阅读说明：本技术 多频阵列天线及基站 (Multi-frequency array antenna and base station ) 是由 杨耀庭 程伟 于 2020-12-01 设计创作，主要内容包括：本发明提供一种多频阵列天线及基站,涉及移动通信设备技术领域。该多频阵列天线包括反射板,还包括高频辐射单元、中频辐射单元及低频辐射单元,所述高频辐射单元、所述中频辐射单元与所述低频辐射单元均安装在所述反射板上,其中,所述高频辐射单元布设在所述中频辐射单元的下方,所述中频辐射单元布设在所述低频辐射单元的下方。本发明提供的多频阵列天线及基站,高频辐射单元、中频辐射单元和低频辐射单元的工作频段不同且从低到高顺次排布,充分利用了相对反射板的高度维度的空间复用,从而可以有效实现不同制式天线阵列的高度集成,实现多频天线阵列的集成化、小型化和轻量化,最终实现多频天线阵列的低成本目标。(The invention provides a multi-frequency array antenna and a base station, and relates to the technical field of mobile communication equipment. This multifrequency array antenna includes the reflecting plate, still includes high frequency radiation unit, intermediate frequency radiation unit and low frequency radiation unit, high frequency radiation unit intermediate frequency radiation unit with low frequency radiation unit all installs on the reflecting plate, wherein, high frequency radiation unit lays the below of intermediate frequency radiation unit, intermediate frequency radiation unit lays the below of low frequency radiation unit. According to the multi-frequency array antenna and the base station, the working frequency bands of the high-frequency radiation unit, the medium-frequency radiation unit and the low-frequency radiation unit are different and are sequentially arranged from low to high, and spatial multiplexing of height dimensions of the relative reflecting plate is fully utilized, so that high integration of antenna arrays of different modes can be effectively realized, integration, miniaturization and light weight of the multi-frequency antenna array are realized, and finally the low-cost target of the multi-frequency antenna array is realized.)

1. The utility model provides a multifrequency array antenna, includes the reflecting plate, its characterized in that still includes high frequency radiating element, intermediate frequency radiating element and low frequency radiating element, high frequency radiating element intermediate frequency radiating element with low frequency radiating element all installs the reflecting plate, wherein, high frequency radiating element lays the below of intermediate frequency radiating element, intermediate frequency radiating element lays the below of low frequency radiating element.

2. The multi-frequency array antenna of claim 1, wherein the size of the high frequency radiating elements is smaller than the size of the medium frequency radiating elements, and the size of the medium frequency radiating elements is smaller than the size of the low frequency radiating elements.

3. The multi-frequency array antenna of claim 2, wherein the radiating surface of the low-frequency radiating element is cross-shaped, two rows and two columns of the intermediate-frequency radiating element array are arranged in four subareas corresponding to the cross-shaped radiating surface of the low-frequency radiating element, and two rows and two columns of the high-frequency radiating element are arranged below each intermediate-frequency radiating element.

4. The multi-frequency array antenna of claim 2, wherein the radiating surface of the low-frequency radiating unit is polygonal, two rows and two columns of the intermediate-frequency radiating unit arrays are disposed under the same low-frequency radiating unit, and two rows and two columns of the high-frequency radiating unit arrays are disposed under the same intermediate-frequency radiating unit.

5. The multi-frequency array antenna of any one of claims 1 to 4, wherein the high frequency radiation unit has an operating frequency of any one of 2515-2675MHz, 3300-3800MHz and 4900-5000MHz, the intermediate frequency radiation unit has an operating frequency of any one of 1710-2170MHz, 1710-2690MHz and 1400-2700MHz, and the low frequency radiation unit has an operating frequency of any one of 820-880MHz, 790-960MHz and 690-960 MHz.

6. The multi-frequency array antenna according to any one of claims 1 to 4, further comprising decoupling devices, wherein the decoupling devices are respectively disposed between the radiation surface of the high-frequency radiation unit and the radiation surface of the intermediate-frequency radiation unit and/or between the radiation surface of the intermediate-frequency radiation unit and the radiation surface of the low-frequency radiation unit and/or above the radiation surface of the low-frequency radiation unit.

7. The multi-frequency array antenna according to any one of claims 1 to 4, wherein the high frequency radiating element, the intermediate frequency radiating element and the low frequency radiating element are any one of a microstrip antenna, a PCB antenna, a sheet metal antenna, a die-cast antenna, an LCP antenna and a PPS antenna.

8. The multi-frequency array antenna of any one of claims 1 to 4, wherein the high-frequency radiating element, the intermediate-frequency radiating element and the low-frequency radiating element each comprise a radiating surface and a balun, and the balun is located in a middle portion of the radiating surface and extends downward.

