 400 of the second sub-wire 920 have the same grounding position; or, the first shielding layer 400 of the first sub-wire 910 and the first shielding layer 400 of the second sub-wire 920 are configured to be connected at a grounded position, or to be grounded in a connected state. For an embodiment with a limiter 930, exemplarily, the first shielding layer 400 of the first sub-wire 910 and the first shielding layer 400 of the second sub-wire 920 are configured to be led out and connected at the same position of the limiter 930, and to be grounded in a connected state. For the embodiment in which the stopper 930 has the second shielding layer 960, illustratively, the first shielding layer 400 of the first sub-line 910 and the first shielding layer 400 of the second sub-line 920 are configured to be led out at the same position of the stopper 930 and respectively connected to the second shielding layer 960, or led out at the same position of the stopper 930 and connected, jointly connected to the second shielding layer 960, and grounded through the second shielding layer 960. Such a design further ensures that the first sub-line 910 and the second sub-line 920 correspond in phase, that is, it ensures that the core wires of the same signal have the same phase signal.

[0072] In some embodiments, as shown in FIG. 2 or FIG. 3, the high-speed data transmission line 900 further includes a first inner layer 200 encapsulated in the first shielding layer 400, that is, the first shielding layer 400 is encapsulated outside the first inner layer 200; the first inner layer 200 is arranged between the two core wires and encapsulated outside the first sub-wire 910 and the second sub-wire 920; the first inner layer 200 is the inner layer, and the first here is named to distinguish it from the second inner layer 940 in other embodiments. The materials of the first inner layer 200 and the second inner layer 940 can be the same or different, the shapes of the first inner layer 200 and the second inner layer 940 can be similar or different, and the other characteristics of the first inner layer 200 and the second inner layer 940 are similar, and the other similarly named structures are similar, and will not be repeated below.

[0073] Alternatively, the first inner layer 200 may not be used. In one embodiment, as shown in FIG4 , the high-speed data transmission line 900 is further provided with a first air layer 300 inside the first shielding layer 400, and the first air layer 300 is provided between the two core wires. For the embodiment with the first inner layer 200, in some cases, as shown in FIG5 , due to manufacturing process or material problems, the first inner layer 200 may not be completely covered outside the first sub-wire 910 and the second sub-wire 920, and an air gap may be left in the middle to form the first air layer 300. Those skilled in the art can understand that such process or material problems will affect the first sub-wire 910 and the second sub-wire 920 of the high-speed data transmission line 900 at the same time, so the data transmission problem of the high-speed data transmission line 900 will be offset and will not cause uncontrollable interference.

[0074] For example, in some embodiments, as shown in FIG. 2 or FIG. 4 , the eccentricity of the conductor 101 relative to the insulator 102 is different, which affects the symmetry of the core of the differential line pair 100, wherein the core includes a first core 110 and a second core 120; or as shown in FIG. 5 , the two cores are not flush, which affects the symmetry of the core of the differential line pair 100. However, the present application uses the first sub-line 910 and the second sub-line 920 as separate basic data transmission lines 970, that is, the two sub-lines of the high-speed data transmission line 900 are used as separate basic data transmission lines 970, so the phase difference problem caused by the symmetry of the core of the differential line pair 100 is almost perfectly avoided.

[0075] In some embodiments, as shown in FIG. 2 or FIG. 4 , the first shielding layer 400 may be a single-layer structure; or exemplarily, in other embodiments, as shown in FIG. 3 or FIG. 5 , the first shielding layer 400 may include a first sub-shielding layer 410 and a second sub-shielding layer 420 , the first sub-shielding layer 410 is coated on the outside of the differential line pair 100, and the second sub-shielding layer 420 is coated on the outside of the first sub-shielding layer 410 , or vice versa; and the outer layer 500 is coated on the outside of the second sub-shielding layer 420 . For the embodiment with the first inner quilt layer 200 or the first air layer 300, the first sub-shielding layer 410 is coated outside the first inner quilt layer 200 and / or the first air layer 300, that is, the first sub-shielding layer 410 integrally coats the differential line pair 100 and the first inner quilt layer 200, or integrally coats the differential line pair 100 and the first air layer 300, or integrally coats the differential line pair 100, the first inner quilt layer 200 and the first air layer 300. Exemplarily, the first sub-shielding layer 410 is a copper foil layer, and the second sub-shielding layer 420 is an aluminum foil layer. Such a design is conducive to ensuring the accuracy of signal transmission and reducing external interference as much as possible.

