CN111403891A - Antenna system integrated on nodular cast iron well lid - Google Patents

Abstract

The invention discloses an antenna system integrated in a ductile iron manhole cover, comprising a ductile iron manhole cover body and an antenna group, a hollow window is opened on the front of the ductile iron manhole cover body, and an antenna group mounting hole is arranged on the back of the ductile iron manhole cover body. The antenna group is fixedly connected to the main body of the ductile iron manhole cover through the antenna group installation hole. The device integrates the antenna and the main body of the ductile iron manhole cover, and effectively solves the problem of wireless signal radiation while ensuring that the strength of the manhole cover does not decrease, making it possible for the manhole cover to serve as the carrier of the 5G base station.

Description

An antenna system integrated in a ductile iron manhole cover

technical field

The invention relates to the technical field of antennas, in particular to an antenna system integrated in a ductile iron manhole cover.

Background technique

At present, mobile communication has developed into the 5G era. Due to the increase in frequency, the space loss of the electromagnetic field increases and the penetration ability is weakened. Higher-density base stations are required to achieve continuous coverage. People familiar with mobile communication know that the current operator's station Site resources are very scarce. The future 5G network will use all available site resources. Manhole covers are a very good existing site resource. Once used reasonably, it can greatly alleviate the extreme scarcity of 5G base station site resources. contradiction. However, in today's industry, composite (non-metal) manhole covers are generally used to integrate antennas inside. Although this can solve the problem of antenna radiation, the compressive performance of composite manhole covers is still far from that of traditional ductile iron manhole covers, which cannot be more common. adoption.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an antenna system integrated in a ductile iron manhole cover to solve the above-mentioned problems in the background art. In order to achieve the above purpose, the present invention provides the following technical solutions: an antenna system integrated in a ductile iron manhole cover, comprising a ductile iron manhole cover main body and an antenna group, the front of the ductile iron manhole cover main body is provided with a hollow window, and the ductile iron manhole cover main body is provided with a hollow window. An antenna group mounting hole is arranged on the back, and the antenna group is fixedly connected to the main body of the ductile iron manhole cover through the antenna group mounting hole;

The antenna group includes several radiating antennas, a mounting plate and a power divider, the power divider is electrically connected to the radiating antenna, the several radiating antennas are distributed in an array, and the radiating antenna and the power divider are respectively fixed on the On the front and back of the installation plate, the power divider is reserved with an interface for connecting with external equipment, and the installation plate is fixed on the main body of the ductile iron manhole cover.

Preferably, the radiating antenna includes a plastic casing and a radiator, the radiator is installed inside the plastic casing, the plastic casing can be filled into the hollow window, the radiator is similar to a T-shaped structure, and the radiator It includes a radiating surface, a feeding point, a supporting body and a grounding surface. The bottom of the radiating surface is connected to the supporting body, and the bottom of the supporting body is connected to the grounding surface. The feeding point is located at the bottom of the radiating surface and does not contact the grounding surface.

Preferably, the power divider includes a casing, a joint mounting plate and a power division network, the power division network is installed inside the casing, and both ends of the casing are installed and fixed through the joint mounting plate, and the power division network is installed on the power divider network. Lines are distributed, the lines are provided with a branch feeder outlet and a main feeder outlet, the branch feeder outlet is electrically connected with the feeding point of the radiating antenna, and the main feeder outlet is connected to external equipment.

Preferably, the number of the hollow windows can be increased or decreased according to actual application scenarios, and the shapes of the hollow windows can be square, rectangular, circular, and other polygonal structures. The side lengths of the square and rectangular hollow windows are usually taken as The working frequency of the antenna corresponds to 0.5-1 times the wavelength, and the diameter of the hollow window of the circular or other regular polygonal structure is 0.5-1 times the wavelength corresponding to the working frequency of the antenna.

