CN219286065U

CN219286065U - Communication base station precision filter winding load

Info

Publication number: CN219286065U
Application number: CN202320758107.7U
Authority: CN
Inventors: 陆大进; 阮水金; 李帅
Original assignee: Guangdong Joybell Communication Technology Co ltd
Current assignee: Guangdong Joybell Communication Technology Co ltd
Priority date: 2023-04-08
Filing date: 2023-04-08
Publication date: 2023-06-30
Anticipated expiration: 2033-04-08

Abstract

The utility model discloses a winding load of a precision filter of a communication base station, wherein the load 1 comprises a plurality of layers of cable rings which are stacked up and down and fixed together, and each cable ring is formed by tightly winding a cable 6 from inside to outside at one time; the cable 6 comprises an inner conductor 2, an insulating layer 3 and an outer conductor 4; the inner conductor 2 is a silver-plated copper-clad aluminum wire, the insulating layer 3 is a PTFE layer, and the outer conductor 4 is tin-plated copper wire braided dip-plated. Compared with the prior art, the method has the advantages that: the utility model discloses a wire winding load with two sections of radio frequency coaxial cable customization of RG402/RG405, because each item parameter of cable matches well with the other communication equipment impedance of wave filter and basic station, the compact structure form is various, occupation space is few. The method can be installed and used in different application scenes; the RG402/RG405 cable used by the winding load of the patent has a common connection joint with a base station filter and other communication equipment, and the installation matching formula is reliable.

Description

Communication base station precision filter winding load

Technical Field

The utility model relates to the technical field of mobile communication, in particular to a winding load of a precision filter of a communication base station.

Background

In the field of mobile communication, a high-performance load is an indispensable microwave device, and the main function of the load is to absorb redundant radio frequency signal energy so as to ensure good matching of the system. With the emphasis of operators on communication quality, the passive intermodulation index requirements on loads are gradually increased, wherein power and intermodulation are the most important indexes.

The primary function of the wound load is to fully absorb microwave energy from the transmission line, improving the matching performance of the circuit, and the coaxial load is usually connected to the terminal of the circuit, so is also called a terminal load or matching load. The radio frequency coaxial load is widely applied to systems such as radio equipment, electronic instruments, various microwave equipment and the like, and performs impedance matching on an empty standby channel and a test port, so that signal impedance matching is ensured, and meanwhile, signal leakage of the empty port and mutual interference among the systems are greatly reduced.

In the prior art, the low intermodulation load is manufactured by utilizing the attenuation of a radio frequency signal on a coaxial cable, the intermodulation level of the coaxial cable is below-165 dBc, and the load intermodulation is less than-165 dBc on the premise of ensuring the welding process of the cable and a radio frequency connector, so that the low intermodulation load requirement of operators can be met. Meanwhile, in order to meet the heat dissipation requirement, the cable is required to be wound tightly and regularly, the heat dissipation capacity of the cable is improved, and the load is prevented from being burnt due to heat accumulation. And the winding load is manufactured by winding the cable, and the whole market of the winding load is not large and is distributed in a plurality of passive device manufacturers. Therefore, in the prior art, a simple tool is generally used for winding a load, the manufactured base station filter load is a cement resistor, the size is large, the weight is large, a lot of installation space is required to be occupied, the manufactured load adjustment power fluctuation is high in accuracy and low in precision, and the high-frequency communication quality requirement cannot be met.

Disclosure of Invention

The utility model aims to solve the technical problems that the technical difficulties are overcome, and the utility model provides a winding load of a communication base station precise filter, which can solve the problems that the manufactured base station filter load is a cement resistor, has large volume and heavy weight, occupies a lot of installation space, has low precision of the manufactured load adjustment power fluctuation and can not meet the high-frequency communication quality requirement.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

the communication base station precision filter winding load comprises a plurality of layers of cable loops which are stacked up and down and fixed together, wherein each cable loop is formed by tightly winding a cable 6 from inside to outside at one time;

the cable 6 comprises an inner conductor 2, an insulating layer 3 and an outer conductor 4, wherein the insulating layer 3 is wrapped and arranged on the outer wall of the inner conductor 2, and the outer conductor 4 is wrapped and arranged on the outer wall of the insulating layer 3;

the inner conductor 2 is a silver-plated copper-clad aluminum wire, the insulating layer 3 is a PTFE layer, and the outer conductor 4 is tin-plated copper wire braided dip-plated.

As a modification, the width of the load 1 is 116.7+/-1 mm, and the length is 214.7 +/-3 mm.

As an improvement, the cable loop is four layers, and the cable loop is fixed together through four insulating strips 5, and each insulating strip 5 is uniformly distributed along the circumferential direction of the cable loop.

As a modification, the single-layer cable loop is formed by winding a 35m cable 6 into a roll 21, and the shape of the wound cable loop is an annular runway shape. The cable 6 is one of two radio frequency coaxial cables RG402/RG 405.

Compared with the prior art, the utility model has the advantages that:

1. the utility model discloses a wire winding load with two sections of radio frequency coaxial cable customization of RG402/RG405, because each item parameter of cable matches well with the other communication equipment impedance of wave filter and basic station, the compact structure form is various, occupation space is few. Can be installed and used in different application scenes.

