An antenna system and a communication device

Abstract

The application provides an antenna system and a communication device, relates to the technical field of communication, and aims to solve the problem of large windward area of the antenna system. The antenna system provided by the application comprises a first antenna and a second antenna; the first antenna comprises a first antenna cover, a first radiation component and a feed network, and the second antenna comprises a second antenna cover and a second radiation component; the first antenna cover has a first outer surface, the first outer surface has a groove; the first radiation component is arranged at the side of the groove, and the feed network is arranged in the first antenna cover and connected with the first radiation component; the second antenna cover has a second outer surface, the second radiation component is arranged in the second antenna cover, and at least part of the second outer surface extends into the groove. In the antenna system provided by the application, the first antenna and the second antenna are two independent antennas, and when the two antennas are used in combination, the thickness size is not obviously increased, so that the windward area is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to an antenna system and a communication device. BACKGROUND

[0002] With the development of wireless communication technology, the communication frequency bands that can be supported by a base station are more and more, and the antennas installed on the holding pole are also more and more. Because the positions for installing the antennas on the holding pole are limited, some holding poles cannot accommodate more antennas. Therefore, effectively fusing different antennas gradually becomes a current trend. However, the current fusion manner significantly increases the windward area of the antennas, and therefore needs to be optimized. SUMMARY

[0003] The present application provides an antenna system and a communication device which can effectively reduce the windward area and facilitate flexible collocation.

[0004] In one aspect, the present application provides an antenna system, comprising a first antenna and a second antenna. The first antenna comprises a first antenna cover, a first radiation assembly and a feed network, and the second antenna comprises a second antenna cover and a second radiation assembly. The first antenna cover has a first outer surface, and the first outer surface has a groove. The first radiation assembly is arranged in the first antenna cover and is used for emitting or receiving electromagnetic waves. The feed network is connected with the first radiation assembly, so that the feed network feeds signals to the first radiation assembly according to certain amplitudes and phases. In addition, the feed network is arranged in the first antenna cover and is located at a side of the groove. In addition, the second antenna cover has a second outer surface, the second radiation assembly is arranged in the second antenna cover, and at least a part of the second outer surface can extend into the groove.

[0005] In the antenna system provided by the present application, the first antenna and the second antenna are two independent antennas, and the two antennas can be independently used and can also be used in combination. When the two antennas are used in combination, the thickness dimension is not significantly increased, and therefore the windward area is reduced, thereby improving the use safety. Specifically, because the first antenna cover has the groove and the second outer surface of the second antenna cover can extend into the groove, when the first antenna and the second antenna are combined, the overall thickness is smaller than the sum of the thicknesses of the first antenna and the second antenna, and therefore the thickness dimension of the entire antenna system is reduced. In addition, because the feed network is arranged at the side of the groove, the electromagnetic waves generated by the feed network do not significantly affect the normal work of the second radiation assembly in the second antenna, and therefore the normal work performance of the second antenna is ensured.

[0006] In an implementation, the first antenna can further include a first frequency selective surface. The first frequency selective surface is located between the first radiating component and the second radiating component, and is configured to reflect signals of the first radiating component and to transmit signals of the second radiating component. Through the first frequency selective surface, electromagnetic waves generated by the first radiating component can propagate in a direction away from the first frequency selective surface. In addition, when a portion of the electromagnetic waves propagates to the first frequency selective surface, the portion of the electromagnetic waves can be reflected by the first frequency selective surface, thereby effectively improving the propagation efficiency of the first radiating component. In addition, electromagnetic waves generated by the second radiating component can effectively propagate through the first frequency selective surface, thereby not affecting the normal working performance of the second radiating component.

[0007] In a specific implementation, projections of the first radiating component on the first frequency selective surface can all be located within the first frequency selective surface, thereby enabling the first frequency selective surface to effectively reflect electromagnetic waves generated by the first radiating component.

[0008] In an implementation, the projection of the feed network on the second radiating component can be located outside the second radiating component, thereby effectively preventing the feed network from causing adverse effects such as hindering electromagnetic waves generated by the second radiating component.

[0009] In an implementation, the first antenna can further include a third radiating component. The working frequency band of the third radiating component can be different from the working frequency band of the first radiating component, thereby improving the working frequency band of the first antenna.

