CN214589262U - Temperature ultra-stable phase radio frequency coaxial cable - Google Patents

Abstract

The utility model discloses a super steady looks radio frequency coaxial cable of temperature, include by interior conductor core (1), insulating layer (2), outer conductor (3), outer shielding layer (4) and restrictive coating (5) of coaxial setting in proper order outside to, insulating layer (2) adopt the lotus root core to push the fusibility polytetrafluoroethylene heart yearn of sintering structure cover in the outside of inner conductor core (1), outer conductor (3) adopt the strip around wrap in the insulating layer (2) outside, outer shielding layer (4) adopt the silk material to cover in the outside of outer conductor (3), restrictive coating (5) wrap up in the outside of outer shielding layer (4). The phase-locked loop has the excellent characteristics of super-stable temperature phase, almost no influence on the phase of the temperature phase at the working temperature, wide frequency band and high cost performance, and can be applied to the environment with severe temperature phase and high temperature phase precision.

Description

Temperature ultra-stable phase radio frequency coaxial cable

Technical Field

The utility model belongs to the technical field of the cable, concretely relates to super steady looks radio frequency coaxial cable of temperature.

Background

The cable market scale will grow rapidly as the total number of antennas in the 5G market increases. The technical innovation capability of the industrial communication industry in China is greatly improved, the 5G network which is basically a non-independent networking is promoted in various places at present, and the formal large-scale investment of the 5G network for the independent networking in China is expected in the next year. About 80% of applications are in object-to-object communications, such as industrial internet, car networking, telemedicine, and the like. In the future, the requirements of more high-reliability, low-delay and massive machine connection applications are realized by depending on independent networking 5G. The 5G era has come, the military and civil radio frequency industries have rapidly developed, and the stabilization, the precision and the modularization of electronic components, measuring instruments, instruments and communication equipment have become necessary trends.

In the current communication market which is changing day by day, along with the continuous and rapid development of communication technology, the radio frequency performance index of a system needs to be improved, and a high-quality product solution is provided for network coverage problems such as a high-density environment, a complex terrain and the like, so that the microwave cable is required to have low transmission loss and stable performance, and further requires the harsh requirement of the cable on the bearing of the external environment and higher cost performance. At present, solid polytetrafluoroethylene core wires, foamed polytetrafluoroethylene core wires or microporous polytetrafluoroethylene core wires are adopted in common cables in the market. The former has convenient processing, low cost and long service life, but has unstable performance and large attenuation; the latter two have good performance, small attenuation and stable performance, but the processing is troublesome, the cost is high, the service life is short and the product is easy to damage; however, in general, due to the dielectric constant of the dielectric material, structural changes caused by material expansion, and stress changes, the actual electrical length of the phase-stable cable assembly will change correspondingly.

Disclosure of Invention

In order to solve the problem in the prior art, the utility model provides a temperature hyperstable looks radio frequency coaxial cable has temperature phase stability, frequency bandwidth, advantage that the price/performance ratio is high, can be applied to under the harsh environment of temperature phase requirement.

In order to realize the above purpose, the utility model discloses the technical scheme who adopts does: include by interior inner conductor line core, insulating layer, outer conductor, outer shielding layer and the restrictive coating of coaxial setting in proper order outside to, the insulating layer adopts the lotus root core to push the fusibility polytetrafluoroethylene heart yearn of sintering structure cover in the outside of inner conductor line core, the outer conductor adopt the strip around the package in the insulating layer outside, outer shielding layer adopts the silk material to cover in the outside of outer conductor, the restrictive coating wrap up in the outside of outer shielding layer.

Preferably, the inner conductor wire core is a single-core silver-plated copper wire core.

Preferably, a plurality of air holes are distributed on the surface of the insulating layer along the circumferential direction.

Preferably, the number of the air holes is eight.

Preferably, the outer conductor is wrapped by silver-plated copper strips to form a tubular structure.

Preferably, the outer conductor is spirally wound by silver-plated copper strips to form a spiral tubular structure.

Preferably, the silver-plated copper tape is wrapped with 1/2 selvedges.

Preferably, the outer shielding layer is formed by interweaving silver-plated copper wires and covers the outer side of the outer conductor.

Preferably, the coverage rate of the outer shielding layer covering the outer conductor is greater than or equal to 93%.

Preferably, the sheath layer is a tubular structure formed by thermoplastic of perfluoroethylene propylene copolymer.

