Antenna system and communication device

Abstract

The invention provides an antenna system and a communication device, which can reduce the energy of grating lobes in an antenna array, is suitable for more scenes, and can be applied to communication scenes. The antenna system comprises a plurality of antenna units, and each antenna unit comprises a first antenna and a second antenna. The working mode of the first antenna comprises a high-order mode of a first frequency band, the working mode of the second antenna comprises a dominant mode of the first frequency band, and the first antenna and the second antenna are located in the same planar antenna array.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to an antenna system and a communication device. Background Art

[0002] In a communication scenario, an antenna system can achieve signal transmission and reception in different directions through an antenna array, improving communication efficiency. However, the range (scanning angle) of the received or transmitted signals of the antenna array is related to the spacing between the antennas in the antenna array. When the spacing between the antennas in the antenna array is fixed, the scanning angle of the antenna array is limited. When the scanning angle of the antenna array is fixed, the spacing between the antennas in the antenna array is limited, thus resulting in limited application scenarios for the antenna system. Summary of the Invention

[0003] Embodiments of this application provide an antenna system and a communication device that can be applicable to more scenarios.

[0004] To achieve the above object, this application adopts the following technical solutions:

[0005] In a first aspect, an antenna system is provided. The antenna system includes a plurality of antenna units, where each antenna unit includes a first antenna and a second antenna. The operating mode of the first antenna includes a high-order mode in a first frequency band, and the operating mode of the second antenna includes a main mode in the first frequency band. The first antenna and the second antenna are located in the same planar antenna array.

[0006] Based on the antenna system provided in the first aspect, the antenna system includes antennas operating in a high-order mode and a main mode in the same frequency band, such as the first antenna and the second antenna above. Among them, the first antenna and the second antenna are located in the same planar antenna array. Since the radiation surface of the antenna in the planar antenna array is consistent with the direction of the antenna array plane, in this way, when the first antenna and the second antenna in each antenna unit of the plurality of antenna units receive or transmit signals, the gain of the first antenna in the high-order mode of the first frequency band is synthesized with the gain of the second antenna in the main mode of the first frequency band. That is to say, the gain of the first antenna in the high-order mode of the first frequency band in the plurality of antenna units is superimposed on the signals transmitted by the second antenna in the main mode of the first frequency band in the plurality of antenna units, or the received signals are superimposed on each other, thereby reducing the energy of the grating lobes generated when the second antenna operates in the main mode of the first frequency band. When the spacing between the antennas is fixed, the scanning range of the antenna array in the antenna system can be increased, and when the spacing between the antennas is fixed, it can be applicable to more scenarios.

[0007] It should be understood that for the same planar antenna array, the radiation surface of the antennas in the antenna array is consistent with the array surface direction of the antenna array. Since the first antenna and the second antenna are located in the same planar antenna array, it can be known that the radiation surface of the first antenna is consistent with the array surface direction of the planar antenna array, and the radiation surface of the second antenna is consistent with the array surface direction of the planar antenna array. That the radiation surface of the antenna is consistent with the array surface direction of the antenna array may mean that the included angle formed between the radiation surface of the antenna and the antenna array surface is less than or equal to the first angle threshold. That the radiation surface of the first antenna is consistent with the array surface direction of the planar antenna array and the radiation surface of the second antenna is consistent with the array surface direction of the planar antenna array may mean that: the included angle formed between the radiation surface of the first antenna and the surface of the planar antenna is less than or equal to the first angle threshold, and the included angle formed between the radiation surface of the second antenna and the surface of the planar antenna is less than or equal to the first angle threshold. It can also be said that the normal direction of the element pattern of the first antenna is consistent with the normal direction of the element pattern of the second antenna. For example, the included angle between the normal direction of the element pattern of the first antenna and the normal direction of the element pattern of the second antenna is within the second angle threshold, where the second angle threshold is determined according to the first angle threshold. For example, the second angle threshold may be equal to the first angle threshold, or the second angle threshold is less than 2 times the first angle threshold.

[0008] In a possible implementation, the first antenna is connected to the first radio frequency multifunctional device, the first radio frequency multifunctional device is connected to the first port of the power splitter, the second antenna is connected to the second radio frequency multifunctional device, the second radio frequency multifunctional device is connected to the second port of the power splitter, the third port of the power splitter is connected to the first amplifier, and the first amplifier is connected to the upconverter. That is to say, both the first antenna and the second antenna are connected to the transmission channel. In this way, signals can be transmitted through the first antenna and the second antenna.

[0009] In a possible implementation, the first antenna is connected to the first radio frequency multifunctional device, the first radio frequency multifunctional device is connected to the first port of the combiner, the second antenna is connected to the second radio frequency multifunctional device, the second radio frequency multifunctional device is connected to the second port of the combiner, the third port of the combiner is connected to the first amplifier, and the first amplifier is connected to the downconverter. That is to say, both the first antenna and the second antenna are connected to the receiving channel. In this way, signals can be received through the first antenna and the second antenna.

[0010] In a possible implementation, the operating mode of the first antenna further includes the main mode of the second frequency band. The frequency of the first frequency band is greater than that of the second frequency band. That is to say, the first antenna can operate in different modes of different frequency bands. The first antenna can receive signals and can also transmit signals, that is, the antenna array in the antenna system is a transmit-receive common-aperture antenna array. In this way, the grating lobes on the antenna with a higher operating frequency in the transmit-receive common-aperture antenna array can be suppressed, and the array gain of the first antenna and the second antenna when operating in the first frequency band can be increased, thereby reducing the power consumption and interference of the antenna system. In addition, one antenna can operate in different modes under two frequency bands, that is, the same first antenna can be used for both transmission and reception, so the number of channels can be reduced.

[0011] In a possible implementation, the first antenna is connected to the common port of the duplexer. The first port of the duplexer is connected to the first radio frequency multifunctional device. The first radio frequency multifunctional device is connected to the first port of the power divider. The second antenna is connected to the second radio frequency multifunctional device. The second radio frequency multifunctional device is connected to the second port of the power divider. The third port of the power divider is connected to the first amplifier. The first amplifier is connected to the upconverter. The second port of the duplexer is connected to the third radio frequency multifunctional device. The third radio frequency multifunctional device is connected to the second amplifier. The second amplifier is connected to the downconverter. In this way, when the first antenna operates in the high-order mode of the first frequency band and the main mode of the second frequency band in the first frequency band, a single channel can be shared, thus reducing the number of channels.

[0012] In a possible implementation, the first antenna is connected to the common port of the duplexer. The first port of the duplexer is connected to the first radio frequency multifunctional device. The first radio frequency multifunctional device is connected to the first port of the combiner. The second antenna is connected to the second radio frequency multifunctional device. The second radio frequency multifunctional device is connected to the second port of the combiner. The third port of the combiner is connected to the first amplifier. The first amplifier is connected to the downconverter. The second port of the duplexer is connected to the third radio frequency multifunctional device. The third radio frequency multifunctional device is connected to the second amplifier. The second amplifier is connected to the upconverter. In this way, when the first antenna operates in the high-order mode of the first frequency band and the main mode of the second frequency band in the first frequency band, a single channel can be shared, thus reducing the number of channels.

[0013] In a possible implementation, in the operating mode of the first antenna, the high-order mode of the first frequency band is orthogonal to the main mode of the second frequency band. In the operating mode of the first antenna, the high-order mode of the first frequency band is orthogonal to the main mode of the first frequency band in the operating mode of the second antenna. That is to say, the modes of different frequency bands in the antenna system are orthogonal to each other. In this way, the mutual interference between the transmit and receive antennas can be reduced, and the isolation degree between the transmit and receive antennas can be improved.

[0014] In a possible implementation, the second antenna is connected to the second radio frequency multifunctional device through a filter, or the second antenna is a filtering antenna. In this way, the mutual interference between the receiving and transmitting antennas can be reduced, and the isolation degree between the receiving and transmitting antennas can be improved.

[0015] In a possible implementation, the antenna unit further includes a third antenna. Among them, the operating mode of the third antenna includes the main mode of the second frequency band. The frequency of the first frequency band is greater than that of the second frequency band. In this way, the antenna system can include antennas with different operating frequencies, which can be used for receiving signals or transmitting signals, that is, the antenna array in the antenna system is a transceiver common-aperture antenna array. In this way, the grating lobes on the antenna with a higher operating frequency in the antenna system can be suppressed.

[0016] In a possible implementation, the first antenna is connected to the first radio frequency multifunctional device, and the first radio frequency multifunctional device is connected to the first port of the power splitter; the second antenna is connected to the second radio frequency multifunctional device, and the second radio frequency multifunctional device is connected to the second port of the power splitter. The third port of the power splitter is connected to the first amplifier, and the first amplifier is connected to the upconverter. The third antenna is connected to the third radio frequency multifunctional device, the third radio frequency multifunctional device is connected to the second amplifier, and the second amplifier is connected to the downconverter. In this way, when the first antenna operates in the high-order mode of the first frequency band and the second frequency band operates in the main mode of the first frequency band, they can share a channel, thereby reducing the number of channels.

[0017] In a possible implementation, the first antenna is connected to the first radio frequency multifunctional device, and the first radio frequency multifunctional device is connected to the first port of the combiner; the second antenna is connected to the second radio frequency multifunctional device, and the second radio frequency multifunctional device is connected to the second port of the combiner. The third port of the combiner is connected to the first amplifier, and the first amplifier is connected to the downconverter. The third antenna is connected to the third radio frequency multifunctional device, the third radio frequency multifunctional device is connected to the second amplifier, and the second amplifier is connected to the upconverter. In this way, when the first antenna operates in the high-order mode of the first frequency band and the second frequency band operates in the main mode of the first frequency band, they can share a channel, thereby reducing the number of channels.

