CN211980880U - Antenna system and communication device - Google Patents

Abstract

The utility model provides an antenna system and communication equipment relates to smart antenna's technical field, antenna system, include: the reflecting plate, and at least one high-frequency radiating unit and at least one low-frequency radiating unit which are arranged on the reflecting plate; the at least one high-frequency radiation unit and the at least one low-frequency radiation unit are arranged on the reflecting plate according to a preset arrangement mode; the reflecting plate is provided with an opening at a position corresponding to the high-frequency radiation unit so as to isolate the high-frequency radiation unit. The utility model provides an antenna system and communication equipment can effectively keep apart the filtering to high frequency radiating element through the mode at the position trompil that high frequency radiating element corresponds, reduces the influence of high frequency radiating element to low frequency radiating element radiation pattern to promote antenna system's wholeness ability.

Description

Antenna system and communication device

Technical Field

The utility model belongs to the technical field of smart antenna's technique and specifically relates to an antenna system and communication equipment are related to.

Background

With the increasing improvement of the global communication field, a mobile communication system usually has a phenomenon of coexistence of multiple systems, such as coexistence of 2G, 3G and 4G, and coexistence with 5G in the future, each operator considers the evolvability of a later-stage network for long term in order to reduce the network construction and operation maintenance cost, and puts forward higher demands on the broadband, miniaturization and multi-system of an antenna, and requires that one antenna can meet more network systems, cover all mobile communication frequency bands which are available and may be used in the future, and requires that the antenna is small in size so as to facilitate base station site selection and save space resources. Therefore, there is a need for a multi-band, wideband, and miniaturized base station antenna technology.

One of the traditional methods for realizing antenna integration is structural stacking and splicing, namely, antennas with different frequency bands and same frequency and different rows are spliced left and right or up and down, but the size of the antenna is increased, the construction is difficult and the cost is high no matter which splicing method is adopted; the other is realized by using a more mature high-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, and especially in a TDD (Time Division duplex) + FDD (Frequency Division duplex) multi-system integrated antenna, the coaxial scheme can hardly be realized.

In recent years, radiating units similar to a regular cross and an X-shaped radiating unit are gradually used for base station antennas, the radiating units can realize flexible array and are easy to realize multi-antenna integration, but due to the fact that the radiating units in different frequency bands have performance interference, directional patterns are seriously deformed, isolation is poor, and performance of an antenna network is reduced.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides an antenna system and a communication device to alleviate the above technical problems.

In a first aspect, an embodiment of the present invention provides an antenna system, including: the high-frequency radiation unit comprises a reflecting plate, and at least one high-frequency radiation unit and at least one low-frequency radiation unit which are arranged on the reflecting plate; the reflecting plate is provided with at least one high-frequency radiating unit and at least one low-frequency radiating unit, wherein the at least one high-frequency radiating unit and the at least one low-frequency radiating unit are arranged on the reflecting plate according to a preset arrangement mode; and the reflecting plate is provided with an opening at a position corresponding to the high-frequency radiation unit so as to isolate the high-frequency radiation unit.

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

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 radiating unit includes a first radiating element, and a low-frequency radiating arm of the first radiating element divides the reflecting plate into a plurality of regions; the high-frequency radiation unit comprises second radiation oscillators, and the second radiation oscillators are distributed in a plurality of areas divided by the low-frequency radiation arms of the first radiation oscillators on the reflecting plate.

Preferably, in a preferred embodiment, the first radiating element is a cross element, or an "X" element.

Preferably, in a preferred embodiment, the second radiating element includes a high-frequency radiating arm, a high-frequency element feeding piece fixedly connected to the high-frequency radiating arm, and a first fixing member for mounting the high-frequency radiating arm; the high-frequency radiation arm is fixed on the reflecting plate through the first fixing piece.

Preferably, in a preferred embodiment, the first radiating element includes the low-frequency radiating arm and a second fixing member for mounting the low-frequency radiating arm; the low-frequency radiation arm is fixed on the reflecting plate through the second fixing piece.

Preferably, in a preferred embodiment, the operating frequency band of the low-frequency radiating unit is 698MHz-960 MHz.

Preferably, in a preferred embodiment, the operating frequency band of the high-frequency radiating unit is 1710MHz-2690 MHz.

In a second aspect, an embodiment of the present invention further provides a communication device, where the antenna system of the first aspect is configured in the communication device.

