Preparation method of signal transmission line and signal transmission line

Abstract

The invention provides a preparation method of a signal transmission line and the signal transmission line, and the method comprises the steps: forming a metal core through employing a preset superconducting component; the preset superconducting component is formed based on compounds of group III-V elements in a periodic table of elements, metals or compounds corresponding to group IB elements, and / or rare earth metals; the metal core is used for forming a set superconducting environment for signal transmission; the outer side of the metal core is sequentially coated with an insulating layer and a metal layer from inside to outside to form a signal transmission line. The signal transmission line prepared by the method disclosed by the invention has superconductivity and supermagnetism, the power loss during transmission is greatly reduced when signal transmission is realized, and in the preparation method disclosed by the invention, the metal core of the signal transmission line is formed based on the preset superconducting component, so that the metal core not only has relatively high ductility, but also has relatively high conductivity. And the interior of the metal core has relatively high pressure intensity, so that the superconductivity of the signal transmission line is realized.

Description

Technical Field

[0001] The present disclosure relates to the technical field of signal transmission, and particularly to a method for manufacturing a signal transmission line and a signal transmission line. Background Art

[0002] The existing signal transmission lines mainly include microwave coaxial transmission lines, microwave coplanar waveguide transmission lines, microwave microstrip transmission lines, etc.

[0003] However, when the existing signal transmission lines are transmitting signals, due to the resistance in the signal transmission lines, when transmitting high-power microwave signals, the loss is very serious, and heat is generated, resulting in failure; or the existing signal transmission lines need to be implemented on a substrate or a circuit board, and the introduction of the substrate or the circuit board will cause more power transmission loss, which cannot meet the requirements of high-quality signal transmission. Summary of the Invention

[0004] The technical problem to be solved by the present disclosure is to overcome the defect in the prior art that the requirements of high-quality signal transmission cannot be met, and to provide a method for manufacturing a signal transmission line and a signal transmission line.

[0005] The present disclosure solves the above technical problem through the following technical solutions:

[0006] According to a first aspect of the present disclosure, there is provided a method for manufacturing a signal transmission line, the manufacturing method including:

[0007] Forming a metal core with a preset superconducting composition;

[0008] Wherein, the preset superconducting composition is formed based on compounds of group III-V elements in the periodic table of elements, and metals and / or rare earth metals corresponding to elements in group IB (copper subgroup); or compounds and / or rare earth metals corresponding to elements in group IB;

[0009] The metal core is used to form a set superconducting environment for signal transmission;

[0010] Coating and arranging an insulating layer and a metal layer on the outer side of the metal core in sequence from inside to outside to form the signal transmission line.

[0011] Preferably, the metal corresponding to the group IB element is any one of gold, silver, and copper.

[0012] Preferably, the rare earth metal corresponds to any one of polonium, niobium, and lutetium.

[0013] Preferably, the compound corresponding to the group IB element is a nitride or oxide of the group IB;

[0014] Or,

[0015] The ternary compound is any one of aluminum gallium arsenide (AlGaAs), indium gallium arsenide (InGaAs), and indium gallium arsenide phosphide (InGaAsP).

[0016] Preferably, the step of sequentially coating an insulating layer and a metal layer from the inside out on the outer side of the metal core to form the signal transmission line includes:

[0017] Under preset preparation parameters, the metal core and the insulating sleeve provided on the outer surface of the metal core are processed to form a first transmission line;

[0018] One end or both ends of the first transmission line are subjected to drawing treatment to form a second transmission line;

[0019] A metal layer is coated on the outer surface of the second transmission line to form the signal transmission line.

[0020] Preferably, the preset preparation parameters correspond to at least one of a preset air pressure, a preset temperature, and a preset rotation speed.

[0021] Preferably, the preset air pressure is greater than or equal to 10 standard atmospheres;

[0022] And / or,

[0023] The preset temperature is greater than or equal to 2500 degrees Celsius;

[0024] And / or,

[0025] The preset rotation speed is greater than or equal to 100 revolutions per second.

[0026] Preferably, the step of subjecting one end or both ends of the first transmission line to drawing treatment to form a second transmission line includes:

[0027] The one end or both ends of the first transmission line are subjected to drawing treatment at a preset drawing speed;

[0028] The drawing diameter of the first transmission line during the drawing process is obtained, and when the drawing diameter meets a preset range, the drawing is stopped to form the second transmission line;

[0029] Wherein, the step of coating a metal on the outer surface of the second transmission line to form the metal layer to form the signal transmission line further includes:

[0030] A metal layer is coated on the outer surface of the second transmission line, and after cooling and solidifying, the signal transmission line is formed.