[0010] In a specific implementation, the third radiating component and the first radiating component can be located on the same side of the first frequency selective surface. That is, the first frequency selective surface can reflect signals of the first radiating component and the third radiating component, so that electromagnetic waves of the first radiating component and the third radiating component can efficiently propagate in a direction away from the first frequency selective surface.

[0011] In an implementation, the first antenna can further include a second frequency selective surface. The third radiating component and the first radiating component are located on the same side of the second frequency selective surface, and the second frequency selective surface is configured to reflect signals of the first radiating component and the third radiating component and to transmit signals of the second radiating component.

[0012] In a specific implementation, the first frequency selective surface and the second frequency selective surface can be of the same type or different types, which is not limited in the present application.

[0013] In addition, a projection of the third radiating component on the second frequency selective surface can be located within the second frequency selective surface, thereby effectively reflecting electromagnetic waves generated by the third radiating component.

[0014] In the specific setting of the third radiating assembly, the projection of the third radiating assembly on the bottom wall of the groove can be located in the bottom wall. Of course, in another embodiment, the projection of the third radiating assembly on the bottom wall of the groove can also be located outside the bottom wall, which is not limited in the present application.

[0015] In addition, the working frequency band of the first radiating assembly and the third radiating assembly can be smaller than that of the second radiating assembly. The working frequency band of the first radiating assembly can be greater than that of the third radiating assembly, or the working frequency band of the first radiating assembly can be smaller than that of the third radiating assembly. In specific applications, the working frequency bands of the first radiating assembly, the second radiating assembly and the third radiating assembly can be reasonably selected according to actual needs, which is not limited in the present application.

[0016] In addition, in the structure setting of the first radome and the second radome, the second outer surface of the second radome can also be entirely inserted into the groove.

[0017] Or, when the area of the second outer surface is greater than the area of the bottom wall of the groove, the second outer surface can have a protruding part which can be inserted into the groove.

[0018] Among them, the projection of the second radiating unit on the second outer surface can be located in the protruding part to prevent the feed network located on the side of the groove from causing adverse effects such as hindering the second radiating unit.

[0019] In addition, the first radome and the second radome can be connected in a detachable manner to facilitate the combination and separation of the first antenna and the second antenna.

[0020] On the other hand, the present application also provides a communication device comprising any of the above-mentioned antenna systems. Among them, the communication device can be a base station or a radar, etc. The specific type of communication device is not limited in the present application. By equipping the above-mentioned antenna system, the number of antenna systems equipped in the base station can be effectively improved, and the wind area of the communication device will not be significantly increased, which is conducive to large-scale deployment and use. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 An application scenario diagram of an antenna system provided by an embodiment of the present application;

[0022] Figure 2 A structure diagram of a base station antenna feeder system provided by an embodiment of the present application;

[0023] Figure 3 A composition diagram of an antenna system provided by an embodiment of the present application;

[0024] Figure 4A separation structure schematic diagram of an antenna system provided by an embodiment of the present application;

[0025] Figure 5 A-A cross-sectional structure schematic diagram of the antenna system provided by the embodiment of the present application; Figure 4

[0026] Figure 6 A planar structure schematic diagram of a first frequency selective surface provided by an embodiment of the present application;

[0027] Figure 7 A cross-sectional structure schematic diagram of another antenna system provided by an embodiment of the present application;

[0028] Figure 8 A structure schematic diagram of a phase shifter in a feed network provided by an embodiment of the present application;

[0029] Figure 9 A cross-sectional structure schematic diagram of another antenna system provided by an embodiment of the present application;

[0030] Figure 10 A cross-sectional structure schematic diagram of another antenna system provided by an embodiment of the present application;

[0031] Figure 11 A cross-sectional structure schematic diagram of another antenna system provided by an embodiment of the present application;

[0032] Figure 12 A structure schematic diagram of a base station provided by an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings.

[0034] In order to facilitate understanding of the antenna provided by the embodiments of the present application, the application scenarios thereof will be introduced first below.

[0035] The antenna provided by the embodiments of the present application can be applied in a base station, a radar and other communication devices to realize wireless communication functions.