The embodiment of the utility model provides a following beneficial effect has been brought:

the embodiment of the utility model provides an antenna system and communication equipment, include: the reflecting plate, and at least one high-frequency radiating unit and at least one low-frequency radiating unit which are arranged on the reflecting plate; the at least one high-frequency radiation unit and the at least one low-frequency radiation unit are arranged on the reflecting plate according to a preset arrangement mode; and, the position department that corresponds with the high frequency radiation unit on the reflecting plate is provided with the trompil to keep apart the high frequency radiation unit, the aforesaid can effectively keep apart the filtering to the high frequency radiation unit through the mode at the position trompil that the high frequency radiation unit corresponds, reduces the influence of high frequency radiation unit to low frequency radiation unit radiation pattern, thereby promotes antenna system's wholeness ability.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

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

Fig. 1 is a schematic structural diagram of an antenna system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another antenna system according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another antenna system according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another antenna system according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a second radiation oscillator according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first radiation oscillator according to an embodiment of the present invention;

fig. 7 is a low frequency directional diagram according to an embodiment of the present invention;

fig. 8 is another low frequency direction diagram according to an embodiment of the present invention.

Icon: 101-a reflector plate; 102-a high frequency radiating element; 103-a low frequency radiating element; 201-opening a hole; 202-a fixing member; 501-high frequency radiating arm; 502-high frequency oscillator feed tab; 502a — a fixed plastic part; 503-a first fixture; 601-low frequency radiating arm; 602 a-radiation arm fixed support; 602 b-fixed base.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

At present, in the existing base station array antenna, a high-frequency radiation unit and a low-frequency radiation unit are often required to be installed on a reflection plate together, and the distance between the high-frequency radiation unit and the low-frequency radiation unit is short, mutual coupling is easily generated between the high-frequency radiation unit and the low-frequency radiation unit under the layout, so that a low-frequency directional diagram is distorted, and meanwhile, the port isolation degree is poor. Based on this, the embodiment of the utility model provides an antenna system and communication equipment to alleviate above-mentioned technical problem.

To facilitate understanding of the present embodiment, an antenna system disclosed in an embodiment of the present invention will be described in detail first.

In a possible implementation, an embodiment of the present invention provides an antenna system, including: the reflecting plate, and at least one high-frequency radiating unit and at least one low-frequency radiating unit which are arranged on the reflecting plate;

the at least one high-frequency radiation unit and the at least one low-frequency radiation unit are arranged on the reflecting plate according to a preset arrangement mode;

the reflecting plate is provided with an opening at a position corresponding to the high-frequency radiation unit so as to isolate the high-frequency radiation unit. The mode of opening isolation can insulate the high-frequency radiation unit from the reflecting plate, thereby achieving the effect of reducing the coupling between high-frequency oscillators and low-frequency oscillators.

Therefore, the embodiment of the present invention provides an antenna system, including: the reflecting plate, and at least one high-frequency radiating unit and at least one low-frequency radiating unit which are arranged on the reflecting plate; the at least one high-frequency radiation unit and the at least one low-frequency radiation unit are arranged on the reflecting plate according to a preset arrangement mode; and, the position department that corresponds with the high frequency radiation unit on the reflecting plate is provided with the trompil to keep apart the high frequency radiation unit, the aforesaid can effectively keep apart the filtering to the high frequency radiation unit through the mode at the position trompil that the high frequency radiation unit corresponds, reduces the influence of high frequency radiation unit to low frequency radiation unit radiation pattern, thereby promotes antenna system's wholeness ability.

For easy understanding, fig. 1 shows a schematic structural diagram of an antenna system, as shown in fig. 1, including a reflection plate 101, a high-frequency radiation unit 102, and a low-frequency radiation unit 103, where the structure shown in fig. 1 is a top view of the antenna system, and fig. 1 illustrates an example including 1 low-frequency radiation unit and 4 high-frequency radiation units. Namely, the number of the high-frequency radiation units is 4, the number of the low-frequency radiation units is 1, and the low-frequency radiation units are arranged in the middle of the reflecting plate; the high-frequency radiating unit is arranged between the low-frequency radiating arms of the low-frequency radiating unit in an inserting mode.

As can be seen from fig. 1, the high frequency radiating elements 102 and the low frequency radiating elements 103 are arranged on the reflective plate 101 according to a preset arrangement mode, wherein, in fig. 1, the low frequency radiating elements are arranged in an arrangement mode of nesting the centers of the 4 high frequency radiating elements, and the high frequency radiating elements 102 and the low frequency radiating elements 103 are both fixed on the reflective plate, and the high frequency radiating elements can be isolated by the openings arranged at the positions on the reflective plate corresponding to the high frequency radiating elements.

Further, the shape of the opening corresponding to the high-frequency radiation unit is one of the following shapes: circular, square, polygonal. In practical 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, is equal to or slightly larger than the size of the projection of the balun of the high-frequency radiation unit.