[0076] In one embodiment, as shown in FIG1 , there is a second air layer 950 between the first sub-line 910 and the second sub-line 920. As an example, the stopper 930 is an outer protective layer, and the stopper 930 is coated on the outside of the first sub-line 910 and the second sub-line 920; the high-speed data transmission line 900 is provided with a second air layer 950 inside the stopper 930, and the second air layer 950 is arranged between the first sub-line 910 and the second sub-line 920. Or in one embodiment, as shown in FIG6 , the stopper 930 is an outer protective layer, and the stopper 930 is coated on the outside of the first sub-line 910 and the second sub-line 920; the high-speed data transmission line 900 is provided with a second inner layer 940 inside the stopper 930, and the second inner layer 940 is arranged between the first sub-line 910 and the second sub-line 920. In one embodiment, the second inner layer 940 also covers the outside of the first sub-line 910 and the second sub-line 920; that is, similar to the first inner layer 200 shown in Figure 5, the second inner layer 940 is partially arranged between the first sub-line 910 and the second sub-line 920, and partially covers the outside of the first sub-line 910 and the second sub-line 920, so that the first sub-line 910 and the second sub-line 920 are covered by the second inner layer 940 as a whole.

[0077] In one of the embodiments, the high-speed data transmission line 900 is shown in FIG7 , which is different from the embodiment shown in FIG1 in that the embodiment shown in FIG1 presents that the eccentricity of the conductor 101 of the core wire of the differential wire pair 100 in the high-speed data transmission line 900 is different relative to the insulator 102, which affects the symmetry of the core wire of the differential wire pair 100 , while the embodiment shown in FIG7 presents that the core wires of the differential wire pair 100 in the high-speed data transmission line 900 are not flush, which affects the symmetry of the core wire of the differential wire pair 100 , but since the first sub-wire 910 and the second sub-wire 920 are respectively used as separate basic data transmission lines 970 , the process defects between the wires can be offset simply by using a differential calculation method, which almost perfectly solves the symmetry problem that traditional technology cannot overcome, and theoretically can achieve true zero phase difference and zero delay difference, so theoretically it can be used to transmit differential signals of 100Ghz or even higher frequencies.

[0078] In one embodiment, the high-speed data transmission line 900 is shown in FIG8 , which is different from the embodiment shown in FIG7 in that, in the embodiment shown in FIG7 , the stopper 930 is an outer protective layer, and the stopper 930 is coated on the outside of the first sub-line 910 and the second sub-line 920; the high-speed data transmission line 900 is provided with a second air layer 950 inside the stopper 930, and the second air layer 950 is arranged between the first sub-line 910 and the second sub-line 920. In the embodiment shown in FIG8 , the stopper 930 is an outer protective layer, and the stopper 930 is coated on the outside of the first sub-line 910 and the second sub-line 920; the high-speed data transmission line 900 is provided with a second inner layer 940 inside the stopper 930, and the second inner layer 940 is arranged between the first sub-line 910 and the second sub-line 920. In a specific product, the relevant embodiments can be flexibly selected according to actual needs.

[0079] In the embodiments shown in FIG. 1, FIG. 6 to FIG. 8, according to the direction shown in the figure, the first sub-line 910 and the second sub-line 920 are arranged side by side on the left and right sides; in other embodiments, the first sub-line 910 and the second sub-line 920 may also have other arrangements, in some embodiments, as shown in FIG. 9 or FIG. 10, according to the direction shown in the figure, the first sub-line 910 and the second sub-line 920 are arranged in a stacked manner up and down; it can be understood that these arrangements are similar when viewed from another direction. As an example, in some embodiments, as shown in FIG. 11 or FIG. 12, according to the direction shown in the figure, the first sub-line 910 and the second sub-line 920 are arranged side by side on the left and right sides. The high-speed data transmission line 900 described in each embodiment of the present application is not particularly limited to this, as long as it can reflect the design elements of the high-speed data transmission line 900 including the first sub-line 910 and the second sub-line 920.