[0036] As Figure 1 ​As shown, this application scenario can include base stations and terminals. Wireless communication can be achieved between the base station and the terminal. The base station can be located in a base station subsystem (BBS), a UMTS (Underground Radio Access Network) terrestrial radio access network (UTRAN), or an evolved terrestrial radio access network (E-UTRAN), used for cell coverage of radio signals to enable communication between the terminal device and the wireless network. Specifically, the base station can be a base transceiver station (BTS) in a Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA) system, a Node B (NB) in a Wideband Code Division Multiple Access (WCDMA) system, an Evolutionary Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, or a radio controller in a cloud radio access network (CRAN) scenario. Alternatively, the base station may be a relay station, access point, vehicle-mounted equipment, wearable device, or a g node (gNodeB or gNB) in a new radio (NR) system, or a base station in a future evolved network, etc., and the embodiments of this application are not limited thereto.

[0037] like Figure 2 As shown in the embodiment of this application, a base station includes a base station antenna feeder system. In practical applications, the base station antenna feeder system mainly includes an antenna system 01, a feeder line 02, and a grounding device 03. The antenna system 01 is generally fixed on a mast 04, and the downtilt angle of the antenna system 01 can be adjusted by adjusting the bracket 05 to adjust the signal coverage range of the antenna system 01 to a certain extent.

[0038] In addition, the base station can further include a radio frequency processing unit 06 and a baseband processing unit 20. For example, the radio frequency processing unit 06 can be configured to perform frequency selection, amplification and down-conversion processing on the signals received by the antenna system 01, and convert the signals into intermediate frequency signals or baseband signals and send the signals to the baseband processing unit 20, or the radio frequency processing unit 06 can be configured to perform up-conversion and amplification processing on the intermediate frequency signals sent by the baseband processing unit 20, and convert the signals into wireless signals and send the signals out through the antenna system 01. The baseband processing unit 20 can be connected to the antenna system 01 through the radio frequency processing unit 06 and a feed network. In some embodiments, the radio frequency processing unit 06 can also be referred to as a remote radio unit (RRU), and the baseband processing unit 20 can also be referred to as a baseband unit (BBU).

[0039] As shown in Figure 2 In one possible embodiment, the radio frequency processing unit 06 can be integrated with the antenna system 01, and the baseband processing unit 20 can be located remotely from the antenna system 01. The radio frequency processing unit 06 and the baseband processing unit 20 can be connected through the feed line 02. In another embodiment, the radio frequency processing unit 06 and the baseband processing unit 20 can also be located remotely from the antenna system 01.

[0040] As shown in Figure 2 and Figure 3 The antenna system 01 applied in the base station can further include a radome 011, a reflector plate 012 and a feed network 013 located in the radome 011, wherein the reflector plate 012 can also be referred to as a bottom plate. The main function of the feed network 013 is to feed signals to the radiation assembly 014 according to certain amplitudes and phases, or send the wireless signals received by the radiation assembly 014 to the baseband processing unit 20 of the base station according to certain amplitudes and phases. It can be understood that in specific implementation, the feed network 013 can include at least one of a phase shifter, a combiner, a transmission or calibration network or a filter, and the present application does not limit the components, types and functions of the feed network 013.

[0041] Of course, the above-mentioned antenna system 01 can also be applied to various other types of communication devices, and the present application does not limit the application scenarios of the antenna system 01.

[0042] As for the radome 011, in terms of electrical performance, the radome 011 has good electromagnetic wave penetration, so as not to affect the normal transmission and reception of electromagnetic waves between the radiation assembly 014 and the outside world. In terms of mechanical performance, the radome 011 has good stress resistance and oxidation resistance, so as to withstand the erosion of the external harsh environment.

[0043] The radiation component 014, also referred to as a vibrator, is a unit constituting the basic structure of the antenna, which can effectively emit or receive electromagnetic waves. The radiation component 014 can include a plurality of vibrators, and the plurality of vibrators can be used in an array. In specific applications, the vibrator can be divided into single-stage and dual-polarization types. In specific configurations, the type of vibrator can be reasonably selected according to actual needs.

[0044] Please refer to Figure 2 With the wide application of the fifth generation mobile communication technology (5th generation mobile communication technology, 5G), the working frequency band of the base station antenna is more and more, and the number of antenna systems 01 installed on the holding pole 04 is also more and more. However, due to the limited installation position and bearing capacity of the holding pole 04, it is difficult to install more antenna systems 01. In addition, if the number of holding poles 04 is increased, the additional cost will be increased for the operator, so it has become a development trend to integrate the 5G antenna system with the traditional antenna system (such as the 4G antenna system).