For convenience of understanding, fig. 2 is a schematic structural diagram of another antenna system, wherein fig. 2 is a bottom view of the antenna system shown in fig. 1 to illustrate openings corresponding to the high-frequency radiating elements. Fig. 2 shows an embodiment of a circular opening, and as shown in fig. 2, only the reflection plate 101 and a predetermined number of openings 201 are shown in fig. 2 due to a bottom view, wherein a fixing member for fixing the high-frequency radiation unit is arranged in the middle of the openings 201. The structure shown by the dotted line in fig. 2 is a fixing member 202 for fixing the low frequency radiation unit.

Further, fig. 3 and 4 respectively show a schematic structural diagram of another antenna system, and fig. 3 and 4 are bottom views of the antenna system shown in fig. 1, wherein fig. 3 shows an embodiment of a square opening, fig. 4 shows an embodiment of a polygonal opening, and the polygon in fig. 4 is illustrated by taking a pentagon as an example, as shown in fig. 3 and 4, a reflection plate 101 and an opening 201, and a fixing member of a high-frequency radiation unit and a fixing member 202 of a low-frequency radiation unit are also respectively shown.

In practical use, the low-frequency radiating unit comprises a first radiating oscillator, and a low-frequency radiating arm of the first radiating oscillator divides the reflecting plate into a plurality of areas; the high-frequency radiation unit comprises second radiation oscillators, and the second radiation oscillators are distributed in a plurality of areas divided by the low-frequency radiation arms of the first radiation oscillators on the reflecting plate.

Specifically, the first radiation oscillator is a cross oscillator or an "X" type oscillator. In fig. 1, a cross-shaped dipole is taken as an example for illustration, as shown in fig. 1, a vertical projection of a low-frequency radiating arm of a first radiating element is divided into four regions on a reflecting plate, and second radiating elements of a high-frequency radiating unit are distributed in the four regions to form an arrangement mode that the first radiating elements are nested in centers of the second radiating elements, and in this way, the space size of an antenna system can be reduced, which is helpful for meeting the trend of the antenna system towards miniaturization design.

Further, fig. 5 shows a schematic structural diagram of a second radiation oscillator, wherein fig. 5 shows an exploded schematic diagram of the second radiation oscillator, and as shown in fig. 5, the second radiation oscillator includes a high-frequency radiation arm 501, a high-frequency oscillator feed tab 502 fixedly connected to the high-frequency radiation arm 501, and a first fixing member 503 for mounting the high-frequency radiation arm 501.

Specifically, the high-frequency radiation arm is fixed to the reflection plate by a first fixing member.

In actual use, the high-frequency oscillator feed pieces 502 of the second radiation oscillator are generally two in number and can be fixed to the high-frequency radiation arm 501 through a fixing plastic member 502a, and the high-frequency radiation arm 501 is generally a die-cast high-frequency oscillator and is fixed to the reflection plate through a first fixing member, and the first fixing member is generally a plastic member.

Further, fig. 6 shows a schematic structural diagram of a first radiating element of a low-frequency radiating unit, and as shown in fig. 6, the first radiating element includes a low-frequency radiating arm and a second fixing member for mounting the low-frequency radiating arm; wherein, the low-frequency radiation arm is fixed on the reflecting plate through a second fixing piece.

In practical use, because the first radiation oscillator is a cross oscillator or an "X" type oscillator, the low-frequency radiation arm may include PCB substrates arranged in a cross manner, such as a low-frequency radiation arm 601 shown in fig. 6, for example, the first radiation oscillator is a cross oscillator, the two PCB substrates forming the low-frequency radiation arm 601 are fixed in an orthogonal manner, and radiation lines are printed on the two PCB substrates fixed in an orthogonal manner, so as to implement a low-frequency radiation function of the low-frequency radiation arm.

Further, fig. 6 also includes a second fixing member, where the second fixing member includes a radiation arm fixing bracket 602a, and a fixing base 602b, and the fixing base 602b is provided with a feeding unit.

In practical use, the operating frequency band of the low-frequency radiating unit is 698MHz to 960MHz, or a partial frequency band thereof, and the operating frequency band of the high-frequency radiating unit is 1710MHz to 2690MHz, or a partial frequency band thereof. And the second radiation oscillator of the high-frequency radiation unit and the first radiation oscillator of the low-frequency radiation unit are both antenna oscillators polarized in +/-45 degrees, and the holes are formed in the positions corresponding to the high-frequency radiation unit, for example, on the reflecting plate, the holes are formed in the bottom of the high-frequency radiation unit, so that the effect of isolation and filtering can be achieved, when the first radiation oscillator of the low-frequency radiation unit is excited, the coupling current coupled to the second radiation oscillator of the high-frequency radiation unit can be inhibited, and the distortion of a low-frequency directional diagram can be effectively improved.