[0018] In a possible implementation, the first antenna is connected to the first radio frequency multifunctional device through a first filter, or the first antenna is a filtering antenna. The second antenna is connected to the second radio frequency multifunctional device through a second filter, or the second antenna is a filtering antenna. The third antenna is connected to the third radio frequency multifunctional device through a third filter, or the third antenna is a filtering antenna. In this way, the interference signals in the channel can be filtered by the filter or the filtering antenna, reducing the use of the duplexer, thereby reducing the complexity of the antenna system.

[0019] In a possible implementation, the spacing between two adjacent antenna elements among multiple antenna elements satisfies the following relationship: where λ is the wavelength of the first frequency, and θ0 is the pointing angle of the beam. That is to say, antenna elements with a larger spacing can be arranged in the antenna system, so as to suppress the grating lobes in an antenna array with a larger spacing.

[0020] The spacing between two adjacent antenna elements may refer to the distance between the center points of the two antenna elements.

[0021] In a possible implementation, the gain of the radiation pattern of multiple antenna elements at the grating lobe position corresponding to the first antenna array is less than the gain of the grating lobe corresponding to the first antenna array. The first antenna array is composed of a second antenna in each antenna element among multiple antenna elements.

[0022] In a possible implementation, the excitation and amplitude of the first antenna and the second antenna among multiple antenna elements are determined according to the second antenna array, the fourth antenna, and the fifth antenna. The second antenna array is composed of the first antenna and the second antenna in each antenna element among multiple antenna elements. The fourth antenna is the antenna located at the main lobe position of the first antenna array, and the fifth antenna is the antenna located at the grating lobe position of the first antenna array.

[0023] In a second aspect, a communication device is provided. The communication device includes the antenna system described in any item of the first aspect.

[0024] In a third aspect, a communication method is provided. The communication method is applied to a first device. The antenna system of the first device includes multiple antenna elements, and each antenna element includes a first antenna and a second antenna. The operating mode of the first antenna includes a high-order mode in a first frequency band, and the operating mode of the second antenna includes a main mode in the first frequency band. The communication method includes: the first device generates first information to be transmitted. The excitation amplitude and excitation phase of the first information on each antenna port among multiple antenna elements are determined according to the main lobe position and the grating lobe position corresponding to the first antenna array among multiple antenna elements, and the gain of the radiation pattern of multiple antenna elements at the grating lobe position corresponding to the first antenna array is less than the gain of the grating lobe corresponding to the first antenna array. The first device transmits the first information based on the high-order mode of the first antenna in the first frequency band and the main mode of the second antenna in the first frequency band.

[0025] Based on the communication method provided by a third party, a first device may generate first information and transmit the first information based on the high-order mode of a first antenna in a first frequency band and the main mode of a second antenna in the first frequency band. Since the antenna system includes antennas operating in the high-order mode and the main mode in the same frequency band, such as the first antenna and the second antenna mentioned above, and since the normal directions of the main mode and the high-order mode are the same, when the first antenna and the second antenna receive or transmit signals, the null position of the signal in the high-order mode of the first antenna in the first frequency band is consistent with the maximum gain position of the signal in the high-order mode of the second antenna in the second frequency band, thereby suppressing the grating lobes generated when the second antenna operates in the high-order mode in the second frequency band.

[0026] In some possible implementation solutions, the method provided by the third party may further include: the first device receiving second information based on the main mode of the first antenna in the first frequency band in the antenna system.

[0027] For the implementation of multiple antenna units in the third aspect, reference may be made to the relevant introduction in the first aspect, which will not be elaborated here.

[0028] In a fourth aspect, a communication method is provided. The communication method is applied to a first device. The antenna system of the first device includes multiple antenna units, and each antenna unit includes a first antenna and a second antenna. The operating mode of the first antenna includes a high-order mode in a first frequency band, and the operating mode of the second antenna includes a main mode in the first frequency band. The communication method includes: the first device receiving third information based on the high-order mode of the first antenna in the first frequency band and the main mode of the second antenna in the first frequency band. The excitation amplitude and excitation phase of the second information on the antenna ports in the multiple antenna units are determined according to the main lobe position and grating lobe position of the antenna corresponding to the main mode in the first frequency band in the multiple antenna units, and the gain of the radiation pattern of the multiple antenna units at the grating lobe position corresponding to the first antenna array is less than the gain of the grating lobe corresponding to the first antenna array.

[0029] Based on the communication method provided by the fourth aspect, the first device may receive second information based on the antenna system. Since the antenna system includes antennas operating in the high-order mode and the main mode in the same frequency band, such as the first antenna and the second antenna mentioned above, and since the normal directions of the main mode and the high-order mode are the same, when the first antenna and the second antenna receive or transmit signals, the null position of the signal in the high-order mode of the first antenna in the first frequency band is consistent with the maximum gain position of the signal in the high-order mode of the second antenna in the second frequency band, thereby suppressing the grating lobes generated when the second antenna operates in the high-order mode in the second frequency band.

[0030] In some possible implementation solutions, the method provided by the fourth aspect may further include: The first device sends the fourth information based on the main mode of the first antenna in the second frequency band. For the implementation of multiple antenna units in the fourth aspect, reference may be made to the relevant introduction in the first aspect, which will not be elaborated here.

[0031] In a fifth aspect, a communication device is provided. The communication device is used to execute the communication method described in any one of the implementation manners of the first aspect or the second aspect.

[0032] In this application, the communication device described in the fifth aspect may be a terminal device or a network device, or a chip (system) or other components or assemblies that can be provided in the terminal device or the network device, or a device including the terminal device or the network device.

[0033] It should be understood that the communication device described in the fifth aspect includes corresponding modules, units, or means for implementing the communication method described in any one of the first aspect or the second aspect. The module, unit, or means may be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units for performing the functions involved in the above communication method.

[0034] In a sixth aspect, a communication device is provided. The communication device includes: a processor, and the processor is used to execute the communication method described in any one of the possible implementation manners of the first aspect or the second aspect.

[0035] In a possible design solution, the communication device described in the sixth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver may be used for the communication device described in the sixth aspect to communicate with other communication devices.

[0036] In a possible design solution, the communication device described in the sixth aspect may further include a memory. The memory may be integrated with the processor or may be provided separately. The memory may be used to store the computer program and / or data involved in the communication method described in any one of the first aspect or the second aspect.

[0037] In this application, the communication device described in the sixth aspect may be a terminal device or a network device, or a chip (system) or other components or assemblies that can be provided in the terminal device or the network device, or a device including the terminal device or the network device.

[0038] In a seventh aspect, a communication device is provided. The communication device includes: a processor, the processor is coupled to a memory, and the processor is used to execute the computer program stored in the memory so that the communication device executes the communication method described in any one of the possible implementation manners of the first aspect or the second aspect.

[0039] In a possible design, the communication device described in the seventh aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver may be used for the communication device described in the seventh aspect to communicate with other communication devices.

[0040] In this application, the communication device described in the seventh aspect may be a terminal device or a network device, or a chip (system) or other component or assembly that can be disposed in the terminal device or the network device, or a device including the terminal device or the network device.

[0041] In an eighth aspect, there is provided a communication device, including: a processor and a memory; the memory is used to store a computer program, and when the processor executes the computer program, the communication device is caused to execute the communication method described in any one of the implementation manners of the first aspect or the second aspect.

[0042] In a possible design, the communication device described in the eighth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver may be used for the communication device described in the eighth aspect to communicate with other communication devices.

[0043] In this application, the communication device described in the eighth aspect may be a terminal device or a network device, or a chip (system) or other component or assembly that can be disposed in the terminal device or the network device, or a device including the terminal device or the network device.

[0044] In a ninth aspect, there is provided a communication device, including: a processor; the processor is used to be coupled with a memory, and after reading the computer program in the memory, execute the communication method described in any one of the implementation manners of the first aspect or the second aspect according to the computer program.

[0045] In a possible design, the communication device described in the ninth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver may be used for the communication device described in the ninth aspect to communicate with other communication devices.

[0046] In this application, the communication device described in the ninth aspect may be a terminal device or a network device, or a chip (system) or other component or assembly that can be disposed in the terminal device or the network device, or a device including the terminal device or the network device.

[0047] In a tenth aspect, there is provided a processor. The processor is used to execute the communication method described in any one of the possible implementation manners of the first aspect or the second aspect.

[0048] In an eleventh aspect, there is provided a communication system. The communication system includes one or more terminal devices and one or more network devices.

[0049] In a twelfth aspect, there is provided a computer-readable storage medium, including: a computer program or instruction; when the computer program or instruction runs on a computer, the computer is caused to execute the communication method described in any possible implementation manner of the first aspect or the second aspect.

[0050] In a thirteenth aspect, there is provided a computer program product, including a computer program or instruction, which, when running on a computer, causes the computer to execute the communication method described in any possible implementation manner of the first aspect or the second aspect.