[0045] At present, the main way of integrating the 5G antenna system with the traditional antenna system includes integrating the radiation component of the 5G antenna system in the original 4G antenna system, and stacking two different types of radiation components. However, this way will obviously increase the thickness size of the whole antenna system, so it will significantly increase the wind area of the antenna system and reduce the use safety of the antenna system. In addition, since the radiation components of different types are integrated in the same antenna cover, they can only be used at the same time, but cannot be used independently and matched, so they have obvious limitations and are not conducive to wide application.

[0046] Therefore, the embodiment of the present application provides an antenna system which can effectively reduce the wind area of the antenna system and is flexible to use.

[0047] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0048] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limiting on the present application. As used in the specification and the appended claims of the present application, the singular forms "a," "an," and "the" are intended to include the plural forms, such as "one or more," unless the context clearly indicates otherwise. It should also be understood that "at least one" in the following embodiments of the present application means one, two or more than two.

[0049] References to "one embodiment" and similar terms used in this specification mean that one or more embodiments of this application include a particular feature, structure, or characteristic described in connection with that embodiment. Therefore, phrases such as "in one embodiment," "in some embodiments," and "in other embodiments" appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically emphasized.

[0050] like Figure 4 and Figure 5 As shown, in one embodiment provided in this application, the antenna system 10 may include two antennas, namely a first antenna 11 and a second antenna 12. The first antenna 11 includes a first radome 111, a first radiating component 112 and a feed network 113, and the second antenna 12 includes a second radome 121 and a second radiating component 122.

[0051] Specifically, such as Figure 5 As shown, the first radome 111 has a first outer surface 1111, and the first outer surface 1111 has a groove 1112. A first radiating component 112 is disposed within the first radome 111 for transmitting or receiving electromagnetic waves. A feed network 113 is connected to the first radiating component 112 so that the feed network 113 feeds a signal to the first radiating component 112 with a certain amplitude and phase. Furthermore, the feed network 113 is disposed within the first radome 111 and located on the side of the groove 1112. Specifically, the second radome 121 has a second outer surface 1211, and the second radiating component 122 is disposed within the second radome 121. The second outer surface 1211 can extend into the interior of the groove 1112. Specifically, the second outer surface 1211 is either fitted to or has a gap with the bottom wall of the groove 1112.

[0052] In the antenna system 10 provided in the present application, two independent antennas can be included, and the two antennas can be used independently, and the two antennas can also be combined for use. When the two antennas are combined for use, the outer surface of the second antenna 12 can be attached to the bottom wall of the groove 1112 of the first antenna 11 or even a small gap is left, which does not significantly increase the thickness size of the two antennas after combination, thus being beneficial to reduce the wind area and improve the use safety. Specifically, since the first antenna cover 111 has the groove 1112, and the second outer surface 1211 of the second antenna cover 121 can extend into the groove 1112 and be attached to the bottom wall of the groove 1112 or leave a gap, when the first antenna 11 and the second antenna 12 are combined, the overall thickness is smaller than the sum of the thicknesses of the first antenna 11 and the second antenna 12, thus being beneficial to reduce the thickness size of the entire antenna system 10. In addition, since the feed network 113 is arranged on the side of the groove 1112, the influence of the feed network 113 on the second radiation component 122 in the second antenna 12 is weakened, which is beneficial to ensure the normal working performance of the second antenna 12.

[0053] Specifically, as shown in Figure 5 In the first antenna 11, the thickness size of the first antenna cover 111 is H1, and the depth size of the groove 1112 is H3.

[0054] In the second antenna 12, the thickness size of the second antenna cover 121 is H2.

[0055] In the entire antenna system 10, after the first antenna 11 and the second antenna 12 are combined, a part of the second antenna 12 extends into the groove 1112. That is, the thickness size of the antenna system 10 is H1+H2-H3, which is smaller than the sum H1+H2 of the thickness size of the first antenna cover 111 and the thickness size of the second antenna cover 121. Therefore, through the structural design of the groove 1112, the thickness size of the entire antenna system 10 can be effectively reduced, thus reducing the wind area of the antenna system 10.

[0056] In addition, as shown in Figure 5As shown in the embodiments provided in the present application, the feeding network 113 is arranged on both sides of the recess 1112, and thus the first antenna cover 111 can provide sufficient mounting space for the feeding network 113. In addition, since the feeding network 113 is arranged on both sides of the recess 1112, when the second antenna 12 extends into the recess 1112, the projection of the second antenna 12 on the first outer surface 1111 does not coincide with the feeding network 113. Alternatively, the projection of the feeding network 113 on the first outer surface 1111 is located outside the recess 1112. Thus, the feeding network 113 can effectively avoid hindering or blocking the electromagnetic waves emitted by the second radiation component 122, and thus facilitate to ensure the signal transceiving performance of the second antenna 12.

