A cable device with self-contained mode conversion and signal conversion method thereof

Abstract

The present invention discloses a cable device with built-in mode conversion and a signal conversion method thereof. The cable device comprises: an integrated cable structure, a metal component, and a dielectric material structure; the integrated cable structure is provided with a receiving channel for the dielectric material structure and the cable core to pass through; the cable core is partially embedded in the dielectric material structure; the metal component covers the outer wall of the dielectric material structure; the metal component includes an upper metal cladding and a lower metal cladding; the upper metal cladding is provided with a connection port through which the cable core extends; the upper metal cladding and the lower metal cladding are both connected to the integrated cable structure, and both the upper metal cladding and the lower metal cladding are composed of a gradient structure and a parallel transition structure. The device has a simple structure and is suitable for ultra-wideband operation. It can be directly connected to electrical equipment at the single cable level and can also achieve mutual conversion between coaxial cable mode and differential output mode.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and in particular to a cable device with self-contained mode conversion and a signal conversion method thereof. Background Art

[0002] In electrical engineering, differential output signals are a common signal transmission method, suitable for application scenarios that require improved signal integrity, anti-interference capabilities, and long-distance transmission. For example, in analog signal applications, oscilloscope probes and precision instruments use differential input and output to improve signal measurement accuracy. RF ICs in RF transmission and reception modules typically use differential signals to transmit RF signals to improve anti-interference capabilities and signal integrity. In the battery management system of electric vehicles, differential signals are used to detect battery pack voltage and temperature. During PCB design, the length of the differential input signal lines should be matched to avoid phase deviation caused by asymmetry.

[0003] In practical applications, the transmission of differential signals requires the use of two cables of the same specifications for energy transfer; the corresponding electrical equipment is generally designed with two ports for connecting these two cables of the same specifications to receive the differential signal. In high-frequency environments, differential signals will be significantly affected by parasitic effects, which will cause signal distortion. In order to reduce interference and distortion, it is also necessary to design a differential input circuit. Existing differential input circuits are usually composed of high-precision differential amplifiers, matching networks, and filtering circuits. However, for applications with broadband signal requirements (such as radio frequency communications), the differential input circuit must support a wide frequency range, which makes the design of matching circuits and filters extremely complex, and the final performance may not be ideal. It is difficult to strictly ensure the amplitude and phase symmetry of the two feed signals, thereby reducing the operating accuracy of the electrical equipment. Summary of the Invention

[0004] The present invention provides a cable device with built-in mode conversion and a signal conversion method thereof. These devices address the technical issues of existing differential circuit designs in high-frequency, broadband signal transmission scenarios, such as the complexity of circuit design and the difficulty in maintaining amplitude and phase symmetry between two feed signals, which reduces the operating accuracy of electrical equipment. Furthermore, when interface conversion is required between certain electrical devices, the present invention can directly convert differential signals into single-ended signals.

[0005] A first aspect of the present invention provides a cable device with built-in mode conversion, comprising: an integrated cable structure, a metal component, and a dielectric material structure;

[0006] The integrated cable structure is provided with an accommodating channel, wherein the dielectric material structure and the cable inner core pass through the accommodating channel; the cable inner core is partially embedded in the dielectric material structure;

[0007] The metal component covers the outer wall of the dielectric material structure;

[0008] The metal assembly includes an upper metal edging and a lower metal edging;

[0009] The upper metal edging is provided with a connection port, through which the inner core of the cable extends; the upper metal edging and the lower metal edging are both connected to the integrated cable structure, and the upper metal edging and the lower metal edging are both composed of a gradual structure and a parallel transition structure.

[0010] Furthermore, the gradient structure of the upper metal cladding extends from narrow to wide to the parallel transition structure of the upper metal cladding, and a connection port is provided at the narrow portion of the gradient structure of the upper metal cladding, and the narrow portion of the gradient structure of the upper metal cladding is connected to the integrated cable structure;

[0011] The gradient structure of the lower metal cladding extends from wide to narrow to the parallel transition structure of the lower metal cladding, and the wide portion of the gradient structure of the lower metal cladding is connected to the integrated cable structure.

[0012] Furthermore, the cross section of the gradient structure is formed as a curved gradient extension structure or a planar stepped gradient extension structure.

[0013] Furthermore, the extended ends of the tapered structure of the upper metal cladding and the tapered structure of the lower metal cladding are of the same size.

[0014] Furthermore, the upper metal cladding and the lower metal cladding are respectively arranged on the upper side and the lower side of the outer wall of the dielectric material structure.