Compared with the prior art, the utility model adopts the meltable polytetrafluoroethylene core wire with lotus root core pushing and sintering structure as the insulating layer to replace the solid polytetrafluoroethylene, the foamed polytetrafluoroethylene or the microporous polytetrafluoroethylene on the market; compared with solid-core solid polytetrafluoroethylene, foamed polytetrafluoroethylene and microporous polytetrafluoroethylene, the fusible polytetrafluoroethylene core wire obtained by pushing and sintering the lotus root core has excellent temperature phase requirements, and the best temperature phase cable on the market can only reach 550 PPM; the meltable polytetrafluoroethylene has the performance equivalent to that of the polytetrafluoroethylene, the fusion cohesiveness is enhanced, the viscosity of a solution is reduced, and the performance can effectively reduce and avoid the influence of the external temperature on the material. In addition, a unique lotus root core pushing and sintering structure is adopted, and the excellent performance is achieved in a harsh environment, so that the prepared temperature-ultrastable-phase radio-frequency coaxial cable has the advantages that the temperature-ultrastable phase can reach 250PPM, the phase of the temperature phase is hardly influenced in the working temperature, the frequency band is wide, the cost performance is high, and the temperature-ultrastable-phase radio-frequency coaxial cable can be applied to the environment with harsh temperature phase and high temperature phase precision.

Furthermore, the inner conductor wire core adopts a single-core silver-plated copper wire core, and the structure can well improve the stability and the signal transmission performance of the cable.

Furthermore, the insulating layer adopts a lotus root core to push and sinter the meltable polytetrafluoroethylene core insulating layer, and a plurality of air holes are regularly distributed on the surface, so that the signal transmission of the cable is effectively enhanced, the attenuation is improved, the influence of the external temperature change on the phase is effectively reduced, and the temperature phase super-stability can reach 250 PPM.

Furthermore, the outer conductor is of a spiral tubular structure formed by spirally wrapping a silver-plated copper strip, wherein the silver-plated copper strip is wrapped by 1/2 overlapped edges; the spiral tubular structure is the most stable structure in the international low-loss stable phase, and the transmission performance of the cable is effectively improved.

Furthermore, the outer shielding layer is woven by silver-plated copper wires in a staggered mode and covers the outer conductor, the coverage rate of the outer shielding layer is not less than 93%, a compact shielding layer is formed on the outer conductor, and the woven outer shielding mainly plays a role in shielding electromagnetic interference and improving the mechanical strength of a product.

Furthermore, the sheath layer is of a tubular structure formed by thermoplastic perfluoro ethylene propylene copolymer, and surrounds the outer layer of the braided outer shield to play a role in protecting the cable. The sheath layer is made of a thermoplastic material of perfluoroethylene propylene copolymer, so that the sheath layer has excellent friction resistance, mechanical property, chemical resistance, moisture resistance and different environment resistance, the working temperature can reach-55-165 ℃, the function of protecting the conductor core in the cable is achieved, and the inherent mechanical property and durability of the cable are ensured.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of an embodiment of the invention;

the cable comprises an inner conductor wire core 1, an insulating layer 2, an outer conductor 3, an outer shielding layer 4 and a sheath layer 5.

Detailed Description

The present invention will be further explained with reference to the drawings and specific examples, which are illustrated in the attached drawings, and it is to be understood that the described examples are only a part of the present application and not all of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the utility model provides a temperature hyperstable looks radio frequency coaxial cable, specially adapted temperature phase requires under the harsh environment, see fig. 1 and fig. 2, it includes by interior to outer coaxial setting's inner conductor core 1 in proper order, insulating layer 2, outer conductor 3, outer shielding layer 4 and restrictive coating 5, insulating layer 2 adopts the lotus root core to push the fusibility polytetrafluoroethylene heart yearn of sintered structure and covers in the outside of inner conductor core 1, outer conductor 3 adopts the strip to wrap in the insulating layer 2 outside, outer shielding layer 4 adopts the silk material to cover in the outside of outer conductor 3, restrictive coating 5 wraps up in the outside of outer shielding layer 4.

In the embodiment, a fusible polytetrafluoroethylene core wire with a lotus root core pushing and sintering structure is used as the insulating layer 2 to replace solid polytetrafluoroethylene, foamed polytetrafluoroethylene or microporous polytetrafluoroethylene on the market; compared with solid-core solid polytetrafluoroethylene, foamed polytetrafluoroethylene and microporous polytetrafluoroethylene, the fusible polytetrafluoroethylene core wire obtained by pushing and sintering the lotus root core has excellent temperature phase requirements, and the best temperature phase cable on the market can only reach 550 PPM; the meltable polytetrafluoroethylene has the performance equivalent to that of the polytetrafluoroethylene, the fusion cohesiveness is enhanced, the viscosity of a solution is reduced, and the performance can effectively reduce and avoid the influence of the external temperature on the material. In addition, a unique lotus root core pushing and sintering structure is adopted, and the excellent performance is achieved in a harsh environment, so that the prepared temperature-ultrastable-phase radio-frequency coaxial cable has the advantages that the temperature-ultrastable phase can reach 250PPM, the phase of the temperature phase is hardly influenced in the working temperature, the frequency band is wide, the cost performance is high, and the temperature-ultrastable-phase radio-frequency coaxial cable can be applied to the environment with harsh temperature phase and high temperature phase precision.

