CN212908106U - Large-scale dense array antenna applied to 5G communication - Google Patents
Large-scale dense array antenna applied to 5G communication Download PDFInfo
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- CN212908106U CN212908106U CN202021999314.4U CN202021999314U CN212908106U CN 212908106 U CN212908106 U CN 212908106U CN 202021999314 U CN202021999314 U CN 202021999314U CN 212908106 U CN212908106 U CN 212908106U
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Abstract
A large-scale dense array antenna applied to 5G communication mainly comprises an antenna housing, an antenna array, a calibration network and a supporting baseplate; the antenna array comprises four flexibly spliced sub-modules which are respectively composed of a radiation unit, a feed function sub-plate, a feed adapter sheet, an isolation plate and the like; the calibration network comprises two sub-modules which can be spliced and respectively consists of a coupling calibration plate, a radio frequency connector, a chip resistor and the like; the antenna array and the calibration network are respectively fixed on the front side and the back side of the supporting base plate through fastening rivets, and signal switching conduction between corresponding ports of the antenna array and the calibration network is realized through the feed switching piece. The utility model adopts the modularized splicing design to simplify the operation process and improve the consistency of the electrical indexes and the production efficiency; the utility model discloses have excellent port uniformity, ensured the three-dimensional space beam forming precision of antenna, and then improve wireless communication system capacity by a wide margin, satisfy the needs of 5G communication system work.
Description
Technical Field
The utility model belongs to the technical field of mobile communication and wireless communication, concretely relates to be applied to extensive intensive battle array antenna of 5G communication.
Background
In recent years, the rapid development of wireless communication technology and the maturity of 4G network coverage are achieved, and various communication applications are emerging continuously, which greatly affect various industries of society and drive the rapid growth of wireless data related industries, such as artificial intelligence, unmanned driving, big data acquisition, VR virtual reality, internet of things and the like, and the communication applications require real-time transmission, stable and reliable communication quality and generate a large amount of data, which puts higher technical requirements on a communication system.
In order to meet the increasing requirements of mass data and high-speed, low-delay and stable communication quality, the next generation communication system, i.e., 5G communication, has gradually become a research hotspot in the mobile communication industry. A large-scale array antenna system (Massive MIMO) which is one of the core technologies of the 5G communication system can serve a plurality of users on the same time-frequency resource by using a Space Division Multiple Access (SDMA) technology, and simultaneously, the large array gain and the interference suppression gain brought by the large-scale antenna array are used, so that the total frequency spectrum gain of a cell and the frequency spectrum efficiency of edge users are greatly improved.
At present, the research on the large-scale array antenna for 5G communication also faces many problems and challenges, for example, the miniaturization and customization trends of the communication equipment impose great limitations on the size and the shape of the antenna, and how to implement the requirement of the communication system on the performance index of the antenna in a limited space is a challenge for all researchers.
The existing large-scale array antenna has some technical difficulties in design, such as: the increase of antenna array elements causes the complexity of an antenna array surface structure to bring challenges to batch production and consistency; the reduction of the array element spacing brings the deterioration of isolation indexes and the distortion of a directional diagram; the increase in the number of antenna ports makes the port consistency index difficult to achieve.
Therefore, it is an urgent need to design an antenna with simple structure, stable performance, and excellent electrical parameter characteristics such as directional diagram, etc., which is applied to 5G communication large-scale dense array.
Disclosure of Invention
For overcoming the not enough among the above-mentioned prior art, the utility model aims to provide a be applied to 5G communication's extensive intensive array antenna.
In order to achieve the above objects and other related objects, the present invention provides a technical solution: a large-scale dense array antenna applied to 5G communication comprises an antenna housing, an antenna array, a calibration network and a support baseplate from top to bottom in sequence; the antenna array comprises four sub-array modules which can be spliced and respectively consists of a radiation unit, a feed function sub-plate, a feed adapter plate, an isolation plate and the like; the calibration network comprises two sub-modules which can be spliced and respectively consists of a coupling calibration plate, a radio frequency connector and a chip resistor; the antenna array and the calibration network are respectively fixed on the front side and the back side of the supporting base plate through fastening rivets, and signal switching conduction between corresponding ports of the antenna array and the calibration network is realized through the feed switching piece.