[0015] Furthermore, the parallel transition structures of the upper metal cladding and the lower metal cladding are both attached to the outer wall of the dielectric material structure and extend along the axial direction thereof for connecting electrical equipment.

[0016] Furthermore, the parallel transition structure of the upper metal cladding and the parallel transition structure of the lower metal cladding are manufactured with the same size structure.

[0017] Furthermore, the dielectric material structure specifically adopts Taconic RF-35 material with a dielectric constant of 3.5.

[0018] Furthermore, the thickness range of the upper metal edging and the lower metal edging specifically includes 0.6 mm to 1 mm.

[0019] A second aspect of the present invention further provides a signal conversion method for a cable device with built-in mode conversion, comprising:

[0020] When the coaxial cable mode is converted to the differential mode, a first current signal output by the cable core is transmitted to the upper metal cladding, forming an electric field in the dielectric material structure. The electric field is coupled with the magnetic field formed around the cable core to generate a second current signal on the integrated cable structure and transmit the second current signal to the lower metal cladding. Based on the gradient structure of the upper and lower metal claddings, the first and second current signals are converted from an unbalanced mode to a balanced mode, generating a set of differential signals with consistent amplitudes and opposite phases. The differential signals are then transmitted to the electrical device via the parallel transition structure of the upper and lower metal claddings.

[0021] When the differential mode is converted to the coaxial cable mode, the parallel transition structure transmits one of the differential signals to the gradient structure of the upper metal cladding, and the signal flows to the inner core of the cable through the connection port of the upper metal cladding. During the transmission process, the electrical signal in the inner core of the cable will generate an electric field surrounding the conductor. The electric field will form an electromagnetic wave as the signal propagates. The electromagnetic wave will be transmitted to the integrated cable structure through the wrapped dielectric material structure, generating and outputting a single-ended electrical signal.

[0022] It can be seen from the above technical solutions that the present invention has the following advantages:

[0023] The present invention provides a cable device with self-contained mode conversion and a signal conversion method thereof, wherein the cable device includes: an integrated cable structure, a metal component and a dielectric material structure; the integrated cable structure is provided with an accommodating channel, the accommodating channel is for a coaxial cable to pass through; the cable inner core is partially embedded in the dielectric material structure; the metal component covers the outer wall circumference of the dielectric material structure; the metal component includes an upper metal edging and a lower metal edging; the upper metal edging is provided with a connecting port, the connecting port is for the cable inner core to extend out, and the cable inner core is in contact with the dielectric material structure; the upper metal edging and the lower metal edging are both connected to the integrated cable structure, and the upper metal edging and the lower metal edging are both composed of a gradient structure and a parallel transition structure.

[0024] In the present invention, the cable device has the mutual conversion function between coaxial cable mode and differential output mode and has a simple structure. There is no need to design a complex differential input circuit and it is not restricted by the application of high-frequency and ultra-wideband. In the conversion from coaxial cable mode to differential output mode, two current signals with opposite phases are generated based on the structural relationship between the dielectric material structure, the integrated cable structure and the metal components. Then, the two current signals are converted from unbalanced mode to balanced mode to achieve the consistency of the amplitudes of the two current signals, thereby outputting two differential signals with consistent amplitudes and opposite phases. It is directly connected to the electrical equipment at the single cable level, reducing the error and loss of the signal transmitted from the power supply to the cable and then to the electrical equipment, thereby solving the technical problem that in the high-frequency broadband signal transmission scenario, the circuit design of the differential design circuit is complex and it is difficult to maintain the amplitude and phase symmetry of the two feed signals, thereby reducing the working accuracy of the electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 An exploded schematic diagram of an embodiment of a cable device with built-in mode conversion provided by the present application;

[0027] Figure 2 This is an overall schematic diagram of an embodiment of a cable device with built-in mode conversion provided by the present application;

[0028] Figure 3 A schematic structural diagram of an embodiment of a cable device with built-in mode conversion provided by the present application;

[0029] Figure 4 This is an exploded schematic diagram of another embodiment of a cable device with built-in mode conversion provided by the present application;

[0030] Figure 5 This is an overall schematic diagram of another embodiment of a cable device with built-in mode conversion provided by the present application;

[0031] Figure 6 and Figure 7 An example diagram of electrical simulation results of the cable device with built-in mode conversion provided in this application connected to electrical equipment in electromagnetic simulation design software;