Preferably, the inner conductor wire core 1 adopts a single-core silver-plated copper wire core, and the structure can well improve the stability and the signal transmission performance of the cable.

Preferably, insulating layer 2 adopts the lotus root core to push away the meltable polytetrafluoroethylene heart yearn of sintered structure as insulating layer 2, and the regular a plurality of gas pockets that distribute in surface, and this embodiment is preferred to be provided with eight gas pockets, can effectually strengthen the signal transmission of cable, has promoted the decay, and its temperature variation of effectual reduction external world is to the phase place influence, and temperature phase place super stability can reach 250 PPM.

Preferably, the strip material adopted by the outer conductor 3 is a silver-plated copper strip, the outer conductor 3 is wrapped by the silver-plated copper strip to form a tubular structure, further preferably, the silver-plated copper strip is spirally wrapped to form a spiral tubular structure, wherein the silver-plated copper strip is wrapped by 1/2 overlapping edges; the spiral tubular structure is the most stable structure in the international low-loss stable phase, and the transmission performance of the cable is effectively improved.

Preferably, the wire material adopted by the outer shielding layer 4 is a silver-plated copper wire, the outer shielding layer 4 is woven by the silver-plated copper wire in a staggered mode and covers the outer side of the outer conductor 3, the coverage rate of the outer shielding layer 4 is not less than 93%, a compact shielding layer is formed on the outer conductor 3, and the woven outer shielding mainly plays a role in shielding electromagnetic interference resistance and improving the mechanical strength of a product.

Preferably, the sheath layer 5 is a tubular structure formed by thermoplastic perfluoroethylene propylene copolymer, which surrounds the outer layer of the braided outer shield layer 4 and serves to protect the cable. The material of the sheath layer 5 is a thermoplastic material of perfluoroethylene propylene copolymer, so that the sheath layer 5 has excellent friction resistance, mechanical property, chemical resistance, moisture resistance and different environment resistance, the working temperature can reach-55 to 165 ℃, the function of protecting the conductor core 1 in the cable is achieved, and the inherent mechanical property and durability of the cable are ensured.

The embodiment of the utility model provides a super steady looks radio frequency coaxial cable of temperature has the super steady looks of temperature, the temperature phase place is hardly influenced, the frequency bandwidth, the excellent characteristics of price/performance ratio height in operating temperature phase place, can be applied to the environment that the temperature phase place is harsh and temperature phase place precision is high probably.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims (10)

1. The utility model provides a super steady looks radio frequency coaxial cable of temperature, its characterized in that includes by interior conductor core (1), insulating layer (2), outer conductor (3), outer shielding layer (4) and restrictive coating (5) of coaxial setting in proper order outside to, insulating layer (2) adopt the lotus root core to push the fusibility polytetrafluoroethylene heart yearn of sintered structure cover in the outside of inner conductor core (1), outer conductor (3) adopt the strip around wrap in insulating layer (2) outside, outer shielding layer (4) adopt the silk material to cover in the outside of outer conductor (3), restrictive coating (5) wrap up in the outside of outer shielding layer (4).

2. The temperature ultra-stable phase radio frequency coaxial cable according to claim 1, wherein the inner conductor core (1) is a single-core silver-plated copper metal core.

3. The temperature-ultrastable phase radio-frequency coaxial cable according to claim 1, wherein a plurality of air holes are distributed on the surface of the insulating layer (2) along the circumferential direction.

4. The temperature-ultrastable phase radio-frequency coaxial cable according to claim 3, wherein the number of the air holes is eight.

5. The temperature-ultrastable phase radio-frequency coaxial cable as claimed in claim 1, wherein the outer conductor (3) is wrapped with silver-plated copper tape to form a tubular structure.

6. The temperature-ultrastable phase radio-frequency coaxial cable according to claim 5, wherein the outer conductor (3) is spirally wound by silver-plated copper strips to form a spiral tubular structure.

7. The temperature-hyperstable phase radio frequency coaxial cable of claim 6, wherein the silver-plated copper tape is wrapped with 1/2 folded edges.

8. The temperature-ultrastable phase radio-frequency coaxial cable according to claim 1, wherein the outer shielding layer (4) is braided with silver-plated copper wires in a staggered manner and covers the outer side of the outer conductor (3).

9. The temperature-ultrastable phase radio-frequency coaxial cable according to claim 8, wherein the coverage rate of the outer shielding layer (4) on the outer conductor (3) is greater than or equal to 93%.

10. The temperature-ultrastable phase radio-frequency coaxial cable as claimed in claim 1, wherein the sheath layer (5) is a tubular structure formed by thermoplastic perfluoroethylene propylene copolymer.

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