[0051] In addition, for the technical effects of the communication device described in the fifth aspect to the thirteenth aspect above, reference may be made to the technical effects of the communication method described in the first aspect or the second aspect above, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the architecture of the transceiver-separated array provided by an embodiment of the present application;

[0053] Figure 2 It is a schematic diagram of the antenna array with grid arrangement provided by an embodiment of the present application Figure 1 ;

[0054] Figure 3 It is a schematic diagram of the antenna array with grid arrangement provided by an embodiment of the present application Figure 2 ;

[0055] Figure 4 It is a schematic diagram of the antenna array with grid arrangement provided by an embodiment of the present application Figure 3 ;

[0056] Figure 5 It is a schematic diagram of the antenna array with sub-array arrangement provided by an embodiment of the present application;

[0057] Figure 6 It is a schematic diagram of the connection structure of the antennas in the antenna system provided by an embodiment of the present application;

[0058] Figure 7 It is a schematic diagram of the architecture of the communication system provided by an embodiment of the present application;

[0059] Figure 8 It is a schematic diagram of the structure of the antenna system provided by an embodiment of the present application Figure 1 ;

[0060] Figure 9 It is a schematic diagram of the radiation direction of the high-order mode provided by an embodiment of the present application;

[0061] Figure 10 It is a schematic diagram of the radiation direction of the main mode provided by an embodiment of the present application;

[0062] Figure 11 Schematic diagram of the antenna position relationship provided by the embodiments of the present application Figure 1 ;

[0063] Figure 12 Radiation pattern corresponding to the main mode and high-order modes provided by the embodiments of the present application

[0064] Figure 13 Schematic diagram of the structure of the antenna system provided by the embodiments of the present application Figure 2 ;

[0065] Figure 14 Schematic diagram of the structure of the antenna system provided by the embodiments of the present application Figure 3 ;

[0066] Figure 15 Schematic diagram of the structure of the antenna system provided by the embodiments of the present application Figure 4 ;

[0067] Figure 16 Schematic diagram of the structure of the antenna system provided by the embodiments of the present application Figure 5 ;

[0068] Figure 17 Schematic diagram of the antenna position relationship provided by the embodiments of the present application Figure 2 ;

[0069] Figure 18 Schematic diagram of the structure of the antenna system provided by the embodiments of the present application Figure 6 ;

[0070] Figure 19 Schematic diagram of the structure of the antenna system provided by the embodiments of the present application Figure 7 ;

[0071] Figure 20 Schematic diagram of the single-mode antenna array provided by the embodiments of the present application

[0072] Figure 21 Radiation pattern of the single-mode antenna array provided by the embodiments of the present application

[0073] Figure 22 Schematic diagram of the hybrid-mode antenna array provided by the embodiments of the present application

[0074] Figure 23 Radiation pattern of the hybrid-mode antenna provided by the embodiments of the present application

[0075] Figure 24 Schematic diagram of the positions of the fourth antenna and the fifth antenna provided by the embodiments of the present application

[0076] Figure 25The radiation pattern of the array in the antenna system provided by the embodiments of the present application;

[0077] Figure 26 The schematic flow chart of the communication method provided by the embodiments of the present application Figure 1 ;

[0078] Figure 27 The schematic flow chart of the communication method provided by the embodiments of the present application Figure 2 ;

[0079] Figure 28 The schematic structure diagram of the communication device provided by the embodiments of the present application Figure 1 ;

[0080] Figure 29 The schematic structure diagram of the communication device provided by the embodiments of the present application Figure 2 . Detailed implementation manners

[0081] For ease of understanding, the related technologies of the present application are introduced below first.

[0082] In a communication scenario, the communication efficiency can be improved by an antenna array. When the spacing between antennas in the antenna array (i.e., the spacing between antennas), the wavelength corresponding to the operating frequency band of the antennas, and the pointing angle of the beam of the antenna array satisfy the relationship shown in the following formula (1), within the range where the pointing angle of the antenna array is less than or equal to θ0, there is a main lobe and no grating lobe. When the pointing angle of the antenna array is greater than θ0, grating lobes will appear.

[0083]

[0084] Where d is the spacing between antennas in the antenna array, λ is the wavelength corresponding to the operating frequency band of the antennas in the antenna array, and θ0 is the pointing angle of the beam of the antenna array. When the antenna spacing is fixed, θ0 is the scanning angle of the beam of the antenna array.

[0085] For example, for the antenna system of a communication device (such as a terminal device or a network device) in a communication scenario, it can be used for signal reception and signal transmission. That is to say, in the scenario where the antenna system of the communication device includes a receiving antenna and a transmitting antenna, the antenna array in the antenna system can be implemented in the form of a transmit-receive separated array. As Figure 1 shown, in the transmit-receive separated array, the receiving antennas are on one array, i.e., the receiving antenna array, and the transmitting antennas are on another array, i.e., the transmitting antenna array. That is to say, the receiving antenna array and the transmitting antenna array are designed independently.

[0086] In a transmit-receive separated array, for the receive antenna array or the transmit antenna array, the spacing between antennas still needs to satisfy the relationship shown in the above formula (1). That is to say, when the spacing between antennas in the antenna array is determined, the scanning angle of the beam of the antenna array is limited. When the pointing angle of the antenna array is determined, the spacing between antennas in the antenna array is limited. It can be seen from this that the above solution will lead to limited application scenarios of the antenna system. In some communication scenarios, such as non-terrestrial networks (NTN) communication scenarios, with the popularization of low earth orbit (LEO) satellite communication, the development of large-scale terminal phased arrays applied on the ground is rapid, and low-cost, low-power, and small-size ground phased array terminals have become an urgent need. Based on this, the antenna array in the antenna system can be implemented in the form of a transmit-receive common-aperture antenna array. In a transmit-receive common-aperture antenna array, the receive antenna and the transmit antenna are designed in the same antenna array. Therefore, compared with the antenna system using a transmit-receive separated array, when the number of receive antennas is the same and the number of transmit antennas is the same, the size of the antenna array is smaller. Since the pointing angle of the antenna system is related to the antenna spacing, within the scanning range of the antenna array, the spacing between antennas still needs to satisfy the relationship shown in the above formula (1). However, for the antenna system of the same communication device, the operating frequency bands of the receive antenna and the transmit antenna may not be the same. In this case, if a transmit-receive common-aperture antenna array is used, when the scanning angles of the antenna array formed by the receive antennas and the antenna array formed by the transmit antennas are the same, it will cause the receive antenna and the transmit antenna to be unable to satisfy the relationship shown in the above formula (1) simultaneously.

[0087] For example, when the scanning angle of the antenna array is 60°, when the antenna spacing satisfies the above formula (1), there will be no grating lobes. However, when antennas with different operating frequency bands are distributed in the same aperture, when the arrangement spacing of the low-frequency antennas satisfies the conditions shown in formula (1), placing high-frequency antennas at the same positions will cause the spacing of the high-frequency antennas to be unable to satisfy the conditions shown in formula (1). Among them, the high-frequency antenna and the low-frequency antenna are relative concepts, and the operating frequency of the high-frequency antenna is higher than that of the low-frequency antenna. For example, the operating frequency point of the receive antenna unit (low-frequency antenna) is 20 gigahertz (GHz), the spacing between the receive antennas is 7.5 millimeters (mm), the operating frequency point of the transmit antenna (high-frequency antenna) is 30 GHz, and the half-wavelength is 5 mm. When the receive antenna (low-frequency antenna) scans to 60°, when the transmit antenna (high-frequency antenna) also scans to 60°, grating lobes will be generated, and the energy of the grating lobes is the same as that of the main lobe. Therefore, the performance of the transmit antenna will be reduced by 3 decibels (dB).

[0088] In addition, in a transmit-receive common-aperture antenna, the spacing between antenna elements is limited, and the coupling between the transmit and receive antennas is large, which will cause relatively large interference between the transmit and receive antennas.

[0089] To improve the grating lobe problem that occurs during the scanning of a transmit-receive common-aperture phased array, in some communication scenarios, different spacings can be used for antennas in different frequency bands. In this case, in the antenna array, the number of antennas with different operating frequency bands is different, and all antennas are arranged in different grids. Antennas with different operating frequency bands are still arranged according to the requirement of half-wavelength, so as to ensure that antennas in different operating frequency bands all meet the same angle scanning range. For the sake of easy understanding, the following will take a specific antenna array, the scanning angle of the antenna array is 60°, high-frequency antennas, and low-frequency antennas as examples for illustration. A high-frequency antenna refers to an antenna with a high-frequency operating frequency band, and a low-frequency antenna refers to an antenna with a low-frequency operating frequency band. It should be understood that the high-frequency band and the low-frequency band here are relative, where the frequency of the high-frequency band is higher than that of the low-frequency band.

[0090] Suppose the operating frequency point of antenna 1 is 21.2 gigahertz (GHz), the wavelength corresponding to the operating frequency point of antenna 1 is λ1, the operating frequency point of antenna 2 is 31 GHz, the wavelength corresponding to the operating frequency point of antenna 2 is λ2, and the spacing between two adjacent antenna 2s is d2 = 0.42λ2, and the spacing between two adjacent antenna 1s is d1 = 0.5λ1, where, If the side length of the antenna array is Nλ2, then within an antenna array, the number of antenna 2s is 4.86N 2 , and the number of antenna 1s is 1.62N 2 . Then, the arrangement of the antennas in the antenna array is as Figure 2 shown.

[0091] As Figure 3 shown, suppose the operating frequency point of antenna 1 is 31 GHz, the wavelength corresponding to the operating frequency point of antenna 1 is λ1, the operating frequency point of antenna 2 is 21.2 GHz, the wavelength corresponding to the operating frequency point of antenna 2 is λ2, the spacing between two adjacent antenna 2s is d2 = 0.485λ2, and the spacing between two adjacent antenna 1s is d1 = 0.5λ1, where, If the side length of the antenna array is Nλ2, then within an antenna array, the number of antenna 2s is 4N 2 , and the number of antenna 1s is 2N 2 . Then, the arrangement of the antennas in the antenna array is as Figure 3 shown.

[0092] As Figure 4As shown, assume that the operating frequency of antenna 1 is 31 GHz, the wavelength corresponding to the operating frequency of antenna 1 is λ1, the operating frequency of antenna 2 is 21.2 GHz, and the wavelength corresponding to the operating frequency of antenna 2 is λ2. Then, the spacing between two adjacent antenna 2s is d2 = 0.485λ2, and the spacing between two adjacent antenna 1s is d1 = 0.5λ1, where If the side length of the antenna array is Nλ2, then within one antenna array, the number of antenna 2s is 4N 2 , and the number of antenna 1s is 2N 2 . Then, the arrangement of the antennas in the antenna array is as Figure 4 shown.

