CN202189875U - Low-loss radio frequency coaxial cable - Google Patents
Low-loss radio frequency coaxial cable Download PDFInfo
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- CN202189875U CN202189875U CN2011202017348U CN201120201734U CN202189875U CN 202189875 U CN202189875 U CN 202189875U CN 2011202017348 U CN2011202017348 U CN 2011202017348U CN 201120201734 U CN201120201734 U CN 201120201734U CN 202189875 U CN202189875 U CN 202189875U
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Abstract
The utility model discloses a low-loss radio frequency coaxial cable, including an internal conductor, an insulator, a first external conductor, a second external conductor and a protective which are coaxial from the interior to the exterior. Wherein the second external conductor is formed by braiding mixed braided wires of a plurality of tin-coated copper recombination wires and tin-coated copper cladding light metal conductor recombination wires with the same number to the tin-coated copper recombination wires, and the volume ratio of copper to light metal conductor is from 1:9 to 2:8. Under the condition that cost and self-weight are reduced, the low-loss radio frequency coaxial cable provided in the utility model also possesses the advantages that the attenuation and loss are low, and bending resistance is good.
Description
Technical field
The utility model relates to coaxial cable, relates in particular to a kind of low-loss radio frequency coaxial-cable.
Background technology
Excellent properties such as the low-loss radio frequency coaxial-cable has the frequency of utilization height, decay is low, loss is low, high conformity and advantages of good shielding performance also possess good bending property simultaneously.Therefore moving, obtaining application more and more widely in the transmission system of use radiofrequency signal such as microwave communication.Wherein second outer conductor 4 has the double action that has of conduction and shielding, adopts the braiding of tin-coated copper recombination line to form usually.Yet the copper in second outer conductor 4 belongs to scarce resource, scarcity of resources, so cost is higher; In addition, copper belongs to heavy metal, not only than great, makes that the deadweight of low-loss radio frequency coaxial-cable is bigger, and can cause bigger pollution to environment after discarded.Be directed to this, occurred being used for substituting the zinc-plated copper-clad light metal conductor recombination line of tin-coated copper recombination line at present again, for example tin-coated copper plated aluminium recombination line, tin-coated copper plated aluminium magnesium recombination line etc.As shown in Figure 2, it is constant that zinc-plated copper-clad light metal conductor recombination line keeps original tin layer 6, substitutes part heavy metal coppers 7 with light metal conductor cores 8, thereby reach the purpose that alleviates deadweight and reduce cost.But after substituting, difficulty of processing increases, and the low-loss radio frequency coaxial-cable finished product bending resistance of processing can greatly descend; Decay is increased; And shielding properties reduces.
The utility model content
The technical problem that the utility model will solve is to low-loss radio frequency coaxial-cable in the prior art owing to the price that adopts tin-coated copper to cause is high, self is heavy and defective that can cause environmental pollution; A kind of low-loss radio frequency coaxial-cable is provided; Make keeping under the prerequisite that decay is low, loss is little and bending resistance can be good, can reduce cost, alleviate deadweight, weaken pollution simultaneously environment.
The utility model solves the technical scheme that its technical problem adopted: a kind of low-loss radio frequency coaxial-cable is provided, comprises coaxial inner wire, insulator, first outer conductor, second outer conductor and sheath from inside to outside successively, wherein,
Said second outer conductor is formed by the mixed weaving line braiding that multiply comprises identical tin-coated copper recombination line of quantity and zinc-plated copper-clad light metal conductor recombination line, and the volume ratio of copper and light metal conductor is 1: 9～2: 8 in the said zinc-plated copper-clad light metal conductor recombination line.
In the low-loss radio frequency coaxial-cable according to the utility model embodiment, said zinc-plated copper-clad light metal conductor recombination line is tin-coated copper plated aluminium recombination line and/or tin-coated copper plated aluminium magnesium recombination line.
In the low-loss radio frequency coaxial-cable according to the utility model embodiment, said second outer conductor is formed by 24 bursts of mixed weaving line braidings that comprise 4 said tin-coated copper recombination lines and 4 said zinc-plated copper-clad light metal conductor recombination lines.
In the low-loss radio frequency coaxial-cable according to the utility model embodiment, said zinc-plated copper-clad light metal conductor recombination line is the tin-coated copper plated aluminium magnesium recombination line.
In the low-loss radio frequency coaxial-cable according to the utility model embodiment, the volume ratio of copper and magnalium is 3: 17 in the said tin-coated copper plated aluminium magnesium recombination line.