[0031] Preferably, the material of the insulating sleeve is quartz material;

[0032] And / or,

[0033] During the preparation process, the cross-section corresponding to the outer coating of the metal core with the insulating layer is circular.

[0034] According to the second aspect of the present disclosure, a signal transmission line is provided, which is formed by the preparation method of the signal transmission line described in the first aspect of the present disclosure.

[0035] On the basis of conforming to the common knowledge in the art, the above preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present disclosure.

[0036] The positive and progressive effects of the present disclosure are as follows:

[0037] In the preparation method of the signal transmission line provided by the present disclosure, by forming the metal core of the signal transmission line based on the compounds of group III-V elements in the periodic table of elements and the metals or compounds corresponding to group IB elements, the formed metal core has high ductility, providing a basis for the subsequent wire drawing process; and because there are strong polar electric fields and force fields inside the compounds of group III-V elements, the internal pressure of the formed metal core is high; that is, when the signal transmission line prepared by the preparation method of the signal transmission line provided by the present disclosure realizes signal transmission, the power loss during transmission is greatly reduced.

[0038] Furthermore, since the insulating layer material is quartz material, and quartz shrinks greatly when cooled, a high-pressure environment is provided for the metal core, further reducing the power loss during transmission and improving the superconductivity of the signal transmission line, thereby meeting the requirements for high-quality signal transmission. Description of the Drawings

[0039] Figure 1 It is a schematic structural diagram of the cross-section of a microwave coaxial transmission line in the prior art;

[0040] Figure 2 It is a schematic structural diagram of the cross-section of a microwave coplanar waveguide transmission line in the prior art;

[0041] Figure 3 It is a schematic structural diagram of the cross-section of a microwave microstrip transmission line in the prior art;

[0042] Figure 4 It is a schematic flow diagram of the preparation method of the signal transmission line in Embodiment 1;

[0043] Figure 5 It is a schematic flow diagram of forming the signal transmission line in Embodiment 1;

[0044] Figure 6 It is a schematic flow diagram of forming the second transmission line in Embodiment 1;

[0045] Figure 7Schematic structural diagram of the preparation method of the signal transmission line in Embodiment 1. Detailed implementation manners

[0046] The present disclosure will be further described below by way of embodiments, but the present disclosure is not limited to the scope of the embodiments thereby.

[0047] As Figure 1 shown, Figure 1 As shown in the schematic structural diagram of the cross-section of the microwave coaxial transmission line, the microwave coaxial transmission line is usually composed of a metal core such as copper, wrapped with an insulating material on the outside, and then covered with a layer of metal such as copper on the outside of the insulating material. The metal core in the middle transmits microwave signals and forms a coaxial transmission line structure with the insulating layer on the outside; as Figure 2 and Figure 3 shown, Figure 2 As shown in the schematic structural diagram of the cross-section of the microwave coplanar waveguide transmission line, Figure 3 As shown in the schematic structural diagram of the cross-section of the microwave microstrip transmission line, the microwave coplanar waveguide transmission line and the microwave microstrip transmission line are signal transmission lines realized on a circuit board or a semiconductor substrate.

[0048] Due to the existence of resistance in the metal core in the middle of the microwave coaxial transmission line, when transmitting high-power microwave signals, the loss is very serious, and it will generate heat, resulting in failure, and this transmission loss becomes more and more serious with the increase of frequency; the microwave coplanar waveguide transmission line and the microwave microstrip transmission line need to be realized on a substrate or a circuit board, and the introduction of the substrate or the circuit board will cause more power transmission loss.

[0049] A superconductor refers to a conductor whose resistivity is close to 0 under certain temperature and pressure conditions, that is, a conductor that achieves lossless current transmission. This condition is usually at least one of low temperature and high pressure.

[0050] Since a non-decaying surface current will be generated on the surface of the superconductor, and this surface superconducting current will generate diamagnetism, superconductors usually also exhibit supermagnetism at the same time. The superconducting properties have important application prospects in the field of microwave transmission. If room-temperature and atmospheric-pressure superconductivity is achieved, then lossless transmission of microwave signals can be realized using a superconducting coaxial transmission line, and the loss and heating problems of the copper-core metal coaxial transmission line in the background art can be overcome, and the problem of transmitting high-power microwave signals can be well solved. Moreover, the reduction of the transmission resistance also means that the noise figure of the low-noise amplifier circuit is reduced, and the overall noise figure will approach 0, and the sensitivity will be significantly improved.