[0080] In one embodiment, the differential line pair 100 of the first sub-line 910 and the differential line pair 100 of the second sub-line 920 are arranged axially symmetrically or centrally symmetrically. Alternatively, as shown in FIG. 6 to FIG. 12 , the differential line pair 100 of the first sub-line 910 and the differential line pair 100 of the second sub-line 920 are arranged to move and overlap, that is, after the differential line pair 100 of the first sub-line 910 moves in a certain direction, it can completely overlap or nearly completely overlap with the differential line pair 100 of the second sub-line 920 in space. In theory, complete overlap is required, but in fact, even if the same machine uses the same process for the same material, there are still extremely subtle differences, so it is called nearly complete overlap.

[0081] Alternatively, in some embodiments, the first sub-line 910 and the second sub-line 920 are axially symmetrically arranged, centrally symmetrically arranged, or moved and overlapped, that is, after the first sub-line 910 moves in a certain direction, it can completely overlap or approximately completely overlap with the second sub-line 920 in space.

[0082] In one embodiment, as shown in FIG. 13 , the stopper 930 is an outer protective layer, and the stopper 930 is coated on the outside of the first sub-wire 910 and the second sub-wire 920; the high-speed data transmission line 900 is further provided with a second shielding layer 960, and the second shielding layer 960 is coated on the outside of the first sub-wire 910 and the second sub-wire 920, and the stopper 930 is coated on the outside of the second shielding layer 960. By designing the second shielding layer 960, it is beneficial to provide a better shielding effect, so that the two differential line pairs 100 of the high-speed data transmission line 900, that is, the differential line pair 100 of the first core line 110 and the differential line pair 100 of the second core line 120, can ensure relative phase consistency.

[0083] For the embodiments with a second inner layer 940, in one embodiment, the high-speed data transmission line 900 is also provided with a second shielding layer 960; the second shielding layer 960 is coated on the outside of the first sub-line 910, the second sub-line 920 and the second inner layer 940; the limiting body 930 is coated on the outside of the second shielding layer 960.

[0084] For the embodiments with a second air layer 950, in one of the embodiments, the high-speed data transmission line 900 is also provided with a second shielding layer 960; the second shielding layer 960 is coated on the outside of the first sub-line 910, the second sub-line 920 and the second air layer 950; the limiting body 930 is coated on the outside of the second shielding layer 960.

[0085] In one embodiment, a high-speed data transmission method includes the following steps: providing a high-speed data transmission line 900 of a first sub-line 910 and a second sub-line 920, wherein the first sub-line 910 and the second sub-line 920 have the same differential line pair 100; using the high-speed data transmission line 900 for data transmission; and using the two differential line pairs 100 of the high-speed data transmission line 900 for differential calculation. As an example, the high-speed data transmission method includes the following steps: S10, providing a high-speed data transmission line of a first sub-line and a second sub-line, wherein the first sub-line and the second sub-line have the same differential line pair; S20, using the high-speed data transmission line for data transmission; S30, using the two differential line pairs of the high-speed data transmission line for differential calculation. With such a design, when manufacturing defects cannot be completely eliminated and cannot be perfect, by adopting the high-speed data transmission method, four-wire differential calculation is performed. Although the symmetry problem of the differential line pair 100 itself still exists, the same two differential line pairs 100 can almost perfectly solve the symmetry problem that traditional technology cannot overcome. The process defects between the lines can be offset and eliminated simply by using the differential calculation method. In theory, true zero phase difference and zero delay difference can be achieved, so that it can be used to transmit relatively higher frequency differential signals.