[0057] In actual application, the radiation direction of the first antenna 11 and the radiation direction of the second antenna 12 can be substantially the same.

[0058] For example, as shown in the embodiments provided in the present application, the radiation direction of the first antenna 11 is away from the first outer surface 1111. That is, as viewed from the first outer surface 1111, the radiation direction of the first antenna 11 is upward. Figure 5 In addition, as shown in the embodiments provided in the present application, the radiation direction of the second antenna 12 is toward the second outer surface 1211. That is, as viewed from the second outer surface 1211, the radiation direction of the second antenna 12 is also upward. Figure 5 Figure 5 The electromagnetic waves generated by the second radiation component 122 in the second antenna 12 can be transmitted through the first antenna 11.

[0059] It can be understood that in other embodiments, the radiation direction of the first antenna 11 and the radiation direction of the second antenna 12 can also be different, which is not limited in the present application.

[0060] In addition, as shown in the embodiments provided in the present application, the radiation direction of the first antenna 11 and the radiation direction of the second antenna 12 are substantially the same, that is, the radiation direction of the first antenna 11 and the radiation direction of the second antenna 12 are both upward. Figure 5

[0061] As shown in the embodiments provided in the present application, the first antenna 11 further comprises a first frequency selective surface 114 (FSS), and the first frequency selective surface 114 is located between the first radiation component 112 and the second radiation component 122, for reflecting the signal of the first radiation component 112 and transmitting the signal of the second radiation component 122. The first frequency selective surface 114 is essentially a spatial filter, which interacts with electromagnetic waves to exhibit obvious bandpass or bandstop filtering characteristics. The first frequency selective surface 114 can reflect electromagnetic waves of some frequency bands well, and can transmit electromagnetic waves of other frequency bands well. Figure 5 ​​​

[0062] The electromagnetic wave generated by the first radiating component 112 can propagate in a direction away from the first frequency selective surface 114 through the first frequency selective surface 114. In addition, when a part of the electromagnetic wave propagates to the first frequency selective surface 114, it can be reflected by the first frequency selective surface 114, thereby effectively improving the propagation efficiency of the first radiating component 112. In addition, the electromagnetic wave generated by the second radiating component 122 can effectively propagate through the first frequency selective surface 114, thereby not affecting the normal working performance of the second radiating component 122.

[0063] In a specific application, the projection of the first radiating component 112 on the first frequency selective surface 114 can be located entirely within the first frequency selective surface 114, so that the first frequency selective surface 114 can play a good reflection role on the electromagnetic wave generated by the first radiating component 112.

[0064] Of course, in other embodiments, the projection of the first radiating component 112 on the first frequency selective surface 114 can not be entirely located within the first frequency selective surface 114, which is not limited in the present application.

[0065] In a specific application, the first frequency selective surface 114 can be a patch type (or a dielectric type).

[0066] As shown in the figure, Figure 6 In an embodiment provided by the present application, the first frequency selective surface 114 can include a dielectric plate 1141 and metal sheets 1142 located on the dielectric plate 1141, and the metal sheets 1142 are arranged at intervals.

[0067] In a specific setting, the number, size and spacing of the metal sheets 1142 can be reasonably adjusted according to actual conditions. In addition, the material of the metal sheets 1142 can be copper, aluminum or other materials with good conductivity, which is not limited in the present application.

[0068] In addition, in other embodiments, the first frequency selective surface 114 can also be a slotted type (or waveguide type), etc., and the specific type of the first frequency selective surface 114 is not limited in the present application.

[0069] In addition, as shown in the figure, Figure 5 In a specific application, the first radiating component 112 can include one dipole, or two or more dipoles. When the first radiating component 112 includes multiple dipoles, the multiple dipoles can be located on substantially the same plane, or the multiple dipoles can be located on different planes. The present application does not limit this. In addition, the first antenna 11 can be an active antenna or a passive antenna, and the specific type of the first antenna 11 is not limited in the present application.