[0051] However, the current preparation technology of superconducting materials is not yet mature. For example, it is difficult to achieve room temperature and atmospheric pressure simultaneously in terms of materials; the realized superconducting materials are usually semiconductors formed by more than 3 elements and cannot be extended like metals such as copper to make a metal core.

[0052] Based on the above problems, the present disclosure designs a preparation method of a signal transmission line and a signal transmission line, which are specifically as follows:

[0053] Example 1

[0054] As Figure 4 shown, in an embodiment of the present disclosure, a preparation method of a signal transmission line is provided, wherein the preparation method includes:

[0055] S11: A metal core is formed by using a preset superconducting component, wherein the preset superconducting component is formed based on a compound of elements in Group III-V of the periodic table, and a metal corresponding to Group IB elements and / or a rare earth metal; or a compound corresponding to Group IB elements and / or a rare earth metal.

[0056] In a first specific implementation manner, the preset superconducting component can be formed by a compound of elements in Group III-V and a metal corresponding to Group IB elements.

[0057] In a second specific implementation manner, the preset superconducting component can be formed by a compound of elements in Group III-V and a compound corresponding to Group IB elements.

[0058] In a third specific implementation manner, the preset superconducting component can be formed by a compound of elements in Group III-V, a metal corresponding to Group IB elements genus and rare earth metal form formed.

[0059] In a fourth specific implementation manner, the preset superconducting component can be formed by a compound of elements in Group III-V, a compound corresponding to Group IB elements, and a rare earth metal. S12: The metal core is used to form a set superconducting environment for signal transmission.

[0060] S13: An insulating layer and a metal layer are sequentially coated outside the metal core from the inside to the outside to form a signal transmission line.

[0061] In a specific implementation manner of the present disclosure, the metal corresponding to Group IB elements is gold, silver, copper, etc., the rare earth metals are polonium, niobium, lutetium, etc., and the proportion of the metal or compound corresponding to Group IB elements in the preset superconducting component is 10% to 30%, so that the signal transmission line prepared by this preparation method has high ductility and is convenient for wire drawing and forming.

[0062] In a specific implementation manner of the present disclosure, the compound corresponding to Group IB elements is a nitride or oxide of Group IB; or, the compound of elements in Group III-V is any one of aluminum gallium arsenide (AlGaAs), indium gallium arsenide (InGaAs), and indium gallium arsenide phosphide (InGaAsP).

[0063] In a specific implementation manner, when the compound of elements in Group III-V is Al y Ga z As aWhen this is the case, the typical ratio is y = 0.3 - 0.7, z = 0.7 - 0.3, and y + z = a. For example, when a = 1, Al 0.3 Ga 0.7 As, or Al 0.3 Ga 0.7 As are both applicable.

[0064] In the embodiments of the present disclosure, the compound corresponding to Group IB elements is copper nitride or copper oxide. When the compound corresponding to Group IB elements is copper nitride Cu x N b or Cu x O b When this is the case, the typical ratio of Cu and N or O is: x = 0.2 - 0.4, b = 0.5 - 0.7. For example: Cu 0.3 N 0.7 or Cu 0.3 O 0.7 .

[0065] In the embodiments of the present disclosure, due to lattice mismatch, the compound of Group III-V elements generates a strong internal electric field and a strong internal stress field. The microenvironment formed by this compound of Group III-V elements is equivalent to the high-pressure environment required for high-temperature superconducting materials, enabling a relatively high pressure inside the formed metal core, providing the pressure condition for realizing room-temperature high-pressure superconducting characteristics; Group IB elements such as copper Cu are equivalent to being in a high-pressure environment in this kind of environment. If a certain external pressure is applied further, the strong polar electric field and force field inside the material are further strengthened, reaching the critical pressure required for a Group IB element such as a copper Cu compound to achieve superconductivity. Therefore, this compound can exhibit room-temperature superconducting characteristics.

[0066] For the superconducting material proposed by the present disclosure, the compound of Group III-V elements therein, typically gallium aluminum nitrogen arsenide AlGaAsN, is in single-crystal form in the preform. The typical growth method is to grow layer by layer on an extremely thin (with a diameter within 10 microns) single-crystal metal wire (such as copper, gold, aluminum) by metalorganic chemical vapor deposition (MOCVD for example) or molecular beam epitaxy (MBE for example) to form the preform composed of the five elements of copper, gallium, aluminum, nitrogen, and arsenic proposed by the present disclosure, which is in single-crystal form, ensuring the current density passing through and having practicality.

[0067] As Figure 5 shown, the steps of sequentially coating and arranging an insulating layer and a metal layer outside the metal core to form a signal transmission line include:

[0068] S21: Under preset preparation parameters, process the metal core and the insulating sleeve provided on the outer surface of the metal core to form a first transmission line.