[0086] In one embodiment, the first sub-wire 910 and the second sub-wire 920 have the same differential line pair 100, including: the first core line 110 of the first sub-wire 910 is the same as the first core line 110 of the second sub-wire 920, and the second core line 120 of the first sub-wire 910 is the same as the second core line 120 of the second sub-wire 920; the use of the high-speed data transmission line 900 for data transmission includes: the first core line 110 of the first sub-wire 910 and the second core line 120 of the second sub-wire 920 transmit The same phase signal, the second core wire 120 of the first sub-wire 910 and the first core wire 110 of the second sub-wire 920 transmit the same phase signal; the two differential line pairs 100 of the high-speed data transmission line 900 are used to perform differential calculations, including: using the first core wire 110 of the first sub-wire 910 and the first core wire 110 of the second sub-wire 920 to perform a first differential calculation, or using the second core wire 120 of the first sub-wire 910 and the second core wire 120 of the second sub-wire 920 to perform a second differential calculation, in this case It is no longer necessary to perform differential calculation on the results of the first differential calculation and the second differential calculation. This is because the phase of the differential between the first core line and the first core line is different from the phase of the differential between the second core line and the second core line. If a second differential is performed, the delay difference will be very poor. The first core lines of the two sub-lines can be directly used for differential calculation. The two lines have the same phase and no delay difference; or, the first core line 110 of the first sub-line 910 and the second core line 120 of the first sub-line 910 are used for the third differential calculation, and the first core line 110 of the second sub-line 920 and the second core line 120 of the second sub-line 920 are used for the third differential calculation. The second core wire 120 of the sub-wire 920 performs a fourth differential calculation, and then uses the result of the third differential calculation and the result of the fourth differential calculation to perform a first overall differential calculation; or, uses the first core wire 110 of the first sub-wire 910 and the second core wire 120 of the second sub-wire 920 to perform a fifth differential calculation, and uses the second core wire 120 of the first sub-wire 910 and the first core wire 110 of the second sub-wire 920 to perform a sixth differential calculation, and then uses the result of the fifth differential calculation and the result of the sixth differential calculation to perform a second overall differential calculation. This can further solve the process defect problem caused by the inconsistent lengths of the two sub-wires. In some embodiments, the high-speed data transmission method is implemented based on the high-speed data transmission line 900 described in any embodiment. With such a design, the high-speed data transmission method also has the beneficial technical effects of the high-speed data transmission line 900, which will not be elaborated here.

[0087] Considering the problem of manufacturing process, theoretically perfectly symmetrical differential line pairs do not exist, but the differential line pairs obtained by the same process have the same subtle process defects under normal circumstances. Therefore, when the defects cannot be completely eliminated, this application innovatively adopts a four-wire differential solution and uses a differential algorithm to offset the process defects between lines. It can be understood that, as shown in the embodiments of Figures 1, 6 to 12, although the first sub-line 910 and the second sub-line 920 are used to realize the four-wire differential, as an example, two differential line pairs 100 are arranged in parallel up and down or left and right to form a group and then coated with a total outer layer. However, based on this four-wire differential, various forms of changes can be further made, such as six-wire differential, eight-wire differential, etc., which are all within the scope of the first sub-line 910 and the second sub-line 920 having the same differential line pair 100 described in this application.

[0088] In the embodiment shown in FIGS. 1 and 6 to 12, the two differential line pairs 100 of the high-speed data transmission line 900 are similar to the traditional structure and also have various inevitable defects in the manufacturing process, resulting in a phase difference between the first core line 110 of the first sub-line 910 and the second core line 120 of the first sub-line 910 during transmission, and a phase difference between the first core line 110 of the second sub-line 920 and the second core line 120 of the second sub-line 920 during transmission. However, since the two line pairs are arranged in parallel and can form their own transmission closed loops, especially for the embodiment with the first shielding layer 400, the first shielding layer 400 can be used as a transmission 0 bit, thereby not being affected by external factors. type; therefore, when the two differential line pairs 100 of the first sub-line 910 and the second sub-line 920 are formed by the same equipment and the same material with the same process, since the first core wire 110 of the first sub-line 910 is the same as the first core wire 110 of the second sub-line 920, and the second core wire 120 of the first sub-line 910 is the same as the second core wire 120 of the second sub-line 920, the phases of the first core wire 110 of the first sub-line 910 and the first core wire 110 of the second sub-line 920 are completely consistent, and the phases of the second core wire 120 of the first sub-line 910 and the second core wire 120 of the second sub-line 920 are also completely consistent.

[0089] As an example, when in use, the first core wire 110 of the first sub-wire 910 and the second core wire 120 of the second sub-wire 920 transmit positive phase signals respectively, and the second core wire 120 of the first sub-wire 910 and the first core wire 110 of the second sub-wire 920 transmit negative phase signals respectively.

[0090] When receiving a signal, the terminal performs differential calculation on the signals of the first core wire 110 of the first sub-wire 910 and the first core wire 110 of the second sub-wire 920, and performs differential calculation on the signals of the second core wire 120 of the first sub-wire 910 and the second core wire 120 of the second sub-wire 920, which is equivalent to performing a cross-interchange between line pairs. The two sets of differential signals after the interchange can theoretically achieve zero phase difference, that is, the delay difference is 0.

