Radio frequency coaxial cable processing method and radio frequency coaxial cable

Abstract

The invention relates to the technical field of cable processing, and provides a radio frequency coaxial cable processing method and a radio frequency coaxial cable. And carrying out multiple times of thermal cycle treatment on the radio frequency coaxial cable. And stopping stretching the radio frequency coaxial cable. And bending the radio frequency coaxial cable. The invention has the effect of improving the phase stability of the radio frequency coaxial cable.

Description

Technical Field

[0001] This application relates to the field of cable processing technology, and proposes a method for processing radio frequency coaxial cables and a radio frequency coaxial cable. Background Technology

[0002] In today's rapidly developing communication technology, radio frequency (RF) coaxial cables, as a key component for signal transmission, play a crucial role in the stable operation of the entire communication system. With the ever-increasing demands for signal transmission quality and stability in communication systems, the phase stability of RF coaxial cables has become one of the important indicators for evaluating their performance. Stable phase performance can effectively reduce signal distortion, improve the anti-interference capability of the communication system, and thus ensure the accuracy and reliability of information transmission.

[0003] To address the phase stability issue of RF coaxial cables, related technologies typically employ the use of dielectric materials with low phase coefficients, such as "phase-stable" PTFE, to passively suppress phase drift. This approach addresses the issue from the perspective of material properties, reducing phase drift caused by external factors by lowering the material's inherent phase change coefficient. Furthermore, to compensate for phase drift caused by temperature changes, complex digital circuits or software algorithms are often used for real-time calibration at the system level. However, these existing technologies have significant drawbacks. Traditional material-dependent methods are costly, and due to the inherent physical properties of the materials, performance improvements have a physical limit, failing to meet the increasingly stringent requirements for phase stability. After bending and vibration, the relative positions of the internal conductors and shielding layers of the cable undergo minute but irreversible changes, resulting in a "phase memory effect." This causes a phase shift that cannot be restored to its initial state, leading to insufficient mechanical stability of the cable.

[0004] The aforementioned technologies suffer from the drawback of low phase stability in radio frequency coaxial cables. Summary of the Invention

[0005] In order to improve the phase stability of radio frequency coaxial cables, this application provides a radio frequency coaxial cable processing method and a radio frequency coaxial cable.

[0006] On the one hand, the radio frequency coaxial cable processing method provided in this application adopts the following technical solution: A method for processing radio frequency coaxial cables includes: S1, stretched radio frequency coaxial cable; S2. Perform multiple thermal cycling treatments on the radio frequency coaxial cable; S3. Stop stretching the radio frequency coaxial cable; S4. Bend the radio frequency coaxial cable.

[0007] By adopting the above technical solutions, the phase instability caused by manufacturing stress and temperature changes is solved by stretching the RF coaxial cable and performing multiple thermal cycles. Furthermore, the phase instability caused by mechanical bending is solved by performing multiple bending processes on the RF coaxial cable. This allows the internal structure of the processed RF coaxial cable to be adjusted to a low-stress, high-stability equilibrium state, thereby comprehensively improving the phase stability of the RF coaxial cable.

[0008] Optionally, step S2 includes: S21. Raise the temperature of the radio frequency coaxial cable from room temperature to a first target temperature; S22. The radio frequency coaxial cable is kept at the first target temperature for a third time period. S23. Cool the radio frequency coaxial cable from the first target temperature to the second target temperature; S24. The radio frequency coaxial cable is kept at the second target temperature for a fourth time period. S25. Repeat steps S21, S22, S23 and S24 multiple times.

[0009] By adopting the above technical solution, the "heating-holding-cooling-holding" cycle can more effectively promote the movement and rearrangement of molecular chains within the RF coaxial cable material. The high-temperature stage (first target temperature) mainly accelerates stress release, while the low-temperature stage (second target temperature) helps to "solidify" the new stable structure and prevent stress rebound. Repeatedly executing steps S21, S22, S23, and S24 ensures that the stress in the RF coaxial cable is fully released in different temperature ranges. This wide-temperature-range cyclic treatment is particularly effective for materials like PTFE that exhibit phase change behavior at specific temperature points (such as near room temperature).

[0010] Optionally, in step S25, the number of times steps S21, S22, S23 and S24 are executed is between 3 and 5.