[0032] Figure 8A flowchart of the steps of a signal conversion method for a cable device with built-in mode conversion provided by the present application;

[0033] Among them, the figures are marked as: integrated cable structure 1, accommodating channel 11, cable core 2, upper metal edging 3, connecting port 31, gradient structure 32 of upper metal edging, parallel transition structure 33 of upper metal edging, lower metal edging 4, gradient structure 41 of lower metal edging, parallel transition structure 42 of lower metal edging, dielectric material structure 5. DETAILED DESCRIPTION

[0034] An embodiment of the present invention provides a cable device with built-in mode conversion and a signal conversion method thereof, which are used to solve the technical problems that in existing high-frequency broadband signal transmission scenarios, the circuit design of differential design circuits is complex, and it is difficult to maintain the amplitude and phase symmetry of the two-way feed signals, thereby reducing the working accuracy of electrical equipment.

[0035] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] Unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0038] See also Figure 1-Figure 5, an embodiment of a cable device with self-contained mode conversion provided by the present application includes: an integrated cable structure 1, a metal component and a dielectric material structure 5;

[0039] The integrated cable structure 1 is provided with an accommodating channel 11 for the dielectric material structure 5 and the cable inner core 2 to pass through; the cable inner core 2 is partially embedded in the dielectric material structure 5;

[0040] The metal component covers the outer wall of the dielectric material structure 5; the metal component includes an upper metal edging 3 and a lower metal edging 4; the upper metal edging 3 is provided with a connection port 31, and the connection port 31 is for the cable core 2 to extend; the upper metal edging 3 and the lower metal edging 4 are both connected to the integrated cable structure 1, and the upper metal edging 3 and the lower metal edging 4 are both composed of a gradient structure and a parallel transition structure.

[0041] It is understandable that the inner diameter and length of the integrated cable structure 1 can be set according to the specifications of the dielectric material structure 5. When actually feeding, the cable core 2 extends through the reserved connection port 31 in the upper metal cladding 3 to form a stable feeding. Figure 1 The cable core 2 can pass through the connection port 31 of the upper metal cladding 3 in a bending manner, thereby establishing an electrical connection between the cable core 2 and the upper metal cladding 3 .

[0042] It should be noted that the cable device provided by the present invention has the function of converting between coaxial cable mode and differential output mode to adapt to different application scenarios; among them, converting the coaxial cable mode to differential output mode is suitable for application scenarios that require improved signal integrity, anti-interference ability and long-distance transmission; while converting the differential output mode to coaxial cable mode is suitable for industrial automation systems, embedded systems, communication protocol converters, communication interface conversion, and long-distance signal transmission application scenarios. For example, communication interface conversion: when interface conversion is required between some devices, differential signals (such as RS-485, LVDS, etc.) often need to be converted into single-ended electrical signals; long-distance signal transmission: differential signals show good anti-interference ability in long-distance transmission, but in some systems, the receiving end may not have the ability to process differential signals, and in this case, the differential signal needs to be converted into a single-ended electrical signal.

[0043] Among them, the conversion process of converting the coaxial cable mode into the differential mode is as follows: the current signal output by the cable core 2 is transmitted to the upper metal edging 3 through the feeding point formed by the connecting port 31. Since the cable core 2 is a conductor with current, a magnetic field will be formed on its periphery, and an electric field will be formed in the dielectric material structure 5 at the same time; the coupled electric field and magnetic field generate a current signal on the integrated cable structure 1 that is opposite to the current phase of the cable core 2; the current signal generated by the integrated cable structure 1 is transmitted to the lower metal edging 4; in order to achieve the same amplitude of the two current signals, the present invention designs the metal component into a special structure with a gradient slit, that is, the upper metal edging 3 and the lower metal edging 4 are both composed of a gradient structure and a parallel transition structure, thereby converting the current signal from an unbalanced mode to a balanced mode, achieving the same amplitude of the output current of the two metal edgings, thereby generating a stable differential signal, and then converting the coaxial cable mode into a differential output mode.

[0044] Correspondingly, the conversion process from the differential mode to the coaxial cable mode is as follows: the differential signal is transmitted by the parallel transition structure of the upper metal cladding 3 and the lower metal cladding 4, and the two current signals with opposite phases and consistent amplitudes are respectively transmitted to the gradient structure 32 of the upper metal cladding and the gradient structure 41 of the lower metal cladding. The current signal transmitted by the upper metal cladding 3 flows to the cable core 2 through the connector. During the transmission process, the electrical signal of the cable core 2 will generate an electric field surrounding the conductor. This electric field will form an electromagnetic wave as the signal propagates. The electromagnetic wave will be transmitted to the integrated cable structure 1 through the wrapped dielectric material structure 5, thereby realizing the conversion of the differential mode to the coaxial mode and finally outputting a single-ended electrical signal. In addition, the current signal transmitted by the lower metal cladding 4 will also flow to the integrated cable structure 1, but will have almost no effect, that is, it will not affect the conversion of the coaxial mode.