[0093] In some other scenarios, the antennas in the antenna array can be arranged in the form of sub-arrays (sub-arrays). Among them, the antennas within the sub-array are arranged in the form of a binary combination with a null in the radiation pattern. As Figure 5 shown in (a) of Figure 5 , the antennas in an antenna array can be arranged in the same direction. Among them, multiple consecutive antennas are arranged together as a sub-array, and the antenna array includes multiple sub-arrays. As Figure 5 shown in (b) of Figure 5 , assume that the antenna array includes sub-arrays 1 to 8. Among them, all the array elements in sub-arrays 1 to 8 are arranged in the same direction, such as the horizontal direction. Among them, each sub-array includes at least two array elements. The wavelength corresponding to the operating frequency of the antennas in the antenna array is λ. Then, for the same sub-array, the spacing between the antennas within the sub-array is d' = 0.45λ. For the sub-arrays of the antenna array, the spacing between two adjacent sub-arrays is d = 0.6λ. It should be understood that the spacing between two adjacent sub-arrays refers to the distance between the i-th antenna of the first sub-array and the i-th antenna of the second sub-array among two adjacent sub-arrays.

[0094] In this scheme, it is possible to suppress the grating lobes in the arrangement direction of the antenna array elements. As Figure 5 shown in (b) of Figure 5 , the antenna can suppress the grating lobes in the horizontal direction. If it is necessary to suppress the scanning grating lobes in other directions, such as the vertical direction, then the number of antenna elements within the sub-array needs to be correspondingly increased.

[0095] It can be seen that in the above scheme, the range (scanning angle) of the received or transmitted signals of the antenna array is related to the spacing between the antennas in the antenna array. When the spacing between the antennas in the antenna array is fixed, the scanning angle of the antenna array is limited, which will thus lead to limited application scenarios of the antenna system.

[0096] In addition, in some scenarios, wideband antennas are designed for the antennas in the transmit-receive common-aperture antenna array, covering both the transmit and receive frequency bands, and the antenna feed point is shared for transmission and reception, that is, one feed excitation port, such as Figure 6It is an antenna system corresponding to a transmit-receive common-aperture antenna array. Among them, the baseband is connected to a transceiver (including an upconverter and a downconverter). The first port of the transceiver is connected to Filter 1. Filter 1 is connected to Amplifier 1. Amplifier 1 is connected to the first port of the duplexer. The second port of the transceiver is connected to Filter 2. Filter 2 is connected to Amplifier 2 (such as a low-noise amplifier). Amplifier 2 is connected to the second port of the duplexer. The third port of the duplexer is connected to the antenna. In the receiving band, the transmit-channel noise floor is suppressed below the receiving sensitivity by a duplexer with high suppression. However, the higher the suppression, the larger the size of the duplexer. For the antenna system of a transmit-receive common-aperture antenna array, the layout is not sufficient to place a duplexer with high suppression. And for a large-scale antenna array, there will be a large number of duplexers, which will lead to a relatively high system cost.

[0097] It should be understood that the baseband in the embodiments of the present application refers to a baseband module, or is also called a baseband processing module, and will not be elaborated hereinafter.

[0098] Next, the technical solutions in the present application will be described with reference to the accompanying drawings.

[0099] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as a wireless fidelity (WiFi) system, a vehicle to everything (V2X) communication system, a device-to-device (D2D) communication system, a vehicle networking communication system, a 4th generation (4G) mobile communication system, such as a long term evolution (LTE) system, a worldwide interoperability for microwave access (WiMAX) communication system, a 5th generation (5G) mobile communication system, such as a new radio (NR) system, and future communication systems, such as a 6th generation (6G) mobile communication system, etc.

[0100] The present application will present various aspects, embodiments or features around a system that may include multiple devices, components, modules, etc. It should be understood and clear that each system may include additional devices, components, modules, etc., and / or may not include all the devices, components, modules, etc. discussed in conjunction with the accompanying drawings. In addition, combinations of these solutions can also be used.

[0101] In addition, in the embodiments of the present application, words such as "exemplarily" and "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as an "example" in the present application should not be construed as being more preferred or more advantageous than other embodiments or design solutions. Rather, the use of the word "example" is intended to present concepts in a specific manner.

[0102] First, in the present application, "for indicating" may include direct indication and indirect indication. When describing that a certain "information" is for indicating A, it may include that the information directly indicates A or indirectly indicates A, and does not mean that A must be carried in the information.

[0103] Second, in the embodiments shown below, the first, second, and various numerical numbers are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. For example, to distinguish different indication information.

[0104] Third, "preset", or "predefined", or "preconfigured" can be implemented by pre-saving corresponding codes, tables or other ways that can be used to indicate relevant information in a device (for example, including a terminal and a network device), and can also be specified in advance in a protocol. The present application does not limit its specific implementation manner. Among them, "saving" may mean saving in one or more memories. The one or more memories may be separately provided, or may be integrated in an encoder or decoder, a processor, or a communication device. The one or more memories may also be partially separately provided and partially integrated in a decoder, a processor, or a communication device. The type of the memory may be any form of storage medium, and the present application does not limit this.

[0105] The network architecture and service scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those of ordinary skill in the art know that with the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0106] The network architecture and service scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those of ordinary skill in the art know that with the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0107] To facilitate the understanding of the embodiments of the present application, first, Figure 7 the communication system shown in Figure 7Schematic diagram of an architecture of a communication system applicable to the communication method provided in an embodiment of this application.

[0108] As Figure 7 shown, the communication system includes network devices (701a to 701c) and terminal devices (702a to 702f).

[0109] The terminal devices can be connected to the network devices wirelessly, and the network devices can be connected to the core network ( Figure 7 not shown in the figure) either wired or wirelessly.

[0110] Optionally, information interaction can be carried out between any two network devices, and information interaction can be carried out between any two terminal devices.

[0111] Among them, information interaction can be carried out between the network devices and the terminal devices.

[0112] The terminal device can be a terminal with transceiver functions, or can also be a chip or chip system disposed in the terminal. The terminal can also be referred to as user equipment (UE), access terminal, subscriber unit, user station, mobile station (MS), mobile phone, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device in the embodiments of the present application can be a mobile phone, cellular phone, smart phone, tablet computer (Pad), wireless data card, personal digital assistant (PDA), wireless modem, handset, laptop computer, machine type communication (MTC) terminal, computer with wireless transceiver function, virtual reality (VR) terminal, augmented reality (AR) terminal, smart home device (such as refrigerator, TV, air conditioner, electricity meter, etc.), smart robot, robotic arm, workshop equipment, wireless terminal in self-driving, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in telemedical, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, in-vehicle terminal, roadside unit (RSU) with terminal function, flight device (such as smart robot, hot air balloon, unmanned aerial vehicle, airplane), etc. The terminal in the present application can also be an in-vehicle module, in-vehicle module, in-vehicle component, in-vehicle chip or in-vehicle unit built into a vehicle as one or more components or units. The terminal device can also be other devices with terminal functions. For example, the terminal device can also be a device that serves as a terminal function in D2D communication. The embodiments of the present application do not limit the device form of the terminal device, and can be a device for realizing the functions of the terminal; it can also be a device capable of supporting the terminal to realize the functions, such as a chip system. The device can be installed in the terminal or used in matching with the terminal. In the embodiments of the present application, the chip system can be composed of chips, or can also include chips and other discrete devices.

[0113] The network device can be a device with wireless transceiver functions, or it can also be a chip or chip system disposed in the device. It is located in the access network (AN) of the communication system and is used to provide access services for terminal devices. For example, the network device can be referred to as a radio access network (RAN) device. Specifically, it can be an access network device for the next-generation mobile communication system, such as a 6G base station. Or, in the next-generation mobile communication system, the network device can also have other naming methods, all of which are covered by the protection scope of the embodiments of this application, and this application does not make any limitations in this regard. Or, the network device can also include 5G, such as the gNB in the new radio (NR) system, or one or a group (including multiple antenna panels) of antenna panels of the base station in 5G. Or, it can also be a network node that constitutes a gNB, a transmission and reception point (TRP) or a transmission point (TP), or a transmission measurement function (TMF), such as a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), an RSU with base station functions, or a wired access gateway, or a core network element of 5G, etc. Or, the network device can also include: an access point (AP) in a wireless fidelity (WiFi) system, a wireless relay node, a wireless backhaul node, various forms of macro base stations, micro base stations (also called small stations), relay stations, access points, wearable devices, in-vehicle devices, and so on.

[0114] Among them, the CU and the DU can be set separately, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as being included in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH). It can be understood that the network device can be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU can be classified as a network device in the radio access network (RAN), or the CU can be classified as a network device in the core network (CN), which is not limited herein. In different systems, the CU (or CU-CP and CU-UP), DU, or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU can also be called an O-CU (open CU), the DU can also be called an O-DU, the CU-CP can also be called an O-CU-CP, the CU-UP can also be called an O-CU-UP, and the RU can also be called an O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU, and RU are used as examples in this application. Any one of the CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. In the embodiments of this application, the form of the network device is not limited. The device for implementing the functions of the network device can be the network device; it can also be a device capable of supporting the network device to implement this function, such as a chip system. This device can be installed in the network device or used in matching with the network device.

[0115] It should be noted that the communication method provided in the embodiments of this application can be applicable to Figure 7 any two nodes shown, such as between terminal devices, between network devices, and between a terminal device and a network device. The specific implementation can refer to the following method embodiments and will not be elaborated herein.

[0116] It should be pointed out that the solutions in the embodiments of this application can also be applied to other communication systems, and the corresponding names can also be replaced with the names of the corresponding functions in other communication systems.

[0117] It should be understood that Figure 7 is only a simplified schematic diagram for easy understanding. Other network devices and / or other terminal devices may also be included in this communication system, Figure 7 which are not drawn herein.