[0011] By adopting the above technical solution, 3-5 cycles achieve the best balance between effectiveness and cost. Too few cycles result in incomplete thermal cycling, while too many cycles lead to poor economic benefits and high processing costs.

[0012] Optionally, in step S1, after stretching is completed, the RF coaxial cable is kept in the stretched state for a first time period; in step S2, the RF coaxial cable is placed in the stretched state for a second time period, and the RF coaxial cable is subjected to multiple thermal cycling treatments during the second time period.

[0013] By adopting the above technical solution, holding the RF coaxial cable in a stretched state for a first period of time ensures that the RF coaxial cable achieves good stress relief while also maintaining economic efficiency and high production efficiency. Performing thermal cycling treatment on the RF coaxial cable in the second period ensures that the stress in the RF coaxial cable is fully released.

[0014] Optionally, in steps S1 and S2, the elongation of the radio frequency coaxial cable in the stretched state is 0.5%-2% of the total length of the radio frequency coaxial cable.

[0015] By employing the above technical solutions, insufficient elongation results in inadequate axial stress, failing to effectively straighten the inner conductor within the RF coaxial cable and eliminate gaps between layers, leading to poor stress release. Excessive elongation may cause the conductors (especially the inner conductor) to enter the plastic deformation zone or damage the outer conductor structure, permanently impairing the cable's mechanical and electrical properties (such as characteristic impedance and return loss). An elongation range of 0.5%-2% represents a safe "elastic deformation" operating range. This range provides sufficient prestress for stabilization while avoiding irreversible damage to the RF coaxial cable, ensuring the reliability and yield of the final product.

[0016] Optionally, in step S4, the bending radius of the radio frequency coaxial cable is not less than the minimum permissible bending radius of the radio frequency coaxial cable.

[0017] By adopting the above technical solution, the bending radius of the radio frequency coaxial cable is limited to not less than the minimum allowable bending radius, which can prevent physical damage to the radio frequency coaxial cable during processing, such as outer conductor wrinkling, inner conductor breakage, or drastic changes in characteristic impedance.

[0018] Optionally, in step S4, the direction of bending of the radio frequency coaxial cable alternates.

[0019] By adopting the above technical solution, the alternating bending direction can ensure that the bending stress of the RF coaxial cable in all directions is released, and the residual stress after bending and shaping is eliminated more comprehensively, so that the RF coaxial cable exhibits good phase stability when bent in any direction.

[0020] Optionally, the process may include the following after step S4: S5. Perform electrical performance testing on the radio frequency coaxial cable.

[0021] By adopting the above technical solution and adding a testing step after processing, it is ensured that every processed RF coaxial cable has undergone performance testing. This effectively eliminates individual products that fail to meet processing standards due to batch differences in materials, occasional equipment fluctuations, or other reasons, guaranteeing a high degree of consistency in the performance of the final product and ensuring compliance with standards.

[0022] Optionally, step S5 includes: S51. Detect the phase change of the radio frequency coaxial cable at different temperatures; S52. Compare the phase change of the radio frequency coaxial cable with a preset threshold, and screen the radio frequency coaxial cable according to the comparison result.

[0023] By adopting the above technical solution, the phase change of the radio frequency coaxial cable is detected at different temperatures, the phase change is compared with a preset threshold, and the radio frequency coaxial cable is screened according to the comparison result, so that products that meet the requirements can be screened out, thus ensuring the quality of the final product.

[0024] On the other hand, this application embodiment also provides a radio frequency coaxial cable using the following technical solution: A radio frequency coaxial cable is manufactured using a radio frequency coaxial cable processing method.

