CN216563525U

CN216563525U - Radiating element for massive MIMO antenna

Info

Publication number: CN216563525U
Application number: CN202123228963.1U
Authority: CN
Inventors: 姚涛; 袁帅; 侯小强; 庾波
Original assignee: Suzhou Dongshan Precision Manufacturing Co Ltd
Current assignee: Suzhou Rf Top Electronic Communications Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-05-17
Anticipated expiration: 2031-12-21

Abstract

A radiation unit for a massive MIMO antenna comprises a radiation body and two network parts, wherein the radiation body comprises a radiation panel and feed columns vertically and fixedly connected to the middle of the radiation panel, even number of the feed columns penetrate out of the bottom surface of the radiation panel and correspondingly form feed points, the two network parts are symmetrically arranged on the bottom surface of the radiation panel, the network parts at least comprise even number of feed end heads and polarization end heads electrically connected with the feed end heads, and the feed end heads are connected with the polarization end heads in parallel. The irradiator in this application is formed by radiation panel and feed post two parts rigid coupling, and radiation panel adopts the panel beating mould punching press to make, and the feed post adopts the mode of barrel plating to electroplate, through the aforesaid must design mode greatly reduced the processing degree of difficulty and electroplate the area, and then reduce cost by a wide margin.

Description

Radiating element for massive MIMO antenna

Technical Field

The utility model belongs to the technical field of base station antennas, and particularly relates to a radiating unit for a massive MIMO antenna.

Background

With the full advent of the 5G everything interconnected age, there is a need for networked devices to exhibit well-jet growth. Under the condition of limited bandwidth, the massive MIMO technology capable of greatly improving the channel capacity is necessarily comprehensively used. This is an urgent need for rapid development of antenna array technology. On the base station side, the 4T4R and 8T8R patterns commonly adopted in 4G era generally have only a dozen or so radiating elements at most. In the coming 5G era, 32T32R or 64T64R is generally adopted, and the number of radiation units is increased to 96 or more. In practical application scenarios, the physical space of the antenna is limited, the volume of the antenna must be strictly controlled, and the antenna array can only use a smaller radiation unit distance. In view of the dramatic increase in the number of radiating elements and the reduction in the radiating element pitch, very serious challenges are posed to the performance and cost of the radiating elements.

In the prior art, a radiating element for a massive MIMO antenna is generally in the form of a microstrip patch, and the main difference is in processing materials and processing modes. At present, two modes of PCB assembly welding or metal plate integral stamping are generally adopted in the industry. The PCB form needs assembly and welding, which leads to complicated working procedures, poor consistency and high cost; the integral stamping form of the metal plate requires whole-body electroplating and the shape of the radiation panel is limited, which results in higher cost and limited performance.

In view of the above, it is necessary to develop a radiation element for a massive MIMO antenna to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a radiating element for a massive MIMO antenna.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a radiation unit for a massive MIMO antenna comprises a radiation body and two network parts, wherein the radiation body comprises a radiation panel and feed columns vertically and fixedly connected to the middle of the radiation panel, even number of the feed columns penetrate out of the bottom surface of the radiation panel and correspondingly form feed points, the two network parts are symmetrically arranged on the bottom surface of the radiation panel, the network parts at least comprise even number of feed end heads and polarization end heads electrically connected with the feed end heads, and the feed end heads are connected with the polarization end heads in parallel.

Further, the feeding terminals in the network element have equal amplitude and opposite phase.

Further, a top projection of a top projection portion of the polarization tip exits the radiation panel.

Furthermore, the feed terminal is electrically connected with the polarization terminal through a lead.

Furthermore, the conducting wire is bent and arranged in a labyrinth shape.

Furthermore, the radiating panel is uniformly provided with a through groove in a penetrating T-shaped groove or other shapes around the feed column.

Furthermore, the edges of the radiation panel are uniformly provided with grooves.

Further, each feeding column is arranged in a rectangular shape or other shapes.

Compared with the prior art, the utility model has the beneficial effects that: firstly, the radiator in the application is formed by fixedly connecting a radiation panel and a feed column, the radiation panel is punched by a sheet metal die, and the feed column is electroplated by adopting a barrel plating mode, so that the processing difficulty and the electroplating area are greatly reduced by the design mode, and the cost is greatly reduced; secondly, the radiation panel in the application adopts a single processing mode, so that a more complex current path can be conveniently designed; in addition, the T-shaped groove in the scheme can improve the electrical performance of the radiation unit on the premise of not increasing the processing cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a radiator in a radiating element for a massive MIMO antenna according to an embodiment of the present invention;

fig. 2 is a schematic bottom structure diagram of a radiator in a radiating element for a massive MIMO antenna according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a network element in a radiation unit for a massive MIMO antenna according to an embodiment of the present invention.

