CN102544784B - Structure for connecting braided coaxial cable and connector to realize low passive inter-modulation performance - Google Patents
Structure for connecting braided coaxial cable and connector to realize low passive inter-modulation performance Download PDFInfo
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- CN102544784B CN102544784B CN201210048717.4A CN201210048717A CN102544784B CN 102544784 B CN102544784 B CN 102544784B CN 201210048717 A CN201210048717 A CN 201210048717A CN 102544784 B CN102544784 B CN 102544784B
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- 229910000679 solder Inorganic materials 0.000 claims abstract description 43
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 38
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000003466 welding Methods 0.000 claims abstract description 33
- 239000005030 aluminium foil Substances 0.000 claims description 84
- 239000004411 aluminium Substances 0.000 claims description 28
- 239000010410 layer Substances 0.000 abstract description 97
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 238000005476 soldering Methods 0.000 description 5
- 238000009954 braiding Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
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- 239000002355 dual-layer Substances 0.000 description 2
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- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
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Abstract
The invention relates to a structure for connecting a braided coaxial cable and a connector to realize a low passive inter-modulation performance. The braided coaxial cable is provided with an aluminum foil layer and a braided layer; the connector is provided with an external conductor of the connector; the aluminum foil layer is composed of single layer of aluminum foil; the aluminum foil layer, the braided layer and the external conductor of the connector are welded together through a low-temperature and lead-free aluminum solder; or the external conductor of the connector is connected between the aluminum foil layer and the braided layer in a pressing manner; and the external conductor of the connector is connected with a medium layer and the aluminum foil layer of the braided coaxial cable in a precise transition fit manner. Preferably, the thickness of the single layer of the aluminum foil is 20-25 microns, the low-temperature and lead-free aluminum solder is Sn98Cu2+Flux2.5, the welding is the 360-degree welding, the maximum magnitude of interference of the precise transition fit is 0.05 mm, the maximum clearance is 0.05 mm, and the pressed length is 8-14 mm. The structure provided by the invention is ingenious in design and simple in structure and can obtain low passive inter-modulation; and meanwhile, the cost is not increased and the application of braided cables is expanded, so that the structure is applicable to being popularized and applied in a large scale.
Description
Technical field
The present invention relates to radio signal transmission technical field, particularly the syndeton of coaxial cable and connector, specifically refer to and a kind ofly realize the braided coaxial cable of low passive inter-modulation performance and the syndeton of connector.
Background technology
At present, for 50 ohm of Weaving type cable products, PIM (Passive Inter-Modulation Distortion, passive intermodulation distortion) performance is a highstrung topic, commercially seldom finds any description or data from product description and website.
Owing to being used in the intrinsic shortcoming of the outer conductor-braid of 50 ohm of braided coaxial cables of the communications industry and aluminium foil layer (double-layer aluminum-foil of PET/EAA bonding), therefore between cable outer conductor and radio frequency connector outer conductor, be not easy the consistent contact obtaining 360 degree, it is the key factor causing higher PIM value.Braid can be connected with crimping or fixture (crimp and clamp mechanism) connector usually; limited by syndeton; applicant studies and finds that holding attaching mechanism cannot obtain superior PIM performance, and PIM test result also demonstrates the estimation of applicant.Fig. 1 shows the PIM performance that two ends are the standard clamping N public connector of standard C NT-400 braid.Only obtain the performance of the unstable dynamic PIM of the static PIM and-67dBm of-79dBm, as shown in test picture.