[0025] By adopting the above technical solution, the internal stress of the radio frequency coaxial cable treated by the radio frequency coaxial cable processing method is systematically eliminated, resulting in the radio frequency coaxial cable having a lower phase coefficient and better phase bending stability.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The phase instability caused by manufacturing stress and temperature changes was solved by stretching the RF coaxial cable and performing multiple thermal cycles. The phase instability caused by mechanical bending was solved by performing multiple bending processes on the RF coaxial cable. This adjusted the internal structure of the processed RF coaxial cable to a low-stress, high-stability equilibrium state, thereby comprehensively improving the phase stability of the RF coaxial cable. 2. The "heating-holding-cooling-holding" cycle can more effectively promote the movement and rearrangement of molecular chains within the RF coaxial cable material. The high-temperature stage (first target temperature) mainly accelerates stress release, while the low-temperature stage (second target temperature) helps to "solidify" the new stable structure and prevent stress rebound. Repeatedly executing steps S31, S32, S33, and S34 ensures that the stress in the RF coaxial cable is fully released in different temperature ranges. This wide-temperature-range cyclic treatment is particularly effective for materials like PTFE that exhibit phase change behavior at specific temperature points (such as near room temperature). 3. Insufficient elongation results in insufficient applied axial stress, failing to effectively straighten the inner conductor of the RF coaxial cable, eliminate gaps between layers, and achieve poor stress relief. Excessive elongation may cause the conductors (especially the inner conductor) to enter the plastic deformation zone or damage the outer conductor structure, permanently impairing the mechanical and electrical properties of the RF coaxial cable (such as characteristic impedance and return loss). An elongation range of 0.5%-2% is a safe "elastic deformation" operating range, providing sufficient prestress for stabilization while avoiding irreversible damage to the RF coaxial cable, ensuring the reliability and pass rate of the final product. 4. The internal stress of the radio frequency coaxial cable treated with the radio frequency coaxial cable processing method is systematically eliminated, resulting in a lower phase coefficient and better phase bending stability of the radio frequency coaxial cable. Attached Figure Description

[0027] Figure 1 This is a flowchart of a radio frequency coaxial cable processing method according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a radio frequency coaxial cable according to an embodiment of this application.

[0028] Explanation of reference numerals in the attached diagram: 10, radio frequency coaxial cable; 11, inner conductor; 12, dielectric layer; 13, outer conductor. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0030] This application discloses a method for processing radio frequency coaxial cables. Figure 1 This is a flowchart illustrating a radio frequency coaxial cable processing method according to an embodiment of this application. (Refer to...) Figure 1 The radio frequency coaxial cable processing method includes: S1, 10-inch stretchable radio frequency coaxial cable.

[0031] S2. Perform multiple thermal cycling treatments on the radio frequency coaxial cable 10.

[0032] S3. Stop stretching the radio frequency coaxial cable 10.

[0033] S4. Bend the radio frequency coaxial cable 10.

[0034] S5. Perform electrical performance testing on the radio frequency coaxial cable 10.

[0035] The steps described above are explained in detail below.

[0036] In step S1, the RF coaxial cable 10 is stretched. After stretching, the RF coaxial cable 10 is held in the stretched state for a first time period. Typically, a tensile testing machine is used to slowly stretch the RF coaxial cable 10. This tensile testing machine can accurately apply and measure the tensile force at both ends of the RF coaxial cable 10. When stretching the RF coaxial cable 10, the tensile testing machine uses a dedicated auxiliary clamp to fix both ends of the RF coaxial cable. This auxiliary clamp can firmly hold the RF coaxial cable 10 while preventing damage to the RF coaxial cable 10 itself.

[0037] The stretching rate of the radio frequency coaxial cable 10 can be 10 mm / min to 25 mm / min. During the manufacturing, transportation, and winding process of the radio frequency coaxial cable 10, uneven residual stress will be generated in the inner conductor 11, the dielectric layer 12, and the outer conductor 13. By applying a controllable axial tensile stress to the radio frequency coaxial cable 10, these uneven internal stresses can be forcibly released and redistributed, so that the internal structure of the entire radio frequency coaxial cable 10 tends to a uniform and stable equilibrium state.

[0038] Furthermore, the slow and controllable stretching rate avoids impact loads on the RF coaxial cable 10, ensuring that the tensile force is applied quasi-statically. This allows the various components within the RF coaxial cable 10 (the inner conductor 11, the dielectric layer 12, and the outer conductor 13) sufficient time to deform and release stress in a coordinated manner. During the first time period, the elongation of the RF coaxial cable 10 is typically 0.5%-2% of its length, and the first time period during which the RF coaxial cable 10 remains in the stretched state is 10-30 minutes.

[0039] In step S2, the radio frequency coaxial cable 10 is subjected to multiple thermal cycling treatments.

[0040] Step S2 includes: S21. Raise the temperature of the radio frequency coaxial cable 10 from room temperature to the first target temperature.

[0041] S22, keep the radio frequency coaxial cable 10 at the first target temperature for a second time period.

[0042] S23. The radio frequency coaxial cable 10 is cooled from the first target temperature to the second target temperature.