[0070] Correspondingly, the second radiating assembly 122 can include one vibrator, or two or more vibrators. When the second radiating assembly 122 includes multiple vibrators, the multiple vibrators can be located on substantially the same plane, or the multiple vibrators can be located on different planes. The present application does not limit this. In addition, the second antenna 12 can be an active antenna or a passive antenna, and the present application does not limit the specific type of the second antenna 12.

[0071] The working frequency range of the first radiating assembly 112 can be less than the working frequency range of the second radiating assembly 122. For example, the working frequency range of the first radiating assembly 112 can be 690-960 MHz, and the working frequency range of the second radiating assembly 122 can be 1710-2180 MHz, i.e., the working frequency range of the second radiating assembly 122 can be greater than the working frequency range of the first radiating assembly 112. In addition, in specific applications, the first frequency selective surface 114 can be of the type that blocks low frequencies and transmits high frequencies. For example, the frequency range of the electromagnetic waves blocked (or reflected) by the first frequency selective surface 114 can include 690-960 MHz, and the frequency range of the electromagnetic waves transmitted by the first frequency selective surface 114 can include 1710-2180 MHz.

[0072] Of course, in specific applications, the working frequency range of the first radiating assembly 112 can also be greater than the working frequency range of the second radiating assembly 122. At the same time, the first frequency selective surface 114 can be of the type that blocks high frequencies and transmits low frequencies, which will not be repeated here.

[0073] In addition, as shown in FIG. 1, in another embodiment provided by the present application, the first antenna 11 can further include a third radiating assembly 115. The working frequency range of the third radiating assembly 115 can be different from the working frequency range of the first radiating assembly 112, thereby effectively expanding the working frequency range of the first antenna 11. Figure 7 Please refer to FIG. 1 and FIG. 2,

[0074] and Figure 7 In the feed network 113, multiple phase shifters can be included. A part of the phase shifters 113a can be connected with the first radiating assembly 112, for adjusting the phase of the first radiating assembly 112. Another part of the phase shifters 113b can be connected with the third radiating assembly 115, for adjusting the phase of the third radiating assembly 115. Figure 8

[0075] ​Of course, in specific applications, the power supply network 113 may also include a combiner, a transmission or calibration network or a filter, etc., and the first radiation component 112 and the third radiation component 115 may be connected to the corresponding combiner, transmission or calibration network or filter, etc., so that the first radiation component 112 and the third radiation component 115 may be adjusted accordingly.

[0076] In a specific configuration, the first radiating component 112 and the third radiating component 115 can be stacked, thereby effectively reducing the width of the first radome 111 and thus reducing the windward area. Of course, in other embodiments, the first radiating component 112 and the third radiating component 115 can also be arranged on the same plane, and this application does not limit this.

[0077] Furthermore, the first radiating component 112 and the third radiating component 115 can be disposed on the same side of the first frequency selective surface 114. The first frequency selective surface 114 can effectively reflect the electromagnetic waves generated by the first radiating component 112 and the third radiating component 115, thereby effectively improving the working performance of the first radiating component 112 and the third radiating component 115.

[0078] The projection of the third radiating component 115 onto the first frequency selection surface 114 can be located within the first frequency selection surface 114, thereby enabling it to effectively reflect the electromagnetic waves generated by the third radiating component 115.

[0079] Of course, in another embodiment, an additional frequency selective surface may be provided in the first antenna 11 to effectively reflect the electromagnetic waves generated by the third radiating component 115.

[0080] For example, such as Figure 9 As shown, in one example provided in this application, the first antenna 11 may further include a second frequency selective surface 116, wherein the second frequency selective surface 116 is used to reflect electromagnetic waves of the third radiating component 115 and transmit electromagnetic waves of the second radiating component 122.

[0081] In practical applications, the projection of the third radiating component 115 onto the second frequency selection surface 116 can be located within the second frequency selection surface 116, thereby enabling it to effectively reflect the electromagnetic waves generated by the third radiating component 115.

[0082] In addition, in some implementations, the second frequency selection surface 116 can also effectively reflect the electromagnetic waves generated by the first radiating component 112.

[0083] Specifically, the first radiating component 112 and the third radiating component 115 can be located on the same side of the second frequency selection surface 116.Figure 9 The second frequency selective surface 116 can effectively reflect the electromagnetic waves generated by the first radiation component 112 and the third radiation component 115, thereby effectively improving the working performance of the first radiation component 112 and the third radiation component 115.