In order to improve passive intermodulation (PIM) performance, the outer conductor of the connector of Chinese patent application CN201110092446.8 has passage two, the outer conductor (specifically braid) of radio frequency cable inserts passage two, is welded between the two by solder two.Similar with Chinese patent application CN201120107680.9.The outer conductor (specifically screen) of cable is inserted the outer conductor (lining) of connector and welds, specifically soldering by Chinese patent application CN02224990.7.The connector of Chinese patent application CN200910034810.8 welds the outside of the outer conductor of coaxial cable, specifically soldering by adapter sleeve.Similar with Chinese patent application CN200920230863.2.The outer conductor of the radio frequency coaxial-cable of Chinese patent application CN200910175583.0 inserts the outer conductor of connector and welds.Similar with Chinese patent application CN200920043488.0.The outer conductor of the cable of Chinese patent application CN200910102882.1 inserts the outer conductor of connector and welds.The screen (being equivalent to outer conductor) of the coaxial cable of Chinese patent application CN200910024151.X inserts the outer conductor of connector and welds.Similar with Chinese patent application CN200920034830.0.The outer conductor of the radio frequency coaxial-cable of Chinese patent application CN200920241297.5 inserts the housing (being equivalent to the outer conductor of connector) of connector, welds between the two, specifically soldering.The outer conductor of the radio frequency coaxial-cable of Chinese patent application CN201020608099.0 inserts the outer conductor of connector, welds between the two.The screen (being equivalent to outer conductor) of the radio frequency coaxial-cable of Chinese patent application CN200920299606.4 is crimped between the outer conductor of connector and line ball pipe.US Patent No. 6,053, the outer conductor of the coaxial cable of 769 is made up of layer of metal film, can be copper, aluminium etc., weld in the outer conductor that the outer conductor of coaxial cable inserts connector, wherein outer conductor is 5 μm and without braid, and explicitly points out this thin metal outer conductor structure and there is intrinsic defect: yielding, fracture is peeled off, poor mechanical stability.This structure can cause poor PIM test result (-70 ~ 80dBm).US Patent No. 5,802, welds in the outer conductor that the outer conductor (such as braid) of the coaxial cable of 710 inserts connector.Similar with European patent application EP 0838880.Weld in the outer conductor that the outer conductor of the coaxial cable of PCT patent application WO/2003/061075 inserts connector.But although the syndeton of coaxial cable in all above-mentioned patent documentations and connector improves PIM performance to a certain extent, PIM performance is still poor.
Current industry has occurred taking passive intermodulation (PIM) performance as braid and the connector product of technological highlights, but be all carry out around braid substantially, this one deck screen of aluminium foil is removed in modular design wherein, and braid is thickeied encryption to improve count or to improve the braiding number of plies, the braid being generally one deck is brought up to two-layer, three layers or even four layers added the shield effectiveness of last layer braiding with former one deck aluminium foil to reach, connector is connected with the braid of this low PIM design, has welding, clamped-in style termination etc., identical with the cable bindiny mechanism design principle of connector existing on market, without new meaning.Simultaneously owing to eliminating the distinctive shielding mode of this braid of aluminium foil, and strengthen count or increase the braiding number of plies, braid is made not have cost advantage comparing with smooth wall cable with the corrugated cable of 360 ° of full copper or full aluminium, performance is in a disadvantageous position again as high frequency, High-Power Microwave application and high EMC Requirements (EMC) occasion etc.
Due to traditional braid passive intermodulation (PIM) poor-performing, PIM representative value only has-60 ~-80dBm, seriously limits the application of braid at wireless communication field.Along with wireless communication field 3G is to the continuous evolution in 4G and LTE field, require to improve all the more to radio channel capacity and receiver sensitivity, so the interference free performance of wireless air-link requires more and more higher, as the radio frequency cable of wireless radio-frequency link important component part, passive intermodulation (PIM) performance of connector is more and more significant, so low passive intermodulation (PIM) design of braid has become a technical task being badly in need of solving.Therefore, need to carry out novelty improvement to the syndeton of existing braided coaxial cable and connector, to obtain low passive intermodulation, do not increase cost simultaneously, the application of expansion braid.
Summary of the invention
The object of the invention is to overcome above-mentioned shortcoming of the prior art, there is provided a kind of and realize the braided coaxial cable of low passive inter-modulation performance and the syndeton of connector, its design is ingenious, simple for structure, low passive intermodulation can be obtained, do not increase cost simultaneously, the application of expansion braid, is suitable for large-scale promotion application.