[0045] In a specific embodiment, the gradient structure 32 of the upper metal cladding extends from narrow to wide to the parallel transition structure 33 of the upper metal cladding, the narrow part of the gradient structure 32 of the upper metal cladding is provided with a connection port 31 and the narrow part of the gradient structure 32 of the upper metal cladding is connected to the integrated cable structure 1; the gradient structure 41 of the lower metal cladding extends from wide to narrow to the parallel transition structure 42 of the lower metal cladding, and the wide part of the gradient structure 41 of the lower metal cladding is connected to the integrated cable structure 1; the extended ends of the gradient structure 32 of the upper metal cladding and the gradient structure 41 of the lower metal cladding are the same size, thereby converting the current signal from an unbalanced mode to a balanced differential output mode, thereby forming a set of differential energies with consistent amplitudes and a phase difference of 180°.

[0046] It can be understood that the metal edging of this embodiment adopts a unique gradient slit method to form an upper metal edging 3 and a lower metal edging 4, and the two metal edgings adopt different gradient structures, wherein the gradient structure 32 of the upper metal edging extends from narrow to wide, while the gradient structure 41 of the lower metal edging extends from wide to narrow. Ultimately, the sizes of the two at the end of the gradient structure are the same, thereby balancing the differential signal.

[0047] When the coaxial cable mode is converted into the differential mode, the current signal output by the cable core 2 is transmitted to the narrow part of the gradient structure 32 of the upper metal cladding through the connector 31, and the gradient structure 32 extending from narrow to wide based on the upper metal cladding 3 converts the current signal into an unbalanced mode; correspondingly, the current signal based on the coupling of the electric field and the magnetic field is transmitted by the integrated cable structure 1 to the wide part of the lower metal cladding 4 connected thereto, and the gradient structure 41 extending from wide to narrow based on the lower metal cladding 4 converts the current signal into an unbalanced mode; finally, since the extended ends of the gradient structure 32 of the upper metal cladding and the gradient structure 41 of the lower metal cladding have the same size, the current amplitudes output by the gradient structures of the two metal claddings are successfully consistent, and then a set of differential energies with consistent amplitudes and a phase difference of 180° are output, thereby ensuring the working accuracy of the electrical equipment.

[0048] In a specific embodiment, see Figure 1 and Figure 4 The cross section of the gradient structure is formed by a curved gradient extension structure or a planar stepped gradient extension structure. In the stepped gradient extension structure, both sides of the gradient structure are extended by a plurality of stepped structures of equal size.

[0049] In a specific embodiment, the upper metal cladding 3 and the lower metal cladding 4 are respectively disposed on the upper side and the lower side of the outer wall of the dielectric material structure 5 .

[0050] In a specific embodiment, the parallel transition structures 42 of the upper metal cladding 3 and the lower metal cladding 4 both extend along the axial direction of the outer wall of the dielectric material structure 5 and are used to connect electrical equipment. In the coaxial cable mode, the differential mode is converted to transmit differential energy with the same amplitude and a phase difference of 180 degrees to the electrical equipment. The length of the parallel transition structure does not affect the conversion performance of the gradient structure. In actual applications, the design length of the parallel transition structure can be adjusted according to the required length. At the same time, the present invention directly connects to the electrical equipment at the single cable level, reducing the error and loss of the signal transmitted from the power supply to the cable and then to the electrical equipment, thereby improving the working efficiency of the electrical equipment.

[0051] In a specific embodiment, in order to ensure the stability of the transmitted differential signal, the parallel transition structure 33 of the upper metal cladding and the parallel transition structure 42 of the lower metal cladding are made with the same size structure.

[0052] In a specific embodiment, the dielectric material structure 5 preferably uses Taconic RF-35 material with a dielectric constant of 3.5.

[0053] In a specific embodiment, the thickness ranges of the upper metal edging 3 and the lower metal edging 4 specifically include 0.6 mm to 1 mm. At the same time, the widths and narrowness of the tapered structures of the two metal edgings do not exceed half of the edging perimeter formed by the complete metal component.