The technical effects and advantages of the present invention: the device integrates the antenna and the main body of the ductile iron manhole cover, and effectively solves the problem of wireless signal radiation while ensuring that the strength of the manhole cover does not decrease, making it possible for the manhole cover to serve as the carrier of the 5G base station ; Each component is assembled into a whole, inserted and taken out from under the manhole cover, on the one hand, it reduces the difficulty of the construction and maintenance process of the manhole cover, and on the other hand, it has the anti-theft function; the array is formed with multiple radiation units, which can be compatible with multiple systems, such as simultaneous It supports 5G and WIFI, and the working mode of the antenna can also be flexibly configured, for example, it can support 2T2R, 4T4R, 8T8R and other working modes.

Description of drawings

Fig. 1 is the front schematic diagram of the present invention;

Fig. 2 is the back schematic diagram of the present invention;

Fig. 3 is the frontal schematic diagram of the ductile iron manhole cover main body of the present invention;

4 is a schematic diagram of the back side of the main body of the ductile iron manhole cover of the present invention;

Fig. 5 is the front schematic diagram of the antenna group of the present invention;

6 is a schematic diagram of the back of the antenna group of the present invention;

7 is a schematic structural diagram of a radiation antenna of the present invention;

8 is an exploded view of a power divider of the present invention;

In the picture: 1-ductile iron manhole cover body, 2-antenna group, 3-hollow window, 4-antenna group mounting hole, 5-radiating antenna, 6-installation plate, 7-power divider, 51-plastic shell, 52- Radiator, 53-radiating surface, 54-feeding point, 55-support body, 56-ground plane, 71-shell, 72-connector mounting plate, 73-power division network, 74-line, 75-split feeder outlet , 76 - Main feeder outlet.

Detailed ways

In order to make the technical means, creation features, goals and effects of the present invention easy to understand, the present invention will be further described below in conjunction with the specific figures. In the description of the present invention, it should be noted that unless otherwise specified and Definition, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, an integral connection or a mechanical connection, or an electrical connection; Direct connection, indirect connection through intermediate media, internal communication between two components.

Example 1

As shown in FIG. 1-FIG. 6, an antenna system integrated in a ductile iron manhole cover includes a ductile iron manhole cover body 1 and an antenna group 2. The ductile iron manhole cover body 1 is provided with a hollow window 3 on the front side. The ductile iron manhole cover An antenna group mounting hole 4 is provided on the back of the main body 1, and the antenna group 2 is fixed on the ductile iron manhole cover main body 1 through the antenna group mounting hole 4;

The antenna group 2 includes several radiating antennas 5, a mounting plate 6 and a power divider 7, the power divider 7 is electrically connected to the radiating antenna 5, and the several radiating antennas 5 are arranged in an array for distribution, and the radiating antennas 5 and the power divider 7 are respectively fixed on the front and back of the mounting plate 6, the power divider 7 is reserved with an interface for connecting with external equipment, and the mounting plate 6 is fixed on the ductile iron manhole cover main body 1.

Example 2

As shown in FIG. 1-FIG. 8, an antenna system integrated in a ductile iron manhole cover includes a ductile iron manhole cover body 1 and an antenna group 2. The ductile iron manhole cover body 1 is provided with a hollow window 3 on the front side. The ductile iron manhole cover An antenna group mounting hole 4 is provided on the back of the main body 1, and the antenna group 2 is fixed on the ductile iron manhole cover main body 1 through the antenna group mounting hole 4;

The antenna group 2 includes several radiating antennas 5, a mounting plate 6 and a power divider 7, the power divider 7 is electrically connected to the radiating antenna 5, and the several radiating antennas 5 are arranged in an array for distribution, and the radiating antennas 5 and the power divider 7 are respectively fixed on the front and back of the mounting plate 6, the power divider 7 is reserved with an interface for connecting with external equipment, and the mounting plate 6 is fixed on the ductile iron manhole cover main body 1.

Preferably, the radiation antenna 5 includes a plastic casing 51 and a radiator 52, the radiator 52 is installed inside the plastic casing 51, the plastic casing 51 can be filled into the hollow window 3, and the radiator 52 is similar to T The radiator 52 includes a radiating surface 53, a feeding point 54, a supporting body 55 and a grounding surface 56, the bottom of the radiating surface 53 is connected to the supporting body 55, and the bottom of the supporting body 55 is connected to the grounding surface 56, so The feeding point 54 is located at the bottom of the radiation surface 53 and is not in contact with the ground surface 56 .