To achieve these goals, in a first aspect of the present invention, provide and a kind ofly realize the braided coaxial cable of low passive inter-modulation performance and the syndeton of connector, comprise braided coaxial cable and connector, described braided coaxial cable has aluminium foil layer and braid, described connector has connector outer conductor, be characterized in, described aluminium foil layer is individual layer aluminium foil, the described braided coaxial cable realizing low passive inter-modulation performance and the syndeton of connector also comprise low-temperature lead-free aluminium solder, described aluminium foil layer, described braid and described connector outer conductor are welded together by described low-temperature lead-free aluminium solder.
Preferably, the thickness of described individual layer aluminium foil is 20 μm ~ 25 μm.
Preferably, described low-temperature lead-free aluminium solder is made up of main solder and scaling powder, described main solder is made up of the tin of 98% weight percentage and the copper of 2% weight percentage, and the addition of described scaling powder is 2.5% weight percentage of described main solder, is abbreviated as Sn98Cu2+Flux2.5.
Preferably, the shape of described low-temperature lead-free aluminium solder is solder stick, weld tabs or weld-ring.
Preferably, described welding is 360 ° of welding.
More preferably, the length of described welding is 8mm ~ 12mm.
In a second aspect of the present invention, provide and a kind ofly realize the braided coaxial cable of low passive inter-modulation performance and the syndeton of connector, comprise braided coaxial cable and connector, described braided coaxial cable has aluminium foil layer and braid, described connector has connector outer conductor, be characterized in, described aluminium foil layer is individual layer aluminium foil, the thickness of described individual layer aluminium foil is 20 μm ~ 25 μm, the described braided coaxial cable realizing low passive inter-modulation performance and the syndeton of connector also comprise low-temperature lead-free aluminium solder, described aluminium foil layer, described braid and described connector outer conductor are welded together by described low-temperature lead-free aluminium solder, described low-temperature lead-free aluminium solder is made up of main solder and scaling powder, described main solder is made up of the tin of 98% weight percentage and the copper of 2% weight percentage, the addition of described scaling powder is 2.5% weight percentage of described main solder, described welding is 360 ° of welding.
Preferably, the length of described welding is 8mm ~ 12mm.
Preferably, the shape of described low-temperature lead-free aluminium solder is solder stick, weld tabs or weld-ring.
In a third aspect of the present invention, provide and a kind ofly realize the braided coaxial cable of low passive inter-modulation performance and the syndeton of connector, comprise braided coaxial cable and connector, described braided coaxial cable has dielectric layer, aluminium foil layer and braid, described connector has connector outer conductor, be characterized in, described aluminium foil layer is individual layer aluminium foil, described connector outer conductor is crimped between described aluminium foil layer and described braid, and is accurate interference fits between the described dielectric layer of described connector outer conductor and described braided coaxial cable and described aluminium foil layer.
Preferably, the thickness of described individual layer aluminium foil is 20 μm ~ 25 μm.
Preferably, the maximum interference amount of the interference fits of described precision is 0.05mm, and maximal clearance amount is 0.05mm.
Preferably, the length of described crimping is 8mm ~ 14mm.
In a fourth aspect of the present invention, provide and a kind ofly realize the braided coaxial cable of low passive inter-modulation performance and the syndeton of connector, comprise braided coaxial cable and connector, described braided coaxial cable has dielectric layer, aluminium foil layer and braid, described connector has connector outer conductor, be characterized in, described aluminium foil layer is individual layer aluminium foil, the thickness of described individual layer aluminium foil is 20 μm ~ 25 μm, described connector outer conductor is crimped between described aluminium foil layer and described braid, and be accurate interference fits between the described dielectric layer of described connector outer conductor and described braided coaxial cable and described aluminium foil layer, the maximum interference amount of the interference fits of described precision is 0.05mm, maximal clearance amount is 0.05mm, the length of described crimping is 8mm ~ 14mm.
Beneficial effect of the present invention is specific as follows:
1, the syndeton of the braided coaxial cable and connector that realize low passive inter-modulation performance of the present invention comprises braided coaxial cable and connector, described braided coaxial cable has aluminium foil layer and braid, described connector has connector outer conductor, described aluminium foil layer is individual layer aluminium foil, the described braided coaxial cable realizing low passive inter-modulation performance and the syndeton of connector also comprise low-temperature lead-free aluminium solder, described aluminium foil layer, described braid and described connector outer conductor are welded together by described low-temperature lead-free aluminium solder, design ingenious, simple for structure, low passive intermodulation can be obtained, do not increase cost simultaneously, the application of expansion braid, be suitable for large-scale promotion application.