[0054] In a specific embodiment, both the metal edging and the integrated cable structure 1 are made of metal materials, such as conventional metal materials like copper. Among them, during manufacturing, an integrated manufacturing process can be adopted, that is, an integrated manufacturing of the parallel transition structure, the tapered structure, and the integrated cable structure 1, without re-welding, saving the manufacturing process time, and only subsequent processing and cutting are required according to actual needs.

[0055] Please refer to Figure 6 and Figure 7 , this embodiment also provides an electrical simulation result example diagram of the connection between the cable device with built-in mode conversion and the electrical equipment in the electromagnetic simulation design software. Among them, the reflection coefficients |S 11 | and |S 22 | both represent the transmission ability from one port to another port in the cable device, specifically the ratio of the reflected power to the output power. The smaller the value, the better the transmission performance of the cable device; |S 11 | represents the transmission ability from the coaxial mode port to the differential mode port, while |S 22 | represents the transmission ability from the differential mode port to the coaxial mode port; |S 12 | represents the loss of cable transmission. The closer the loss is to 0, the lower the loss; as Figure 6 can be seen, the reflection coefficients |S 11 | and |S 22 | of the cable device within the ultra-wide frequency band (1 GHz - 30 GHz frequency band) are both less than -20 dB, and Figure 6 the change of the reflection coefficient |S 12 | within the frequency band in Figure 7 also indicates that the cable device has almost no loss during transmission. As

[0056] A cable device with built-in mode conversion provided by the present invention has the following advantages:

[0057] 1. The cable device provided by the present invention has a built-in conversion function between coaxial cable mode and differential output mode. When the coaxial cable mode is converted to the differential mode, two current signals with opposite phases are generated based on the structural relationship between the dielectric material structure, the integrated cable structure and the metal components. The two current signals are converted from an unbalanced mode to a balanced mode based on the gradual structure of the metal edging, so that the amplitudes of the two current signals are consistent, thereby ensuring the amplitude and phase symmetry of the two feed signals and improving the working accuracy of the electrical equipment. When the differential mode is converted to the coaxial cable mode, the differential signal can be directly converted into a single-ended signal, facilitating interface conversion between electrical equipment.

[0058] 2. The cable device has a simple structure and does not require the use of electrical components to implement circuit design, so it will not be affected by parasitic effects, and at the same time it can reduce the cost of manufacturing related equipment. In addition, the present invention uses simple components such as integrated cable structure, metal components and dielectric material structure to design the cable device to complete the mutual conversion of coaxial signals and differential signals and single-ended transmission functions, without the need to design a complex differential input circuit, and is not subject to the application restrictions of high-frequency and ultra-wide signal bands, solving the problem of small usage bandwidth range of existing electrical equipment.

[0059] 3. The present invention can reduce the error and loss of differential signals transmitted from power supply to cable and then to electrical equipment by realizing signal connection with electrical equipment at the single cable level, thereby improving the signal transmission efficiency of the entire electrical system.

[0060] See also Figure 8 The present invention also provides a signal conversion method for a cable device with built-in mode conversion, comprising:

[0061] Step 101: When the coaxial cable mode is converted to the differential mode, a first current signal output by the cable core is transmitted to the upper metal cladding, forming an electric field in the dielectric material structure; the electric field is coupled with the magnetic field formed around the cable core to generate a second current signal on the integrated cable structure, and the second current signal is transmitted to the lower metal cladding; based on the gradient structure of the upper and lower metal claddings, the first and second current signals are converted from an unbalanced mode to a balanced mode, generating a set of differential signals with consistent amplitudes and opposite phases; and the differential signals are transmitted to the electrical device through the parallel transition structure of the upper and lower metal claddings.

[0062] It can be understood that by extending the cable core from the connection port of the upper metal cladding, an electrical connection is established between the cable core and the upper metal cladding, thereby transmitting the first current signal output by the cable core to the upper metal cladding. The cable core is a energized conductor that contacts the dielectric material structure, allowing the dielectric material structure to form an electric field. Simultaneously, a magnetic field is formed around the cable core, and the resulting electric and magnetic fields couple to generate a current signal on the integrated cable structure that is opposite in phase to the cable core.

[0063] In particular, in order to achieve consistent amplitudes of the two current signals, a special gradient structure is designed in this step to convert the first current signal and the second current signal from an unbalanced mode to a balanced mode, wherein the gradient structure of the upper metal cladding extends from narrow to wide to the parallel transition structure of the upper metal cladding; and the gradient structure of the lower metal cladding extends from wide to narrow to the parallel transition structure of the lower metal cladding.

