CN211700577U - MIMO antenna array and communication equipment - Google Patents

Abstract

The utility model provides a MIMO antenna array and communications facilities relates to the technical field of base station antenna, this MIMO antenna array, include: the first subarray and the second subarray are meshed and connected with each other along a first direction; a plurality of occlusion points are formed at the occlusion positions of the first subarray and the second subarray; and the first subarray and the second subarray are provided with array elements corresponding to the respective bite points, and each array element comprises a plurality of radiation units and is used for carrying out signal radiation. The utility model provides a MIMO antenna array and communications facilities connects along the mutual interlock of first direction through first subarray and second subarray, forms MIMO's mode, can make whole antenna whole compacter, helps realizing the miniaturized development of antenna.

Description

MIMO antenna array and communication equipment

Technical Field

The utility model belongs to the technical field of the technique of base station antenna and specifically relates to a MIMO antenna array and communications facilities are related to.

Background

With the rapid development of mobile communication, spectrum resources and space resources are increasingly tense, and operators begin to deeply plough a single low-frequency and high-frequency network, so that MIMO (multiple-in multiple-out) antennas become the main requirements of operators, and the MIMO antennas can fully utilize the space of a base station, arrange multi-surface antennas, and improve the utilization rate of spectrum resources.

However, in the conventional MIMO antenna, when a multi-surface antenna is used in a layout, the problem of horizontal plane side lobe interference is conspicuous, and at the same time, the conventional MIMO antenna often occupies a large space and is difficult to be disposed in a miniaturized manner.

SUMMERY OF THE UTILITY MODEL

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

In a first aspect, an embodiment of the present invention provides a MIMO antenna array, including: the first subarray and the second subarray are meshed and connected with each other along a first direction; the first subarray and the second subarray are meshed to form a plurality of meshing points; and the first subarray and the second subarray are provided with array elements corresponding to the respective bite points, and each array element comprises a plurality of radiation units and is used for carrying out signal radiation.

Preferably, in a preferred embodiment, the sum of the numbers of the radiation units of the first subarray and the second subarray at different bite points is equal.

Preferably, in a preferred embodiment, the array element comprises a plurality of the radiation elements arranged along the second direction on the array element; wherein the first direction is perpendicular to the second direction.

Preferably, in a preferred embodiment, the array elements of the first sub-array include a plurality of first array elements and a plurality of second array elements; wherein the number of the radiation elements included in the first array element is greater than the number of the radiation elements included in the second array element; the first array elements and the second array elements are alternately arranged on the first subarray along the first direction; and the first array element and the second array element respectively correspond to the adjacent bite points.

Preferably, in a preferred embodiment, the array elements of the second sub-array include a plurality of third array elements and a plurality of fourth array elements; wherein the number of the radiation elements included in the third array element is less than the number of the radiation elements included in the fourth array element; the third array elements and the fourth array elements are alternately arranged on the second subarray along the first direction; and the third array element and the fourth array element respectively correspond to the adjacent bite points.

Preferably, in a preferred embodiment, the sum of the numbers of the radiation elements included in the first array element and the third array element corresponding to the same occlusion point is equal to the sum of the numbers of the radiation elements included in the second array element and the fourth array element corresponding to the adjacent occlusion point.

Preferably, in a preferred embodiment, the MIMO antenna array further includes an input/output port; wherein the input/output ports are disposed on the first subarray and the second subarray, and are located along an edge of the first direction.

Preferably, in a preferred embodiment, the first array element, or a plurality of the radiation elements included in the second array element, has a spacing of 0.6 wavelength along the second direction; in the adjacent first array element and the second array element, the vertical distance between two adjacent radiation units in the first direction is 0.85 wavelength.

Preferably, in a preferred embodiment, the third array element or the fourth array element includes a plurality of radiation units, and the distance between the radiation units along the second direction is 0.6 wavelength; in the adjacent third array element and the adjacent fourth array element, the vertical distance between two adjacent radiation units in the first direction is 0.85 wavelength.