2, the syndeton of the braided coaxial cable and connector that realize low passive inter-modulation performance of the present invention comprises braided coaxial cable and connector, described braided coaxial cable has dielectric layer, aluminium foil layer and braid, described connector has connector outer conductor, described aluminium foil layer is individual layer aluminium foil, described connector outer conductor is crimped between described aluminium foil layer and described braid, and be accurate interference fits between the described dielectric layer of described connector outer conductor and described braided coaxial cable and described aluminium foil layer, design ingenious, simple for structure, low passive intermodulation can be obtained, do not increase cost simultaneously, the application of expansion braid, be suitable for large-scale promotion application.
Accompanying drawing explanation
Fig. 1 is the PIM performance schematic diagram of the public clamping connector of standard N of assembling standard C NT-400 braid.
Fig. 2 is the schematic perspective view of a specific embodiment of braided coaxial cable of the present invention.
Fig. 3 is the cross-sectional schematic realizing a specific embodiment of the braided coaxial cable of low passive inter-modulation performance and the syndeton of connector of the present invention.
Fig. 4 is the cross-sectional schematic realizing another specific embodiment of the braided coaxial cable of low passive inter-modulation performance and the syndeton of connector of the present invention.
Embodiment
In order to more clearly understand technology contents of the present invention, describe in detail especially exemplified by following examples.Wherein identical parts adopt identical Reference numeral.About PIM method of testing, according to IEC-62037-6, test 15ea cable, welding edges or crimp connector, to run complete test, meet the general test requirement of IEC-61169-1 and IEC60096-1 radio frequency connector and cable completely.
Shown in Figure 3, what Fig. 3 showed is the specific embodiment realizing the braided coaxial cable of low passive inter-modulation performance and the syndeton of connector of the present invention, comprise braided coaxial cable 1 and connector 2, described braided coaxial cable 1 has aluminium foil layer 11 and braid 12, described connector 2 has connector outer conductor 21, described aluminium foil layer 11 is individual layer aluminium foil, described braided coaxial cable 1 also comprises low-temperature lead-free aluminium solder 3 with the syndeton of connector 2, described aluminium foil layer 11, described braid 12 and described connector outer conductor 21 are welded together by described low-temperature lead-free aluminium solder 3.
The concrete structure of braided coaxial cable 1 is shown in Figure 2, and its center is cable inner conductor 13, is then followed successively by dielectric layer 14, aluminium foil layer 11, screen 12 and external insulation 15 from inside to outside, and aluminium foil layer 11 and screen 12 form cable outer conductor.Refer again to shown in Fig. 3, cable inner conductor 13 is connected conducting with connector inner wire 22.
The thickness of described individual layer aluminium foil can adopt suitable thickness, and preferably, the thickness of described individual layer aluminium foil is 20 μm ~ 25 μm.
Described low-temperature lead-free aluminium solder can adopt any suitable low-temperature lead-free aluminium solder, preferably, described low-temperature lead-free aluminium solder is made up of main solder and scaling powder, described main solder is made up of the tin of 98% weight percentage and the copper of 2% weight percentage, and the addition of described scaling powder is 2.5% weight percentage of described main solder.Scaling powder can be the scaling powder of any suitable weldering aluminium, the scaling powder be such as made up of the rosin of 92% weight percentage and the activating agent of 8% weight percentage.
The shape of described low-temperature lead-free aluminium solder can be the shape of any applicable welding, and preferably, the shape of described low-temperature lead-free aluminium solder is solder stick, weld tabs or weld-ring etc.
In order to improve PIM performance better, preferably, described welding is 360 ° of welding.
The length of described welding can be determined as required, and in order to obtain stable PIM performance, preferably, the length of described welding is 8mm ~ 12mm.