[0043] S24. The radio frequency coaxial cable 10 is kept at the second target temperature for a third time period.

[0044] S25. Repeat steps S21, S22, S23 and S24 multiple times.

[0045] In steps S21, S22, S23, S24, and S25, the RF coaxial cable 10 is placed in the stretched state for a second time period, and the RF coaxial cable 10 undergoes multiple thermal cycling treatments during this second time period, which can be 5-15 hours. A high-low temperature test chamber is typically used to change the temperature of the RF coaxial cable 10. This test chamber integrates a precision heating system (usually resistance wire heating), a temperature sensor, a temperature control system, and an air circulation system. The temperature control system controls the heating system and the temperature sensor to ensure precise control of the heating and cooling rates, the first target temperature, and the second target temperature of the RF coaxial cable 10. The control circulation system can be a convection fan, which forces air convection to ensure uniform temperature in every corner of the high-low temperature test chamber, allowing the RF coaxial cable 10 to be heated evenly throughout.

[0046] The first target temperature can be 85°C, the second target temperature can be -55°C, the heating rate of the RF coaxial cable 10 from room temperature to the first target temperature can be 1-5°C / min, and the cooling rate of the RF coaxial cable 10 from the first target temperature to the second target temperature can be 1-5°C / min.

[0047] In step S22, the third time period for which the radio frequency coaxial cable 10 is kept at the first target temperature can be 30 minutes. The third time period of 30 minutes allows the interior of the radio frequency coaxial cable 10 to fully reach 85°C. At 85°C, the molecular chains of the polymer material inside the radio frequency coaxial cable 10 can obtain sufficient energy to begin rearrangement and relaxation, thereby releasing internal stress.

[0048] In step S24, the fourth time period for which the radio frequency coaxial cable 10 is kept at the second target temperature can be 30 minutes. The fourth time period of 30 minutes allows the internal temperature of the radio frequency coaxial cable 10 to completely reach -55°C, and the radio frequency coaxial cable 10 shrinks and locks into a new, stable structural state at low temperature.

[0049] In step S25, steps S21, S22, S23, and S24 are executed 3-5 times. Experiments show that the improvement in phase stability of the RF coaxial cable 10 typically reaches a peak or plateau after 3-5 thermal cycles. Further increasing the number of cycles (e.g., 6 or 7 times) results in very little performance improvement (i.e., diminishing marginal returns), while the cost increases linearly. Therefore, limiting the number of thermal cycles to 5 times balances the performance and production cost of the RF coaxial cable 10.

[0050] In step S3, the stretching of the RF coaxial cable 10 is stopped. After the stretching of the RF coaxial cable 10 is stopped, the RF coaxial cable 10 is allowed to retract freely.

[0051] In step S4, the RF coaxial cable 10 is bent, and the bending radius of the RF coaxial cable 10 is not less than the minimum allowable bending radius of the RF coaxial cable 10. Typically, the RF coaxial cable 10 is bent by winding it around a cylinder, with the bending direction alternating. For example, the RF coaxial cable 10 is wound clockwise around the cylinder, then removed from the cylinder, and finally wound counterclockwise around the cylinder. This repeated bending simulates the multi-directional bending conditions that the RF coaxial cable 10 may encounter in actual use, ensuring that the inner conductor 11, the dielectric layer 12, and the outer conductor 13 within the RF coaxial cable 10 reach a stable equilibrium under stress in different directions. This further eliminates the phase memory effect and ensures good phase stability of the RF coaxial cable 10 in any bending direction.

[0052] In step S5, the electrical performance of the radio frequency coaxial cable 10 is tested.

[0053] Step S5 includes: S51. Detect the phase change of the radio frequency coaxial cable 10 at different temperatures.

[0054] S52. The phase change of the radio frequency coaxial cable 10 is compared with a preset threshold, and the radio frequency coaxial cable 10 is screened according to the comparison result.

[0055] Typically, a network analyzer is used to test the phase stability of the processed RF coaxial cable 10 in the target frequency band (e.g., DC-40GHz). Then, the phase change ΔΦ of the RF coaxial cable 10 under different temperatures (e.g., -55°C, +25°C, +85°C) is compared with a preset threshold. Based on the comparison results, qualified RF coaxial cables 10 are selected. Generally, the phase change ΔΦ of a qualified RF coaxial cable 10 is less than 5°.

