Sensitivity and inductance integrated 5G-A base station antenna

Abstract

The invention discloses a communication and sensing integrated 5G-A base station antenna which comprises a reflecting plate, a communication module, a sensing module, a feed network assembly, a phase shifter assembly and an antenna housing. The communication module is arranged on the reflecting plate, and the communication module comprises a plurality of dual-polarized oscillators and is used for transmitting wave beams; the sensing module is arranged on the reflecting plate, and the sensing module comprises a plurality of single-polarized oscillators and is used for receiving reflected wave beams reflected by a sensing object on the transmitted wave beams; the feed network assembly is arranged on the reflecting plate and is connected with the communication module and the sensing module; the phase shifter assembly is connected among the feed network assembly, the communication module and the sensing module; the antenna housing covers the communication module, the sensing module, the feed network assembly and the phase shifter assembly and is connected with the reflecting plate; through the above structure, the antenna is suitable for a 5.5 G communication system, achieves the integrated design of communication and sensing, and overcomes the defect of a single communication mode of a conventional base station antenna.

Description

Technical Field

[0001] The present invention relates to the field of base station antennas, and in particular to a synaesthesia-integrated 5G-A base station antenna. Background Art

[0002] In the 5G era, MIMO antenna systems were designed to increase communication capacity, further solving the demand for surging mobile data traffic. In April 2021, the International Organization for Standardization 3GPP announced 5G-Advanced as the official name of 5G evolution, marking a new stage in the development of global 5G technology and standards. 5G-Advanced will set new goals and capabilities for 5G development after 2024, and enhance the social and economic value of 5G through comprehensive evolution and optimization.

[0003] The 5G spectrum can be divided into two sub-areas, the FR1 area and the FR2 area. The frequency band range of the FR1 area is 450MHz to 6GHz, which is commonly referred to as Sub-6G. The spectrum range of the FR2 area is from 24GHz to 52GHz. The spectrum wavelength in this area is at the millimeter wave level, also known as the millimeter wave band. Due to the strong diffraction ability of the Sub6G band itself, the resources have the greatest development potential and are the main frequency band for the development of 5G networks. At present, the 4.9GHz band is mainly used in hot spots and high-traffic areas. Since the 4.9GHz band has independent and clean resources in the wireless environment, in business scenarios with high uplink and downlink requirements, the use of the 4.9GHz network can improve the uplink and downlink capacity configuration, so that the 4.9GHz and 2.6GHz networks can develop in a coordinated manner and give full play to their maximum potential.

[0004] Synesthesia integration is an important part of 5G-A. Synesthesia integration system technology can integrate sensing and communication functions, improve spectrum efficiency and energy efficiency by utilizing common spectrum, hardware platform and signal processing framework, thereby solving spectrum congestion problems and reducing hardware and signaling costs. In addition, through collaborative design, the synesthesia integration system can realize communication-assisted sensing and sensing-assisted communication, which can greatly improve sensing and communication performance. Thanks to the above advantages, the synesthesia integration system can provide the ability to perceive the physical world at any place and time.

[0005] Existing base station antennas are usually composed of antenna units, isolation strips, feeding networks, reflectors and other parts, while traditional 5G base station antennas realize a single communication function and cannot adapt to the communication and perception integration requirements of the 5G-A era. Therefore, there is an urgent need for a 5G-A base station antenna with integrated perception, which integrates the antenna communication module and the perception module to replace the single communication form of the traditional MIMO antenna. Summary of the invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a synaesthesia integrated 5G-A base station antenna.

[0007] The technical solution adopted by an embodiment of the present invention to solve its technical problem is: a synaesthesia integrated 5G-A base station antenna, including a reflector, a communication module, a sensing module, a feed network component, a phase shifter component and a radome;

[0008] The communication module is arranged on the reflection plate, and the communication module comprises a plurality of dual-polarization oscillators for transmitting beams;

[0009] The sensing module is arranged on the reflection plate, and the sensing module comprises a plurality of single-polarization oscillators, and is used for receiving a reflected beam reflected by the sensing object to the transmitted beam;

[0010] The feeding network component is arranged on the reflection plate and connected with the communication module and the sensing module;

[0011] The phase shifter component is connected between the feeding network component and the communication module and the sensing module;

[0012] The antenna cover is arranged on the communication module, the sensing module, the feeding network component and the phase shifter component and is connected to the reflection plate.

