CN111509342A

CN111509342A - Miniaturized multichannel 5G anti-interference filter

Info

Publication number: CN111509342A
Application number: CN202010474810.6A
Authority: CN
Inventors: 朱磊
Original assignee: Nanjing Sanshi Communication Technology Co ltd
Current assignee: Nanjing Sanshi Communication Technology Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-08-07

Abstract

The invention discloses a miniaturized multichannel 5G anti-interference filter, which relates to the technical field of microwave communication and comprises a first cavity and a second cavity, wherein the first cavity and the second cavity are divided into four chambers by partition plates, resonant columns in the first cavity are in a linear arrangement structure, and can meet index requirements only by 9 stages of resonant columns; after the first cavity and the second cavity are assembled, the capacity expansion capacity of the product is increased, the antenna feeder network with 8 channels can be accessed simultaneously, the volume of the product is reduced, and the space of a base station required by installation is greatly saved; the product has 8 signal input ports and 8 signal output ports, can satisfy the supporting of most base station tower communication equipment, and every tower only needs 1 wave filter of installation can satisfy the requirement.

Description

Miniaturized multichannel 5G anti-interference filter

Technical Field

The invention relates to the technical field of microwave communication, in particular to a miniaturized multi-channel 5G anti-interference filter.

Background

With the coming of the 5G era, the trend of signal transmission of a multi-system fusion common base station is increasingly popularized, and in order to improve the network coverage of mobile communication, improve the communication capability and reduce the resource waste, a plurality of operators select a common base station tower station-sharing construction mode at present to erect respective communication equipment; due to the selection of co-site construction, the frequency bandwidth intervals of the communication equipment of each operator are relatively close, so that the interference of communication signals among the communication equipment is serious, and the communication quality is seriously influenced. In order to reduce interference, the traditional way of reducing interference is to build communication base stations for each operator, and because the relative spatial distance is long, the relative interference capability is small, but this also causes construction waste,

in order to solve the interference problem caused by the shared base station, an anti-interference filter has to be additionally arranged in each base station.

Traditional anti-interference filter belongs to 1 channel form of advancing 1, the product dilatation ability is poor, every wave filter can only form a complete set of antenna feeder system of use, can't form a complete set simultaneously accomplish a plurality of antenna feeder tower communication signal integrations, traditional way is realized for a plurality of anti-interference filter of supporting installation, but the installation space of base station tower is limited, the space that the wave filter installation occupy is big again, its mounting means only holds fixedly for the rod-type, the tower that needs the wall built-up installation some then can't be installed, arrive a great deal of inconvenience for the engineering construction.

Because the topological structure arrangement mode in the cavity of the traditional anti-interference filter is complex, the number of the resonant columns in the cavity is more than 14 or more, and the resonant columns in the cavity are mostly manually assembled; two resonance columns connected with the input port and the output port are mostly welded manually; the traditional anti-interference filter has a large shape and a large volume, and can be installed and fixed on a base station tower only if an installation space which is large enough is needed, and even some base station towers cannot be installed at all; the resonant columns in the cavity are more, the sizes of the resonant columns are also more, the resonant columns are mounted by using an electric screwdriver by a pure hand of a worker, the phenomena of neglected loading and misloading are frequently caused, the production yield is low, and the production efficiency is low.

Because the resonance material that uses is many, and the cost is just high relatively, adopts the mode of manual welding tap resonance post moreover, wastes time and energy, and production efficiency is lower. Because the wave filter is installed on outdoor high tower, traditional wave filter does not install waterproof ventilation valve additional, and under bad weather transfers the piece, the inside atmospheric pressure of product is unbalanced with ambient atmosphere, causes the product index unstable to cause communication signal's unstability.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a miniaturized multichannel 5G anti-interference filter, which solves the problem that a traditional filter cannot be subjected to capacity expansion access to a multichannel antenna feeder communication system, and cannot be installed in a co-building base station, reduces the volume of a product, reduces the number of resonant columns in a cavity, reduces manual assembly of the resonant columns and welding tapping of the resonant columns, increases the communication quality of the product, improves the stability of communication signals, improves the production efficiency, reduces the production cost, and improves the installation mode of the product.