For the aluminium foil layer 11 of connector outer conductor 21 and braid, braid 12 weld situation, carried out some comparative experimentss, specific as follows:
1. adopt common tin solder (Guangzhou Tian Shuo Electronic Technology Co., Ltd., lead-free soldering wire) weld general dual layer aluminium foil braid (manufacturer: Kang Pu company [CommScope]) and connector (manufacturer: Kang Pu company [CommScope]): welding cannot realize 360 ° of welding, the length of welding is 8mm ~ 12mm, weld connector outer conductor 21 and braid 12, do not weld aluminium foil.
2. adopt common tin solder (Guangzhou Tian Shuo Electronic Technology Co., Ltd., lead-free soldering wire) weld braided coaxial cable (thickness of individual layer aluminium foil is 20 μm ~ 25 μm) and the connector (manufacturer: Kang Pu company [CommScope]) with special individual layer aluminium foil of the present invention: welding cannot realize 360 ° of welding, the length of welding is 8mm ~ 12mm, weld connector outer conductor 21 and braid 12, do not weld aluminium foil.
3. adopt low-temperature lead-free aluminium solder (Guangzhou Tian Shuo Electronic Technology Co., Ltd., weldering aluminium is without slicker solder material) weld general dual layer aluminium foil braid (manufacturer: Kang Pu company [CommScope]) and connector (manufacturer: Kang Pu company [CommScope]): welding can realize 360 ° of welding, the length of welding is 8mm ~ 12mm, can to burn-on connector outer conductor 21, braid 12 and aluminium foil, but can not get low PIM value, on average in-118dBc (-75dBm) left and right.
4. adopt low-temperature lead-free aluminium solder (Guangzhou Tian Shuo Electronic Technology Co., Ltd., weldering aluminium is without slicker solder material) weld braided coaxial cable (thickness of individual layer aluminium foil is 20 μm ~ 25 μm) and the connector (manufacturer: Kang Pu company [CommScope]) with special individual layer aluminium foil of the present invention: welding can realize 360 ° of welding, the length of welding is 8mm ~ 12mm, the welding of connector outer conductor 21, braid 12 and aluminium foil is reliable, and low PIM value can be obtained, on average in-150dBc (-107dBm) left and right.
Therefore, the present invention adopts low-temperature lead-free aluminium solder 3 to be welded with connector outer conductor 21 together with braid 12 by special individual layer aluminium foil, just can obtain the performance of significant low intermodulation.
Shown in Figure 4, what Fig. 4 showed is another specific embodiment realizing the braided coaxial cable of low passive inter-modulation performance and the syndeton of connector of the present invention, comprise braided coaxial cable 1 and connector 2, described braided coaxial cable 1 has dielectric layer 14, aluminium foil layer 11 and braid 12, described connector 2 has connector outer conductor 21, described aluminium foil layer 11 is individual layer aluminium foil, described connector outer conductor 21 is crimped between described aluminium foil layer 11 and described braid 12, and be accurate interference fits between the described dielectric layer 14 of described connector outer conductor 21 and described braided coaxial cable 1 and described aluminium foil layer 11.
The concrete structure of braided coaxial cable 1 is identical with the braided coaxial cable 1 shown in above-mentioned Fig. 2, similarly, center is cable inner conductor 13, is then followed successively by dielectric layer 14, aluminium foil layer 11, screen 12 and external insulation 15 from inside to outside, and aluminium foil layer 11 and screen 12 form cable outer conductor.Please participate in shown in Fig. 4, cable inner conductor 13 is connected conducting with connector inner wire 22 again.
The thickness of described individual layer aluminium foil can adopt suitable thickness, and preferably, the thickness of described individual layer aluminium foil is 20 μm ~ 25 μm.
The interference fits of described precision is well known to those skilled in the art, and preferably, the maximum interference amount of the interference fits of described precision is 0.05mm, and maximal clearance amount is 0.05mm
In order to improve PIM performance better, preferably, the length of described crimping is 8mm ~ 14mm.