The preferable technical scheme is as follows: the antenna array is composed of four independent sub-array modules which can be flexibly spliced in the vertical direction, and the center distances among the sub-array modules are the same.
The preferable technical scheme is as follows: the sub-array modules comprise more than two identical antenna sub-arrays which are arranged in parallel or in a staggered mode in the horizontal direction, and the arrangement intervals between the antenna sub-arrays are the same.
The preferable technical scheme is as follows: the antenna subarray comprises 1-3 antenna array elements and corresponding feed power distribution networks, the antenna array elements are linearly arranged in the vertical direction, the spacing between the antenna array elements is the same, and each antenna array element comprises two orthogonal +/-45-degree polarization ports.
The preferable technical scheme is as follows: the antenna subarray is positioned above the feed power division network, and antenna array elements in the antenna subarray are connected with the feed power division network in a plug-in mode; each antenna array element in the antenna subarray has a specific amplitude and phase forming weight, and the phase forming weight is realized through a feed power division network connected with the phase forming weight, so that initial beam forming of the antenna subarray is formed.
The preferable technical scheme is as follows: the calibration network consists of two sub-modules which can be independently spliced, namely a calibration module I and a calibration module II; concave-convex splicing grooves are formed in the edges, spliced and tangent to each other, of the first calibration module and the second calibration module; the concave-convex splicing grooves are used for controlling the accurate positioning of the first calibration module and the second calibration module in the horizontal and vertical directions.
The preferable technical scheme is as follows: the coupling calibration plate of the calibration network is a PCB (printed Circuit Board), a green oil layer is arranged on a metal ground copper-clad area on the front surface of the coupling calibration plate, and a port connector and the chip resistor are welded on a bonding pad area on the front surface of the coupling calibration plate; and a tin coating is arranged on the metal ground copper-clad area on the reverse side of the coupling calibration plate, and the reverse side of the coupling calibration plate is connected with the supporting bottom plate.
The preferable technical scheme is as follows: the front surface of the first calibration module is provided with a calibration port connector CAL-A and two groups of antenna port connectors; the front surface of the calibration module II is provided with a calibration port connector CAL-B and two groups of antenna port connectors; each group of antenna port connectors are horizontally arranged and the number of the antenna port connectors is more than 4.
The preferable technical scheme is as follows: the sub-array modules of the antenna array are a first array module, a second array module, a third array module and a fourth array module from left to right in sequence, the first array module and the second array module are connected with the first calibration module, and the third array module and the fourth array module are connected with the second calibration module; the antenna subarrays and the antenna end connector are the same in number and are arranged in a one-to-one correspondence mode.
The preferable technical scheme is as follows: the supporting bottom plate is positioned between the antenna array and the calibration network and is tightly connected with the antenna array and the calibration network through fixing rivets; the support bottom plate is provided with a radiation unit grounding avoidance hole, a connector and resistance pad avoidance hole and a feed switching sheet embedded avoidance hole.
The preferable technical scheme is as follows: the feed adaptor is a PCB (printed Circuit Board) and is respectively inserted into the feed function sub-board and the coupling calibration board, and the number of the feed adaptor is the same as that of the antenna terminal connectors; the front surface and the back surface of the feed adapter plate are both provided with metal copper-clad areas; one end of the front metal copper-clad area is connected with a main port of the feed power distribution network module, and the other end of the front metal copper-clad area is connected with a corresponding port of the sub-module, so that signal switching and intercommunication are realized; and the metal copper-clad areas on the back side are respectively connected with the metal ground copper-clad areas of the power feeding functional sub-board and the coupling calibration board, so that the common ground of signals is realized.
The preferable technical scheme is as follows: the isolating plate is provided with a plurality of sections of inserting pieces, and the isolating plate is inserted and welded on the feeding functional sub-plate through the inserting pieces.
Because of the application of the technical scheme, compared with the prior art, the utility model the advantage that has is:
the utility model adopts the modularized splicing design to simplify the operation process and improve the consistency of the electrical indexes and the production efficiency; the circuit parameter characteristics and the directional diagram radiation characteristics can still be good in different application scenes, and the requirements of a 5G communication system on the antenna performance are met; the utility model discloses have excellent port uniformity, guaranteed the three-dimensional space beam shaping precision of antenna, and then improve wireless communication system capacity by a wide margin, satisfy the needs of 5G communication system work; the port has the characteristics of reliable structure, simple process, moderate cost, stable performance, excellent index and good port consistency, and meets the requirement of batch production.