[0069] S22: Perform traction wire drawing treatment on one or both ends of the first transmission line to form a second transmission line.

[0070] S23: Coat the outer surface of the second transmission line with metal to form a metal layer, thereby forming a signal transmission line.

[0071] Wherein, the preset preparation parameters correspond to at least one of a preset air pressure, a preset temperature, and a preset rotation speed.

[0072] In a specific embodiment, the preset air pressure is greater than or equal to 10 standard atmospheres; and / or, the preset temperature is greater than or equal to 2500 degrees Celsius; and / or, the preset rotation speed is greater than or equal to 100 revolutions per second. By preparing the signal transmission line under the preset preparation parameters, the prepared signal transmission line has superconductivity, so as to greatly reduce the power loss during signal transmission.

[0073] Such as Figure 6 , in the embodiments of the present disclosure, the step of performing traction drawing on one end or both ends of the first transmission line to form the second transmission line includes:

[0074] S31: Perform traction drawing on one end or both ends of the first transmission line at a preset traction speed.

[0075] In a specific embodiment, the preset traction speed is 10 m / s.

[0076] S32: Obtain the drawing diameter of the first transmission line during the drawing process, and stop drawing until the drawing diameter meets the preset range, so as to form the second transmission line.

[0077] Wherein, the step of coating the outer surface of the second transmission line with metal to form a metal layer to form a signal transmission line further includes: coating the outer surface of the second transmission line with metal to form a metal layer, and waiting for it to cool and solidify to form a signal transmission line.

[0078] In a specific embodiment, the material of the metal layer coated on the outer surface of the second transmission line is copper, gold, silver, etc. By coating the metal layer on the outer surface of the second transmission line, a grounding loop is formed outside the insulating layer, improving the reliability of the signal transmission line.

[0079] In the embodiments of the present disclosure, the material of the insulating sleeve is quartz material; and / or, during the preparation process, the cross-section corresponding to the outer coating of the insulating layer on the metal core is circular. Since the insulating sleeve prepared from quartz material shrinks more after cooling, it can ensure that the superconducting coaxial core is also in a high-pressure working state at room temperature, thus ensuring the superconducting characteristics.

[0080] Such as Figure 7 As shown below, a specific embodiment is used to illustrate the method for preparing the signal transmission line in the present disclosure:

[0081] First, press the group III-V element compound and the metal or compound corresponding to the group IB element into a preform rod and insert it into a quartz sleeve.

[0082] In a high-temperature and high-pressure furnace, both the quartz sleeve and the superconducting core preform rod slowly melt. Among them, a typical high-temperature environment is 2500 °C, and a typical high-pressure environment is 10 standard atmospheres.

[0083] The quartz sleeve and the preform rod rotate at a high speed in the high-temperature and high-pressure furnace. Among them, a typical rotation speed is 100 revolutions per second, so that the preform rod and the quartz sleeve are integrated in the high-temperature and high-pressure environment and still maintain a circular cross-section.

[0084] Draw wires on one side or both sides of the quartz sleeve and the preform rod. Among them, a typical wire-drawing speed is 10 m / s.

[0085] After diameter monitoring of the drawn transmission line, coat it with an outer layer of metal.

[0086] After cooling and solidification, a signal transmission line can be obtained, and the signal transmission line is stored and used.

[0087] Since the external insulating medium uses a high-temperature and high-pressure insulating material and the internal coaxial core is a room-temperature high-pressure superconducting material; during use, the quartz still tightly wraps the superconducting core. Since the quartz sleeve shrinks more after cooling, it can ensure that the superconducting coaxial core (formed by the preform rod and the quartz sleeve) is also in a high-pressure working state at room temperature, thereby ensuring superconducting-related characteristics.

[0088] The quartz sleeve made of quartz material has good heat dissipation, and after the quartz sleeve shrinks after cooling, it forms a relatively large pressure on the metal core; when the quartz sleeve and the preform rod shrink and when the diameter shrinks to a certain size, such as below 500 μm, the quartz sleeve can achieve a certain toughness, such as being able to bend at a certain angle without breaking, achieving a bending effect similar to that of a quartz optical fiber, and further improving the application convenience of the signal transmission line.

[0089] In the method for preparing the signal transmission line provided by the present disclosure, by forming the metal core of the signal transmission line based on the group III-V element compound in the periodic table and the metal or compound corresponding to the group IB element, the formed metal core has high ductility, providing a basis for the subsequent wire-drawing process; and because there is a strong polar electric field and force field inside the group III-V element compound, there is a relatively high pressure inside the formed metal core; that is, when the signal transmission line prepared by the method for preparing the signal transmission line provided by the present disclosure realizes signal transmission, the power loss during transmission is greatly reduced.