In the low-loss radio frequency coaxial-cable according to the utility model embodiment, said second outer conductor is formed by 24 bursts of mixed weaving line braidings that comprise said tin-coated copper recombination line that quantity is identical and said tin-coated copper plated aluminium magnesium recombination line.
In the low-loss radio frequency coaxial-cable according to the utility model embodiment, said first conductor is for coating the aluminium foil of said insulator.
In the low-loss radio frequency coaxial-cable according to the utility model embodiment, said inner wire is copper cover aluminum, naked copper or copper covered steel inner wire.
In the low-loss radio frequency coaxial-cable according to the utility model embodiment, said insulator is polyethylene foamed or solid polyethylene insulation body.
In the low-loss radio frequency coaxial-cable according to the utility model embodiment, said sheath is polyethylene, polyvinyl chloride, low-smoke halogen-free polyolefin or thermoplastic elastomer sheath.
The beneficial effect that the utility model produces is: owing to adopt tin-coated copper recombination line and zinc-plated copper-clad light metal conductor recombination line mixed weaving outer conductor; Light metal with low price and light specific gravity in the zinc-plated copper-clad light metal conductor recombination line wherein partly replaces heavy metal copper, has therefore reduced cost, alleviated deadweight and has weakened the pollution to environment; In addition, owing to adopt the mode of mixed weaving to process outer conductor, rather than substitute original tin-coated copper recombination line simply, the low-loss radio frequency coaxial-cable of therefore the processing advantage low, that loss is low and bending resistance can be good that still can keep decaying.
Description of drawings
Fig. 1 is the structural representation according to the low-loss radio frequency coaxial-cable of the utility model embodiment;
Fig. 2 is the schematic cross-section according to the low-loss radio frequency coaxial-cable of the utility model embodiment.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
In low-loss radio frequency coaxial-cable according to the utility model embodiment, comprise coaxial inner wire 1, insulator 2, first outer conductor 3, second outer conductor 4 and sheath 5 from inside to outside successively, as shown in Figure 1.Inner wire 1 is generally copper cover aluminum, naked copper or copper covered steel; Insulator 2 is generally polyethylene foamed (PE) or solid PE; First outer conductor 3 and second outer conductor 4 constitute outer conductor; Sheath is processed by polyethylene (PE), polyvinyl chloride (PVC), low-smoke halogen-free polyolefin (LSZH) or thermoplastic elastomer usually.Wherein, second outer conductor 4 is formed by the mixed weaving line braiding that multiply comprises tin-coated copper recombination line and zinc-plated copper-clad light metal conductor recombination line; First outer conductor 3 is an aluminium foil; As the vertical coated insulation body 2 of the aluminium foil of first outer conductor 3.Wherein, tin-coated copper recombination line and zinc-plated copper-clad light metal conductor recombination line weave second outer conductor 4 with equal number, and zinc-plated copper-clad light metal conductor recombination line is tin-coated copper plated aluminium recombination line and/or tin-coated copper plated aluminium magnesium recombination line.
Though the tin-coated copper plated aluminium recombination line is lower, in light weight than the cost of tin-coated copper plated aluminium magnesium recombination line, tensile strength is not as good as the tin-coated copper plated aluminium magnesium recombination line.Therefore when tin-coated copper recombination line and tin-coated copper plated aluminium recombination line being carried out mixed weaving when forming second outer conductor 4, difficulty of processing is relatively large.And, find that through test the tensile strength of tin-coated copper plated aluminium magnesium recombination line and elongation and tin-coated copper recombination line are very approaching, so zinc-plated copper-clad light metal conductor recombination line preferably uses the tin-coated copper plated aluminium magnesium recombination line in the utility model.
In the mixed weaving process, the advantage low in order the low-loss radio frequency coaxial-cable still to be kept decay, that loss is little and bending resistance can be good, the alternative ratio of zinc-plated copper-clad light metal conductor recombination line is a key factor.Existing is example with the mixed weaving line that preferably comprises tin-coated copper recombination line and tin-coated copper plated aluminium magnesium recombination line, and wherein per share mixed weaving line has 8 recombination lines.Find through test; When the ratio of tin-coated copper recombination line in the mixed weaving line and tin-coated copper plated aluminium magnesium recombination line is 7: 1 or 6: 2 or 5: 3; Be the substitution rate of tin-coated copper plated aluminium magnesium recombination line when low, though the low-loss radio frequency coaxial-cable still can keep the original excellent performance and can show substitution effect, substitution effect is not obvious especially; Be that cost changes not quite, and the deadweight of low-loss radio frequency coaxial-cable especially obviously alleviate.