[0013] As one of the preferred embodiments of the present invention, the dual-polarization oscillator includes a first sheet metal radiation surface and a first sheet metal feeding foot that is integrally stamped from the first sheet metal radiation surface.

[0014] As one of the preferred embodiments of the present invention, the single-polarization oscillator includes a second sheet metal radiation surface and a second sheet metal feeding foot that is integrally stamped and formed from the second sheet metal radiation surface.

[0015] As one of the preferred embodiments of the present invention, the feed network component includes a first power divider, a second power divider, a plurality of differential microstrip lines and a plurality of phase extension lines;

[0016] One output end of the first power divider is connected to the communication module via a differential microstrip line, and the other output end is connected to the communication module via a phase shifter component and a differential microstrip line;

[0017] One output end of the second power divider is connected to the sensing module via a phase extension line, and the other output end is connected to the sensing module via a phase shifter component and the phase extension line.

[0018] As one of the preferred embodiments of the present invention, the first power divider has an input port and six output ports, one of the output ports is connected to the communication module via a differential microstrip line, and the other five of the output ports are connected to the communication module via a phase shifter component and a differential microstrip line.

[0019] As one of the preferred embodiments of the present invention, the second power divider has an input port and three output ports, one of the output ports is connected to the communication module via a phase extension line, and the other two of the output ports are connected to the communication module via a phase shifter component and a phase extension line.

[0020] As one of the preferred embodiments of the present invention, the phase shifter component includes a first phase shifter connected between the communication module and the feeding network component and a second phase shifter connected between the sensing module and the feeding network component.

[0021] As one of the preferred embodiments of the present invention, the first phase shifter and / or the second phase shifter comprises a first switch, a second switch and a plurality of microstrip delay lines;

[0022] The first switch is respectively connected to one end of the microstrip delay line and the feed network component and receives a control signal;

[0023] The second switch is respectively connected to the other end of the microstrip delay line and the communication module or the sensing module and receives the control signal;

[0024] The first switch and the second switch can connect the feeding network component and the communication module or the sensing module through different microstrip delay lines according to the control signal.

[0025] As one of the preferred embodiments of the present invention, an isolation strip is provided between dual-polarization dipoles, between single-polarization dipoles, and / or between a dual-polarization dipole and a single-polarization dipole.

[0026] As one of the preferred embodiments of the present invention, the isolation strip and the reflective plate are integrally formed.

[0027] The beneficial effects of the present invention are as follows: a synaesthesia integrated 5G-A base station antenna, comprising a reflector, a communication module, a perception module, a feed network component, a phase shifter component and an antenna cover; the communication module is arranged on the reflector, and the communication module includes a plurality of dual-polarization vibrators for transmitting beams; the perception module is arranged on the reflector, and the perception module includes a plurality of single-polarization vibrators for receiving reflected beams reflected by the perception object to the transmitted beams; the feed network component is arranged on the reflector and connected to the communication module and the perception module; the phase shifter component is connected between the feed network component and the communication module and the perception module; the antenna cover is arranged on the communication module, the perception module, the feed network component and the phase shifter component and connected to the reflector; the above structure is applicable to the 5.5G communication system, realizes the integrated design of communication and perception, and makes up for the deficiency of the single communication mode of the traditional base station antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 It is a schematic diagram of the first part of the structure of a synaesthesia integrated 5G-A base station antenna;

[0030] Figure 2 It is a schematic diagram of the second part of the structure of a synaesthesia integrated 5G-A base station antenna;

[0031] Figure 3 is a schematic diagram of the first structure of a dual-polarization oscillator;

[0032] Figure 4 is a second structural schematic diagram of a dual-polarization oscillator;

[0033] Figure 5 It is a schematic diagram of the connection between the differential microstrip line and the dual-polarization oscillator;

[0034] Figure 6 It is a schematic diagram of the third part of the structure of a synaesthesia-integrated 5G-A base station antenna;

[0035] Figure 7 is a schematic diagram of the first structure of a single-polarized oscillator;

[0036] Figure 8 is a second structural schematic diagram of a single-polarized oscillator;

[0037] Fig. 9 It is a schematic diagram of the connection between the phase extension line and the single polarization oscillator;

[0038] Fig.10 is a schematic diagram of the connection between the first power divider, the first phase shifter and the dual-polarization oscillator;

[0039] Fig.11 is a schematic diagram of the connection between the second power divider, the second phase shifter and the single-polarization oscillator;

[0040] Fig.12 is a schematic diagram of a first phase shifter or a second phase shifter. DETAILED DESCRIPTION

[0041] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0042] In the description of the present invention, the meaning of "above", "below", "exceed", etc. is not inclusive of the number itself, and the meaning of "above", "below", "within", etc. is inclusive of the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0043] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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 therefore should not be understood as a limitation on the present invention.

