WO2021243810A1

WO2021243810A1 - Antenna system and communication device

Info

Publication number: WO2021243810A1
Application number: PCT/CN2020/101765
Authority: WO
Inventors: 李明儒; 徐存伟; 胡晨浩; 黄平娥
Original assignee: 摩比天线技术（深圳）有限公司; 摩比科技（深圳）有限公司; 摩比通讯技术（吉安）有限公司; 摩比科技(西安)有限公司; 深圳市晟煜智慧网络科技有限公司; 西安摩比天线技术工程有限公司
Priority date: 2020-06-04
Filing date: 2020-07-14
Publication date: 2021-12-09
Also published as: CN111525241A

Abstract

The present invention relates to the technical field of smart antennas. Provided are an antenna system and a communication device. The antenna system comprises a reflecting plate, and at least one high-frequency radiation unit and at least one low-frequency radiation unit provided on the reflecting plate, wherein the at least one high-frequency radiation unit and the at least one low-frequency radiation unit are arranged on the reflecting plate in a preset arrangement manner; and a hole is formed in a position, corresponding to the high-frequency radiation unit, on the reflecting plate for isolating the high-frequency radiation unit. The antenna system and the communication device provided by the present invention can effectively isolate and filter the high-frequency radiation unit by forming the hole in the position corresponding to the high-frequency radiation unit, thereby reducing the influence of the high-frequency radiation unit on a radiation pattern of the low-frequency radiation unit, thus promoting the overall performance of the antenna system.

Description

Antenna system and communication equipment

Cross-references to related applications

This disclosure claims the priority of the Chinese patent application with the application number CN202010502281.6 and titled "Antenna System and Communication Equipment" filed with the Chinese Patent Office on June 4, 2020, the entire content of which is incorporated into this disclosure by reference.

Technical field

The present disclosure relates to the technical field of smart antennas, and in particular to an antenna system and communication equipment.

Background technique

With the improvement of the global communication field, mobile communication systems usually coexist with multiple standards. For example, 2G, 3G, and 4G coexist. In the future, they will coexist with 5G. In order to reduce the cost of network construction and operation and maintenance, various operators have long-term Considering the evolvability of the network in the later period, higher requirements are put forward for the broadbandization, miniaturization and multi-standard of the antenna. It is required that an antenna can meet more network standards and cover all existing and future mobile communications that may be used. Frequency band, and the antenna size is required to be small in order to facilitate the site selection of the base station and save space resources. Therefore, it is necessary to research on multi-frequency, broadband and miniaturized base station antenna technology.

The traditional method to achieve antenna integration is structure stacking and assembly, that is, antennas of different frequency bands and different columns of the same frequency are realized by splicing left and right or splicing up and down. However, no matter which splicing method is adopted, it will increase the size of the antenna. Construction is difficult and costly; the other is to use a more mature high and low frequency coaxial scheme, but the unit spacing of the coaxial scheme cannot be combined at will, and the size of the coaxial array cannot be further reduced, especially in TDD (Time Division Dual) (工)+FDD (Frequency Division Duplexing, Frequency Division Duplexing) multi-system integrated antenna, the coaxial scheme is almost impossible to achieve.

In recent years, radiating elements like positive cross and X-shaped radiating elements have gradually been used in base station antennas. Such radiating elements can achieve flexible arrays and easy to achieve multi-antenna integration. However, due to the performance interference of radiating elements in different frequency bands, the pattern is seriously deformed. , The isolation is poor, which leads to a decrease in the performance of the antenna network.

Summary of the invention

In view of this, the purpose of the present disclosure is to provide an antenna system and a communication device to alleviate the above technical problems.

In a first aspect, an embodiment of the present disclosure provides an antenna system, including: a reflector, and at least one high-frequency radiation unit and at least one low-frequency radiation unit arranged on the reflector; wherein, at least one high-frequency radiation The unit and the at least one low-frequency radiation unit are arranged on the reflector in a preset arrangement; the reflector is provided with an opening at a position corresponding to the high-frequency radiation unit, so as to protect the high-frequency radiation unit. Isolate.

Preferably, in a preferred embodiment, the shape of the opening corresponding to the high-frequency radiation unit is one of the following shapes: a circle, a square, or a polygon.

Preferably, in a preferred embodiment, the size of the opening corresponding to the high-frequency radiation unit matches the size of the balun of the high-frequency radiation unit.