In a second aspect, the present invention provides a communication device, where the MIMO antenna array 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 a MIMO antenna array and communications facilities, including first subarray and the second subarray along mutual interlock connection of first direction, wherein, the position of first subarray and second subarray interlock forms a plurality of interlock points; the first subarray and the second subarray are provided with array elements corresponding to the respective occlusion points, and specifically, the array elements each comprise a plurality of radiation units for signal radiation; the first subarray and the second subarray are connected in a meshed mode along the first direction to form an MIMO mode, the whole antenna can be made to be more compact, and miniaturization development of the antenna is facilitated.

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 MIMO antenna array according to an embodiment of the present invention;

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

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

fig. 4 is a schematic diagram of a communication device according to an embodiment of the present invention.

Icon: 100-a first sub-array; 200-a second sub-array; 110-a first array element; 101-a radiating element; 120-a second array element; 210-a third array element; 220-fourth array element.

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 process of using a multi-surface antenna in a layout mode, the existing MIMO antenna is difficult to be miniaturized, and meanwhile, the problem of horizontal side lobe interference is also obvious, the horizontal side lobe not only can interfere two antennas, but also can cause the waste of a large amount of radiation power outside a coverage area, so that the design of the miniaturized MIMO antenna with high horizontal side lobe suppression is particularly urgent. Based on this, the embodiment of the utility model provides a MIMO antenna array and communications facilities can carry out miniaturized deployment, simultaneously, also can effectively restrain the problem of sidelobe interference.

For the understanding of the present embodiment, a MIMO antenna array disclosed in the embodiments of the present invention will be described in detail first.

The embodiment of the utility model provides a MIMO antenna array, like FIG. 1 a MIMO antenna array's structure schematic diagram, include: a first sub-array 100 and a second sub-array 200 which are mutually engaged and connected along a first direction.

Wherein, the direction shown by the arrow in fig. 1 is a first direction, generally the first direction is along the longitudinal direction of the MIMO antenna array body, the first sub-array 100 and the second sub-array 200 are disposed on the radiator of the MIMO antenna array, and the first sub-array 100 and the second sub-array 200 are generally disposed at two sides of the antenna normal, wherein the antenna normal is generally along the first direction, and at the center line position of the radiator, not shown in fig. 1.

Further, a plurality of engagement points are formed at the positions where the first subarray 100 and the second subarray 200 are engaged; i.e. the toothed positions of mutual engagement in fig. 1. And, the first subarray 100 and the second subarray 200 are provided with array elements corresponding to the respective bite points, and the array elements each include a plurality of radiation units for performing signal radiation.

Wherein, in fig. 1, in first subarray 100 and second subarray 200, all include a plurality of array elements, as the array element that the dotted line shows in fig. 1, and, every array element that the dotted line shows all includes a plurality of radiating element 101, when specifically realizing, radiating element in the MIMO antenna array shown in fig. 1 is the basic radiating element who constitutes the antenna, can effective radiation or receive radio wave, for example, can be radiating element such as hertz electric oscillator, hertz magnetic oscillator and huygens element radiator, specifically can set up according to the in-service behavior to satisfy the radiation performance of antenna, the embodiment of the utility model provides a do not limit this.

The embodiment of the utility model provides a MIMO antenna array, including first subarray and the second subarray along mutual interlock connection of first direction, wherein, the position of first subarray and second subarray interlock forms a plurality of interlock points; the first subarray and the second subarray are provided with array elements corresponding to the respective occlusion points, and specifically, the array elements each comprise a plurality of radiation units for signal radiation; the first subarray and the second subarray are connected in a meshed mode along the first direction to form an MIMO mode, the whole antenna can be made to be more compact, and miniaturization development of the antenna is facilitated.

Further, in fig. 1, the first subarray and the second subarray are engaged with each other along the first direction, so that the first subarray and the second subarray which are respectively located on two sides of the normal of the antenna can be embedded into each other, when the radiation unit is a dual-polarization radiation unit, four independent 33 ° beams (2 +45 °, two-45 °) can be formed, and an MIMO structure is formed on the radiation surface, which not only can meet the miniaturization requirement of the antenna, but also can make the horizontal beam width converge, thereby achieving the purpose of horizontal plane sidelobe suppression.

Further, the sum of the numbers of the radiation units of the first subarray and the second subarray on different bite points is equal. I.e. the number of radiating elements per row shown in fig. 1 is equal.