[0044] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0045] Reference Figures 1 to 12 , a synaesthesia integrated 5G-A base station antenna, comprising a reflector 100, a communication module 200, a sensing module 300, a feed network component 400, a phase shifter component 500 and a radome;

[0046] The communication module 200 is disposed on the reflector 100 , and the communication module 200 includes a plurality of dual-polarization oscillators 210 for transmitting beams;

[0047] The sensing module 300 is disposed on the reflector 100 , and includes a plurality of single-polarization oscillators 310 , which are used to receive a reflected beam reflected by a sensing object from a transmitted beam;

[0048] The feeding network component 400 is disposed on the reflection plate 100 and connected to the communication module 200 and the sensing module 300;

[0049] The phase shifter component 500 is connected between the feed network component 400 and the communication module 200 and the sensing module 300;

[0050] The antenna cover is disposed on the communication module 200 , the sensing module 300 , the feeding network component 400 and the phase shifter component 500 and is connected to the reflection plate 100 .

[0051] 1) A synaesthesia integrated 5G-A base station antenna provided by the present invention is applied to a synaesthesia integrated communication system, and the base station antenna includes a radome, a communication module 200, a sensing module 300, an isolation strip 700, a feed network component 400, and a phase shifter component 500;

[0052] Among them, the vibrator in the communication module 200 is a dual-polarized sheet metal structure, and the vibrator in the sensing module 300 is a single-polarized sheet metal structure, both of which adopt a miniaturized design and can achieve high gain, low profile and large angle scanning;

[0053] The front stage of the feed network component 400 adopts a stripline power divider, and the rear stage is connected to the dual-polarization oscillator 210 through a differential microstrip line 430 and is connected to the single-polarization oscillator 310 through a phase extension line 440;

[0054] The phase shifter component 500 is located between the feeding network component 400 and the dipole, and is used to change the phase between the dipoles.

[0055] 2)Reference Figure 2-Figure 9 Specifically, the dual-polarization oscillator 210 includes a first sheet metal radiation surface 211 and a first sheet metal feeding foot 212 integrally stamped from the first sheet metal radiation surface 211; and the single-polarization oscillator 310 includes a second sheet metal radiation surface 311 and a second sheet metal feeding foot 312 integrally stamped from the second sheet metal radiation surface 311;

[0056] The dual-polarized dipole 210 has four slots on the first sheet metal radiation surface 211, and the metal sheet formed by the slots is bent to serve as the feeding structure and supporting structure of the antenna (the first sheet metal feeding pin 311). In order to obtain a stable directional pattern characteristic, the feeding pins on the 45-degree diagonal are differentially fed, that is, a differential microstrip line 430; further, by setting a downwardly bent chamfer 213 on the edge of the first sheet metal radiation surface 211, the volume of the dipole can be reduced without affecting the performance of the dipole, which is conducive to the miniaturization of the antenna;

[0057] The single-polarization oscillator 310 has four slots on the second sheet metal radiation surface 311, and the metal sheet formed by the slots is bent to serve as the feeding structure and supporting structure of the antenna (the second sheet metal feeding pin 312). In order to obtain stable radiation pattern characteristics, the feeding pin on the 45-degree diagonal line is differentially fed, that is, the phase extension line 440.

[0058] 3)Reference Figure 2 , Figure 6 as well as Figure 10-11The feeding network component 400 includes a first power divider 410, a second power divider 420, a plurality of differential microstrip lines 430 and a plurality of phase extension lines 440; one output end of the first power divider 410 is connected to the communication module 200 via the differential microstrip line 430, and the other output end is connected to the communication module 200 via the phase shifter component 500 and the differential microstrip line 430; one output end of the second power divider 420 is connected to the sensing module 300 via the phase extension line 440, and the other output end is connected to the sensing module 300 via the phase shifter component 500 and the phase extension line 440.