Preferably, in a preferred embodiment, the low-frequency radiation unit includes a first radiation vibrator, and the low-frequency radiation arm of the first radiation vibrator divides the reflector into a plurality of regions; the high-frequency radiation unit It includes a second radiating vibrator, and the second radiating vibrator is distributed in a plurality of the regions divided by the low-frequency radiation arm of the first radiating vibrator on the reflector.

Preferably, in a preferred embodiment, the above-mentioned first radiating vibrator is a cross vibrator, or an "X"-shaped vibrator.

Preferably, in a preferred embodiment, the second radiation vibrator includes a high-frequency radiation arm, a high-frequency vibrator feed piece fixedly connected to the high-frequency radiation arm, and a high-frequency radiation arm configured to mount the high-frequency radiation arm. The first fixing member; the high-frequency radiation arm is fixed on the reflector through the first fixing member.

Preferably, in a preferred embodiment, the above-mentioned first radiating vibrator includes the low-frequency radiating arm and a second fixing member for mounting the low-frequency radiating arm; the low-frequency radiating arm is fixed by the second fixing member On the reflector.

Preferably, in a preferred embodiment, the working frequency band of the aforementioned low-frequency radiation unit is 698MHz-960MHz.

Preferably, in a preferred embodiment, the working frequency band of the above-mentioned high-frequency radiation unit is 1710MHz-2690MHz.

In a second aspect, the embodiments of the present disclosure also provide a communication device configured with the antenna system described in the first aspect.

The embodiments of the present disclosure bring the following beneficial effects:

The antenna system and communication equipment provided by the embodiments of the present disclosure include: a reflector, and at least one high-frequency radiation unit and at least one low-frequency radiation unit arranged on the reflector; wherein, at least one high-frequency radiation unit and at least one The low-frequency radiation units are arranged on the reflector in a preset arrangement; and the reflector is provided with openings at positions corresponding to the high-frequency radiation units to isolate the high-frequency radiation units. The corresponding position opening method can effectively isolate and filter the high-frequency radiating unit, reduce the influence of the high-frequency radiating unit on the radiation pattern of the low-frequency radiating unit, thereby improving the overall performance of the antenna system.

Other features and advantages of the present disclosure will be described in the following description, and partly become obvious from the description, or understood by implementing the present disclosure. The objectives and other advantages of the present disclosure are realized and obtained by the structures specifically pointed out in the specification, claims and drawings.

In order to make the above-mentioned objectives, features and advantages of the present disclosure more obvious and understandable, preferred embodiments accompanied with accompanying drawings are described in detail as follows.

Description of the drawings

In order to more clearly explain the specific embodiments of the present disclosure or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the specific embodiments or the description of the prior art. Obviously, the appendix in the following description The drawings are some embodiments of the present disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of an antenna system provided by an embodiment of the disclosure;

2 is a schematic structural diagram of another antenna system provided by an embodiment of the disclosure;

FIG. 3 is a schematic structural diagram of another antenna system provided by an embodiment of the disclosure;

4 is a schematic structural diagram of another antenna system provided by an embodiment of the disclosure;

FIG. 5 is a schematic structural diagram of a second radiating vibrator provided by an embodiment of the disclosure;

6 is a schematic structural diagram of a first radiating vibrator provided by an embodiment of the disclosure;

FIG. 7 is a low-frequency pattern according to an embodiment of the disclosure;

FIG. 8 is another low-frequency pattern provided by an embodiment of the disclosure.

Icon: 101-reflector; 102-high-frequency radiation unit; 103-low-frequency radiation unit; 201-opening; 202-fixed part; 501-high-frequency radiation arm; 502-high-frequency vibrator feeder plate; 502a-fixed plastic Pieces; 503-first fixing piece; 601-low-frequency radiation arm; 602a-radiation arm fixing bracket; 602b-fixed base.

detailed description

In order to make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the present disclosure will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, but not all of them.的实施例。 Example. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of the present disclosure.

At present, in the existing base station array antennas, it is often necessary to install the high-frequency radiation unit and the low-frequency radiation unit together on a reflector, and the distance between the two is relatively short. Under this layout, it is easy to produce between the high and low frequency radiation units. Mutual coupling results in distortion of the low-frequency pattern and deterioration of port isolation. Based on this, an antenna system and a communication device provided by embodiments of the present disclosure can alleviate the above-mentioned technical problems.