Further, a plurality of radiating elements that above-mentioned array element includes are arranged along the second direction on the array element, wherein, the embodiment of the utility model provides an in the first direction perpendicular with the second direction, promptly, the second direction is the transverse direction along the radiating surface of MIMO antenna array.

It should be understood that, in fig. 1, an embodiment of a limited number of engagement points is shown, and the position corresponding to each engagement point is provided with the array elements of the first subarray and the second subarray, further, the number of the array elements shown in fig. 1, and the number of the radiation units included in each array element are described by taking a limited number as an example, in actual use, the number of the engagement points formed by the array elements of the first subarray and the second subarray, and the number of the radiation units included in each array element may be set according to an actual use condition, that is, both the horizontal and vertical dimensions of the MIMO antenna array may be set according to an actual use condition, which is not limited by the embodiments of the present invention.

Further, as shown in fig. 1, the array elements of the first sub-array include a plurality of first array elements 110 and a plurality of second array elements 120;

the number of the radiation elements 101 included in the first array element 110 is greater than that of the radiation elements included in the second array element; the first array elements and the second array elements are alternately arranged on the first subarray along the first direction; and the first array element and the second array element respectively correspond to adjacent bite points.

Further, as shown in fig. 1, the array elements of the second sub-array include a plurality of third array elements 210 and a plurality of fourth array elements 220;

the number of the radiation elements included in the third array element 210 is less than the number of the radiation elements included in the fourth array element 220; the third array elements 210 and the fourth array elements 220 are alternately arranged along the first direction on the second subarray; the third array element 210 and the fourth array element 220 correspond to adjacent bite points, respectively.

Specifically, as shown in fig. 1, on the first subarray, the plurality of first array elements 110 and the plurality of second array elements 120 are alternately arranged in sequence, on the second subarray, the plurality of third array elements 210 and the plurality of fourth array elements 220 are alternately arranged in sequence, and in actual use, in order to make the sum of the numbers of radiation elements on different engagement points of the first subarray and the second subarray equal, the array elements are usually set to be at one engagement point, corresponding to the first array element of one first subarray and the third array element of one second subarray, that is, in the form shown in fig. 1, the top first engagement point corresponds to the first array element 110 and the third array element 210, and at this time, the radiation elements included in the first array element 110 and the third array element 210 are arranged in the second direction.

Similarly, the second meshing point corresponds to the second array element 120 and the fourth array element 220, and at this time, the radiation units included in the second array element 120 and the fourth array element 220 are also arranged along the second direction. The MIMO antenna array shown in fig. 1 can be formed on the radiation surface by alternately arranging the array elements in sequence.

As shown in fig. 1, the sum of the numbers of the radiation units included in the first array element and the third array element corresponding to the same occlusion point is equal to the sum of the numbers of the radiation units included in the second array element and the fourth array element corresponding to the adjacent occlusion point.

For example, the number of radiation elements included in the first array element is denoted by M, the number of radiation elements included in the second array element is denoted by N, the number of radiation elements included in the third array element is denoted by P, and the number of radiation elements included in the fourth array element is denoted by Q, where the number of radiation elements included in each array element satisfies: m + P ═ N + Q.

In practical use, for the first sub-array, the number relation of the radiation elements included in the first array element and the second array element usually satisfies M ═ N +1, and for the second sub-array, the number relation of the radiation elements included in the third array element and the fourth array element usually satisfies P ═ Q-1.

For example, in the MIMO antenna array shown in fig. 1, M is 3, N is 2, P is 2, and Q is 3, that is, the above-mentioned number relationship is satisfied.

When in actual use, the specific quantity of above-mentioned M, N, P and Q can set up according to the in-service use condition to in order to satisfy above-mentioned quantity relation, and to the performance demand of MIMO antenna array, the embodiment of the utility model provides a do not restrict this.

Further, the spacing between the plurality of radiation elements included in the first array element or the second array element along the second direction is generally set to 0.6 wavelength, and the vertical spacing between two adjacent radiation elements in the first direction in adjacent first array elements and second array elements is 0.85 wavelength.

