CN209993794U

CN209993794U - N-type high intermodulation radio frequency coaxial cable assembly

Info

Publication number: CN209993794U
Application number: CN201920459648.3U
Authority: CN
Inventors: 许伟
Original assignee: Jiangsu Huaxing Communication Technology Co Ltd
Current assignee: Jiangsu Huaxing Communication Technology Co Ltd
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2020-01-24
Anticipated expiration: 2029-04-04

Abstract

The utility model discloses a coaxial cable assembly of high intermodulation radio frequency of N type. It includes the shell body, the center conductor and install the insulator between shell body and center conductor, the front end of shell body is provided with the link that is used for installing the cable, the grafting end of cable exposes weaving layer and inner conductor after peeling off, the cavity internal diameter of link is greater than the external diameter of cable and can makes the cable pass the rear of shell body from the link, the weaving layer cover of cable has can be connected inner conductor and center conductor from the rear that passes the shell body in the cavity of link behind the outer conductor, inner conductor can make outer conductor fixed mounting in the cavity of link after being connected with the center conductor. After adopting foretell structure, not only guaranteed the welding reliability, provided the guarantee for whole antenna system, overall structure is very stable moreover, has guaranteed communication performance, has satisfied antenna system's intermodulation requirement, and its overall structure design is simple, and manufacturing cost is very low, has fine market using value.

Description

N-type high intermodulation radio frequency coaxial cable assembly

Technical Field

The utility model relates to a radio frequency coaxial line cable subassembly, specific N type high intermodulation radio frequency coaxial line cable subassembly that says so.

Background

The N-type radio frequency coaxial cable assembly is used as an essential component in an antenna system, and the quality of the N-type radio frequency coaxial cable assembly directly influences the quality of the whole antenna system; with the continuous development of the communication industry, the requirements on the communication system are higher and higher, and simultaneously, higher requirements are also provided for a radio frequency coaxial cable assembly arranged on an antenna system, a general N-type radio frequency coaxial cable assembly comprises a shell, an insulator, an inner conductor and a radio frequency coaxial cable, under the condition that the intermodulation index of the N-type radio frequency coaxial cable assembly is met by materials and electroplating, welding is a decisive factor, the existing N-type radio frequency coaxial cable assembly can meet the requirements of a common antenna system, however, with the continuous development of the communication industry, the intermodulation requirement of some antenna systems needs to reach-117 dBm, the conventional N-type radio frequency coaxial cable assembly can only reach-110 dBm to-112 dBm due to the influence of the structure and welding, and the intermodulation requirement of the antenna system is difficult to meet; if the DIN type radio frequency coaxial cable assembly is replaced, although the requirement of the system can be met, the cost can be increased by many times.

Disclosure of Invention

The utility model discloses improve to above problem, provide a stable in structure, the superior performance, the high intermodulation radio frequency coaxial cable subassembly of N type that intermodulation can be high.

In order to solve the technical problem, the utility model discloses a high intermodulation radio frequency coaxial cable subassembly of N type, which comprises an outer shell, center conductor and install the insulator between shell body and center conductor, the front end of shell body is provided with the link that is used for installing the cable, the grafting end of cable exposes weaving layer and inner conductor after peeling off, the cavity internal diameter of link is greater than the external diameter of cable and can make the cable pass the rear of shell body from the link, the weaving layer cover of cable has the rear that can pass the shell body behind the outer conductor in the cavity of link to be connected inner conductor and center conductor, can make outer conductor fixed mounting in the cavity of link after inner conductor is connected with center conductor.

An insulating gasket capable of being pressed on the front end face of the braided layer is further arranged in the cavity of the connecting end, and the inner conductor of the cable penetrates through the insulating gasket to be connected with the central conductor.

The cable can pass through the rear outer side of the shell and be welded with the central conductor.

The outer conductor has the step hole, the braiding layer that can pass the cable in the large diameter section in step hole carries on spacingly to the braiding layer, the little diameter section in step hole can make the inner conductor pass and be connected with central conductor.

And the outer conductor is welded and fixed with the connecting end and the braiding layer.

Be provided with the frustum structure of salient in the central conductor surface between central conductor and the insulator, the surface of frustum structure is provided with the knurl, the inner chamber surface of shell body is provided with the barb that can pierce in the insulator.

After adopting foretell structure, because the outer conductor that can pass the rear of shell body in the cavity of link and with the cooperation of the layer of weaving insulating pad and adopt welded structure at the link that the layer cover of weaving of cable was established, wear out the shell body through center conductor and inner conductor from this and weld and carry out welded fastening's mode again after the welding is accomplished, not only guaranteed the welding reliability, guarantee for whole antenna system, overall structure is very stable moreover, communication performance has been guaranteed, antenna system's intermodulation requirement has been satisfied, its overall structure design is simple, manufacturing cost is very low, has fine market using value.