In order to facilitate the understanding of this embodiment, an antenna system disclosed in the embodiment of the present disclosure is first introduced in detail.

In a possible implementation manner, an embodiment of the present disclosure provides an antenna system, including: a reflector, and at least one high-frequency radiation unit and at least one low-frequency radiation unit arranged on the reflector;

Wherein, at least one high-frequency radiation unit and at least one low-frequency radiation unit are arranged on the reflector according to a preset arrangement;

An opening is provided at the position corresponding to the high-frequency radiation unit on the reflector to isolate the high-frequency radiation unit. This open-hole isolation method can insulate the high-frequency radiation unit from the reflector, and achieve the effect of reducing the coupling between the high and low frequency oscillators.

Therefore, the antenna system provided by the embodiments of the present disclosure includes: a reflector, and at least one high-frequency radiation unit and at least one low-frequency radiation unit arranged on the reflector; wherein, at least one high-frequency radiation unit and at least one low-frequency radiation unit The radiation units are arranged on the reflector in a preset arrangement; and the reflector is provided with openings at positions corresponding to the high-frequency radiation units to isolate the high-frequency radiation units. The method of opening holes in the position can effectively isolate and filter the high-frequency radiation unit, reduce the influence of the high-frequency radiation unit on the radiation pattern of the low-frequency radiation unit, thereby improving the overall performance of the antenna system.

For ease of understanding, FIG. 1 shows a schematic structural diagram of an antenna system. As shown in FIG. 1, it includes a reflector 101, a high-frequency radiation unit 102 and a low-frequency radiation unit 103. The structure shown in FIG. 1 is an antenna system. The top view of FIG. 1, and in FIG. 1, a low-frequency radiating unit and 4 high-frequency radiating units are taken as an example for description. That is, the number of high-frequency radiation units is 4, the number of low-frequency radiation units is one, and the low-frequency radiation unit is centrally arranged on the reflector; the high-frequency radiation unit is interspersedly arranged between the low-frequency radiation arms of the low-frequency radiation unit.

It can be seen from FIG. 1 that the high-frequency radiation unit 102 and the low-frequency radiation unit 103 are arranged on the reflector 101 according to a preset arrangement. In FIG. 1, the low-frequency radiation unit is nested in 4 high-frequency radiation units. The high-frequency radiation unit 102 and the low-frequency radiation unit 103 are both fixed on the reflector plate. The openings provided at the position corresponding to the high-frequency radiation unit on the reflector plate can align the high-frequency radiation unit Isolate.

Further, the shape of the opening corresponding to the high-frequency radiation unit is one of the following shapes: a circle, a square, or a polygon. In actual use, the size of the opening corresponding to the high-frequency radiation unit is generally matched with the size of the balun of the high-frequency radiation unit, for example, the size of the balun projection of the high-frequency radiation unit is equivalent or slightly larger.

For ease of understanding, FIG. 2 shows a schematic structural diagram of another antenna system. FIG. 2 shows a bottom view of the antenna system shown in FIG. 1 to illustrate the corresponding openings of the above-mentioned high-frequency radiation unit. . Among them, FIG. 2 shows an embodiment of circular openings. As shown in FIG. 2, since it is a bottom view, only the reflector 101 and a preset number of openings 201 are shown in FIG. The structure in the middle of the opening 201 is a fixing member for fixing the high-frequency radiation unit. The structure shown by the dotted line in FIG. 2 is a fixing member 202 for fixing the low-frequency radiation unit.

Furthermore, Figures 3 and 4 also respectively show a schematic structural diagram of another antenna system, and Figures 3 and 4 are also bottom views of the antenna system shown in Figure 1, wherein Figure 3 shows a square opening 4 shows an embodiment with a polygonal opening, and the polygon in FIG. 4 is illustrated by taking a pentagon as an example. As shown in FIGS. 3 and 4, the reflector 101 is also shown respectively. And the opening 201, and a part of the structure of the fixing member of the high-frequency radiation unit and the fixing member 202 of the low-frequency radiation unit.

In actual use, the above-mentioned low-frequency radiation unit includes a first radiation vibrator, and the low-frequency radiation arm of the first radiation vibrator divides the reflector into multiple regions; the high-frequency radiation unit includes a second radiation vibrator, and the second radiation vibrator is distributed in the first radiation unit. The low-frequency radiation arm of a radiation vibrator is in a plurality of said regions divided by the reflector.