In order to achieve the purpose, the invention provides the following technical scheme: comprises a first cavity and a second cavity, wherein the first cavity and the second cavity are arranged into rectangular structures with cavities in the same size, and adopt a one-step casting and pressing structure, the cavity in the first cavity and the second cavity is divided into four chambers by three clapboards, a resonance passage is arranged in each chamber, two rows of resonance columns are arranged in each chamber in a straight-line arrangement mode, and the two side walls of the first cavity and the second cavity corresponding to each cavity are fixedly provided with an input connector and an output connector, meanwhile, two tap resonance columns are symmetrically arranged in the cavity at positions close to the input connector and the output connector, side holes of the tap resonance columns are formed in the side surfaces of the tap resonance columns, connector guide cores of the input connector and the output connector are fixedly arranged in the side holes of the tap resonance columns, and a coupling reinforcing rib is fixedly connected between each tap resonance column and the adjacent resonance column; the debugging cover plate is arranged on the first cavity and the second cavity in a matched mode, a circle of cover plate fastening screw hole is fixedly formed in the side wall of the first cavity and the side wall of the second cavity, a plurality of threaded holes are formed in the debugging cover plate, a plurality of debugging screw rods and debugging nuts are correspondingly installed in the threaded holes, the debugging cover plate is fixedly installed on the upper surfaces of the first cavity and the second cavity through cover plate fastening screws, cavity fastening screw holes are formed in the side wall of the first cavity, and the second cavity is fixedly installed in the cavity fastening screw holes corresponding to the first cavity through cavity fastening screws.

As a further scheme of the invention: and a first flying rod and a second flying rod which are used for reducing interference signals are respectively arranged between the tapping resonance column and the resonance column of the first cavity and the second cavity.

As a further scheme of the invention: and the bottom of the second cavity is provided with a mounting bracket fastening screw hole, the mounting bracket is fixed in the mounting bracket fastening screw hole through a mounting bracket fastening screw, and the mounting brackets are respectively positioned at two sides of the cavity.

As a further scheme of the invention: the mounting bracket is provided with a V-shaped groove suitable for mounting the holding pole and a universal square hole of the hose clamp belt.

As a further scheme of the invention: two fixing holes suitable for wall-mounted installation are formed in the mounting support.

As a further scheme of the invention: the top of the first cavity is provided with a waterproof silica gel strip, and the side face of the first cavity is fixedly provided with a waterproof ventilation valve for adjusting air pressure.

As a still further scheme of the invention: the number of the resonant columns in each cavity of the first cavity and the second cavity is preferably seven, and the resonant columns are of a direct die-casting structure.

Compared with the prior art, the invention has the beneficial effects that:

1. the resonance column in the cavity adopts a linear arrangement structure, the index requirement can be met only by 9-stage resonance columns, small holes are formed in the side faces of the tap resonance columns connected with the input port and the output port, the inner guide cores of the connectors of the input port and the output port are arranged in the small holes, the length of the inner guide core is formed in one step, and the mode of manually welding the taps is replaced; due to the adoption of a new topological structure, the volume of the cavity is reduced, the number of the resonance columns in the cavity is reduced, the cavity is separated by an upper cover and a lower cover, the cavity can be processed by one set of mould, and each cavity integrates the access of 4 paths of antenna feeder networks and forms an independent unit. After the first cavity and the second cavity are assembled, the capacity expansion capacity of the product is increased, the antenna feeder network with 8 channels can be accessed simultaneously, the volume of the product is reduced, and the space of a base station required by installation is greatly saved; the product has 8 signal input ports and 8 signal output ports, and can meet the matching of most base station tower communication equipment. Each tower can meet the requirements only by installing 1 filter;

2. the cavity body resonance column adopts a direct die-casting molding structure, and manual assembly and welding tapping are not needed, so that communication signals are more stable, the communication quality is improved, the production efficiency is improved, and the production cost is reduced;

3. the first cavity is provided with the waterproof ventilation valve for balancing air pressure, so that the internal air pressure of a product can be adjusted to be balanced with the ambient atmospheric pressure, and the stability of a communication signal of a base station tower is improved; and the second cavity is provided with a mounting bracket, and the pole-holding type mounting and the wall-hanging type mounting can be selected according to the construction condition of the base station tower.