9. A base station comprising a multi-frequency array antenna as claimed in any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of mobile communication equipment, in particular to a multi-frequency array antenna and a base station.

Background

With the rapid development of mobile communication services, system standards and construction schedules of different operators are different, and a site on the same sky needs to be provided with a plurality of antennas of different system standards. In order to reduce the complexity of the system and the construction cost of operators, multi-frequency antennas have come to work. With the development of the network coverage technology of the fourth generation mobile communication system (4G) and the construction of the fifth generation mobile communication system (5G), the multi-frequency array antenna of the 4G and 5G fusion class is bound to be in a long-term coexistence stage.

The traditional multi-frequency array antenna is designed in a mode that the transverse size and the longitudinal size are increased, and although the problem of the system coverage effect is solved, the multi-frequency array antenna is generally large in size, heavy in weight and high in cost. How to better solve the requirements of antenna miniaturization and light weight, and under the same sky resource, more antenna technologies of different systems are merged into the sky.

Disclosure of Invention

The invention provides a multi-frequency array antenna and a base station, which are used for solving the defect of low integration level of the multi-frequency array antenna in the prior art.

The invention provides a multi-frequency array antenna which comprises a reflecting plate, a high-frequency radiation unit, a medium-frequency radiation unit and a low-frequency radiation unit, wherein the high-frequency radiation unit, the medium-frequency radiation unit and the low-frequency radiation unit have different working frequency bands, the high-frequency radiation unit is arranged below the medium-frequency radiation unit, and the medium-frequency radiation unit is arranged below the low-frequency radiation unit.

According to the multi-frequency array antenna of the present invention, the size of the high frequency radiation unit is smaller than that of the intermediate frequency radiation unit, and the size of the intermediate frequency radiation unit is smaller than that of the low frequency radiation unit.

According to the multi-frequency array antenna, the radiation surface of the low-frequency radiation unit is in a cross shape, two rows and two columns of the medium-frequency radiation unit arrays are arranged in four subareas corresponding to the cross-shaped radiation surface of the low-frequency radiation unit, and two rows and two columns of the high-frequency radiation unit arrays are arranged below each medium-frequency radiation unit.

According to the multi-frequency array antenna, the radiation surface of the low-frequency radiation unit is polygonal, two rows and two columns of the medium-frequency radiation unit arrays are arranged below the same low-frequency radiation unit, and two rows and two columns of the high-frequency radiation units are arranged below the same medium-frequency radiation unit.

According to the multi-frequency array antenna, the working frequency of the high-frequency radiation unit is any one of 2515-2675MHz, 3300-3800MHz and 4900-5000MHz, the working frequency of the medium-frequency radiation unit is any one of 1710-2170MHz, 1710-2690MHz and 1400-2700MHz, and the working frequency of the low-frequency radiation unit is any one of 820-880MHz, 790-960MHz and 690-960 MHz.

The multi-frequency array antenna further comprises decoupling devices, and the decoupling devices are respectively arranged between the radiation surface of the high-frequency radiation unit and the radiation surface of the medium-frequency radiation unit and/or between the radiation surface of the medium-frequency radiation unit and the radiation surface of the low-frequency radiation unit and/or above the radiation surface of the low-frequency radiation unit.

According to the multi-frequency array antenna, the high-frequency radiation unit, the medium-frequency radiation unit and the low-frequency radiation unit are any one of a microstrip antenna, a PCB antenna, a sheet metal antenna, a die-casting antenna, an LCP antenna and a PPS antenna.

According to the multi-frequency array antenna, the high-frequency radiation unit, the medium-frequency radiation unit and the low-frequency radiation unit all comprise radiation surfaces and baluns, and the baluns are located in the middle of the radiation surfaces and extend downwards.

The invention also provides a base station comprising the multi-frequency array antenna.

According to the multi-frequency array antenna and the base station, the working frequency bands of the high-frequency radiation unit, the medium-frequency radiation unit and the low-frequency radiation unit are different and are sequentially arranged from low to high, and spatial multiplexing of height dimensions of the relative reflecting plate is fully utilized, so that high integration of antenna arrays of different modes can be effectively realized, integration, miniaturization and light weight of the multi-frequency antenna array are realized, and finally the low-cost target of the multi-frequency antenna array is realized.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or 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 those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a side view of a multi-frequency array antenna provided by an embodiment of the present invention;

fig. 2 is a top view of a multi-frequency array antenna provided in the present invention;

fig. 3 is a second top view of the multi-frequency array antenna provided by the present invention;

fig. 4 is a second side view of the multi-frequency array antenna provided by the present invention.