That is, on the radiation surface, the distance between two adjacent radiation units in the first array element in the transverse direction is 0.6 wavelength, and the distance between two adjacent radiation units in the longitudinal direction is 0.85 wavelength.

Further, the third array element or the fourth array element includes a plurality of radiation units with a spacing of 0.6 wavelength along the second direction; and in the adjacent third array element and the fourth array element, the vertical spacing between two adjacent radiation units in the first direction is 0.85 wavelength.

That is, on the radiation surface, the distance between two adjacent radiation units in the second array element in the transverse direction is 0.6 wavelength, and the distance between two adjacent radiation units in the longitudinal direction is 0.85 wavelength.

When actual use, the distance parameter between the radiating element can also be adjusted according to actual in service behavior on above-mentioned distance interval, the embodiment of the utility model provides a do not restrict this.

Further, the MIMO antenna array further includes an input/output port; the input/output ports are arranged on the first subarray and the second subarray, and are arranged along the edge position of the first direction.

For the convenience of understanding, fig. 2 also shows a schematic structural diagram of another MIMO antenna array on the basis of fig. 1.

In fig. 2, a first subarray 100 and a second subarray 200 which are mutually engaged and connected along a first direction are included, and a plurality of first array elements 110 and a plurality of second array elements 120 included in the first subarray 100, and a plurality of third array elements 210 and a plurality of fourth array elements 220 included in the second subarray 200; the plurality of first array elements 110 and the plurality of second array elements 120 are alternately arranged in the first direction, and the plurality of third array elements 210 and the plurality of fourth array elements 220 are also alternately arranged in the first direction.

In fig. 2, a plurality of array elements are described as an example, and the plurality of array elements are replaced with ellipses in fig. 2.

It should be understood that, in fig. 2, the number of array elements may be set according to actual use requirements, and the embodiment of the present invention does not limit this.

Further, in addition to the above structure, fig. 2 includes a plurality of input/output ports. Specifically, as shown in fig. 2, four input/output ports are included: port1, Port2, Port3, Port 4.

In practical use, in fig. 2, ports 1 and 2 are a set of input/output ports, i.e., one is an input Port and one is an output Port; similarly, ports 3 and 4 are also a set of input/output ports, and therefore, in the MIMO antenna array shown in fig. 2, ports 1 and 2 are both 2T 2R; port3 and Port4 are both 2T2R, thereby forming a 4T4R MIMO structure.

Further, based on the MIMO antenna array shown in fig. 2, a MIMO structure of 8T8R may also be formed, at this time, two MIMO antenna arrays shown in fig. 2 may be used in cascade, specifically, as shown in another structural schematic diagram of the MIMO antenna array shown in fig. 3, two MIMO antenna arrays shown in fig. 2 are included, where in fig. 3, the structure of each MIMO antenna array is the same as that in fig. 2, and in fig. 3, in addition to the input/output ports Port1, Port2, Port3, and Port4, an input/output Port is also included: ports 5, 6, 7, and 8, and the input/output ports Port5 to Port8 may be provided in the same manner as the input/output ports Port1 to Port4, so that an 8T8R MIMO structure can be formed.

When in actual use, the quantity of above-mentioned input/output's port can also set up according to the in-service use condition, the embodiment of the utility model provides a do not restrict to this.

To sum up, the embodiment of the utility model provides a MIMO antenna array is connected through interlocking first subarray and second subarray along the mutual of first direction, forms MIMO's mode, can realize the miniaturization of antenna, simultaneously, also can expand horizontal beam width, improve horizontal plane sidelobe suppression effect, and then improves the performance of antenna.

Further, on the basis of the above embodiments, the embodiment of the present invention further provides a communication device, which is configured with the MIMO antenna array according to the above embodiments.

Fig. 4 is a schematic diagram of a communication device, which includes modules such as an antenna system 410, a Radio Remote Unit (RRU) system 420, a baseband processing Unit (BBU) system 430, a core network system 440, and a terminal 450.