[0118] In order to improve the problem of limited application scenarios of the antenna system, an embodiment of the present application provides an antenna system. The antenna system may include multiple antenna units. Each of the multiple antenna units includes a first antenna and a second antenna. Among them, the operating mode of the first antenna includes a high-order mode in a first frequency band, and the operating mode of the second antenna includes a main mode in the first frequency band. In this way, the antenna system can receive or transmit signals based on the first antenna and the second antenna. Since the gains generated by the main mode in the first frequency band and the high-order mode in the first frequency band are synthesized with each other, when the first antenna operates in the high-order mode in the first frequency band, the grating lobes generated when the second antenna operates in the main mode can be suppressed, so that it can be applied to more scenarios.

[0119] The following will combine Figures 8 - 25 to specifically elaborate on the antenna system provided by the embodiment of the present application. The antenna system can be applied to any device such as Figure 7 shown, such as a terminal device or a network device.

[0120] Such as Figure 8 shown, the antenna system includes multiple antenna units. Among them, each antenna unit includes a first antenna and a second antenna. The operating mode of the first antenna includes a high-order mode in a first frequency band, and the operating mode of the second antenna includes a main mode in the first frequency band. The first antenna and the second antenna are located in the same planar antenna array.

[0121] The operating mode of the first antenna including the high-order mode in the first frequency band means that when the first antenna operates in the first frequency band, it is in the high-order mode. Or rather, the first antenna operates in the high-order mode when operating in the first frequency band. Or rather, the operating frequency band when the first antenna operates in the high-order mode is the first frequency band. In this case, the first antenna includes a radiation structure (hereinafter all referred to as a radiator) that operates in the high-order mode in the first frequency band. Among them, the radiation pattern of the high-order mode corresponding to the azimuth angle of 0° or 90° is as Figure 9 shown.

[0122] It should be understood that the main mode may include modes such as TM10 or TM01. It should be understood that the main mode here is only for example. In actual implementation, the main mode may also be other possible modes. The high-order mode may include the TMn1 mode, where n may be an integer greater than or equal to 2. Or rather, the high-order mode may include the TM2m mode, where m is an integer greater than or equal to 1. The high-order mode here is only for example. In actual implementation, the high-order mode may also be other possible modes, which will not be elaborated here.

[0123] The operating mode of the second antenna includes the main mode in the first frequency band, which means that when the second antenna operates in the second frequency band, it is in the main mode, or, the second antenna operates in the main mode in the second frequency band, or, the operating frequency band when the second antenna operates in the main mode is the first frequency band. In this case, the second antenna includes a radiator operating in the main mode of the first frequency band, and the radiation pattern of the main mode corresponding to the azimuth angle of 0° or 90° is as Figure 10 shown.

[0124] It should be understood that for the same planar antenna array, the radiation surface of the antenna in the antenna array is consistent with the array surface direction of the antenna array. Since the first antenna and the second antenna are located in the same planar antenna array, it can be seen that the radiation surface of the first antenna is consistent with the array surface direction of the planar antenna array, and the radiation surface of the second antenna is consistent with the array surface direction of the planar antenna array. The radiation surface of the antenna being consistent with the array surface direction of the antenna array may mean that the included angle formed between the radiation surface of the antenna and the antenna array surface is less than or equal to the first angle threshold. The radiation surface of the first antenna being consistent with the array surface direction of the planar antenna array and the radiation surface of the second antenna being consistent with the array surface direction of the planar antenna array may mean that: the included angle formed between the radiation surface of the first antenna and the surface of the planar antenna is less than or equal to the first angle threshold, and the included angle formed between the radiation surface of the second antenna and the surface of the planar antenna is less than or equal to the first angle threshold. It can also be said that the normal direction of the element pattern of the first antenna is consistent with the normal direction of the element pattern of the second antenna. For example, the included angle between the normal direction of the element pattern of the first antenna and the normal direction of the element pattern of the second antenna is within the second angle threshold, where the second angle threshold is determined according to the first angle threshold. For example, the second angle threshold may be equal to the first angle threshold, or the second angle threshold is less than 2 times the first angle threshold.

[0125] In addition, the transceiver state of the first antenna in the high-order mode of the first frequency band is consistent with the transceiver state of the second antenna in the main mode of the first frequency band. That is to say, if the first antenna receives a signal in the high-order mode of the first frequency band, then the second antenna also receives a signal in the main mode of the first frequency band. Similarly, if the first antenna transmits a signal in the high-order mode of the first frequency band, then the second antenna also transmits a signal in the main mode of the first frequency band.

[0126] In the embodiments of the present application, the main mode can also be referred to as the main mode or the main pattern, and the high-order mode can also be referred to as the high-order mode.

[0127] In a possible implementation solution, the gain of the pattern of multiple antenna elements at the grating lobe position corresponding to the first antenna array is less than the gain of the grating lobe corresponding to the first antenna array. Wherein, the first antenna array is composed of the second antennas in each antenna unit of the multiple antenna units.

[0128] In a possible implementation, the central position of the first antenna is the same as that of the second antenna. For example, Figure 11 is a side view of the first antenna and the second antenna (in the direction parallel to the antenna array plane).

[0129] For each antenna element among multiple antenna elements, the position of the minimum amplitude of the radiation pattern of the first antenna in the high-order mode at the first frequency band coincides with the position of the maximum amplitude of the radiation pattern of the second antenna in the main mode at the first frequency band in the antenna element. That is to say, the amplitude of the radiation pattern of the first antenna in the high-order mode at the first frequency band is the minimum in the normal direction, and the amplitude of the radiation pattern of the second antenna in the main mode at the first frequency band is the maximum in the normal direction in the antenna element.

[0130] In a possible implementation, the excitations and amplitudes of the first antenna in the high-order mode at the first frequency band and the second antenna in the main mode at the first frequency band among multiple antenna elements are determined according to the second antenna array, the fourth antenna, and the fifth antenna. The second antenna array is composed of the first antenna and the second antenna in each antenna element of the above-mentioned multiple antenna elements. The fourth antenna is the antenna located at the main lobe position of the first antenna array, and the fifth antenna is the antenna located at the grating lobe position of the first antenna array.

[0131] Regarding the determination principle of the excitations and amplitudes of the first antenna in the high-order mode at the first frequency band and the second antenna in the main mode at the first frequency band among multiple antenna elements, reference can be made to the relevant introduction in the solution provided by Design 1 below, and details are not elaborated here.

[0132] Based on the above Figure 8 provided antenna element, the radiation pattern of an antenna element is as Figure 12 shown.

[0133] Based on Figure 8The provided antenna system includes antennas operating in high-order mode and main-mode at the same frequency band, such as the first antenna and the second antenna described above. Among them, the first antenna and the second antenna are located in the same planar antenna array. Since the radiation surface of the antenna in the planar antenna array is in the same direction as the antenna array plane, when each of the first antenna and the second antenna in multiple antenna units receives or transmits signals, the gain of the first antenna in the high-order mode at the first frequency band is synthesized with the gain of the second antenna in the main-mode at the first frequency band. That is to say, the gain of the first antenna in the high-order mode at the first frequency band in multiple antenna units is superimposed on the signals transmitted by the second antenna in the main-mode at the first frequency band in multiple antenna units, or the received signals are superimposed on each other. Thus, the energy of the grating lobes generated when the second antenna operates in the main-mode at the first frequency band can be reduced. When the spacing of the antennas is fixed, the scanning range of the antenna array in the antenna system can be increased. When the spacing of the antennas is fixed, it can be applied to more scenarios.

[0134] For easy understanding, the structure of each antenna unit in multiple antenna units is described in the following scenarios.

[0135] Scenario 1: The high-order mode of the first antenna at the first frequency band and the main-mode of the second antenna at the first frequency band are both used for transmitting signals. In this case, as Figure 13 shown, in each of the multiple antenna units: the first antenna is connected to the first radio frequency multifunctional device, and the first radio frequency multifunctional device is connected to the first port of the power splitter, that is, the first antenna is connected to the first port of the power splitter through the first radio frequency multifunctional device. The second antenna is connected to the second radio frequency multifunctional device, and the second radio frequency multifunctional device is connected to the second port of the power splitter. The third port of the power splitter is connected to the first amplifier, and the first amplifier is connected to the upconverter.

[0136] Optionally, the first antenna is connected to the first filter, and the first filter is connected to the first radio frequency multifunctional device, that is to say, the first antenna is connected to the first radio frequency multifunctional device through the first filter. Or, the first antenna is a filtering antenna. In this way, the mutual interference between the transmitting and receiving antennas can be reduced, and the isolation between the transmitting and receiving antennas can be improved.

[0137] Optionally, the second antenna is connected to the second filter, and the second filter is connected to the second radio frequency multifunctional device, that is to say, the second antenna is connected to the second radio frequency multifunctional device through the second filter. Or, the second antenna is a filtering antenna. In this way, the mutual interference between the transmitting and receiving antennas can be reduced, and the isolation between the transmitting and receiving antennas can be improved.

[0138] In addition, the upconverter can be connected to the baseband, where the baseband can be used to perform processing such as encoding on the signal to be transmitted and send the encoded signal to the upconverter.

[0139] Scenario 2, the high-order mode of the first antenna in the first frequency band and the main mode of the second antenna in the first frequency band are both used to receive signals. In this case, as Figure 14 shown, in each of the multiple antenna units: the first antenna is connected to the first radio frequency multifunctional device, and the first radio frequency multifunctional device is connected to the first port of the combiner, that is, the first antenna is connected to the first port of the combiner through the first radio frequency multifunctional device. The second antenna is connected to the second radio frequency multifunctional device, and the second radio frequency multifunctional device is connected to the second port of the combiner. The third port of the combiner is connected to the first amplifier, and the first amplifier is connected to the downconverter.