Drawings
Fig. 1 is an explosion diagram of the present invention.
Fig. 2 is a schematic diagram of the sub-array module and the sub-module.
Fig. 3 is a schematic diagram of a sub-array module.
Fig. 4 is a sub-module schematic.
Fig. 5 is a schematic view of the installation of the radiating element and the feeding power dividing board.
Fig. 6 is an installation schematic diagram of the feed function sub-board, the coupling calibration board and the feed patch.
FIG. 7 is a schematic view of the installation of the coupling calibration plate with the port connector.
Fig. 8 is a front view schematically illustrating the present invention.
Fig. 9 is a schematic side view of the present invention.
Fig. 10 is a rear view of the present invention.
Fig. 11 is a schematic top view of the present invention.
FIG. 12 is a schematic sectional view A-A.
In the above drawings, the radome 1, the antenna array 2, the feeding splitter 21, the radiation unit 22, the feeding patch 23, the sub-array module 24, the antenna sub-array 241, the antenna array element 242, the first array module 243, the second array module 244, the third array module 245, the fourth array module 246, the supporting base plate 3, the calibration network 4, the sub-module 41, the coupling calibration plate 411, the port connector 412, the first calibration module 414, the second calibration module 415, the male die 416, and the groove 417.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1 to 12. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Example (b): as shown in fig. 1 to 12, a large-scale dense array antenna applied to 5G communication includes, in order from top to bottom, an antenna cover 1, an antenna array 2, a calibration network 4, and a support base plate 3; the antenna array 2 comprises four sub-array modules 24 which can be spliced and respectively comprise a radiation unit 22, a feed power dividing plate 21, a feed adapter plate 23, an isolation plate and the like; the calibration network 4 comprises two sub-modules 41 which can be spliced and respectively composed of a coupling calibration plate 411, a radio frequency connector and a chip resistor; the antenna array 2 and the calibration network 4 are respectively fixed on the front and the back of the support base plate 3 through fastening rivets, and signal switching conduction between corresponding ports of the antenna array 2 and the calibration network 4 is realized through the feed switching piece 23.
The preferred embodiment is: as shown in fig. 3, the antenna array 2 is composed of four independent sub-array modules 24 that can be flexibly spliced in the vertical direction, and the center distances between the sub-array modules 24 are the same.
The preferred embodiment is: as shown in fig. 2, each of the sub-array modules 24 includes two or more identical antenna sub-arrays 241, the antenna sub-arrays 241 are arranged in parallel or in a staggered manner in the horizontal direction, and the arrangement pitches between the antenna sub-arrays 241 are the same.
The preferred embodiment is: as shown in fig. 2, the antenna subarray 241 includes 1-3 antenna elements 242 and corresponding feed power dividing networks, the antenna elements 242 are linearly arranged in the vertical direction, the intervals of the antenna elements 242 are the same, and each antenna element 242 includes two orthogonal ± 45 ° polarization ports.
The preferred embodiment is: the antenna subarray 241 is located above the feed power division network, and antenna array elements 242 in the antenna subarray 241 are connected with the feed power division network in a plug-in mode; each antenna array element 242 in the antenna subarray 241 has its specific amplitude and phase forming weight, and the phase forming weight is realized by a feed power division network connected thereto, so as to form initial beam forming of the antenna subarray 241.
The preferred embodiment is: as shown in fig. 4, the calibration network 4 is composed of two sub-modules 41 which can be independently spliced, namely a calibration module one 414 and a calibration module two 415; concave-convex splicing grooves are formed in the splicing tangent edges of the first calibration module 414 and the second calibration module 415; the concave-convex splicing grooves are used for controlling the accurate positioning of the first calibration module 414 and the second calibration module 415 in the horizontal and vertical directions. The right end of the first calibration module 414 is provided with a male die 416, and the left end of the second calibration module 415 is provided with a groove 417 which can be spliced with the male die 416. The 'concave-convex splicing groove' formed after splicing is used for controlling the accurate positioning of the first calibration module 414 and the second calibration module 415 in the horizontal and vertical directions.