Reference numerals:

1: a reflective plate;

2: a high-frequency radiation unit; 201: a high-frequency radiation unit radiation surface;

202: a high-frequency radiation unit balun; 203: a first decoupling device;

3: an intermediate frequency radiation unit; 301: a radiation surface of the intermediate frequency radiation unit;

302: an intermediate frequency radiation unit balun; 303: a second decoupling means;

4: a low frequency radiating element;

401: a low-frequency radiating element radiating surface; 402: a low-frequency radiating element balun;

403: a third decoupling means.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the embodiments of the present invention, it should be noted that the terms "first" and "second" are used for the sake of clarity in describing the numbering of the components of the product and do not represent any substantial difference, unless explicitly stated or limited otherwise. The directions of "up", "down", "left" and "right" are all based on the directions shown in the attached drawings. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the description of the present invention, it should be noted that, 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 3, an embodiment of the invention provides a multi-frequency antenna array, which includes a reflection plate 1, a high-frequency radiation unit 2, an intermediate-frequency radiation unit 3, and a low-frequency radiation unit 4, where the high-frequency radiation unit 2, the intermediate-frequency radiation unit 3, and the low-frequency radiation unit 4 are radiation units with three different working frequency bands, and are all installed on the reflection plate 1. The high-frequency radiation unit 2 is located below the medium-frequency radiation unit 3, the medium-frequency radiation unit 3 is located below the low-frequency radiation unit 4, and the three radiation units are sequentially arranged from low to high. It should be noted that the operating frequency bands of the high-frequency radiating unit 2, the intermediate-frequency radiating unit 3, and the low-frequency radiating unit 4 are relatively high and low, for example, the operating frequency band of the high-frequency radiating unit 2 is 2500MHz to 5000MHz, the operating frequency band of the intermediate-frequency radiating unit 3 is 1700MHz to 2700MHz, and the operating frequency band of the low-frequency radiating unit 4 is 800MHz to 1000 MHz.

According to the multi-frequency antenna array provided by the embodiment of the invention, the high-frequency radiation unit 2, the medium-frequency radiation unit 3 and the low-frequency radiation unit 4 are different in working frequency band and are sequentially arranged from low to high, and the spatial multiplexing of the height dimension of the relative reflection plate 1 is fully utilized, so that the high integration of antenna arrays of different systems can be effectively realized, the arrangement requirement of the antenna arrays under the specific spatial requirement is met, the integration, miniaturization and lightweight of the multi-frequency antenna array are realized, and the low-cost target of the multi-frequency antenna array is finally realized.

As shown in fig. 1, the size of the high-frequency radiating unit 2 is smaller than that of the intermediate-frequency radiating unit 3, and the size of the intermediate-frequency radiating unit 3 is smaller than that of the low-frequency radiating unit 4.

Fig. 2 is a top view of a multi-frequency array antenna according to an embodiment of the invention. As shown in fig. 3, the multi-frequency array antenna in this embodiment has a cross-shoulder and shoulder topology. The high-frequency radiating unit 2 is located right below the intermediate-frequency radiating unit 3, the high-frequency radiating unit 2 is an array of two rows and two columns, and the two rows and two columns are all located below the intermediate-frequency radiating unit 3. The intermediate frequency radiation units 3 form an array of two rows and two columns, and the two rows and two columns have four intermediate frequency radiation units 3 respectively positioned around the low frequency radiation units 4. The low-frequency radiation unit 4 is a cross-shaped radiation surface and is positioned in the middle of two rows and two columns formed by the medium-frequency radiation units 3 to form a cross-shaped topological form. In the multi-frequency array antenna, the size of the multi-frequency array antenna is basically determined by the size of the radiation surface of the low-frequency radiation unit 4, and the miniaturization of the multi-frequency array antenna can be effectively realized.

Fig. 3 is a top view of a multi-frequency array antenna according to another embodiment of the invention. As shown in fig. 4, the multi-frequency array antenna provided by this embodiment has a topology like a chinese character tian. The high-frequency radiation unit 2 is located below the intermediate-frequency radiation unit 3, and the array form of the high-frequency radiation unit 2 is an array of two rows and two columns and is located below the intermediate-frequency radiation unit 3. The intermediate frequency radiation unit 3 is located below the low frequency radiation unit 4, and the array form of the intermediate frequency radiation unit 3 is an array of two rows and two columns. The radiation surface of the low-frequency radiation unit 4 is polygonal and is positioned above the high-frequency radiation unit 2 and the medium-frequency radiation unit 3. Due to the fact that the shielding part is arranged on the projection of the top view, the technical effect of miniaturization can be achieved in the width direction and the length direction of the reflecting plate 1.