Preferably, the power divider 7 includes a casing 71 , a joint mounting plate 72 and a power dividing network 73 , the power dividing network 73 is installed inside the casing 71 , and both ends of the casing 71 are installed through the joint mounting plate 72 . Fixed, the power division network 73 is provided with a line 74, the line 74 is provided with a branch feeder outlet 75 and a main feeder outlet 76, and the branch feeder outlet 75 is electrically connected to the feeding point 54 of the radiating antenna 5, so The main feeder outlet 76 is connected to external equipment.

Preferably, the number of the hollow windows 3 can be increased or decreased according to actual application scenarios, and the shapes of the hollow windows 3 can be square, rectangular, circular, and other polygonal structures. The length is usually 0.5-1 times the wavelength corresponding to the working frequency of the antenna, and the diameter of the hollow window 3 of the circular or other regular polygonal structure is 0.5-1 times the wavelength corresponding to the working frequency of the antenna.

The technological process and working principle of the present invention are as follows: the radiation antenna 5 and the power divider 7 are installed on the front and back of the mounting plate 6, and then the mounting plate 6 is fixed on the ductile iron manhole cover main body 1 through the antenna group mounting hole 4. At this time, the radiation The antenna 5 is located inside the hollow window 3, which realizes the integrated design of the antenna group 2 and the ductile iron manhole cover body 1, and effectively solves the problem of wireless signal radiation without reducing the strength of the ductile iron manhole cover body 1, making the manhole cover as a 5G The carrier of the base station becomes possible.

Finally, it should be noted that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the The technical solutions recorded in the foregoing embodiments can be modified, or some technical features thereof can be equivalently replaced, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included. within the protection scope of the present invention.

Claims (4)

1. The utility model provides an integrated antenna system in nodular cast iron well lid, includes nodular cast iron well lid main part and antenna stack, its characterized in that: the front surface of the nodular cast iron well lid main body is provided with a hollow window, the back surface of the nodular cast iron well lid main body is provided with an antenna group mounting hole, and the antenna group is fixedly connected with the nodular cast iron well lid main body through the antenna group mounting hole;

the antenna group comprises a plurality of radiation antennas, a mounting plate and a power divider, the power divider is electrically connected with the radiation antennas, the plurality of radiation antennas are distributed in an array mode, the radiation antennas and the power divider are fixed on the front side and the back side of the mounting plate respectively, an interface connected with external equipment is reserved on the power divider, and the mounting plate is fixed on the nodular cast iron well cover main body.

2. The antenna system integrated on the nodular cast iron well lid as claimed in claim 1, wherein: the radiating antenna comprises a plastic shell and a radiating body, wherein the radiating body is installed inside the plastic shell, the plastic shell can be filled into the hollow window, the radiating body is similar to a T-shaped structure, the radiating body comprises a radiating surface, a feed point, a supporting body and a ground plane, the bottom of the radiating surface is connected with the supporting body, the bottom of the supporting body is connected with the ground plane, and the feed point is located at the bottom of the radiating surface and is not in contact with the ground plane.

3. The antenna system integrated on the nodular cast iron well lid as claimed in claim 2, wherein: the ware is divided to merit includes casing, joint mounting panel and merit and divides the network, the merit is divided the network and is installed inside the casing, the casing both ends are fixed through the joint mounting panel installation, cloth has the circuit on the merit divides the network, be equipped with branch feeder export and main feeder export on the circuit, divide feeder export and radiation antenna's feed point electricity to be connected, main feeder export docks with external equipment.

4. The antenna system integrated on a nodular cast iron well cover according to any one of claims 1 or 3, wherein: the number of the hollow windows can be increased or reduced according to practical application scenes, the hollow windows can be in square, rectangular, circular and other polygonal structures, the side length of the square and rectangular hollow windows is usually 0.5-1 time of the wavelength corresponding to the working frequency of the antenna, and the diameter of the hollow windows in the circular or other regular polygonal structures is 0.5-1 time of the wavelength corresponding to the working frequency of the antenna.

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