Specifically, the above-mentioned first radiating vibrator is a cross vibrator or an "X"-shaped vibrator. Among them, the cross oscillator is taken as an example for illustration in Fig. 1. As shown in Fig. 1, the vertical projection of the low-frequency radiation arm of the first radiator is divided into four areas on the reflector, and the second radiator of the high-frequency radiator is Distributed in four areas, forming an arrangement in which the first radiating element is nested in the center of the second radiating element, and this method can reduce the space size of the antenna system and help meet the development of the antenna system to the miniaturization design trend.

Furthermore, FIG. 5 shows a schematic structural diagram of a second radiating vibrator, where shown in FIG. 5 is an exploded schematic diagram of the second radiating vibrator. As shown in FIG. 5, the second radiating vibrator includes a high-frequency radiation arm 501 , A high-frequency oscillator feed piece 502 fixedly connected to the high-frequency radiating arm 501, and a first fixing member 503 configured to install the high-frequency radiating arm 501.

Specifically, the high-frequency radiation arm is fixed on the reflector through the first fixing member.

In actual use, there are generally two high-frequency oscillator feed plates 502 of the second radiating oscillator, which can be fixed on the high-frequency radiating arm 501 through a fixing plastic part 502a. The high-frequency radiating arm 501 is usually a high-frequency oscillator die-casting. The first fixing member is fixed on the reflector plate, and the first fixing member is usually a plastic member.

Further, FIG. 6 shows a schematic structural diagram of a first radiation vibrator of a low-frequency radiation unit. As shown in FIG. 6, the first radiation vibrator includes a low-frequency radiation arm and a second fixing member for mounting the low-frequency radiation arm; wherein the The low-frequency radiation arm is fixed on the reflector through the second fixing member.

In actual use, since the first radiating vibrator is a cross vibrator, or an "X"-shaped vibrator, the low-frequency radiation arm may include a PCB substrate arranged crosswise, such as the low-frequency radiation arm 601 as shown in FIG. 6, with the first radiation The vibrator is a cross vibrator as an example. The two PCB substrates that make up the low-frequency radiating arm 601 are fixed orthogonally, and the two PCB substrates that are fixed orthogonally are printed with radiation lines to realize the low-frequency radiation function of the low-frequency radiating arm. .

Furthermore, FIG. 6 also includes a second fixing member, which includes a radiating arm fixing bracket 602a, and a fixing base 602b, and the fixing base 602b is provided with a power feeding unit.

In actual use, the working frequency band of the aforementioned low-frequency radiation unit is 698MHz-960MHz, or part of the frequency band, and the working frequency band of the aforementioned high-frequency radiation unit is 1710MHz-2690MHz, or part of the frequency band. In addition, the second radiating element of the high-frequency radiation unit and the first radiating element of the low-frequency radiation unit are both ±45° polarized antenna elements, and openings are provided at the corresponding positions of the high-frequency radiation unit, for example, in the reflector. Above, the method of opening the bottom of the high-frequency radiating unit can achieve the effect of isolation and filtering. When the first radiating element of the low-frequency radiating unit is excited, the coupling current coupled to the second radiating element of the high-frequency radiating unit is It can be suppressed and effectively improve the distortion of the low-frequency pattern.

For ease of understanding, Fig. 7 shows a low-frequency pattern, where Fig. 7 shows the low-frequency pattern when the corresponding position of the high-frequency radiating unit is not open. When radiating the vibrator, a coupling current will be generated on the second radiation vibrator of the high-frequency radiation unit. This part of the current also participates in the radiation and superimposes with the field radiated by the first radiation vibrator of the low-frequency radiation unit, resulting in distortion of the low-frequency pattern , Which is the distortion map shown in Figure 7.

Fig. 8 also shows another low-frequency pattern. In Fig. 8, an embodiment with openings at the corresponding position of the high-frequency radiating unit is shown. In the case of a radiating oscillator, the coupling current coupled to the second radiating oscillator of the high-frequency radiating unit is suppressed, and the low-frequency pattern tends to be normal. In addition, experiments have shown that the above-mentioned method of opening a hole at a position corresponding to the high-frequency radiating unit can reduce the influence of the second radiating element of the high-frequency radiating unit on the low-frequency radiation pattern, and at the same time, the low-frequency polarization isolation scale can be increased by more than 5dB.