[0056] The method will be explained below with specific examples and data.

[0057] For a 10-meter-long RG-405 semi-rigid RF coaxial cable 10, firstly, fix both ends of the RF coaxial cable 10 to a tensile testing machine using special clamps. Then, start the tensile testing machine and apply axial tension at a slow rate until the elongation of the RF coaxial cable 10 reaches 1% of its total length (i.e., 10 cm). At this point, record the tensile force F1 as approximately 150 N. Maintain this tensile state for 20 minutes.

[0058] While maintaining tension, the entire section of the RF coaxial cable 10 was moved into the high and low temperature test chamber. Then, the thermal cycling program was initiated: the temperature was increased from 25°C to 85°C at a rate of 3°C / min and held for 30 minutes; then the temperature was decreased to -55°C at a rate of 3°C / min and held for another 30 minutes. This process was repeated for three cycles.

[0059] After the thermal cycle is completed, the tension at both ends of the RF coaxial cable 10 is released, and the RF coaxial cable 10 is left to stand freely at room temperature for 1 hour. Then, the RF coaxial cable 10 is wound clockwise once and counterclockwise once on a cylinder with a diameter of 100 mm (approximately 5 times the outer diameter of the RF coaxial cable 10), and this process is repeated 5 times.

[0060] Finally, the phase of the cable at 40 GHz was tested using a vector network analyzer, and the phase values ​​were recorded at three temperature points: -55°C, 25°C, and 85°C, as shown in Table 1.

[0061] Table 1 Temperature point -55°C 25°C 85°C Phase value (°) of the processed RF coaxial cable 1245.8 1248.0 1249.9 Phase value (°) of untreated RF coaxial cable 1243.5 1250.0 1260.5 As shown in Table 1, the maximum phase change ΔΦ of the RF coaxial cable 10 after treatment by this method is 4.1°, while the maximum phase change ΔΦ of the untreated RF coaxial cable 10 is 17.0°. Extensive experimental results show that the cable treated by the method of this application embodiment has a ΔΦ of less than 5°, while the untreated cable of the same batch has a ΔΦ of greater than 15°.

[0062] This embodiment first applies a controllable tensile stress within its elastic deformation range to the radio frequency coaxial cable 10. This forcefully straightens and tightens the inner conductor 11 inside the radio frequency coaxial cable 10, eliminating potential slack or bending and ensuring that the inner conductor 11 and the outer conductor 13 are in an ideal, parallel initial state in the axial direction. This provides a unified stress reference for subsequent thermal cycling treatment, making the release of internal stress in the radio frequency coaxial cable 10 more directional and controllable.

[0063] Then, while maintaining the stretched state, the RF coaxial cable 10 undergoes multiple thermal cycling treatments. During the process of rising from room temperature to the first target temperature and holding at that temperature, the high temperature provides sufficient energy for the movement of the polymer chains in the dielectric layer 12 inside the RF coaxial cable 10, allowing the molecular chains to rearrange and slide, thereby releasing the stress "frozen" inside the material. Simultaneously, the metal conductors (the inner conductor 11 and the outer conductor 13) also experience stress relaxation at this temperature, and this process is carried out under the constraint of axial tension. This ensures that the new equilibrium state after the material stress is released is established along the ideal axis of the RF coaxial cable 10.

[0064] Then, during the process of cooling from the first target temperature to the second target temperature and maintaining that temperature, the low temperature reduces the mobility of the polymer chains in the RF coaxial cable 10, which can "solidify" or "lock in" the new low-stress structure formed at high temperatures. Furthermore, due to the different coefficients of thermal expansion (CTE) of the various layers of the RF coaxial cable 10, thermal stress is generated under drastic temperature changes. By cycling over a wide temperature range under tensile conditions, the layers can be forced to adapt to each other's deformation, allowing the interfacial stress caused by the mismatch in CTE to be fully released and balanced, thereby greatly reducing the phase drift of the RF coaxial cable 10's structural state during subsequent temperature changes. Moreover, multiple cycles can gradually and thoroughly eliminate residual stress and the "thermal memory" effect of the material, causing the RF coaxial cable 10's structural state to tend towards a final stable equilibrium state.