Drawings

Fig. 1 is a schematic view of a structure of a chamber according to the present invention.

Fig. 2 is a schematic structural diagram of a second cavity of the present invention.

Fig. 3 is a schematic view of the cover plate structure of the present invention.

Fig. 4 is a schematic view of the overall structure of the present invention.

Fig. 5 is a top view of the overall structure of the present invention.

Fig. 6 is a side view of the overall structure of the present invention.

As shown in the figure: 1. the device comprises a first cavity, a second cavity, an input connector, a third cavity, an output connector, a fourth cavity, a third cavity, a fourth cavity, a fifth cavity, a sixth cavity, a fifth cavity, a sixth cavity, a fifth cavity, a sixth cavity, a.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, in the embodiment of the present invention, a miniaturized multichannel 5G anti-interference filter includes a first cavity 1 and a second cavity 2, where the first cavity 1 and the second cavity 2 are set to be rectangular structures with cavities of the same size, and a one-step casting structure is adopted, and the cavities inside the first cavity 1 and the second cavity 2 are divided into four cavities by three partition plates, each cavity is provided with a resonant passage, that is, each cavity becomes four independent filters with anti-interference function, and meanwhile, two rows of resonant columns 7 are installed in each cavity in an in-line arrangement manner, and an input connector 2 and an output connector 3 are fixedly installed on two side walls of the first cavity 1 and the second cavity 2 corresponding to each cavity, and two tap resonant columns 6 are symmetrically installed at positions close to the input connector 2 and the output connector 3 in the cavities, a tap resonance column side hole 5 is formed in the side surface of the tap resonance column 6, the connector guide cores 4 of the input connector 2 and the output connector 3 are fixedly arranged in the tap resonance column side hole 5, and a coupling reinforcing rib 10 for enhancing the window coupling amount is arranged between the tap resonance column 6 and the adjacent resonance column 7; the cavity I1 and the cavity II 2 are provided with a debugging cover plate 16 in a matched manner, a circle of cover plate fastening screw hole 13 is fixedly formed in the side walls of the cavity I1 and the cavity II 2, meanwhile, a plurality of threaded holes are formed in the debugging cover plate 16, a plurality of debugging screw rods 17 and debugging nuts 18 are correspondingly installed in the threaded holes, the debugging cover plate 16 after assembly is fixedly installed on the upper surfaces of the cavity I1 and the cavity II 2 through cover plate fastening screws 19, the frequency of each channel is adjusted by adjusting the length of the adjusting screw rods 17 in the inner cavity, meanwhile, the cavity fastening screw hole 12 is formed in the side wall of the cavity I1, and the cavity II 2 is fixedly installed in the cavity fastening screw hole 12 corresponding to the cavity I1 through a.

And a first flying rod 8 and a second flying rod 9 which can reduce interference signals are respectively arranged between the tapping resonance column 5 and the resonance column 7 of the first cavity 1 and the second cavity 2.

The bottom of the second cavity 2 is provided with a mounting bracket fastening screw hole 15, a mounting bracket 21 is fixed in the mounting bracket fastening screw hole 15 through a mounting bracket fastening screw 22, the mounting brackets 21 are respectively located at two sides of the second cavity 2, meanwhile, the mounting bracket 21 is provided with a V-shaped groove 24 suitable for holding pole installation and a general throat hoop square hole 25, and the mounting bracket 21 is also provided with two fixing holes 26 suitable for wall hanging installation.

Preferably, a waterproof silica gel strip is installed at the top of the cavity I1, and a waterproof vent valve 23 for adjusting air pressure is fixedly installed on the side surface of the cavity I1.

According to a preferred embodiment of the present invention, the number of the resonant columns 7 in each of the first cavity 1 and the second cavity 2 is preferably seven, and the resonant columns 7 are formed by direct die-casting, and no manual assembly or welding of taps is required, so that the communication signal is more stable, the communication quality is improved, the production efficiency is improved, and the production cost is reduced.