[0140] Optionally, the first antenna is connected to the first filter, and the first filter is connected to the first radio frequency multifunctional device, that is to say, the first antenna is connected to the first radio frequency multifunctional device through the first filter. Alternatively, the first antenna is a filtering antenna.

[0141] Optionally, the second antenna is connected to the second filter, and the second filter is connected to the second radio frequency multifunctional device, that is to say, the second antenna is connected to the second radio frequency multifunctional device through the second filter. Alternatively, the second antenna is a filtering antenna.

[0142] In addition, the downconverter can be connected to the baseband, where the baseband can be used to demodulate and decode the signals from the downconverter.

[0143] Regarding the implementation principle of the filtering antenna, reference can be made to the relevant introduction of the existing filtering antenna, which will not be elaborated here.

[0144] In a possible implementation, the operating mode of the first antenna further includes the main mode of the second frequency band, that is, the operating mode of the first antenna includes the high-order mode of the first frequency band and the main mode of the second frequency band, or rather, the first antenna operates in a hybrid mode.

[0145] The operating mode of the first antenna including the main mode of the second frequency band means that the operating mode of the first antenna in the second frequency band is the main mode, or rather, the first antenna operates in the main mode in the second frequency band, or rather, the operating frequency band when the first antenna operates in the main mode is the second frequency band. In this case, the first antenna includes a radiator operating in the main mode of the second frequency band.

[0146] In a possible implementation, the frequency of the first frequency band is greater than the frequency of the second frequency band.

[0147] The frequency of the first frequency band being greater than the frequency of the second frequency band can be that the center frequency of the first frequency band is greater than the center frequency of the second frequency band, or it can be that the minimum frequency of the first frequency band is greater than the maximum frequency of the second frequency band.

[0148] In this way, the first antenna can operate in different modes at different frequency bands. The first antenna can receive signals and also transmit signals, that is, the antenna array in the antenna system is a transceiver common-aperture antenna array. Thus, it is possible to suppress the grating lobes on the antenna with a higher operating frequency in the transceiver common-aperture antenna array, improve the array gain when the first antenna and the second antenna operate in the first frequency band, and thereby reduce the power consumption and interference of the antenna system. In addition, one antenna can operate in different modes at two frequency bands, that is, the transceiver can share the first antenna, so that the number of channels can be reduced and the cost can be lowered.

[0149] The transceiver state of the first antenna in the high-order mode of the first frequency band is the same as the transceiver state of the second antenna in the main mode of the first frequency band. That is to say, if the first antenna receives signals in the high-order mode of the first frequency band, then the second antenna also receives signals in the main mode of the first frequency band. Similarly, if the first antenna transmits signals in the high-order mode of the first frequency band, then the second antenna also transmits signals in the main mode of the first frequency band.

[0150] In a possible implementation, when the operating modes of the first antenna include the high-order mode of the first frequency band and the main mode of the second frequency band, as Figure 15 and Figure 16 shown, the first antenna is connected to the first radio frequency multifunctional device. It can be that the first antenna is connected to the common port of the duplexer, and the first port of the duplexer is connected to the first radio frequency multifunctional device, that is, the first antenna is connected to the first radio frequency multifunctional device through the multifunctional device.

[0151] Among them, as Figure 15 shown, in scenario 1, the second port of the duplexer can be connected to the third radio frequency multifunctional device, the third radio frequency multifunctional device is connected to the second amplifier, and the second amplifier is connected to the downconverter. In other words, the second port of the duplexer is sequentially connected to the downconverter through the third radio frequency multifunctional device and the second amplifier.

[0152] In this way, when the first antenna operates in the high-order mode of the first frequency band and the main mode of the second frequency band in the first frequency band, a single channel can be shared, thereby reducing the number of channels and lowering the cost.

[0153] It should be understood that in the case shown in Figure 15 , the downconverter can be connected to the baseband.

[0154] As Figure 16 shown, in scenario 2, the second port of the duplexer can be connected to the third radio frequency multifunctional device, the third radio frequency multifunctional device is connected to the second amplifier, and the second amplifier is connected to the upconverter. In other words, the second port of the duplexer is sequentially connected to the upconverter through the third radio frequency multifunctional device and the second amplifier.

[0155] In this way, when the first antenna operates in the high-order mode of the first frequency band and the main mode of the second frequency band in the first frequency band, a channel can be shared, thereby reducing the number of channels.

[0156] It should be understood that Figure 15 in the case shown, the upconverter can be connected to the baseband.

[0157] In a possible implementation, in the operating mode of the first antenna, the high-order mode of the first frequency band and the main mode of the second frequency band are orthogonal to each other. In the operating mode of the first antenna, the high-order mode of the first frequency band and the main mode of the first frequency band in the operating mode of the second antenna are orthogonal to each other. That is to say, the modes of different frequency bands on the same antenna are orthogonal to each other. In this way, the mutual interference between the transmitting and receiving antennas can be reduced, and the isolation degree between the transmitting and receiving antennas can be improved.

[0158] In a possible implementation, the antenna unit further includes a third antenna. Among them, the operating mode of the third antenna includes the main mode of the second frequency band. The frequency of the first frequency band is greater than the frequency of the second frequency band.

[0159] The operating mode of the third antenna including the main mode of the second frequency band means that the operating mode of the third antenna in the second frequency band is the main mode, or in other words, the third antenna operates in the main mode in the second frequency band, or the operating frequency band when the third antenna operates in the main mode is the second frequency band. In this case, the third antenna includes a radiator operating in the main mode of the second frequency band.

[0160] In this way, the antenna system can include antennas with different operating frequencies, which can be used for receiving signals or for transmitting signals, that is, the antenna array in the antenna system is a transmit-receive common-aperture antenna array.

[0161] As Figure 17 shown, in a possible design, the center position of the third antenna is the same as the center positions of the first antenna and the second antenna.

[0162] In the case where the antenna system further includes a third antenna and the operating mode of the third antenna includes the main mode of the second frequency band, in a possible implementation, in scenario 1, as Figure 18 shown, the third antenna is connected to a third radio frequency multifunctional device, the third radio frequency multifunctional device is connected to a second amplifier, and the second amplifier is connected to a downconverter. That is to say, the third antenna is sequentially connected to the downconverter through the third radio frequency multifunctional device and the second amplifier.

[0163] In this way, when the first antenna operates in the high-order mode of the first frequency band and the main mode of the second frequency band in the first frequency band, a channel can be shared, thereby reducing the number of channels.

[0164] It should be understood that in Figure 18 the case shown, the downconverter can be connected to the baseband.

[0165] In addition, optionally, the third converter can be connected to the third filter, and the third filter is connected to the third RF multi-functional device, that is, the third converter can be connected to the third RF multi-functional device through the third filter. Alternatively, the third antenna can be a filtering antenna.

[0166] As Figure 19 shown, the third antenna is connected to the third RF multi-functional device, the third RF multi-functional device is connected to the second amplifier, and the second amplifier is connected to the upconverter. That is, the third antenna is sequentially connected to the upconverter through the third RF multi-functional device and the second amplifier.

[0167] In this way, when the first antenna operates in the high-order mode in the first frequency band and the main mode in the second frequency band in the first frequency band, a common channel can be shared, thereby reducing the number of channels.

[0168] It should be understood that in Figure 19 the case shown, the upconverter can be connected to the baseband.

[0169] Similar to Figure 18 that in, the third converter can be connected to the third filter, and the third filter is connected to the third RF multi-functional device. That is, the third antenna is connected to the third RF multi-functional device through the third filter. Alternatively, the third antenna is a filtering antenna.

[0170] In this way, interference signals in the channel can be filtered out by the filter or the filtering antenna, reducing the use of the duplexer, thereby reducing the complexity of the antenna system.

[0171] In a possible implementation, the distance between two adjacent antenna units among multiple antenna units satisfies the relationship shown in the following formula (2):

[0172]

[0173] where λ is the wavelength of the first frequency, and θ0 is the pointing angle of the beam. That is, antenna units with a larger distance can be set in the antenna system, so as to suppress the grating lobes in the antenna array with a larger distance. The first frequency is a frequency within the first frequency band. For example, the first frequency can be the center frequency of the first frequency band.

[0174] where the distance between two adjacent antenna units can refer to the distance between the center points of the two antenna units, such as the geometric center points.

[0175] In some embodiments, a communication device is further provided, and the communication device may include as described aboveFigure 7 The provided antenna system. The implementation principle of the antenna system will not be elaborated here.

[0176] Design 1

[0177] In the antenna element, the high-order mode of the first antenna in the first frequency band corresponds to an antenna port, such as antenna port 1, and the main mode of the second antenna in the second frequency band corresponds to antenna port 2. Among them, the array formed by the second antenna is the first antenna array, and the first antenna array is as Figure 20 shown. Among them, the array pattern of the first antenna array is as Figure 21 shown. The second antenna array formed by the first antenna and the second antenna is as Figure 22 shown. Among them, in the second antenna array, the unit pattern corresponding to an antenna element (the working mode includes the high-order mode of the first antenna in the first frequency band and the main mode of the second antenna in the second frequency band) is as Figure 23 shown. According to the array pointing angle information of the first antenna array, the pointing angle (main lobe position) and grating lobe pointing angle (grating lobe position) of the main lobe corresponding to the first antenna array can be obtained. As Figure 24 shown, a fourth antenna can be placed in the direction of the pointing angle of the main lobe, and a fifth antenna can be placed in the direction of the pointing angle of the grating lobe. Then, signals are sent through antenna port 1 and antenna port 2, and the signals sent by antenna port 1 and antenna port 2 are received through the fourth antenna and the fifth antenna. In this way, the transmission coefficient matrix S between antenna port 1, antenna port 2, the fourth antenna, and the fifth antenna can be obtained tr . Based on the transmission coefficient matrix, the power transmission efficiency matrix S can be obtained. Among them, the power transmission efficiency matrix S satisfies the relationship shown in the following formula (3).