For the matching relationship between the dielectric layer 14 of connector outer conductor 21 and braided coaxial cable 1 and aluminium foil layer 11 (dielectric layer 14 and aluminium foil layer 11 overall as), the tight and pine of this matching relationship will determine the quality of PIM.Below some relevant experimental data:
Table 1
Wherein in sample 1 ~ 3, the thickness of individual layer aluminium foil is 20 ~ 25 μm, the maximum interference amount of accurate interference fits is 0.05mm, maximal clearance amount is 0.05mm, and the length of crimping is 8mm ~ 14mm, and connector 2 is connector (manufacturer: Kang Pu company [CommScope]).
1. the general matched in clearance in form, accurate interference fits, general interference fit all refer to the matching relationship between the dielectric layer 14 of connector outer conductor 21 and braided coaxial cable 1 and aluminium foil layer 11.
2. braided coaxial cable 1 also must be the cable that low passive intermodulation (PIM) designs, otherwise inapplicable experiment.
3. be as can be seen from the table above, well below required value (required value of PIM is not more than-107dBm) for general matched in clearance passive intermodulation PIM.Because the connection of braided coaxial cable 1 and connector 2 is without the requirement of passive intermodulation PIM, therefore general matched in clearance is the current fit system generally used.
4. for general interference fit, applicant has also done corresponding test, as can be seen from the above table, when matching relationship between the dielectric layer 14 and aluminium foil layer 11 of connector outer conductor 21 and braided coaxial cable 1 adopts interference fit, its passive intermodulation value PIM is very good under the condition of normal temperature, but its impact by environment is large especially, after the test of high/low temperature circulation, its passive intermodulation value PIM is also lower than required value.
5. through the com-parison and analysis of a large amount of experiments and multi-group data, applicant can reach the more satisfactory passive intermodulation PIM met the demands after finally showing that the matching relationship between the dielectric layer 14 of connector outer conductor 21 and braided coaxial cable 1 and aluminium foil layer 11 adopts accurate interference fits.
The data of different matching relationship are crimped in table 2 from connector (manufacturer: Kang Pu company [CommScope]) such as, for traditional braid (bonding double-layer aluminum-foil, traditional braid that Kang Pu company [CommScope] produces).
Table 2
Therefrom can find out, traditional braid (bonding double-layer aluminum-foil) crimps with connector (manufacturer: Kang Pu company [CommScope]) and no matter adopts which kind of matching relationship all cannot realize low passive intermodulation.
Thus, the present invention is directed to the performance that existing common braid carries out improving to improve PIM, not only the outer conductor of braided coaxial cable 1 is improved, the outer conductor of braided coaxial cable 1 and the connected mode of connector outer conductor 21 are improved simultaneously.Being improved to of the outer conductor of braided coaxial cable 1: thickness is the structure of the individual layer aluminium foil+braid 12 of 20 μm ~ 25 μm, to improve PIM (intermodulation performance) and the mechanical performance of braided coaxial cable 1.Thicken aluminum foil thickness (20 μm ~ 25 μm) when ensureing processing efficiency and improve welding performance, keep the low-loss similar with 50 ohm of original braids and DCR performance, increase mechanical stability and anti-high and low-temp impact, the outer conductor resistance to deformation of braided coaxial cable 1 and fracture property are improved, more easily with tough when being press-fitted with connector 2 and welding.The outer conductor of braided coaxial cable 1 is improved to the connected mode of connector outer conductor 21: weld, and individual layer aluminium foil, braid 12 is welded together with connector outer conductor 21; Or crimping, the dielectric layer 14 of connector outer conductor 21 and braided coaxial cable 1 and individual layer aluminium foil are that the excessive of precision coordinates.Thus obtain desirable significantly low PIM test result and stability (-107dBm).
To sum up, the syndeton of the braided coaxial cable and connector that realize low passive inter-modulation performance of the present invention designs ingenious, simple for structure, can obtain low passive intermodulation, does not increase cost simultaneously, and the application of expansion braid, is suitable for large-scale promotion application.