[0090] Furthermore, since the insulating layer material is quartz, and quartz shrinks greatly when cooled, it provides a high-voltage environment for the metal core, further reducing the power loss during transmission and improving the superconductivity of the signal transmission line.

[0091] Embodiment 2

[0092] In an embodiment of the present disclosure, a signal transmission line is provided, which is formed by the preparation method of the signal transmission line in Embodiment 1 of the present disclosure.

[0093] For the signal transmission line prepared by the preparation method of the signal transmission line provided by the present disclosure, in which the metal core of the signal transmission line is formed by a compound of group III-V elements in the periodic table of elements and a metal or compound corresponding to group IB elements, the formed metal core has high ductility, providing a basis for the subsequent wire drawing process; and since there is a strong polar electric field and force field inside the compound of group III-V elements, the formed metal core has a high internal pressure; that is, when the signal transmission line prepared by the preparation method of the signal transmission line provided by the present disclosure realizes signal transmission, the power loss during transmission is greatly reduced. Furthermore, since the insulating layer material is quartz, and quartz shrinks greatly when cooled, it provides a high-voltage environment for the metal core, further reducing the power loss during transmission and improving the superconductivity of the signal transmission line.

[0094] Although the specific embodiments of the present disclosure have been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present disclosure is defined by the appended claims. Without departing from the principles and essence of the present disclosure, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present disclosure.

Claims

1. A method for preparing a signal transmission line, characterized in that, The preparation method includes: Forming a metal core using a preset superconducting component; Wherein, the preset superconducting component is formed based on a compound of group III-V elements in the periodic table, and a metal corresponding to group IB elements and / or a rare earth metal; or a compound corresponding to group IB elements and / or a rare earth metal; The metal core is used to form a set superconducting environment for signal transmission; An insulating layer and a metal layer are sequentially coated outside the metal core from the inside out to form the signal transmission line.

2. The preparation method of the signal transmission line according to claim 1, wherein, The metal corresponding to the group IB element is any one of gold, silver, and copper.

3. The manufacturing method of the signal transmission line according to claim 1, wherein The rare earth metal corresponds to any one of polonium, niobium, and lutetium.

4. The method for preparing a signal transmission line according to claim 1, wherein The compound corresponding to the group IB element is a nitride or oxide of group IB; Or, The group III-V compound is any one of aluminum gallium arsenide (AlGaAs), indium gallium arsenide (InGaAs), and indium gallium arsenide phosphide (InGaAsP).

5. The method for preparing a signal transmission line according to claim 1, characterized in that, The step of sequentially coating an insulating layer and a metal layer outside the metal core from the inside out to form the signal transmission line includes: Under preset preparation parameters, processing the metal core and an insulating sleeve disposed on the outer surface of the metal core to form a first transmission line; Performing traction wire drawing on one or both ends of the first transmission line to form a second transmission line; Coating a metal on the outer surface of the second transmission line to form the metal layer to form the signal transmission line.

6. The method for preparing a signal transmission line according to claim 5, wherein The preset preparation parameters correspond to at least one of a preset air pressure, a preset temperature, and a preset rotation speed.

7. The method for preparing a signal transmission line according to claim 6, wherein The preset air pressure is greater than or equal to 10 standard atmospheres; And / or, The preset temperature is greater than or equal to 2500 degrees Celsius; And / or, The preset rotation speed is greater than or equal to 100 revolutions per second.

8. The method for preparing a signal transmission line according to claim 5, wherein The step of performing traction wire drawing on one or both ends of the first transmission line to form a second transmission line includes: Performing traction wire drawing on one or both ends of the first transmission line at a preset traction speed; Obtaining the wire drawing diameter of the first transmission line during the wire drawing process until the wire drawing diameter meets a preset range, and stopping the wire drawing to form the second transmission line; Wherein, the step of coating a metal on the outer surface of the second transmission line to form the metal layer to form the signal transmission line further includes: Coating a metal on the outer surface of the second transmission line to form the metal layer, and waiting for cooling and solidification to form the signal transmission line.

9. The method for preparing a signal transmission line according to claim 5, wherein The material of the insulating sleeve is quartz material; And / or, During the preparation process, the cross-section corresponding to the coating of the insulating layer outside the metal core is circular.

10. A signal transmission line, characterized in that, The signal transmission line is prepared by the preparation method of the signal transmission line according to any one of claims 1-9.

Images