[0059] The feed network component 400 adopts a multilayer board structure, the front stage of the feed network component 400 is composed of a stripline power divider, the dual-polarized vibrator 210 adopts a one-to-six structure, and the single-polarized vibrator 310 adopts a one-to-three structure. In order to obtain the maximum gain, the dual-polarized vibrators 210 and the single-polarized vibrators 310 are connected in parallel; refer to Figure 2 For the communication module 200, the six dual-polarization oscillators 210 are combined into an independent array, that is, a one-to-six structure. The first power divider 410 has an input port and six output ports. One of the output ports is connected to the communication module 200 via a differential microstrip line 430, and the other five of the output ports are connected to the communication module 200 via a phase shifter component 500 and the differential microstrip line 430; the first power divider 410 is provided with an input port and six output ports, one of the output ports is directly connected to a dual-polarization oscillator 210 and used as a phase reference point, and the remaining five ports are first connected to the first phase shifter 500a, and the first phase shifter 500a is then connected to the dual-polarization oscillator 210. The first phase shifter 500a plays a role in changing the phase between the dual-polarization oscillators 210, thereby realizing the beam scanning function of the array.

[0060] Reference Fig.10 For the sensing module 300, the three single-polarized oscillators 310 are combined into an independent array, that is, a one-to-three structure. The second power divider 420 has an input port and three output ports. One of the output ports is connected to the communication module 200 via a phase extension line 440, and the other two of the output ports are connected to the communication module 200 via a phase shifter component 500 and a phase extension line 440. The second power divider 420 is provided with an input port and three output ports, one of which is directly connected to a single-polarized oscillator 310 and serves as a phase reference point, and the remaining two ports are first connected to the second phase shifter 500b, and the second phase shifter 500b is then connected to the single-polarized oscillator 310. The second phase shifter 500b plays a role in changing the phase between the single-polarized oscillators 310, thereby realizing the beam scanning function of the array.

[0061] 4)Reference Fig.12The phase shifter component 500 includes a first phase shifter 500 a connected between the communication module 200 and the feeding network component 400 and a second phase shifter 500 b connected between the sensing module 300 and the feeding network component 400 .

[0062] Preferably, the first phase shifter 500a and / or the second phase shifter 500b include a first switch 510, a second switch 520 and a plurality of microstrip delay lines 530; the first switch 510 is respectively connected to one end of the microstrip delay line 530 and the feeding network component 400 and is connected to a control signal; the second switch 520 is respectively connected to the other end of the microstrip delay line 530 and the communication module 200 or the sensing module 300 and is connected to a control signal; the first switch 510 and the second switch 520 can connect the feeding network component 400 and the communication module 200 or the sensing module 300 through different microstrip delay lines 530 according to the control signal.

[0063] Specifically, the phase shifter is a digital phase shifter. Taking the first phase shifter 500a as an example, it is composed of a first switch 510, a second switch 520 and a microstrip delay line 530, one end of which is connected to the output port of the feed network component 400, and the other end is connected to the differential microstrip line 430 of the dual-polarization dipole 210. To achieve the phase shifting function, the required phase difference is calculated according to the vertical beam inclination of the antenna, and then the length of the microstrip delay line 530 is obtained. Different lengths correspond to different phase delays. By controlling the on and off of the first switch 510 and the second switch 520, different microstrip delay lines 530 are selected, and finally the phase difference between the dual-polarization dipole 210 is achieved, thereby realizing antenna beam scanning; in some embodiments, the digital phase shifter is located in the upper and lower layers of the feed network board in the communication module 200, respectively, and is connected to the dipoles in the two polarization directions respectively.

[0064] 5)Reference Figure 1-Figure 2 , Figure 6 An isolation strip 700 is provided between the dual-polarization vibrators 210, between the single-polarization vibrators 310, and / or between the dual-polarization vibrators 210 and the single-polarization vibrators 310; the isolation strip 700 and the reflector 100 are integrally formed; the isolation strip 700 and the reflector 100 are integrally die-cast, which avoids the process of separate welding of the traditional microstrip isolation strip, and the integrated molding is more solid, which is beneficial to improving the stability of the antenna.