At least three radiation units, such as a high-frequency radiation unit 2, an intermediate-frequency radiation unit 3 and a low-frequency radiation unit 4, are installed on the reflector 1, the three radiation units are different in spatial height on the reflector 1 and are sequentially placed from low to high, the low-frequency radiation unit 4 is higher than the intermediate-frequency radiation unit 3, and the intermediate-frequency radiation unit 3 is higher than the high-frequency radiation unit 2, so that high integration of multi-frequency fusion is achieved. By using similar technical means, it can be deduced that a multi-frequency array antenna is formed by three or more than three radiation units, and thus, the embodiment of the present invention is not particularly limited.

The three radiation units in the embodiment of the present invention are distinguished by different working frequency bands, wherein the high frequency radiation unit 2, the intermediate frequency radiation unit 3, and the low frequency radiation unit 4 correspond to a high frequency, an intermediate frequency, and a low frequency of a working frequency, respectively. Specifically, the high-frequency radiation unit 2 is high-frequency, and the operating frequency of the high-frequency radiation unit 2 is any one of 2515-2675MHz, 3300-3800MHz and 4900-5000 MHz; the intermediate frequency radiation unit 3 is an intermediate frequency, and the working frequency of the intermediate frequency radiation unit 3 is any one of 1710-2170MHz, 1710-2690MHz and 1400-2700 MHz; the low-frequency radiation unit 4 is a low frequency, and the operating frequency of the low-frequency radiation unit 4 is any one of the frequency ranges 820-.

Fig. 1 is a side view of a multi-frequency array antenna according to an embodiment of the present invention. As shown in fig. 1, three kinds of radiation units, i.e., a high-frequency radiation unit 2, a medium-frequency radiation unit 3, and a low-frequency radiation unit 4, are mounted on a reflection plate 1. The high-frequency radiating unit 2 includes a high-frequency radiating unit radiating surface 201 and a high-frequency radiating unit balun 202, the high-frequency radiating unit radiating surface 201 plays a role in radiating electromagnetic waves, and the high-frequency radiating unit balun 202 plays a role in balancing feeding and supporting the high-frequency radiating unit radiating surface 201. The intermediate frequency radiation unit 3 includes an intermediate frequency radiation unit radiation surface 301 and an intermediate frequency radiation unit balun 302, the intermediate frequency radiation unit radiation surface 301 plays a role of radiating electromagnetic waves, and the intermediate frequency radiation unit balun 302 plays a role of balanced feeding and supporting the intermediate frequency radiation unit radiation surface 301. The low-frequency radiation unit 4 includes a low-frequency radiation unit radiation surface 401 and a low-frequency radiation unit balun 402, the low-frequency radiation unit radiation surface 401 plays a role of radiating electromagnetic waves, and the low-frequency radiation unit balun 402 plays a role of balanced feeding and supporting the low-frequency radiation unit radiation surface 401.

As shown in fig. 1, the balun of the if radiation unit 3 is higher than the balun of the if radiation unit 2, and the balun of the if radiation unit 4 is higher than the balun of the if radiation unit, the farther the relative balun heights and spatial positions are apart, the better the pattern index.

In order to optimize the pattern indexes of three different radiation units and solve the coupling problem of the three radiation units, the multi-frequency array antenna provided by the embodiment of the invention further comprises a decoupling device, and as shown in fig. 4, the decoupling device is added among the three radiation units. Decoupling devices are respectively arranged right above the high-frequency radiation unit radiation surface 201, the medium-frequency radiation unit radiation surface 301 and the low-frequency radiation unit radiation surface 401, namely a first decoupling device 203, a second decoupling device 303 and a third decoupling device 403, and all the three decoupling devices are made of metal materials. The first decoupling device 203 is located between the high-frequency radiating element radiating surface 201 and the intermediate-frequency radiating element radiating surface 301, so that the influence of mutual coupling of the high-frequency radiating element 2 and the intermediate-frequency radiating element 3 is weakened, and the index performance is improved. The second decoupling device 303 is located between the radiating plane 301 of the if radiating element and the radiating plane 401 of the lf radiating element, and reduces the mutual coupling effect between the if radiating element 3 and the lf radiating element 4, and improves the performance of the index. The third decoupling device 403 is located above the low-frequency radiating element radiating surface 401, so as to improve the index performance of the low-frequency radiating element 4.

The invention provides a multi-frequency array antenna, which not only can effectively realize high integration of antenna arrays of different systems, but also can effectively solve mutual coupling among frequency bands, realize integration, miniaturization and light weight of the multi-frequency antenna, and finally realize the low-cost target of the multi-frequency array antenna.

In addition, the embodiment of the invention also provides a base station, which adopts the multi-frequency array antenna to meet the working requirements of different frequency bands and realize light weight.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.