For the sake of understanding, fig. 7 shows a low-frequency directional diagram, where fig. 7 shows the low-frequency directional diagram when the corresponding position of the high-frequency radiating element is not perforated, and when the first radiating element of the low-frequency radiating element is excited, a coupling current is generated on the second radiating element of the high-frequency radiating element, and this part of the coupling current also participates in radiation and is superimposed with the field radiated by the first radiating element of the low-frequency radiating element, resulting in distortion of the low-frequency directional diagram, i.e. the distortion diagram shown in fig. 7.

Fig. 8 shows still another low frequency pattern, in which fig. 8 shows an embodiment in which the high frequency radiating element has an opening at a position corresponding to the high frequency radiating element, and as shown in fig. 8, when the first radiating element of the low frequency radiating element is excited, the coupling current to the second radiating element of the high frequency radiating element is suppressed, and the low frequency pattern tends to be normal. In addition, according to the experimental surface, the second radiation oscillator of the high-frequency radiation unit can reduce the influence on the low-frequency radiation directional diagram due to the hole opening mode at the position corresponding to the high-frequency radiation unit, and meanwhile, the magnitude of the low-frequency polarization isolation degree is improved by more than 5 dB.

Therefore, the embodiment of the utility model provides an antenna system, through the mode at the position trompil that high frequency radiating element corresponds, can effectively keep apart the filtering to high frequency radiating element, reduce high frequency radiating element to low frequency radiating element radiation pattern's influence, reach the effect that reduces coupling between high low frequency oscillator to promote antenna system's wholeness ability.

It should be understood that, in the above-mentioned drawings, the number of the high-frequency radiating elements is 4, and the number of the low-frequency radiating elements is 1, for example, and in practical use, the number of the high-frequency radiating elements and the number of the low-frequency radiating elements may also be set according to practical use conditions, which is not limited by the embodiment of the present invention.

On the basis of the above embodiment, the embodiment of the present invention further provides a communication device, and the communication device is configured with the above antenna system.

The embodiment of the utility model provides a communication equipment, the antenna system who provides with above-mentioned embodiment has the same technical characteristic, so also can solve the same technical problem, reaches the same technological effect.

It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the communication device described above may refer to the corresponding process in the foregoing embodiment, and is not described herein again.

In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Finally, it should be noted that: the above embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An antenna system, comprising: the high-frequency radiation unit comprises a reflecting plate, and at least one high-frequency radiation unit and at least one low-frequency radiation unit which are arranged on the reflecting plate;

the at least one high-frequency radiation unit and the at least one low-frequency radiation unit are arranged on the reflecting plate according to a preset arrangement mode;

and the reflecting plate is provided with an opening at a position corresponding to the high-frequency radiation unit so as to isolate the high-frequency radiation unit.

2. The antenna system according to claim 1, wherein the shape of the opening corresponding to the high-frequency radiating element is one of the following shapes: circular, square, polygonal.

3. The antenna system according to claim 2, wherein the size of the opening corresponding to the high-frequency radiating element is matched to the size of the balun of the high-frequency radiating element.

4. The antenna system of claim 1, wherein the low frequency radiating element comprises a first radiating element, a low frequency radiating arm of the first radiating element dividing the reflector plate into a plurality of regions;

the high-frequency radiation unit comprises second radiation oscillators, and the second radiation oscillators are distributed in a plurality of areas divided by the low-frequency radiation arms of the first radiation oscillators on the reflecting plate.

5. The antenna system of claim 4, wherein the first radiating element is a cross element, or an "X" shaped element.

6. The antenna system of claim 4, wherein the second radiating element comprises a high-frequency radiating arm, a high-frequency element feed tab fixedly connected with the high-frequency radiating arm, and a first fixing member for mounting the high-frequency radiating arm;

the high-frequency radiation arm is fixed on the reflecting plate through the first fixing piece.

7. The antenna system of claim 6, wherein the first radiating element comprises the low frequency radiating arm and a second mount to which the low frequency radiating arm is mounted;

the low-frequency radiation arm is fixed on the reflecting plate through the second fixing piece.

8. The antenna system of claim 1, wherein the operating frequency band of the low frequency radiating element is 698MHz-960 MHz.

9. The antenna system of claim 1, wherein the operating frequency band of the high-frequency radiating unit is 1710MHz-2690 MHz.

10. A communication device, characterized in that it is provided with an antenna system according to any of claims 1-9.

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