[0065] Finally, by repeatedly bending the RF coaxial cable 10 above the minimum permissible bending radius without damaging it, the RF coaxial cable 10 can be allowed to experience and adapt to future working conditions in advance, which will release the newly generated, localized, and unstable stress during the bending process.

[0066] The implementation principle of the radio frequency coaxial cable processing method in this application embodiment is as follows: the phase instability caused by manufacturing stress and temperature changes is solved by stretching the radio frequency coaxial cable 10 and performing multiple thermal cycling treatments. Then, the phase instability caused by mechanical bending is solved by performing multiple bending treatments on the radio frequency coaxial cable 10. This makes the internal structure of the processed radio frequency coaxial cable 10 adjusted to a low-stress, high-stability equilibrium state, thereby comprehensively improving the phase stability of the radio frequency coaxial cable 10.

[0067] This application also discloses a radio frequency coaxial cable.

[0068] Figure 2 This is a schematic diagram of the structure of a radio frequency coaxial cable according to an embodiment of this application. (Refer to...) Figure 2 The radio frequency coaxial cable includes an inner conductor 11, a dielectric layer 12, and an outer conductor 13. The dielectric layer 12 is extruded outside the inner conductor 11 and is generally made of foamed polyethylene. The outer conductor 13 is braided outside the dielectric layer 12. The radio frequency coaxial cable is processed using radio frequency coaxial cable processing methods.

[0069] The implementation principle of a radio frequency coaxial cable according to an embodiment of this application is as follows: the internal stress of the radio frequency coaxial cable 10 processed by the radio frequency coaxial cable processing method is systematically eliminated, so that the radio frequency coaxial cable 10 has a lower phase coefficient and better phase bending stability.

[0070] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method for processing radio frequency coaxial cables, characterized in that, include: S1, stretched radio frequency coaxial cable (10); S2. Perform multiple thermal cycling treatments on the radio frequency coaxial cable (10); S3. Stop stretching the radio frequency coaxial cable (10). S4. Bend the radio frequency coaxial cable (10).

2. The method for processing radio frequency coaxial cables according to claim 1, characterized in that, Step S2 includes: S21. Raise the temperature of the radio frequency coaxial cable (10) from room temperature to a first target temperature; S22, keep the radio frequency coaxial cable (10) at the first target temperature for a third time period; S23. The radio frequency coaxial cable (10) is cooled from the first target temperature to the second target temperature; S24. The radio frequency coaxial cable (10) is kept at the second target temperature for a fourth time period. S25. Repeat steps S21, S22, S23 and S24 multiple times.

3. The method for processing radio frequency coaxial cables according to claim 2, characterized in that, In step S25, the number of times steps S21, S22, S23 and S24 are executed is between 3 and 5.

4. The method for processing radio frequency coaxial cables according to claim 2, characterized in that, In step S1, after stretching is completed, the radio frequency coaxial cable (10) is kept in the stretched state for a first time period; in step S2, the radio frequency coaxial cable (10) is placed in the stretched state for a second time period, and the radio frequency coaxial cable (10) is subjected to multiple thermal cycling treatments during the second time period.

5. The method for processing radio frequency coaxial cables according to claim 4, characterized in that, In steps S1 and S2, the elongation of the radio frequency coaxial cable (10) in the stretched state is 0.5%-2% of the total length of the radio frequency coaxial cable (10).

6. The method for processing radio frequency coaxial cables according to claim 1, characterized in that, In step S4, the bending radius of the radio frequency coaxial cable (10) is not less than the minimum allowable bending radius of the radio frequency coaxial cable (10).

7. The method for processing radio frequency coaxial cables according to claim 1, characterized in that, In step S4, the direction of bending of the radio frequency coaxial cable (10) changes alternately.

8. The method for processing radio frequency coaxial cables according to claim 1, characterized in that, The process after step S4 also includes: S5. Perform electrical performance testing on the radio frequency coaxial cable (10).

9. The method for processing radio frequency coaxial cables according to claim 8, characterized in that, Step S5 includes: S51. Detect the phase change of the radio frequency coaxial cable (10) at different temperatures; S52. The phase change of the radio frequency coaxial cable (10) is compared with a preset threshold, and the radio frequency coaxial cable (10) is screened according to the comparison result.

10. A radio frequency coaxial cable, characterized in that, It is processed using the radio frequency coaxial cable processing method as described in any one of claims 1-9.

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