[0065] 6) The advantages of the present invention are: it is applicable to 5.5G communication systems, realizes integrated design of communication and perception, and makes up for the shortcomings of the single communication mode of traditional base station antennas; the feeding network component and the vibrator are not coplanar, which can eliminate the coupling effect of the feeding network component on the vibrator; the use of digital phase shifters can greatly reduce the cost compared to TR components; the vibrator and isolation strip structure adopts sheet metal die-casting, which is low in cost, high in reliability, and suitable for large-scale production.

[0066] Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A synaesthesia integrated 5G-A base station antenna, characterized in that: It comprises a reflection plate (100), a communication module (200), a sensing module (300), a feeding network component (400), a phase shifter component (500) and a radome; The communication module (200) is arranged on the reflection plate (100), and the communication module (200) comprises a plurality of dual-polarization oscillators (210) for transmitting beams; The sensing module (300) is arranged on the reflecting plate (100), and the sensing module (300) comprises a plurality of single-polarization oscillators (310) for receiving a reflected beam reflected by a sensing object from a transmitted beam; The feed network component (400) is arranged on the reflection plate (100) and is connected to the communication module (200) and the sensing module (300); The phase shifter component (500) is connected between the feed network component (400) and the communication module (200) and the sensing module (300); The antenna cover is disposed on the communication module (200), the sensing module (300), the feeding network component (400) and the phase shifter component (500), and is connected to the reflection plate (100).

2. The synaesthesia integrated 5G-A base station antenna according to claim 1, characterized in that: The dual-polarization oscillator (210) comprises a first sheet metal radiation surface (211) and a first sheet metal feeding foot (212) formed by integrally stamping the first sheet metal radiation surface (211).

3. According to the synaesthesia integrated 5G-A base station antenna of claim, it is characterized by: The single-polarization oscillator (310) comprises a second sheet metal radiation surface (311) and a second sheet metal feeding foot (312) formed by integrally stamping the second sheet metal radiation surface (311).

4. The synaesthesia integrated 5G-A base station antenna according to claim 1, characterized in that: The feed network component (400) comprises a first power divider (410), a second power divider (420), a plurality of differential microstrip lines (430) and a plurality of phase extension lines (440); One output end of the first power divider (410) is connected to the communication module (200) via the differential microstrip line (430), and the other output end is connected to the communication module (200) via the phase shifter component (500) and the differential microstrip line (430); One output end of the second power divider (420) is connected to the sensing module (300) via the phase extension line (440), and the other output end is connected to the sensing module (300) via the phase shifter component (500) and the phase extension line (440).

5. The synaesthesia integrated 5G-A base station antenna according to claim 4, characterized in that: The first power divider (410) has an input port and six output ports, one of the output ports is connected to the communication module (200) via the differential microstrip line (430), and the other five of the output ports are connected to the communication module (200) via the phase shifter component (500) and the differential microstrip line (430).

6. The synaesthesia integrated 5G-A base station antenna according to claim 4, characterized in that: The second power divider (420) has an input port and three output ports, one of the output ports is connected to the communication module (200) via the phase extension line (440), and the other two of the output ports are connected to the communication module (200) via the phase shifter component (500) and the phase extension line (440).

7. The synaesthesia integrated 5G-A base station antenna according to claim 1, characterized in that: The phase shifter component (500) comprises a first phase shifter (500a) connected between the communication module (200) and the feed network component (400) and a second phase shifter (500b) connected between the sensing module (300) and the feed network component (400).

8. The synaesthesia integrated 5G-A base station antenna according to claim 7, characterized in that: The first phase shifter (500a) and / or the second phase shifter (500b) comprises a first switch (510), a second switch (520) and a plurality of microstrip delay lines (530); The first switch (510) is respectively connected to one end of the microstrip delay line (530) and the feed network component (400) and receives a control signal; The second switch (520) is respectively connected to the other end of the microstrip delay line (530) and the communication module (200) or the sensing module (300) and receives a control signal; The first switch (510) and the second switch (520) can enable the feed network component (400) to communicate with the communication module (200) or the sensing module (300) through different microstrip delay lines (530) according to a control signal.

9. The synaesthesia integrated 5G-A base station antenna according to claim 1, characterized in that: An isolation strip (700) is provided between the dual-polarization oscillators (210), between the single-polarization oscillators (310), and / or between the dual-polarization oscillators (210) and the single-polarization oscillators (310).

10. The synaesthesia integrated 5G-A base station antenna according to claim 9, characterized in that: The isolation strip (700) and the reflection plate (100) are integrally formed.

Images