[0091] Assume that due to various factors, there is a slight difference between the first core wire 110 of the first sub-wire 910 and the first core wire 110 of the second sub-wire 920, and there is also a slight difference between the second core wire 120 of the first sub-wire 910 and the second core wire 120 of the second sub-wire 920. As an example, assume that the first sub-wire 910 and the second sub-wire 920 are of different lengths, that is, unequal lengths, resulting in different phases between the first core wire 110 and the second core wire 120 of the first sub-wire 910 and the first core wire 110 and the second core wire 120 of the second sub-wire 920. In this way, the first core wire 110 of the first sub-wire 910 and the second core wire 120 of the first sub-wire 910 are different from each other. The phase φ12 of the signal V12 after differential 120 is also different from the phase φ34 of the signal V34 after differential 110 of the second sub-line 920 and the second core wire 120 of the second sub-line 920. However, as long as the phase difference of the signals of the first core wire 110 of the first sub-line 910 and the first core wire 110 of the second sub-line 920 is equal, and the phase difference of the signals of the second core wire 120 of the first sub-line 910 and the second core wire 120 of the second sub-line 920 is equal, the various embodiments of the high-speed data transmission line 900 and the high-speed data transmission method described in the present application can be used to minimize the impact of process defects of single-pair lines.

[0092] For ease of understanding, the first core wire 110 of the first sub-wire 910 is taken as line 1, the second core wire 120 of the first sub-wire 910 is taken as line 2, the first core wire 110 of the second sub-wire 920 is taken as line 3, and the second core wire 120 of the second sub-wire 920 is taken as line 4. The first core wire 110 of the first sub-wire 910 and the second core wire 120 of the second sub-wire 920 transmit the same phase signal, and the second core wire 120 of the first sub-wire 910 and the first core wire 110 of the second sub-wire 920 transmit the same phase signal. 0 transmits the same phase signal; that is, line 1 and line 4 transmit the same phase signal, line 2 and line 3 transmit the same phase signal, even if line 1 and line 3 are not of equal length, line 2 and line 4 are not of equal length, resulting in line 1, line 2, line 3, line 4 The phases of the four lines are different, and the phase φ12 of the signal V12 after the difference between line 1 and line 2 is different from the phase φ34 of the signal V34 after the difference between line 3 and line 4. However, as long as the phase difference 13 and the phase difference 24 are equal, the impact of process defects on the single pair of lines can be minimized by the following method.

[0093] As an example, specifically, a differential calculation is performed on the signals of the first core wire 110 of the first sub-wire 910 and the second core wire 120 of the second sub-wire 920 to obtain a positive signal V14 of a new phase; and a differential calculation is performed on the signals of the first core wire 110 of the second sub-wire 920 and the second core wire 120 of the first sub-wire 910 to obtain a negative signal V32 of a new phase, and then the whole is differentiated again, and the final received voltage difference = V14-V32 = (V1-V4)-(V3-V2) = (V1-V3)-(V4-V2). Due to their different lengths, line 1 and line 3 have a first phase difference, and line 2 and line 4 have a second phase difference. However, since the first phase difference is equal to the second phase difference, the asymmetry of a single pair of lines will not affect the overall delay difference.

[0094] From the above description, it can be seen that the present application can completely offset the process defects between line pairs by adopting a transposed multi-line differential solution, realize a true zero-delay differential signal, and can be used to transmit differential signals with frequencies above 100Ghz.

[0095] It should be noted that other embodiments of the present application also include high-speed data transmission lines and high-speed data transmission methods that can be implemented by combining the technical features in the above embodiments.

[0096] 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.

[0097] 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 high-speed data transmission line (900), characterized in that: It includes a first sub-line (910) and a second sub-line (920); The first sub-line (910) and the second sub-line (920) have the same differential line pair (100) and are used to transmit the same signal.

2. The high-speed data transmission line (900) according to claim 1, characterized in that: It also comprises a limiting body (930), the limiting body (930) being in contact with the first sub-line (910) and the second sub-line (920) respectively, and being used to maintain the mutual positional relationship between the first sub-line (910) and the second sub-line (920).

3. The high-speed data transmission line (900) according to claim 2, characterized in that: The limiting body (930) is an outer protective layer, and the limiting body (930) is coated outside the first sub-wire (910) and the second sub-wire (920).