[0178] S = [S tr T *[S tr ; (3)

[0179] ​In addition, obtain the ratio W of the main lobe to the grating lobe (which can be determined according to the actual scenario), and weight the power transfer efficiency matrix S according to W to obtain S’ = W * S. Perform singular value decomposition on S’ to obtain the maximum eigenvalue of the transfer matrix (corresponding to the maximum transfer efficiency), and obtain the eigenvector corresponding to the maximum eigenvalue of the transfer matrix according to the maximum eigenvalue of the transfer matrix, so as to obtain the beam pointing weights (A1, α1; A2, α2) of the second antenna array when there is a null at the grating lobe position. Among them, A1 is the amplitude corresponding to antenna port 1 of the antenna array composed of the first antenna and the second antenna when there is a null at the grating lobe position, α1 is the phase corresponding to antenna port 1 of the antenna array composed of the first antenna and the second antenna when there is a null at the grating lobe position, A2 is the amplitude corresponding to antenna port 2 of the antenna array composed of the first antenna and the second antenna when there is a null at the grating lobe position, and α2 is the phase corresponding to antenna port 2 of the antenna array composed of the first antenna and the second antenna when there is a null at the grating lobe position.

[0180] (B0, β0) is the phase matching of the pointing angle of the conventional antenna array, that is, when there is no null at the grating lobe position, the excitation amplitude corresponding to antenna port 1 is B0, the excitation phase corresponding to antenna port 2 is β0, the excitation amplitude corresponding to antenna port 2 is B0, and the excitation phase corresponding to antenna port 2 is β0. Then, the actual excitations adopted on antenna port 1 and antenna port 1 are: the excitation amplitude of antenna port 1 is B0 * A1, the excitation phase of antenna port 1 is β0 + α1, the excitation amplitude of antenna port 21 is B0 * A2, and the excitation phase of antenna port 2 is β0 + α2. When the excitation amplitude of antenna port 1 is B0 * A1, the excitation phase of antenna port 1 is β0 + α1, the excitation amplitude of antenna port 21 is B0 * A2, and the excitation phase of antenna port 2 is β0 + α2, the array pattern of the second antenna array is as Figure 25 shown.

[0181] It should be understood that the transfer matrix S can also be obtained through simulation, which will not be elaborated here.

[0182] The first device can transmit and receive signals based on the antenna system provided above Figure 7 as follows. The following is a case-by-case description:

[0183] In some embodiments, the first device can be based on Figure 7 in the provided antenna system, the first antenna transmits signals in the high-order mode in the first frequency band and the second antenna transmits signals in the main mode in the first frequency band. The following is combined with Figure 26 for illustration. As Figure 26 shown, the communication method includes:

[0184] S2601, the first device generates the first information to be transmitted.

[0185] Among them, the excitation amplitude and excitation phase of the first information on each antenna port of the multiple antenna units are determined according to the main lobe position and grating lobe position corresponding to the first antenna array among the multiple antenna units, and the gain of the radiation pattern of the multiple antenna units at the grating lobe position corresponding to the first antenna array is less than the gain of the grating lobe corresponding to the first antenna array.

[0186] S2602. The first device sends the first information based on the high-order mode of the first antenna in the first frequency band and the main mode of the second antenna in the first frequency band.

[0187] Among them, Figure 26 The provided method may further include: S2603.

[0188] S2603. The first device receives the second information based on the main mode of the first antenna in the first frequency band in the antenna system.

[0189] Based on Figure 26 In the provided communication method, the first device may generate the first information and send the first information based on the antenna system. Since the antenna system includes antennas with high-order modes and main modes operating in the same frequency band, such as the first antenna and the second antenna mentioned above, and since the normal directions of the main mode and the high-order mode are the same, in this way, when the first antenna and the second antenna receive or send signals, the null position of the signal when the first antenna is in the high-order mode in the first frequency band is the same as the maximum gain position of the signal when the second antenna is in the high-order mode in the second frequency band, thereby suppressing the grating lobes generated when the second antenna operates in the high-order mode in the second frequency band.

[0190] In some embodiments, the first device may be based on Figure 7 In the provided antenna system, the first device receives signals based on the high-order mode of the first antenna in the first frequency band and the main mode of the second antenna in the first frequency band. The following is an illustration in conjunction with Figure 27 As described below. As Figure 27 shown, the communication method includes:

[0191] S2701. The first device receives the third information based on the high-order mode of the first antenna in the first frequency band and the main mode of the second antenna in the first frequency band.

[0192] Among them, the excitation amplitude and excitation phase of the second information on the antenna ports of the multiple antenna units are determined according to the main lobe position and grating lobe position corresponding to the antenna with the main mode of the first frequency band among the multiple antenna units, and the gain of the radiation pattern of the multiple antenna units at the grating lobe position corresponding to the first antenna array is less than the gain of the grating lobe corresponding to the first antenna array.

[0193] S2702. The first device sends the fourth information based on the main mode of the first antenna in the second frequency band.

[0194] Based on Figure 27 the provided communication method, the first device may receive second information based on an antenna system. Since the antenna system includes antennas in a higher-order mode and a main-mode operating in the same frequency band, such as the first antenna and the second antenna described above, and since the normal directions of the main-mode and the higher-order mode are the same, thus, when the first antenna and the second antenna receive or transmit signals, the null position of the signal in the higher-order mode of the first antenna at the first frequency band is consistent with the maximum gain position of the signal in the higher-order mode of the second antenna at the second frequency band, thereby suppressing the grating lobes generated when the second antenna operates in the higher-order mode at the second frequency band.

[0195] The above has been combined with Figures 8 - 27 to illustrate in detail the antenna system and communication method provided by the embodiments of the present application. The following will be combined with Figures 28 - 29 to illustrate in detail the communication device for executing the communication method provided by the embodiments of the present application.

[0196] Exemplarily, Figure 28 is a schematic structure of the communication device provided by the embodiments of the present application Figure 1 . As Figure 28 shown, the communication device 2800 includes: a processing module 2801 and a transceiver module 2802. For ease of explanation, Figure 28 only the main components of the communication device are shown.

[0197] In some embodiments, the communication device 2800 may be applicable to Figure 7 the communication system shown in Figure 26 and execute the functions of the communication device in the communication method shown in

[0198] Among them, the communication device 2800 includes a processing module 2801 and a transceiver module 2802, and among them, the transceiver module 2802 includes the antenna system provided as Figure 7 .

[0199] Among them, the processing module 2801 is used to generate the first information to be transmitted. Among them, the excitation amplitude and excitation phase of the first information on each antenna port of the multiple antenna units are determined according to the main lobe position and grating lobe position corresponding to the first antenna array among the multiple antenna units, and the gain of the radiation pattern of the multiple antenna units at the grating lobe position corresponding to the first antenna array is less than the gain of the grating lobe corresponding to the first antenna array. The transceiver module 2802 is used to transmit the first information based on the higher-order mode of the first antenna at the first frequency band and the main-mode of the second antenna at the first frequency band.

[0200] In some possible implementation solutions, the transceiver module 2802 is further used to receive the second information based on the main-mode of the first antenna at the first frequency band in the antenna system.

[0201] Optionally, the transceiver module 2802 may include a receiving module and a transmitting module ( Figure 28 not shown in Figure 28 ). The transceiver module 2802 is used to implement the transmitting and receiving functions of the communication device 2800.

[0202] Optionally, the communication device 2800 may further include a storage module ( Figure 28 not shown in Figure 28 ), and the storage module stores programs or instructions. When the processing module 2801 executes the programs or instructions, the communication device 2800 can execute Figure 26 the functions of the first device in the communication methods shown in any one of Figure 26 .

[0203] It should be understood that the processing module 2801 involved in the communication device 2800 may be implemented by a processor or processor-related circuit components, and may be a processor or a processing unit; the transceiver module 2802 may be implemented by a transceiver or transceiver-related circuit components, and may be a transceiver or a transceiver unit.

[0204] It should be noted that the communication device 2800 may be a terminal device or a network device, or may be a chip (system) or other components or assemblies that can be set in the terminal device or the network device, or may be a device including the terminal device or the network device. The present application does not make any limitations in this regard.

[0205] In addition, the technical effects of the communication device 2800 can refer to Figure 26 the technical effects of the communication methods shown in any one of Figure 26 , which will not be elaborated here.

[0206] In some other embodiments, the communication device 2800 may be applicable to Figure 7 the communication system shown in Figure 7 and execute Figure 27 the functions of the first device in the communication methods shown in Figure 27 .

[0207] Among them, the transceiver module 2802 is used to receive the third information based on the high-order mode of the first antenna in the first frequency band and the main mode of the second antenna in the first frequency band. Among them, the excitation amplitude and excitation phase of the second information on the antenna port in the plurality of antenna units are determined according to the main lobe position and grating lobe position of the antenna corresponding to the main mode of the first frequency band among the plurality of antenna units, and the gain of the radiation pattern of the plurality of antenna units at the grating lobe position corresponding to the first antenna array is less than the gain of the grating lobe corresponding to the first antenna array. The processing module 2801 is used to process the third information.

[0208] The transceiver module 2802 is further used to transmit the fourth information based on the main mode of the first antenna in the second frequency band.

[0209] Optionally, the transceiver module 2802 may include a receiving module and a transmitting module ( Figure 28(not shown in the figure). The transceiver module 2802 is used to implement the sending and receiving functions of the communication device 2800.