[0064] Step 102, when the differential mode is converted to the coaxial cable mode, one signal in the differential signal is transmitted to the gradient structure of the upper metal cladding by the parallel transition structure, and one signal flows to the inner core of the cable through the connection port of the upper metal cladding; during the transmission process, the electrical signal in the inner core of the cable will generate an electric field surrounding the conductor, and the electric field will form an electromagnetic wave as the signal propagates. The electromagnetic wave will be transmitted to the integrated cable structure through the wrapped dielectric material structure, generating and outputting a single-ended electrical signal.

[0065] It should be noted that the other signal in the differential signal will be transmitted to the gradient structure of the lower metal cladding, and then the other signal will flow to the integrated cable structure through the lower metal cladding. This signal will not affect the conversion of the coaxial mode.

[0066] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cable device with built-in mode conversion, characterized in that: include: Integrated cable structure, metal components and dielectric material structure; The integrated cable structure is provided with an accommodating channel, wherein the dielectric material structure and the cable inner core pass through the accommodating channel; the cable inner core is partially embedded in the dielectric material structure; The metal component covers the outer wall of the dielectric material structure; The metal assembly includes an upper metal edging and a lower metal edging; The upper metal edging is provided with a connection port, through which the inner core of the cable extends; the upper metal edging and the lower metal edging are both connected to the integrated cable structure, and the upper metal edging and the lower metal edging are both composed of a gradual structure and a parallel transition structure.

2. The cable device according to claim 1, wherein The gradient structure of the upper metal cladding extends from narrow to wide to the parallel transition structure of the upper metal cladding, a connection port is provided at the narrow portion of the gradient structure of the upper metal cladding, and the narrow portion of the gradient structure of the upper metal cladding is connected to the integrated cable structure; The gradient structure of the lower metal cladding extends from wide to narrow to the parallel transition structure of the lower metal cladding, and the wide portion of the gradient structure of the lower metal cladding is connected to the integrated cable structure.

3. The cable device according to claim 2, characterized in that The cross section of the gradual change structure is formed as a curved surface gradual change extension structure or a flat stepped gradual change extension structure.

4. The cable device according to claim 2, characterized in that The extended ends of the tapered structure of the upper metal cladding and the tapered structure of the lower metal cladding are of the same size.

5. The cable device according to claim 1, wherein The upper metal cladding and the lower metal cladding are respectively arranged on the upper side and the lower side of the outer wall of the dielectric material structure.

6. The cable device according to claim 1, characterized in that The parallel transition structures of the upper metal cladding and the lower metal cladding are both attached to the outer wall of the dielectric material structure and extend along the axial direction thereof for connecting electrical equipment.

7. The cable device according to claim 1, characterized in that The parallel transition structure of the upper metal cladding and the parallel transition structure of the lower metal cladding are manufactured with the same size structure.

8. The cable device according to claim 1, wherein The dielectric material structure specifically adopts Taconic RF-35 material with a dielectric constant of 3.

5.

9. The cable device according to claim 1, wherein The thickness of the upper metal cladding and the lower metal cladding specifically ranges from 0.6 mm to 1 mm.

10. A signal conversion method for a cable device with built-in mode conversion, characterized in that: include: When the coaxial cable mode is converted to the differential mode, the first current signal outputted by the cable inner core is transmitted to the upper metal cladding, forming an electric field in the dielectric material structure; The coupling electric field and the magnetic field formed around the inner core of the cable generate a second current signal on the integrated cable structure and transmit the second current signal to the lower metal cladding. Based on the gradient structure of the upper and lower metal claddings, the first and second current signals are converted from an unbalanced mode to a balanced mode to generate a set of differential signals with consistent amplitudes and opposite phases. The differential signals are transmitted to the electrical device through the parallel transition structure of the upper and lower metal claddings. When the differential mode is converted to the coaxial cable mode, the parallel transition structure transmits one of the differential signals to the gradient structure of the upper metal cladding, and the signal flows to the inner core of the cable through the connection port of the upper metal cladding. During the transmission process, the electrical signal in the inner core of the cable will generate an electric field surrounding the conductor. The electric field will form an electromagnetic wave as the signal propagates. The electromagnetic wave will be transmitted to the integrated cable structure through the wrapped dielectric material structure, generating and outputting a single-ended electrical signal.

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