Drawings

Fig. 1 is a schematic structural view of an installation state of the N-type high intermodulation radio frequency coaxial cable assembly of the present invention;

fig. 2 is the utility model discloses the high intermodulation radio frequency coaxial cable subassembly of N type treats installation state structure sketch map.

Detailed Description

The following describes the N-type high intermodulation rf coaxial cable assembly in further detail with reference to the accompanying drawings and the detailed description.

As shown in the figure, the N-type high intermodulation radio frequency coaxial cable assembly of the utility model comprises an outer shell 1, a central conductor 2 and an insulator 3 arranged between the outer shell and the central conductor, the front end of the outer shell 1 is provided with a connecting end 5 for installing a cable 4, the splicing end of the cable 4 is stripped to expose a braiding layer 9 and an inner conductor 7, the inner diameter of the cavity of the connecting end 5 is larger than the outer diameter of the cable 4 and can enable the cable to pass through the rear part of the outer shell 1 from the connecting end, the braiding layer of the cable 4 is sleeved with an outer conductor 6 and then can pass through the outer side of the rear part of the outer shell 1 from the cavity of the connecting end to be welded with the central conductor, the outer conductor can be fixedly arranged in the cavity of the connecting end after being welded with the central conductor, in addition, the rear end of the outer conductor is provided with, the gap is reserved with a solder filling space during welding, welding reliability is guaranteed, the outer conductor 6, the connecting end 5 and the braiding layer 9 are fixedly welded, during installation, the central conductor 2 is installed in the insulator 3, the insulating gasket 8 and the outer conductor 6 are installed in the radio frequency coaxial cable 4, the installed radio frequency coaxial cable 4 penetrates through the outer shell 1 to be welded with the central conductor 2, and the welded central conductor 2 is welded after being pressed into the outer shell 1.

Furthermore, an insulating gasket 8 which can be pressed on the front end face of the braiding layer is arranged in the cavity of the connecting end 5, an inner conductor 7 of the cable 4 penetrates through the insulating gasket to be connected with the central conductor, the insulating gasket is pressed on the front end face of the outer conductor, the outer conductor 6 is provided with a step hole, the braiding layer of the cable can penetrate through the large-diameter section of the step hole to limit the braiding layer, the inner conductor can penetrate through the small-diameter section of the step hole to be connected with the central conductor, in addition, a frustum structure protruding out of the outer surface of the central conductor is arranged between the central conductor 2 and the insulator 3, the surface of the frustum structure is provided with knurls, barbs capable of penetrating into the insulator 3 are arranged on the surface of an inner cavity of the outer shell 1, the effects of preventing rotation and axial displacement can be achieved, the frustum structure and the barbs are matched and then are pressed into the outer shell together through a tool, and the coaxiality of all parts is guaranteed.

Claims

1. An N type high intermodulation radio frequency coaxial cable assembly, includes shell body (1), center conductor (2) and installs insulator (3) between shell body and center conductor, its characterized in that: the front end of shell body (1) is provided with link (5) that are used for installing cable (4), the grafting end of cable (4) exposes weaving layer (9) and inner conductor (7) after peeling off, the cavity internal diameter of link (5) is greater than the external diameter of cable (4) and can make the cable pass the rear of shell body (1) from the link, the weaving layer cover of cable (4) has outer conductor (6) back can be followed the cavity of link and passed the rear of shell body (1) and be connected inner conductor and central conductor, can make outer conductor fixed mounting in the cavity of link after inner conductor is connected with the central conductor.

2. The N-type high intermodulation radio frequency coaxial cable assembly of claim 1, wherein: an insulating gasket (8) capable of being pressed on the front end face of the braided layer is further arranged in the cavity of the connecting end (5), and an inner conductor (7) of the cable (4) penetrates through the insulating gasket to be connected with the central conductor.

3. The N-type high intermodulation radio frequency coaxial cable assembly of claim 1 or 2, wherein: the cable (4) can penetrate through the outer side of the rear part of the shell and be welded with the central conductor.

4. The N-type high intermodulation radio frequency coaxial cable assembly of claim 3, wherein: outer conductor (6) have the step hole, the layer of knitting that can pass the cable in the large diameter section in step hole carries on spacingly to the layer of knitting, the little diameter section in step hole can make the inner conductor pass and be connected with central conductor.

5. The N-type high intermodulation radio frequency coaxial cable assembly of claim 1, 2 or 4, wherein: the outer conductor (6) is welded and fixed with the connecting end (5) and the braiding layer (9).

6. The N-type high intermodulation radio frequency coaxial cable assembly of claim 5, wherein: be provided with the frustum structure of salient in the central conductor surface between central conductor (2) and insulator (3), the surface of frustum structure is provided with the knurl, the inner chamber surface of shell body (1) is provided with the barb that can pierce in insulator (3).