Therefore, the antenna system provided by the embodiments of the present disclosure can effectively isolate and filter the high-frequency radiation unit by opening a hole at the position corresponding to the high-frequency radiation unit, and reduce the effect of the high-frequency radiation unit on the radiation pattern of the low-frequency radiation unit. The effect is to reduce the coupling between high and low frequency oscillators, thereby improving the overall performance of the antenna system.

It should be understood that in the above drawings, the number of high-frequency radiation units is 4 and the number of low-frequency radiation units is 1 as an example. In actual use, the number of the above-mentioned high-frequency radiation units and the low-frequency radiation The number of units can also be set according to actual usage, which is not limited in the embodiments of the present disclosure.

On the basis of the above-mentioned embodiment, the embodiment of the present disclosure also provides a communication device configured with the above-mentioned antenna system.

The communication device provided in the embodiment of the present disclosure has the same technical features as the antenna system provided in the foregoing embodiment, so it can also solve the same technical problem and achieve the same technical effect.

Those skilled in the art can clearly understand that, for the convenience and conciseness of the description, the specific working process of the communication device described above can refer to the corresponding process in the foregoing embodiment, which will not be repeated here.

In addition, in the description of the embodiments of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, they may be fixed or detachable connections. , Or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those skilled in the art, the specific meaning of the above-mentioned terms in the present disclosure can be understood under specific circumstances.

In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation or must have a specific orientation. The azimuth structure and operation, therefore, cannot be understood as a limitation of the present disclosure. In addition, the terms "first", "second" or "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

Finally, it should be noted that the above embodiments are only specific implementations of the present disclosure, which are used to illustrate the technical solutions of the present disclosure, rather than limit it. The protection scope of the present disclosure is not limited thereto, although referring to the foregoing embodiments The present disclosure has been described in detail, and those skilled in the art should understand that any person skilled in the art within the technical scope disclosed in the present disclosure can still modify the technical solutions described in the foregoing embodiments or can easily imagine Changes, or equivalent replacements of some of the technical features; and these modifications, changes, or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure, and should be covered by the scope of protection of the present disclosure Inside. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

An antenna system, characterized by comprising: a reflector, and at least one high-frequency radiation unit and at least one low-frequency radiation unit arranged on the reflector;

Wherein, at least one of the high-frequency radiation unit and at least one of the low-frequency radiation unit are arranged on the reflector according to a preset arrangement;

An opening is provided on the reflector plate at a position corresponding to the high-frequency radiation unit to isolate the high-frequency radiation unit.
The antenna system according to claim 1, wherein the shape of the opening corresponding to the high-frequency radiation unit is one of the following shapes: a circle, a square, or a polygon.
The antenna system according to claim 2, wherein the size of the opening corresponding to the high-frequency radiation unit matches the size of the balun of the high-frequency radiation unit.
The antenna system according to claim 1, wherein the low-frequency radiation unit comprises a first radiation element, and the low-frequency radiation arm of the first radiation element divides the reflector into a plurality of regions;

The high-frequency radiation unit includes a second radiation vibrator, and the second radiation vibrator is distributed in a plurality of the regions divided by the low-frequency radiation arm of the first radiation vibrator on the reflector.
The antenna system according to claim 4, wherein the first radiating element is a cross element or an "X"-shaped element.
The antenna system of claim 4, wherein the second radiating element comprises a high-frequency radiating arm, a high-frequency radiator feed piece fixedly connected to the high-frequency radiating arm, and a high-frequency radiating element configured to install the high-frequency radiating arm. The first fixing part of the radiating arm;

The high-frequency radiation arm is fixed on the reflector through the first fixing member.
The antenna system according to claim 6, wherein the first radiating element comprises the low-frequency radiating arm and a second fixing member for installing the low-frequency radiating arm;

The low-frequency radiation arm is fixed on the reflector through the second fixing member.
The antenna system according to claim 1, wherein the working frequency band of the low-frequency radiation unit is 698MHz-960MHz.
The antenna system according to claim 1, wherein the working frequency band of the high-frequency radiation unit is 1710MHz-2690MHz.
A communication device, characterized in that the communication device is equipped with the antenna system according to any one of claims 1-9.