For convenience of explanation, fig. 4 shows only portions related to the embodiment of the present invention. It should be understood that the configuration of the communication device shown in fig. 4 does not constitute a limitation of the communication device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each constituent element of the communication apparatus in detail with reference to fig. 4:

the antenna system 410 is used for converting spatial electromagnetic waves into guided waves, and particularly, converts spatial electromagnetic waves into guided waves and transmits the guided waves to the RRU for radio frequency processing, or converts radio frequency signals transmitted by the RRU into spatial electromagnetic waves. Typically the antenna system includes, but is not limited to, a radiating element, a reflective surface, a housing, a radio frequency cable, a control unit, etc.

The RRU system 420 is used for guided wave transceiving processing for processing antenna end conversion. Typically, RRU systems include, but are not limited to, a Receiver (RX), a Transmitter (TX), a power amplifier, a filter, etc.

The BBU system 430 is used to implement encoding and modulation of digital signals. Typically, BBU systems include, but are not limited to, modems, encoders, decoders, and the like.

The core network system 440 is a neural center of the entire communication system and is responsible for command and packet switching of the entire communication system. The main functions are to provide user connection, user management and service bearing. The core network system includes, but is not limited to, switches, routers, and the like.

The terminal 450 is an object of a communication system service, is an object of task initiation and service termination, and is an important human-computer interaction device. The main function is to complete the intercommunication between human and machine. Terminals include, but are not limited to, mobile phones, computers, and the like.

It will be appreciated that the configuration of the communication device shown in fig. 4 is merely illustrative, and that the communication device may also include more or fewer components than shown in fig. 4, or have a different configuration than shown in fig. 4. The components shown in fig. 4 may be implemented in hardware, software, or a combination thereof.

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

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. A MIMO antenna array, comprising: the first subarray and the second subarray are meshed and connected with each other along a first direction;

the first subarray and the second subarray are meshed to form a plurality of meshing points;

and the first subarray and the second subarray are provided with array elements corresponding to the respective bite points, and each array element comprises a plurality of radiation units and is used for carrying out signal radiation.

2. A MIMO antenna array according to claim 1, wherein the sum of the number of radiating elements of the first and second sub-arrays at different bite points is equal.

3. A MIMO antenna array according to claim 2, wherein the array elements comprise a plurality of the radiating elements arranged in a second direction across the array elements, wherein the first direction is orthogonal to the second direction.

4. A MIMO antenna array according to claim 3, wherein the elements of the first sub-array comprise a plurality of first elements and a plurality of second elements;

wherein the number of the radiation elements included in the first array element is greater than the number of the radiation elements included in the second array element;

the first array elements and the second array elements are alternately arranged on the first subarray along the first direction;

and the first array element and the second array element respectively correspond to the adjacent bite points.

5. A MIMO antenna array as claimed in claim 4, wherein the elements of the second sub-array comprise a plurality of third elements and a plurality of fourth elements;

wherein the number of the radiation elements included in the third array element is less than the number of the radiation elements included in the fourth array element;

the third array elements and the fourth array elements are alternately arranged on the second subarray along the first direction;

and the third array element and the fourth array element respectively correspond to the adjacent bite points.

6. A MIMO antenna array as claimed in claim 5, wherein the sum of the number of the radiating elements comprised in the first and third array elements corresponding to the same occlusion point is equal to the sum of the number of the radiating elements comprised in the second and fourth array elements corresponding to the adjacent occlusion point.

7. A MIMO antenna array according to claim 1, wherein the MIMO antenna array further comprises an input-output port;

wherein the input/output ports are disposed on the first subarray and the second subarray, and are located along an edge of the first direction.

8. A MIMO antenna array as claimed in claim 4, wherein the first array element, or a plurality of the radiating elements comprised in the second array element, is spaced apart by 0.6 wavelength in the second direction;

in the adjacent first array element and the second array element, the vertical distance between two adjacent radiation units in the first direction is 0.85 wavelength.

9. A MIMO antenna array as claimed in claim 5, wherein the third array element, or a plurality of the radiating elements comprised in the fourth array element, are spaced apart by 0.6 wavelength in the second direction;

in the adjacent third array element and the adjacent fourth array element, the vertical distance between two adjacent radiation units in the first direction is 0.85 wavelength.

10. A communication device, characterized in that the communication device is provided with a MIMO antenna array according to any of claims 1-9.

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