In this description, the present invention is described with reference to its specific embodiment.But, still can make various amendment and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (4)
1. one kind realizes the braided coaxial cable of low passive inter-modulation performance and the syndeton of connector, comprise braided coaxial cable and connector, described braided coaxial cable has aluminium foil layer and braid, described connector has connector outer conductor, it is characterized in that, described aluminium foil layer is individual layer aluminium foil, the described braided coaxial cable realizing low passive inter-modulation performance and the syndeton of connector also comprise low-temperature lead-free aluminium solder, described aluminium foil layer, described braid and described connector outer conductor are welded together by described low-temperature lead-free aluminium solder, the thickness of described individual layer aluminium foil is 20 μm ~ 25 μm, described welding is 360 ° of welding.
2. according to claim 1ly realize the braided coaxial cable of low passive inter-modulation performance and the syndeton of connector, it is characterized in that, the shape of described low-temperature lead-free aluminium solder is solder stick, weld tabs or weld-ring.
3. according to claim 1ly realize the braided coaxial cable of low passive inter-modulation performance and the syndeton of connector, it is characterized in that, the length of described welding is 8mm ~ 12mm.
4. one kind realizes the braided coaxial cable of low passive inter-modulation performance and the syndeton of connector, comprise braided coaxial cable and connector, described braided coaxial cable has dielectric layer, aluminium foil layer and braid, described connector has connector outer conductor, it is characterized in that, described aluminium foil layer is individual layer aluminium foil, described connector outer conductor is crimped between described aluminium foil layer and described braid, and be accurate interference fits between the described dielectric layer of described connector outer conductor and described braided coaxial cable and described aluminium foil layer, the thickness of described individual layer aluminium foil is 20 μm ~ 25 μm, the maximum interference amount of the interference fits of described precision is 0.05mm, maximal clearance amount is 0.05mm.
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| CN201210048717.4A CN102544784B (en) | 2012-02-28 | 2012-02-28 | Structure for connecting braided coaxial cable and connector to realize low passive inter-modulation performance |
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| CN115684669A (en) * | 2022-10-28 | 2023-02-03 | 珠海汉胜科技股份有限公司 | Coupling structure-based quick test connector for PIM (pulse-independent modulation) test of leaky coaxial cable |
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| CN101486133A (en) * | 2009-02-05 | 2009-07-22 | 深圳市亿铖达工业有限公司 | Lead-free solder for aluminum soft soldering |
| CN201417830Y (en) * | 2009-06-30 | 2010-03-03 | 扬州中广电子有限公司 | Inner liner take-up type coaxial cable connector |
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| CN201549267U (en) * | 2009-11-20 | 2010-08-11 | 浙江都美电缆有限公司 | Super flexible weaved coaxial communication cable |
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| JP2002076029A (en) * | 2000-08-25 | 2002-03-15 | Hitachi Ltd | Solder material and semiconductor device and electronic device using the material |
| CN201682125U (en) * | 2010-05-14 | 2010-12-22 | 苏州宝瑞杰电子有限公司 | Miniature cable connector |
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2012
- 2012-02-28 CN CN201210048717.4A patent/CN102544784B/en not_active Expired - Fee Related
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| US6053769A (en) * | 1998-02-27 | 2000-04-25 | Advanced Mobile Telecommunication Technology Inc. | Coaxial connector |
| CN100361233C (en) * | 2006-01-20 | 2008-01-09 | 鸿硕精密电工（苏州）有限公司 | Improved design of external shield layer of video transmission line |
| CN101244491A (en) * | 2008-03-21 | 2008-08-20 | 天津市青禾科技发展有限公司 | Lead-free solder solder paste for electronic industry and method for manufacturing soldering fluid |
| CN101486133A (en) * | 2009-02-05 | 2009-07-22 | 深圳市亿铖达工业有限公司 | Lead-free solder for aluminum soft soldering |
| CN201417830Y (en) * | 2009-06-30 | 2010-03-03 | 扬州中广电子有限公司 | Inner liner take-up type coaxial cable connector |
| CN101667685A (en) * | 2009-07-09 | 2010-03-10 | 江苏俊知技术有限公司 | Welding type radio frequency coaxial-cable assembly |
| CN201549267U (en) * | 2009-11-20 | 2010-08-11 | 浙江都美电缆有限公司 | Super flexible weaved coaxial communication cable |
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