4. The high-speed data transmission line (900) according to claim 3, characterized in that: The high-speed data transmission line (900) is provided with a second inner layer (940) inside the limiting body (930), and the second inner layer (940) is arranged between the first sub-line (910) and the second sub-line (920).

5. The high-speed data transmission line (900) according to claim 4, characterized in that: The second inner layer (940) further covers the first sub-line (910) and the second sub-line (920); and / or, The high-speed data transmission line (900) is also provided with a second shielding layer (960); The second shielding layer (960) covers the first sub-wire (910), the second sub-wire (920) and the second inner layer (940); The limiting body (930) is coated outside the second shielding layer (960).

6. The high-speed data transmission line (900) according to claim 3, characterized in that: The high-speed data transmission line (900) is provided with a second air layer (950) inside the limiting body (930), and the second air layer (950) is arranged between the first sub-line (910) and the second sub-line (920); and / or, The high-speed data transmission line (900) is further provided with a second shielding layer (960), the second shielding layer (960) covering the first sub-line (910), the second sub-line (920) and the second air layer (950); the limiting body (930) covers the second shielding layer (960).

7. The high-speed data transmission line (900) according to claim 2, characterized in that: The limiting body (930) is an adhesive body, and the first sub-line (910) and the second sub-line (920) are bonded together via the limiting body (930); or, The first sub-line (910) and the second sub-line (920) are arranged side by side or stacked up and down; or, The differential line pair (100) of the first sub-line (910) and the differential line pair (100) of the second sub-line (920) are arranged axially symmetrically, centrally symmetrically, or in a shifted overlapping arrangement; or, The first sub-line (910) and the second sub-line (920) are configured in the same manner or are manufactured using the same equipment and through the same manufacturing process.

8. The high-speed data transmission line (900) according to any one of claims 1 to 7, characterized in that: The first sub-line (910) and the second sub-line (920) are both basic data transmission lines (970), and the basic data transmission line (970) comprises the differential line pair (100), a first shielding layer (400) and an outer layer (500); The differential line pair (100) comprises two core wires, each of the core wires comprising a conductor (101) and an insulator (102) covering the conductor (101); The first shielding layer (400) is coated on the outside of the differential line pair (100), and the outer coating layer (500) is coated on the outside of the first shielding layer (400).

9. A high-speed data transmission method, characterized in that: Includes steps: A high-speed data transmission line (900) comprising a first sub-line (910) and a second sub-line (920) is provided, wherein the first sub-line (910) and the second sub-line (920) have the same differential line pair (100); Using the high-speed data transmission line (900) to perform data transmission; The two differential line pairs (100) of the high-speed data transmission line (900) are used to perform differential calculation.

10. The high-speed data transmission method according to claim 9, characterized in that: The first sub-wire (910) and the second sub-wire (920) have the same differential wire pair (100), comprising: a first core wire (110) of the first sub-wire (910) is the same as a first core wire (110) of the second sub-wire (920), and a second core wire (120) of the first sub-wire (910) is the same as a second core wire (120) of the second sub-wire (920); The high-speed data transmission line (900) is used for data transmission, comprising: the first core line (110) of the first sub-line (910) and the second core line (120) of the second sub-line (920) transmit the same phase signal, and the second core line (120) of the first sub-line (910) and the first core line (110) of the second sub-line (920) transmit the same phase signal; Using the two differential line pairs (100) of the high-speed data transmission line (900) to perform differential calculations, comprising: A first differential calculation is performed using the first core wire (110) of the first sub-wire (910) and the first core wire (110) of the second sub-wire (920), or a second differential calculation is performed using the second core wire (120) of the first sub-wire (910) and the second core wire (120) of the second sub-wire (920); or, A third differential calculation is performed using the first core line (110) of the first sub-line (910) and the second core line (120) of the first sub-line (910), and a fourth differential calculation is performed using the first core line (110) of the second sub-line (920) and the second core line (120) of the second sub-line (920), and then a first overall differential calculation is performed using the result of the third differential calculation and the result of the fourth differential calculation; or, A fifth differential calculation is performed using the first core line (110) of the first sub-line (910) and the second core line (120) of the second sub-line (920), and a sixth differential calculation is performed using the second core line (120) of the first sub-line (910) and the first core line (110) of the second sub-line (920), and then a second overall differential calculation is performed using the result of the fifth differential calculation and the result of the sixth differential calculation.

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