[0084] The projection of the first radiation component 112 on the second frequency selective surface 116 can be located within the second frequency selective surface 116, thereby effectively reflecting the electromagnetic waves generated by the first radiation component 112.

[0085] It can be understood that when the first antenna 11 simultaneously includes the first frequency selective surface 114 and the second frequency selective surface 116, the first frequency selective surface 114 can be located above the second frequency selective surface 116, or the second frequency selective surface 116 can be located above the first frequency selective surface 114, which is not limited in the present application.

[0086] In addition, in specific applications, the setting position of the feed network 113 or the setting position of the recess 1112 can also be various.

[0087] For example, as shown in FIG. 1, in an example provided by the present application, the recess 1112 is located at the middle of the first outer surface 1111, and the two ends of the recess 1112 penetrate the edge of the first antenna cover 111. The feed network 113 is located on both sides of the recess 1112. Figure 5

[0088] As shown in FIG. 2, in another example provided by the present application, the recess 1112 can be located at the edge of the first outer surface 1111, and the feed network 113 can be located on one side of the recess 1112. Figure 10

[0089] The present application does not specifically limit the shape and setting position of the recess 1112.

[0090] In addition, when the second antenna 12 is set, the shape of the second antenna cover 121 can also be various.

[0091] For example, as shown in FIG. 3, in an example provided by the present application, the second outer surface 1211 of the second antenna cover 121 is a plane, and the width dimension of the second outer surface 1211 is not greater than the width dimension of the recess 1112 (the dimension in the left-right direction in the figure), so that the second outer surface 1211 can completely extend into the recess 1112. In addition, one side of the second antenna cover 121, i.e. the side away from the second outer surface 1211, can also be provided with a heat dissipation fin 1210 to improve the heat dissipation performance of the second antenna 12. Figure 10 Or, as shown in FIG. 4, in another example provided by the present application, the second outer surface 1211 of the second antenna cover 121 is a plane, and the width dimension of the second outer surface 1211 is greater than the width dimension of the recess 1112 (the dimension in the left-right direction in the figure), so that the second outer surface 1211 cannot completely extend into the recess 1112. In addition, one side of the second antenna cover 121, i.e. the side away from the second outer surface 1211, can also be provided with a heat dissipation fin 1210 to improve the heat dissipation performance of the second antenna 12.

[0092] Figure 11 ​​​As shown, in another example provided by the present application, the second outer surface 1211 has a protrusion 123. Specifically, the overall width of the second outer surface (not shown in the figure) can be greater than the width dimension of the groove 1112. The width dimension of the protrusion 123 is not greater than the width dimension of the groove 1112, so that the protrusion 123 can extend into the groove 1112.

[0093] In a specific application, in order to prevent the power supply network 113 from causing adverse effects such as blockage to the second radiating assembly 122, the projection of the second radiating assembly 122 on the second outer surface can be located in the protrusion 123.

[0094] In the example shown, the width dimension of the second outer surface can be less than or equal to the width dimension of the first outer surface (not shown in the figure). Alternatively, the width dimension of the second outer surface can also be greater than the width dimension of the first outer surface, which is not specifically limited by the present application.

[0095] In addition, in other embodiments, the top surface of the protrusion 123 can also be omitted. When the protrusion 123 extends into the groove 1112, the second radome 121 can be tightly fitted by the bottom wall of the groove 1112 to ensure the tightness of the second radome 121. Alternatively, it can be understood that the first radome 111 and the second radome 121 can share a part of the radome structure to ensure the tightness of the entire antenna system 10, while also effectively reducing the material usage of the radome, which is beneficial to reduce the weight of the antenna system 10.

[0096] Alternatively, in another embodiment, the bottom wall of the groove 1112 can also be omitted. When the protrusion 123 extends into the groove 1112, the protrusion 123 can be tightly fitted with the side wall of the groove 1112 to ensure the tightness of the first radome 111. Alternatively, it can be understood that the first radome 111 and the second radome 121 can share a part of the radome structure to ensure the tightness of the entire antenna system 10, while also effectively reducing the material usage of the radome, which is beneficial to reduce the weight of the antenna system 10.

[0097] In connecting the first radome 111 and the second radome 121, welding or adhesion can be used to achieve fixed connection.