When the ratio of tin-coated copper recombination line in the mixed weaving line and tin-coated copper plated aluminium magnesium recombination line is 3: 5 or 2: 6 or 1: 7; Be that the substitution rate of tin-coated copper plated aluminium magnesium recombination line is when higher; Though weight reduction; But because the copper major part in the outer conductor is substituted by magnalium, the shielding properties of low-loss radio frequency coaxial-cable finished product reduces, loss raising and bending resistance can weaken etc., has weakened the original excellent performance.On the other hand, because the extension performance of magnalium and tensile strength are not so good as copper, after the tin-coated copper plated aluminium magnesium recombination line substituted the tin-coated copper recombination line greatly ratio, the braiding difficulty in the processing improved, and relatively was difficult to completion processing smoothly usually.
When the ratio of tin-coated copper recombination line in the mixed weaving line and tin-coated copper plated aluminium magnesium recombination line is 4: 4; When promptly the quantity of two kinds of recombination lines is identical; Find in the test to be easy to braiding in the processing, and finished product low-loss radio frequency coaxial-cable still can keep existing various premium properties.Therefore the tin-coated copper recombination line in the mixed weaving line is identical with the quantity of zinc-plated copper-clad light metal recombination line in the utility model.
In addition; The light metal conductor also is a key factor to the alternative ratio of copper in the zinc-plated copper-clad light metal conductor recombination line; After the light metal instead of copper, should keep the various premium properties relevant, but also will realize weight reduction and be easy to processing with copper product.Find that through test in the embodiment of the utility model, the volume ratio of copper and light metal is 1: 9～2: 8 in the zinc-plated copper-clad light metal conductor recombination line.When light metal was preferably magnalium, the preferred volume ratio of copper and magnalium was 3: 17 in the tin-coated copper plated aluminium magnesium recombination line.
Table 1 will compare according to the low-loss radio frequency coaxial-cable and the industry standard value of the utility model preferred embodiment, and is more clear and shown the advantage according to the low-loss radio frequency coaxial-cable of the utility model embodiment intuitively.Wherein the outer conductor of the low-loss radio frequency coaxial-cable of sample 1 forms through the braiding of tin-coated copper recombination line; Sample 2 is the embodiment of the utility model, and promptly the outer conductor of low-loss radio frequency coaxial-cable is formed by 24 bursts of mixed weaving line braidings that comprise 4 tin-coated copper recombination lines and 4 tin-coated copper plated aluminium magnesium recombination lines.Wherein, the copper in sample 2, sample 3 and the sample 4 and the volume ratio of magnalium were respectively 3: 17,2: 8 and 1: 7, and ratio value is that 3: 17 sample 2 is the preferred embodiment in the utility model.Shown in table 1, can find out that at first the performance parameter value of sample 2 within the industry standard value range, has kept whole premium properties of existing low-loss radio frequency coaxial-cable all.Secondly; Sample 2 and sample 1 are compared the back to be found; Sample 2 than the weight saving of sample 1 nearly on the basis of 8.5g/m; Other performance and sample 1 basic identical comprise that characteristic impedance, fade performance, solderability, flexing resistance, tensile strength and temperature tolerance are basic identical, and voltage standing wave ratio is also littler.Simultaneously, the cost of sample 2 has also reduced, and the cost of sample 1 is 3.65 yuan/m, and the cost of sample 2 is 2.95 yuan/m, has descended 19%, and effect is very obvious aspect cost savings.
Certainly, those skilled in the art should know, and here 24 strands only are used as purpose for example, are not the qualification to the utility model.Only otherwise break away from the spirit and the scope of the utility model, can make corresponding modification and improvement on this basis.For example, also can be 16 strands mixed weaving line, also can comprise 3 tin-coated copper recombination lines and 3 tin-coated copper plated aluminium magnesium recombination lines in the mixed weaving line.The quantity of recombination line can be carried out adaptive adjustment according to the actual conditions of product needed and braiding machine in the number of share of stock of mixed weaving line and the mixed weaving line, and these are all within the protection range of the utility model.
Table 1 performance parameter relatively
Two other embodiment for the utility model; Be sample 3 (2: 8) each item index and sample 1, sample 2 basically identicals, but weight ratio sample 2 is bigger, sample 4 (1: 7) weight is lighter; And still kept good capacitance characteristic, impedance operator, attenuation characteristic and voltage standing wave ratio; Just solderability and tensile strength are slightly poor, but with regard to the low-loss radio frequency coaxial-cable generally speaking, above characteristic is all also within tolerance interval.In addition, sample 3 is alternative by magnalium with the copper in the sample 4, the same available purpose that reduces cost that reaches.