According to the preferred embodiment provided by the invention, the internal structure of the cavity body adopts an in-line topological structure, reinforcing ribs with coupling bandwidth are added between the resonant columns in the cavity body, side holes are formed in the side surfaces of the resonant columns corresponding to the input port and the output port, and the internal guide cores of the input port connector and the output port connector are arranged in the side holes to form a form equivalent to a welding tap, so that the installation is quicker; simultaneously, the debugging cover plates 16 are respectively installed on the first cavity 1 and the second cavity 2, the frequency modulation capacity of the frequency modulator is adjusted by adjusting the depth of the debugging bolt 17 in the first cavity, the first cavity 1 and the second cavity 2 which are adjusted are finally connected together through the cavity fastening screw 20 to form a whole, the capacity expansion capacity of a product is improved, the communication equipment can be simultaneously connected into 8 channel base station towers, and the practicability of the device is greatly improved.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention without departing from the spirit and scope of the invention.

Claims

1. Miniaturized multichannel 5G antijamming filter, including cavity one (1) and cavity two (2), its characterized in that: the cavity I (1) and the cavity II (2) are set to be rectangular structures with cavities of the same size, a one-time casting molding structure is adopted, the cavities inside the cavity I (1) and the cavity II (2) are divided into four cavities through three partition plates, a resonance passage is arranged in each cavity, two rows of resonance columns (7) are arranged in each cavity in an in-line arrangement mode, an input connector (2) and an output connector (3) are fixedly arranged on two side walls of the cavity I (1) and the cavity II (2) corresponding to each cavity, two tapping resonance columns (6) are symmetrically arranged at positions close to the input connector (2) and the output connector (3) in each cavity, tapping resonance column side holes (5) are formed in the side faces of the tapping resonance columns (6), and connector guide cores (4) of the input connector (2) and the output connector (3) are fixedly arranged in the tapping resonance column side holes (5), meanwhile, a coupling reinforcing rib (10) is fixedly connected between the tap resonance column (6) and the adjacent resonance column (7); the cavity is that cavity one (1) and cavity two (2) are supporting to be provided with debugging apron (16), the fixed round apron fastening screw (13) of having seted up on the lateral wall of cavity one (1) and cavity two (2), a plurality of screw holes have been seted up on debugging apron (16) simultaneously, the downthehole correspondence of screw is installed a plurality of debugging screw rods (17) and debugging nut (18), debugging apron (16) are through apron fastening screw (19) fixed mounting at the upper surface of cavity one (1) and cavity two (2), cavity fastening screw (12) have been seted up on cavity one (1) lateral wall simultaneously, cavity two (2) are through cavity fastening screw (20) fixed mounting in cavity fastening screw (12) that cavity one (1) corresponds.

2. The miniaturized multichannel 5G antijam filter of claim 1, wherein: and a first flying rod (8) and a second flying rod (9) which are used for reducing interference signals are respectively arranged between the tapping resonance column (5) and the resonance column (7) of the first cavity (1) and the second cavity (2).

3. The miniaturized multichannel 5G antijam filter of claim 1, wherein: and the bottom of the second cavity (2) is provided with a mounting bracket fastening screw hole (15), a mounting bracket (21) is fixed in the mounting bracket fastening screw hole (15) through a mounting bracket fastening screw (22), and the mounting bracket (21) is respectively positioned at two sides of the cavity (2).

4. The miniaturized multichannel 5G antijam filter of claim 3, wherein: the mounting bracket (21) is provided with a V-shaped groove (24) suitable for mounting the holding pole and a universal square hole (25) of the hose clamp belt.

5. The miniaturized multichannel 5G antijam filter of claim 3 or 4, wherein: two fixing holes (26) suitable for wall hanging installation are formed in the mounting support (21).

6. The miniaturized multichannel 5G antijam filter of claim 1, wherein: the top of the first cavity (1) is provided with a waterproof silica gel strip, and the side surface of the first cavity (1) is fixedly provided with a waterproof ventilation valve (23) for adjusting air pressure.

7. The miniaturized multichannel 5G antijam filter of claim 1, wherein: the number of the resonant columns (7) in each cavity in the first cavity (1) and the second cavity (2) is preferably seven, and the resonant columns (7) are of a structure formed by direct die-casting.