[0098] Alternatively, the first antenna cover 111 and the second antenna cover 121 can also be fixedly connected by a buckle or a screw, etc. to realize the detachable connection effect. When the first antenna 11 and the second antenna 12 need to be used in combination, the first antenna cover 111 and the second antenna cover 121 can be fixedly connected conveniently. When the first antenna 11 and the second antenna 12 need to be used independently, the first antenna cover 111 and the second antenna cover 121 can be separated conveniently, thereby facilitating the convenience during installation and disassembly.

[0099] In a specific application, the above-mentioned antenna system 10 can be applied in various types of communication devices to realize the wireless communication function.

[0100] For example, as shown in FIG. 4, the communication device is taken as a base station. The base station can include a pole 04 and an adjusting bracket 05. The antenna system 10 can be fixedly installed on the pole 04 through the adjusting bracket 05. Figure 12

[0101] Specifically, the back of the second antenna cover 121 can be provided with a structure for connecting with the adjusting bracket 05. After the first antenna cover 111 and the second antenna cover 121 are fixedly connected, the entire antenna system 10 can be fixed on the pole through the adjusting bracket 05. Alternatively, it can be understood that the first antenna 11 can be connected with the adjusting bracket 05 through the second antenna 12.

[0102] In some embodiments, the first antenna cover 111 can be fixedly connected with the adjusting bracket 05. Alternatively, it can be understood that the second antenna 12 can be connected with the adjusting bracket 05 through the first antenna 11.

[0103] Alternatively, the first antenna cover 111 and the second antenna cover 121 can be fixedly connected with the adjusting bracket 05, which is not limited in the present application.

[0104] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.​

Claims

1. An antenna system, characterized by comprise a first antenna and a second antenna; the first antenna comprises: a first radome having a first outer surface, the first outer surface having a groove; a first radiating assembly disposed in the first radome; a feed network connected with the first radiating assembly; the feed network is disposed in the first radome, and the feed network is located at a side of the groove; the second antenna comprises: a second radome having a second outer surface; a second radiating assembly disposed in the second radome; wherein at least a portion of the second outer surface extends into the groove; the groove extends through the first radome in a length direction of the first radome, and the side of the groove is at least one side in a width direction of the first radome; the feed network comprises a phase shifter, and a projection of the second radiating assembly on the first radiating assembly is located outside the second radiating assembly.

2. The antenna system of claim 1, wherein, The first antenna further comprises a first frequency selective surface between the first radiating assembly and the second radiating assembly, for reflecting signals of the first radiating assembly and transmitting signals of the second radiating assembly.

3. The antenna system of claim 2, wherein, A projection of the first radiating assembly on the first frequency selective surface is located within the first frequency selective surface.

4. The antenna system of claim 2 or 3, characterized in that, The first antenna further comprises a third radiating assembly connected with the feed network, and the third radiating assembly and the first radiating assembly are located on the same side of the first frequency selective surface; wherein the operating frequency bands of the first radiating assembly and the third radiating assembly are different.

5. The antenna system of claim 4, wherein, The first antenna further comprises a second frequency selective surface, the third radiating assembly and the first radiating assembly are located on the same side of the second frequency selective surface, and the second frequency selective surface is used for reflecting signals of the first radiating assembly and the third radiating assembly and transmitting signals of the second radiating assembly.

6. The antenna system of claim 5, wherein, A projection of the third radiating assembly on the second frequency selective surface is located within the second frequency selective surface.

7. The antenna system of claim 4, wherein, A projection of the third radiating assembly on a bottom wall of the groove is located within the bottom wall.

8. The antenna system of any one of claims 1 to 3, wherein, The operating frequency band of the first radiating assembly is smaller than the operating frequency band of the second radiating assembly.

9. The antenna system of claim 4, wherein, The operating frequency band of the third radiating assembly is smaller than the operating frequency band of the second radiating assembly.

10. The antenna system of any one of claims 1 to 3, wherein, The second outer surface is attached to the bottom wall of the groove.

11. The antenna system of any one of claims 1 to 3, wherein, The second outer surface has a protruding portion extending into the groove and attached to the bottom wall of the groove.

12. The antenna system of claim 11, wherein, A projection of the second radiating assembly on the second outer surface is located within the protruding portion.

13. The antenna system of any one of claims 1 to 3, wherein, The first radome and the second radome are detachably connected.

14. A communication device, characterized by An antenna system as claimed in any one of claims 1 to 13. An antenna system as claimed in any one of claims 1 to 13.

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