The preferred embodiment is: a coupling calibration board 411 of the calibration network 4 is a PCB board, a green oil layer is arranged on a metal ground copper-clad area on the front surface of the coupling calibration board 411, and a port connector 412 and a chip resistor are welded on a pad area on the front surface of the coupling calibration board 411; the metal ground copper-clad area of the reverse side of the coupling calibration plate 411 is provided with a tin coating, and the reverse side of the coupling calibration plate 411 is connected with the supporting bottom plate 3.
The preferred embodiment is: as shown in fig. 2, the front side of the calibration module one 414 is provided with one calibration port connector 412CAL-a and two sets of antenna port connectors 412; the front surface of the second calibration module 415 is provided with a calibration port connector 412CAL-B and two groups of antenna port connectors 412; each set of antenna port connectors 412 is arranged horizontally and is greater than 4 in number.
The preferred embodiment is: as shown in fig. 3, the sub-array modules 24 of the antenna array 2 are, from left to right, a first array module 243, a second array module 244, a third array module 245 and a fourth array module 246 in sequence, the first array module 243 and the second array module 244 are connected to the first calibration module 414, and the third array module 245 and the fourth array module 246 are connected to the second calibration module 415; the antenna sub-arrays 241 and the antenna end connectors 412 are the same in number and are arranged in one-to-one correspondence with each other.
The preferred embodiment is: the supporting bottom plate 3 is positioned between the antenna array 2 and the calibration network 4 and is tightly connected with the antenna array 2 and the calibration network 4 through fixing rivets; the supporting bottom plate 3 is provided with a grounding avoidance hole of the radiation unit 22, a connector and resistance pad avoidance hole, and an embedded avoidance hole of the feed switching sheet 23.
The preferred embodiment is: the feed adaptor 23 is a PCB board and is respectively inserted into the feed power dividing board 21 and the coupling calibration board 411, and the number of the feed adaptor 23 is the same as that of the antenna port connector 412; the front and back sides of the feed patch 23 are provided with metal copper-clad regions; one end of the front metal copper-clad area is connected with a main port of the feed power distribution network module, and the other end of the front metal copper-clad area is connected with a corresponding port of the sub-module 41, so that signal switching and intercommunication are realized; the metal copper-clad areas on the back side are respectively connected with the metal ground copper-clad areas of the power feeding division plate 21 and the coupling calibration plate 411, so that signal common ground is realized.
The preferred embodiment is: the partition plate is provided with a plurality of sections of inserting pieces, and the partition plate is inserted and welded on the feeding functional sub-plate 21 through the inserting pieces.
The utility model adopts the modularized splicing design to simplify the operation process and improve the consistency of the electrical indexes and the production efficiency; the circuit parameter characteristics and the directional diagram radiation characteristics can still be good in different application scenes, and the requirements of a 5G communication system on the antenna performance are met; the utility model discloses have excellent port uniformity, guaranteed the three-dimensional space beam shaping precision of antenna, and then improve wireless communication system capacity by a wide margin, satisfy the needs of 5G communication system work; the port has the characteristics of reliable structure, simple process, moderate cost, stable performance, excellent index and good port consistency, and meets the requirement of batch production.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (12)
1. A large-scale dense array antenna applied to 5G communication is characterized in that: the antenna comprises an antenna housing, an antenna array, a calibration network and a support bottom plate from top to bottom in sequence; the antenna array comprises four sub-array modules which can be spliced and respectively consists of a radiation unit, a feed function sub-plate, a feed adapter plate, an isolation plate and the like; the calibration network comprises two sub-modules which can be spliced and respectively consists of a coupling calibration plate, a radio frequency connector and a chip resistor; the antenna array and the calibration network are respectively fixed on the front side and the back side of the supporting base plate through fastening rivets, and signal switching conduction between corresponding ports of the antenna array and the calibration network is realized through the feed switching piece.
2. The massive dense array antenna applied to 5G communication as claimed in claim 1, wherein: the antenna array is composed of four independent sub-array modules which can be flexibly spliced in the vertical direction, and the center distances among the sub-array modules are the same.
3. The massive dense array antenna applied to 5G communication as claimed in claim 2, wherein: the sub-array modules comprise more than two identical antenna sub-arrays which are arranged in parallel or in a staggered mode in the horizontal direction, and the arrangement intervals between the antenna sub-arrays are the same.