[0210] Optionally, the communication device 2800 may further include a storage module ( Figure 28 (not shown in the figure), and the storage module stores programs or instructions. When the processing module 2801 executes the programs or instructions, the communication device 2800 can perform Figure 27 the functions of the first device in the communication methods shown in any one of

[0211] It should be understood that the processing module 2801 involved in the communication device 2800 may be implemented by a processor or processor-related circuit components, and may be a processor or a processing unit; the transceiver module 2802 may be implemented by a transceiver or transceiver-related circuit components, and may be a transceiver or a transceiver unit.

[0212] It should be noted that the communication device 2800 may be a terminal device or a network device, or may be a chip (system) or other components or assemblies that can be set in the terminal device or the network device, or may be a device including the terminal device or the network device. The present application does not make any limitations on this.

[0213] In addition, the technical effects of the communication device 2800 can refer to Figure 27 the technical effects of the communication methods shown in any one of

[0214] Exemplarily, Figure 29 is a schematic structural diagram of the communication device provided by the embodiment of the present application. Figure 2 The communication device may be a terminal device or a network device, or may be a chip (system) or other components or assemblies that can be set in the terminal device or the network device. As Figure 29 shown, the communication device 2900 may include a processor 2901. Optionally, the communication device 2900 may further include a memory 2902 and / or a transceiver 2903. Among them, the processor 2901 is coupled to the memory 2902 and the transceiver 2903, and may be connected through a communication bus, for example.

[0215] Next, the specific components of the communication device 2900 will be introduced in conjunction with Figure 29 :

[0216] Among them, the processor 2901 is the control center of the communication device 2900, which can be a single processor or a collective term for multiple processing elements. For example, the processor 2901 is one or more central processing units (CPUs), or can be an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application. For example: one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs).

[0217] Optionally, the processor 2901 can execute various functions of the communication device 2900 by running or executing software programs stored in the memory 2902 and calling data stored in the memory 2902.

[0218] In a specific implementation, as an embodiment, the processor 2901 can include one or more CPUs, such as Figure 29 CPU0 and CPU1 shown in

[0219] In a specific implementation, as an embodiment, the communication device 2900 can also include multiple processors, such as Figure 29 the processor 2901 and the processor 2904 shown in

[0220] Each of these processors can be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). Here, the processor can refer to one or more devices, circuits, and / or processing cores for processing data (such as computer program instructions).

[0221] Optionally, the memory 2902 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or may also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM), or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media, or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 2902 may be integrated with the processor 2901 or may exist independently and be coupled to the processor 2901 through the interface circuit of the communication device 2900 ( Figure 29 not shown in the figure), and the embodiments of the present application do not make specific limitations in this regard.

[0222] The transceiver 2903 is used for communication with other communication devices. For example, when the communication device 2900 is a terminal device, the transceiver 2903 may be used for communication with a network device or with another terminal device. Another example is that when the communication device 2900 is a network device, the transceiver 2903 may be used for communication with a terminal device or with another network device.

[0223] Optionally, the transceiver 2903 may include a receiver and a transmitter ( Figure 29 not shown separately in the figure). Among them, the receiver is used to implement the receiving function, and the transmitter is used to implement the transmitting function.

[0224] Optionally, the transceiver 2903 may be integrated with the processor 2901 or may exist independently and be coupled to the processor 2901 through the interface circuit of the communication device 2900 ( Figure 29 not shown in the figure), and the embodiments of the present application do not make specific limitations in this regard.

[0225] It should be noted that Figure 29 the structure of the communication device 2900 shown in the figure does not constitute a limitation on the communication device. The actual communication device may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.

[0226] In addition, the technical effects of the communication device 2900 may refer to the technical effects of the communication method described in the above method embodiments, and will not be elaborated here.

[0227] It should be understood that the processor in the embodiments of the present application may be a CPU, and the processor may also be other general-purpose processors, DSPs, ASICs, FPGAs or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0228] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a ROM, a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an EEPROM or a flash memory. The volatile memory may be a RAM, which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchlink dynamic random access memory (SLDRAM), and direct rambus random access memory (DR RAM).

[0229] The above embodiments can be implemented in whole or in part by software, hardware (such as circuits), firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (such as infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state drive.

[0230] It should be understood that the term "and / or" as used herein simply describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. A and B can be singular or plural. Furthermore, the character " / " as used herein generally indicates an "or" relationship between the associated objects, but it may also indicate an "and / or" relationship. For specific understanding, please refer to the context.

[0231] In this application, "at least one" means one or more, and "plurality" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or plural.

[0232] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0233] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled professionals can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of this application.

[0234] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0235] In several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of the devices or units can be electrical, mechanical, or other forms.

[0236] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0237] In addition, the functional units in each embodiment of this application can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

[0238] When the above-mentioned functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, ROMs, RAMs, magnetic disks, or optical discs that can store program codes.

[0239] As described above, the above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of changes or substitutions, and all should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. An antenna system, characterized in that, The antenna system includes a plurality of antenna units, where each antenna unit includes a first antenna and a second antenna; The operating mode of the first antenna includes a high-order mode in a first frequency band, and the operating mode of the second antenna includes a main mode in the first frequency band. The first antenna and the second antenna are located in the same planar antenna array.

2. The antenna system according to claim 1, wherein The first antenna is connected to a first radio frequency multifunctional device, the first radio frequency multifunctional device is connected to a first port of a power splitter, the second antenna is connected to a second radio frequency multifunctional device, the second radio frequency multifunctional device is connected to a second port of the power splitter, a third port of the power splitter is connected to a first amplifier, and the first amplifier is connected to an upconverter.

3. The antenna system according to claim 1, characterized in that, The first antenna is connected to a first radio frequency multifunctional device, the first radio frequency multifunctional device is connected to a first port of a combiner, the second antenna is connected to a second radio frequency multifunctional device, the second radio frequency multifunctional device is connected to a second port of the combiner, a third port of the combiner is connected to a first amplifier, and the first amplifier is connected to a downconverter.

4. The antenna system according to claim 1, characterized in that, The operating mode of the first antenna further includes a main mode in a second frequency band; the frequency of the first frequency band is greater than the frequency of the second frequency band.

5. The antenna system according to claim 4, wherein The first antenna is connected to a common port of a duplexer, a first port of the duplexer is connected to a first radio frequency multifunctional device, and the first radio frequency multifunctional device is connected to a first port of a power splitter; the second antenna is connected to a second radio frequency multifunctional device, and the second radio frequency multifunctional device is connected to a second port of the power splitter; A third port of the power splitter is connected to a first amplifier, and the first amplifier is connected to an upconverter; A second port of the duplexer is connected to a third radio frequency multifunctional device, the third radio frequency multifunctional device is connected to a second amplifier, and the second amplifier is connected to a downconverter.

6. The antenna system according to claim 4, wherein The first antenna is connected to a common port of a duplexer, a first port of the duplexer is connected to a first radio frequency multifunctional device, and the first radio frequency multifunctional device is connected to a first port of a combiner; the second antenna is connected to a second radio frequency multifunctional device, and the second radio frequency multifunctional device is connected to a second port of the combiner; A third port of the combiner is connected to a first amplifier, and the first amplifier is connected to a downconverter; A second port of the duplexer is connected to a third radio frequency multifunctional device, the third radio frequency multifunctional device is connected to a second amplifier, and the second amplifier is connected to an upconverter.

7. The antenna system according to claim 1, wherein Each antenna unit further includes a third antenna; where the operating mode of the third antenna includes a main mode in the second frequency band; the frequency of the first frequency band is greater than the frequency of the second frequency band.

8. The antenna system according to claim 7, characterized in that, The first antenna is connected to a first radio frequency multifunctional device, and the first radio frequency multifunctional device is connected to a first port of a power splitter; the second antenna is connected to a second radio frequency multifunctional device, and the second radio frequency multifunctional device is connected to a second port of the power splitter; A third port of the power splitter is connected to a first amplifier, and the first amplifier is connected to an upconverter; The third antenna is connected to a third radio frequency multi-functional device, the third radio frequency multi-functional device is connected to a second amplifier, and the second amplifier is connected to a down-converter.

9. The antenna system according to claim 7, wherein The first antenna is connected to a first radio frequency multi-functional device, and the first radio frequency multi-functional device is connected to a first port of a combiner; the second antenna is connected to a second radio frequency multi-functional device, and the second radio frequency multi-functional device is connected to a second port of the combiner; A third port of the combiner is connected to a first amplifier, and the first amplifier is connected to a down-converter; The third antenna is connected to a third radio frequency multi-functional device, the third radio frequency multi-functional device is connected to a second amplifier, and the second amplifier is connected to an up-converter.

10. The antenna system according to claim 8 or 9, wherein The first antenna is connected to the first radio frequency multi-functional device through a first filter, or the first antenna is a filtering antenna; The second antenna is connected to the second radio frequency multi-functional device through a second filter, or the second antenna is a filtering antenna; The third antenna is connected to the third radio frequency multi-functional device through a third filter, or the third antenna is a filtering antenna.

11. The antenna system according to any one of claims 1 to 10, characterized in that The spacing between two adjacent antenna elements among the multiple antenna elements satisfies the following relationship: where λ is the wavelength of the first frequency, and θ0 is the pointing angle of the beam.

12. The antenna system according to any one of claims 1-11, characterized in that, The gain of the radiation pattern of the multiple antenna elements at the grating lobe position corresponding to the first antenna array is less than the gain of the grating lobe corresponding to the first antenna array; wherein, the first antenna array is composed of the second antennas in each of the multiple antenna elements.

13. The antenna system according to claim 10, characterized in that, The excitation and amplitude of the first antenna and the second antenna are determined according to the second antenna array, the fourth antenna, and the fifth antenna; the second antenna array is composed of the first antenna and the second antenna in each of the multiple antenna elements; the fourth antenna is an antenna located at the main lobe position of the first antenna array, and the fifth antenna is an antenna located at the grating lobe position of the first antenna array.

14. A communication device, characterized in that, The communication device includes the antenna system according to any one of claims 1-13 above.

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