2. The original load adjustment power fluctuation is high in accuracy and low in precision, and the high-frequency communication quality requirement cannot be met. The RG402/RG405 radio frequency coaxial cable for the winding load of the patent product has stable materials and structures, can accurately formulate the load matched with the power according to the power of the wave filters of different base stations, realizes the accurate consumption of redundant clutter power which affects the communication quality and is generated in the communication process of the base stations, and ensures good communication.

3. The special forming die is manufactured in the wire winding forming process in a targeted mode, the formed wire winding load is compact in structure, small in size stability deformation, excellent in key electrical performance parameters such as standing waves and third-order intermodulation, and guarantees stable operation of base station communication.

4. The RG402/RG405 radio frequency coaxial cable used for the winding load of the patent is respectively made of silver-plated copper wires, polytetrafluoroethylene (PTFE) insulating medium and tin-plated copper wire braided and tin-plated. The materials have small power loss, excellent environmental performance and wide temperature application range, so that the materials have wide application scenes.

5. The RG402/RG405 cable used by the winding load of the patent has a common connection joint with a base station filter and other communication equipment, and the installation matching formula is reliable.

Drawings

Fig. 1 is a schematic view of the structure of the present utility model in the front view direction.

Fig. 2 is a schematic side view of the present utility model.

Fig. 3 is an enlarged view of the portion a of fig. 2 according to the present utility model.

As shown in the figure: 1. a load; 2. an inner conductor; 3. an insulating layer; 4. an outer conductor; 5. an insulating tape; 6. and (3) a cable.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. In addition, the term "include" and any variations thereof are intended to cover a non-exclusive inclusion.

The present utility model will be described in further detail with reference to the accompanying drawings.

The communication base station precision filter winding load comprises four layers of cable loops which are stacked up and down and fixed together, each cable loop is formed by tightly winding a 35m cable 6 from inside to outside in a one-time mode, and the shape of each cable loop is an annular runway shape (shown in figure 1). The width of the load 1 is 116.7+/-1 mm, the length is 214.7 +/-3 mm, and the load temperature resistance grade is as follows: greater than 150 ℃ (including welding);

the cable 6 is RG405 unsheathed (tin-dipped wire), and the cable 6 comprises an inner conductor 2, an insulating layer 3 and an outer conductor 4, wherein the insulating layer 3 is wrapped and arranged on the outer wall of the inner conductor 2, and the outer conductor 4 is wrapped and arranged on the outer wall of the insulating layer 3. The outer diameter of the inner conductor 2 is 0.52 + -0.02 mm. The wire diameter of the insulating layer 3 is 1.65 plus or minus 0.05mm. The wire diameter of the outer conductor 4 is 2.21 plus or minus 0.05mm;

In particular, the cable loops of each layer are fixed together through four insulating strips 5, and the insulating strips 5 are uniformly distributed along the circumferential direction of the cable loop. The whole load 1 is kept loose by the fixation of the insulating tape 5 without damaging the cable outer conductor 4.

In the practice of the utility model, as shown in fig. 1, the load 1 after the winding is completed, wherein the initial joint of the cable 6 is left, the inner conductor 2 is not in contact with the tin-plated outer conductor 4 (after the outer conductor is cut by 2-5 mm, an insulating cap is added). When integrally packaged, the end cable 6 needs to be wound with the main body portion.

The utility model and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims

1. Communication base station precision filter wire winding load, its characterized in that: the load (1) comprises a plurality of cable loops which are stacked up and down and fixed together, and each cable loop is formed by tightly winding a cable (6) from inside to outside at one time;

the cable (6) comprises an inner conductor (2), an insulating layer (3) and an outer conductor (4), wherein the insulating layer (3) is wrapped and arranged on the outer wall of the inner conductor (2), and the outer conductor (4) is wrapped and arranged on the outer wall of the insulating layer (3);

the inner conductor (2) is a silver-plated copper-clad aluminum wire, the insulating layer (3) is a PTFE layer, and the outer conductor (4) is tin-plated copper wire braided dip-plated.

2. The communications base station precision filter winding load of claim 1, wherein: the cable loop is four layers.

3. The communications base station precision filter winding load of claim 2, wherein: the single-layer cable ring is formed by winding a 35m cable (6) around a roll 21, and the shape of the cable ring is an annular runway shape.

4. The communications base station precision filter winding load of claim 1, wherein: the outer diameter of the inner conductor (2) is 0.52+/-0.02 mm.

5. The communications base station precision filter winding load of claim 1, wherein: the wire diameter of the insulating layer (3) is 1.65+/-0.05 mm.

6. The communications base station precision filter winding load of claim 1, wherein: the wire diameter of the outer conductor (4) is 2.21+/-0.05 mm.

7. The communications base station precision filter winding load of claim 1, wherein: the width of the load (1) is 116.7+/-1 mm, and the length is 214.7 +/-3 mm.

8. The communications base station precision filter winding load of claim 1, wherein: the cable rings of all layers are fixed together through four insulating belts (5), and the insulating belts (5) are uniformly distributed along the circumferential direction of the cable rings.