Reference numerals and component parts description referred to in the drawings:

1-a radiator; 11-a radiation panel; a 111-T type groove; 112-a groove; 12-a feed column; 121-feeding point; 2-a network element; 21-a feed terminal; 22-a polarized tip; 23-conducting wire.

Detailed Description

The technical solution of the present invention will be clearly and completely described by the following detailed description. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. 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.

Referring to fig. 1 to 3, a radiating element for a massive MIMO antenna, including radiator 1, two network elements 2, radiator 1 includes radiation panel 11 and feed post 12 of perpendicular rigid coupling in radiation panel 11 middle part, radiator 1 in this application is formed by radiation panel 11 and feed post 12 two parts rigid coupling, radiation panel 11 adopts the stamping of sheet metal mold to make, feed post 12 adopts the mode of barrel plating to electroplate, through the aforesaid get design greatly reduced the processing degree of difficulty and electroplating area, and then by a wide margin reduce cost, radiation panel 11 adopts the mode of independent processing, comparatively complicated current path can convenient design.

It should be borne that even number of feed columns 12 penetrate through the bottom surface of the radiation panel 11 and form feed points 121 correspondingly, specifically, the radiation panel 11 is formed by stamping a metal plate, the radiation panel 11 and the feed columns 12 are connected by riveting, each feed column 12 is arranged in a rectangular shape or other shapes, in this application, four feed points 121 are formed by four feed columns 12 correspondingly, and each feed column 12 is arranged in a square shape. Furthermore, the radiating panel 11 is uniformly provided with through grooves 111 penetrating through the feeding column 121 or through grooves with other shapes in a surrounding manner, the current path optimization index and the electrical performance of the radiating unit can be improved by the design of the T-shaped grooves 111 without increasing the manufacturing cost, and further, the edge of the radiating panel 11 is uniformly provided with grooves 112, so that the further assembly is facilitated.

The two network elements 2 are symmetrically arranged on the bottom surface of the radiation panel 11, the network elements 2 at least comprise an even number of feed terminals 21 and polarization terminals 22 electrically connected with the feed terminals 21, the feed terminals 21 are connected with the polarization terminals 22 in parallel, and preferably, the conducting wires 23 are arranged in a labyrinth-shaped bending manner, the bending manner is not limited to the manner in the application, and the adjustment can be made according to the actual design requirement in the actual circuit design and manufacturing process.

It is borne in that, each feeding end 21 in a single network element 2 has the same amplitude and opposite phase, specifically, in this application, a single network element 2 is provided with two feeding ends 21 and a polarization end 22, so as to form a single-group one-in two-out feeding network, and two outlets of the single-group feeding network are provided with electric outputs having the same amplitude and opposite phase, so as to form a polarization. The two groups of feed networks are correspondingly and electrically connected to each feed point 121 to form a feed network whole with two inlets and four outlets, so that a plus or minus 45-degree dual polarization which is orthogonal to each other is formed.

Preferably, the top projection of the polarized termination 22 passing through the radiation panel 11 prevents interference with the radiation panel 11 when the polarized termination 22 is further connected to an external component, thereby facilitating connection.

Compared with the traditional design mode of the industry, the radiation unit has the advantages that the processing cost and the material cost are reduced, in addition, the radiation unit has the advantages of being wide in frequency band and high in isolation degree, and the purposes of wide frequency band and high isolation degree can be achieved on the premise that the industry standard is met.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A radiation unit for a massive MIMO antenna is characterized by comprising a radiation body and two network parts, wherein the radiation body comprises a radiation panel and feed columns vertically and fixedly connected to the middle of the radiation panel, even number of the feed columns penetrate out of the bottom surface of the radiation panel and correspondingly form feed points, the two network parts are symmetrically arranged on the bottom surface of the radiation panel, each network part at least comprises even number of feed end heads and polarization end heads electrically connected with the feed end heads, and the feed end heads are connected with the polarization end heads in parallel.

2. The radiating element of claim 1, wherein the feed terminals of the network element are of equal amplitude and opposite phase.

3. The radiating element of claim 1, wherein the top projection of the polarization tip protrudes through the top projection of the radiating panel.

4. The radiating element of claim 1, wherein the feeding terminal and the polarization terminal are electrically connected by a conductive wire.

5. The radiating element of a massive MIMO antenna as claimed in claim 4 wherein the conductive wires are arranged in a labyrinth bend.

6. The radiating element of a massive MIMO antenna as claimed in claim 1, wherein the radiating panel is provided with a through T-shaped slot or other through slots around the feed column.

7. The radiating element of claim 1, wherein the edges of the radiating panel are uniformly recessed.

8. The radiating element of a massive MIMO antenna as claimed in claim 1, wherein each of the feeding columns is arranged in a rectangular or other shape.