4. The massive dense array antenna applied to 5G communication as claimed in claim 3, wherein: the antenna subarray comprises 1-3 antenna array elements and corresponding feed power distribution networks, the antenna array elements are linearly arranged in the vertical direction, the spacing between the antenna array elements is the same, and each antenna array element comprises two orthogonal +/-45-degree polarization ports.
5. The massive dense array antenna applied to 5G communication as claimed in claim 4, wherein: the antenna subarray is positioned above the feed power division network, and antenna array elements in the antenna subarray are connected with the feed power division network in a plug-in mode; each antenna array element in the antenna subarray has a specific amplitude and phase forming weight, and the phase forming weight is realized through a feed power division network connected with the phase forming weight, so that initial beam forming of the antenna subarray is formed.
6. The massive dense array antenna applied to 5G communication as claimed in claim 5, wherein: the calibration network consists of two sub-modules which can be independently spliced, namely a calibration module I and a calibration module II; concave-convex splicing grooves are formed in the edges, spliced and tangent to each other, of the first calibration module and the second calibration module; the concave-convex splicing grooves are used for controlling the accurate positioning of the first calibration module and the second calibration module in the horizontal and vertical directions.
7. The massive dense array antenna applied to 5G communication as claimed in claim 6, wherein: the coupling calibration plate of the calibration network is a PCB (printed Circuit Board), a green oil layer is arranged on a metal ground copper-clad area on the front surface of the coupling calibration plate, and a port connector and the chip resistor are welded on a bonding pad area on the front surface of the coupling calibration plate; and a tin coating is arranged on the metal ground copper-clad area on the reverse side of the coupling calibration plate, and the reverse side of the coupling calibration plate is connected with the supporting bottom plate.
8. The massive dense array antenna applied to 5G communication as claimed in claim 7, wherein: the front surface of the first calibration module is provided with a calibration port connector CAL-A and two groups of antenna port connectors; the front surface of the calibration module II is provided with a calibration port connector CAL-B and two groups of antenna port connectors; each group of antenna port connectors are horizontally arranged and the number of the antenna port connectors is more than 4.
9. The massive dense array antenna applied to 5G communication according to claim 8, wherein: the sub-array modules of the antenna array are a first array module, a second array module, a third array module and a fourth array module from left to right in sequence, the first array module and the second array module are connected with the first calibration module, and the third array module and the fourth array module are connected with the second calibration module; the antenna subarrays and the antenna end connector are the same in number and are arranged in a one-to-one correspondence mode.
10. The massive dense array antenna applied to 5G communication according to claim 9, wherein: the supporting bottom plate is positioned between the antenna array and the calibration network and is tightly connected with the antenna array and the calibration network through fixing rivets; the support bottom plate is provided with a radiation unit grounding avoidance hole, a connector and resistance pad avoidance hole and a feed switching sheet embedded avoidance hole.
11. The massive dense array antenna applied to 5G communication according to claim 10, wherein: the feed adaptor is a PCB (printed Circuit Board) and is respectively inserted into the feed function sub-board and the coupling calibration board, and the number of the feed adaptor is the same as that of the antenna terminal connectors; the front surface and the back surface of the feed adapter plate are both provided with metal copper-clad areas; one end of the front metal copper-clad area is connected with a main port of the feed power distribution network module, and the other end of the front metal copper-clad area is connected with a corresponding port of the sub-module, so that signal switching and intercommunication are realized; and the metal copper-clad areas on the back side are respectively connected with the metal ground copper-clad areas of the power feeding functional sub-board and the coupling calibration board, so that the common ground of signals is realized.
12. The massive dense array antenna applied to 5G communication as claimed in claim 11, wherein: the isolating plate is provided with a plurality of sections of inserting pieces, and the isolating plate is inserted and welded on the feeding functional sub-plate through the inserting pieces.
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| CN202021999314.4U CN212908106U (en) | 2020-09-14 | 2020-09-14 | Large-scale dense array antenna applied to 5G communication |
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| CN202021999314.4U CN212908106U (en) | 2020-09-14 | 2020-09-14 | Large-scale dense array antenna applied to 5G communication |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363734A (en) * | 2021-05-13 | 2021-09-07 | 武汉虹信科技发展有限责任公司 | Massive MIMO array antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363734A (en) * | 2021-05-13 | 2021-09-07 | 武汉虹信科技发展有限责任公司 | Massive MIMO array antenna |
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