Can find out from above; When second outer conductor 4 of low-loss radio frequency coaxial-cable is formed by the mixed weaving line braiding of tin-coated copper recombination line that comprises equal number and zinc-plated copper-clad light metal conductor recombination line; Because adopt light metal to substitute heavy metal copper, can alleviate deadweight, reduce cost and reduce influence to environment; Adopt the recombination line mixed weaving of specific ratios to process outer conductor simultaneously, rather than substitute simply, therefore still can keep decaying low, loss is low and bending resistance can wait premium properties well.
Should be understood that, concerning those of ordinary skills, can improve or conversion, and all these improvement and conversion all should belong to the protection range of the utility model accompanying claims according to above-mentioned explanation.
Claims (10)
1. a low-loss radio frequency coaxial-cable comprises coaxial inner wire, insulator, first outer conductor, second outer conductor and sheath from inside to outside successively, it is characterized in that,
Said second outer conductor is formed by the mixed weaving line braiding that multiply comprises identical tin-coated copper recombination line of quantity and zinc-plated copper-clad light metal conductor recombination line, and the copper in the said zinc-plated copper-clad light metal conductor recombination line and the volume ratio of light metal conductor are 1: 9～2: 8.
2. low-loss radio frequency coaxial-cable according to claim 1 is characterized in that, said zinc-plated copper-clad light metal conductor recombination line is tin-coated copper plated aluminium recombination line and/or tin-coated copper plated aluminium magnesium recombination line.
3. low-loss radio frequency coaxial-cable according to claim 2 is characterized in that, said second outer conductor is formed by 24 bursts of mixed weaving line braidings that comprise 4 said tin-coated copper recombination lines and 4 said zinc-plated copper-clad light metal conductor recombination lines.
4. low-loss radio frequency coaxial-cable according to claim 1 is characterized in that, said zinc-plated copper-clad light metal conductor recombination line is the tin-coated copper plated aluminium magnesium recombination line.
5. low-loss radio frequency coaxial-cable according to claim 4 is characterized in that, the volume ratio of copper and magnalium is 3: 17 in the said tin-coated copper plated aluminium magnesium recombination line.
6. low-loss radio frequency coaxial-cable according to claim 5 is characterized in that, said second outer conductor is formed by 24 bursts of mixed weaving line braidings that comprise 4 said tin-coated copper recombination lines and 4 said tin-coated copper plated aluminium magnesium recombination lines.
7. low-loss radio frequency coaxial-cable according to claim 1 is characterized in that, said first conductor is for coating the aluminium foil of said insulator.
8. low-loss radio frequency coaxial-cable according to claim 1 is characterized in that, said inner wire is copper cover aluminum, naked copper or copper covered steel inner wire.
9. low-loss radio frequency coaxial-cable according to claim 1 is characterized in that, said insulator is polyethylene foamed or solid polyethylene insulation body.
10. low-loss radio frequency coaxial-cable according to claim 1 is characterized in that, said sheath is polyethylene, polyvinyl chloride, low-smoke halogen-free polyolefin or thermoplastic elastomer sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202017348U CN202189875U (en) | 2011-06-15 | 2011-06-15 | Low-loss radio frequency coaxial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202017348U CN202189875U (en) | 2011-06-15 | 2011-06-15 | Low-loss radio frequency coaxial cable |
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| CN202189875U true CN202189875U (en) | 2012-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202017348U Expired - Lifetime CN202189875U (en) | 2011-06-15 | 2011-06-15 | Low-loss radio frequency coaxial cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832430A (en) * | 2011-06-15 | 2012-12-19 | 深圳金信诺高新技术股份有限公司 | Low-loss radio frequency coaxial cable |
| CN103579728A (en) * | 2012-08-02 | 2014-02-12 | 深圳金信诺高新技术股份有限公司 | Semi-flexible radio-frequency coaxial cable |
-
2011
- 2011-06-15 CN CN2011202017348U patent/CN202189875U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832430A (en) * | 2011-06-15 | 2012-12-19 | 深圳金信诺高新技术股份有限公司 | Low-loss radio frequency coaxial cable |
| CN103579728A (en) * | 2012-08-02 | 2014-02-12 | 深圳金信诺高新技术股份有限公司 | Semi-flexible radio-frequency coaxial cable |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120411 |
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| CX01 | Expiry of patent term |