Antenna system and communication apparatus

Abstract

Provided in the present application are an antenna system and a communication apparatus, which can reduce the energy of grating lobes in antenna arrays, and thus are suitable for more scenarios, and can be applied to communication scenarios. The antenna system comprises a plurality of antenna units, wherein each antenna unit comprises a first antenna and a second antenna, operating modes of the first antenna comprising a high-order mode in a first frequency band, operating modes of the second antenna comprising a fundamental mode in the first frequency band, and the first antenna and the second antenna being located in a same planar antenna array.

Description

Antenna system and communication device

[0001] The present application claims priority from the Chinese patent application No. 202410146661.9 filed on February 01, 2024, and entitled "Antenna system and communication device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, and in particular to an antenna system and a communication device. BACKGROUND

[0003] In a communication scenario, an antenna system can implement signal receiving and transmitting in different directions through an antenna array to improve communication efficiency. However, the range (scanning angle) of the received signal or the transmitted signal of the antenna array is related to the spacing between the antennas in the antenna array. In the case that the spacing between the antennas in the antenna array is fixed, the scanning angle of the antenna array is limited, and in the case that the scanning angle of the antenna array is fixed, the spacing between the antennas in the antenna array is limited, thereby causing the application scenario of the antenna system to be limited.

[0004] SUMMARY

[0005] Embodiments of the present application provide an antenna system and a communication device, which can be applied to more scenarios.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] In a first aspect, an antenna system is provided. The antenna system includes a plurality of antenna units, wherein each antenna unit includes a first antenna and a second antenna. The working mode of the first antenna includes a high-order mode of a first frequency band, and the working mode of the second antenna includes a main mode of the first frequency band. The first antenna and the second antenna are located in the same planar antenna array.

[0008] Based on the antenna system provided in the first aspect, the antenna system includes antennas working in the same frequency band in the high-order mode and the main mode, such as the first antenna and the second antenna described above, wherein 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 surface, when the first antenna and the second antenna in each antenna unit of the plurality of antenna units receive signals or transmit signals, the gain of the first antenna in the high-order mode of the first frequency band and the gain of the second antenna in the main mode of the first frequency band are combined with each other, that is, the gain of the first antenna in the high-order mode of the first frequency band and the signal transmitted by the second antenna in the main mode of the first frequency band in the plurality of antenna units are superimposed with each other, or the received signals are superimposed with each other, so that the energy of the grating lobe generated by the second antenna working in the main mode of the first frequency band can be reduced, and in the case that the interval of the antennas is fixed, the scanning range of the antenna array in the antenna system can be increased, and in the case that the interval of the antennas is fixed, the antenna system can be applied to more scenarios.

[0009] 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 direction of the antenna array surface. 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 direction of the planar antenna array surface, and the radiation surface of the second antenna is consistent with the direction of the planar antenna array surface. The radiation surface of the antenna can be consistent with the direction of the antenna array surface, which means that the included angle between the radiation surface of the antenna and the antenna array surface is less than or equal to a first angle threshold. The radiation surface of the first antenna can be consistent with the direction of the planar antenna array surface, and the radiation surface of the second antenna can be consistent with the direction of the planar antenna array surface, which means that the included angle between the radiation surface of the first antenna and the antenna array surface of the planar antenna is less than or equal to the first angle threshold, and the included angle between the radiation surface of the second antenna and the antenna array 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 unit pattern of the first antenna is consistent with the normal direction of the unit pattern of the second antenna. For example, the included angle between the normal direction of the unit pattern of the first antenna and the normal direction of the unit pattern of the second antenna is within a second angle threshold, wherein the second angle threshold is determined according to the first angle threshold. For example, the second angle threshold can be equal to the first angle threshold, or the second angle threshold can be less than 2 times the first angle threshold.

[0010] In a possible implementation, the first antenna is connected with a first RF multifunctional device, the first RF multifunctional device is connected with a first port of a power divider, the second antenna is connected with a second RF multifunctional device, the second RF multifunctional device is connected with a second port of the power divider, a third port of the power divider is connected with a first amplifier, and the first amplifier is connected with an upconverter. That is, the first antenna and the second antenna are both connected with a transmitting channel, so that signals can be transmitted through the first antenna and the second antenna.

[0011] In a possible implementation, the first antenna is connected with a first RF multifunctional device, the first RF multifunctional device is connected with a first port of a combiner, the second antenna is connected with a second RF multifunctional device, the second RF multifunctional device is connected with a second port of the combiner, a third port of the combiner is connected with a first amplifier, and the first amplifier is connected with a downconverter. That is, the first antenna and the second antenna are both connected with a receiving channel, so that signals can be received through the first antenna and the second antenna.

[0012] In a possible implementation, the working mode of the first antenna further includes a main mode of a second frequency band. The frequency of the first frequency band is greater than the frequency of the second frequency band. That is, the first antenna can work in different modes of different frequency bands, and the first antenna can receive signals or transmit signals, that is, the antenna array in the antenna system is a transceiving co-boresight antenna array, so that the suppression of the grating lobe on the antenna with a higher working frequency in the transceiving co-boresight antenna array can be implemented, the array gain of the first antenna and the second antenna when working in the first frequency band is improved, and thus the power consumption and interference of the antenna system are reduced. In addition, one antenna can work in different modes of two frequency bands, that is, the first antenna can be shared by transceiving, so that the number of channels can be reduced.

[0013] In a possible implementation, the first antenna is connected with a common port of a diplexer, a first port of the diplexer is connected with a first RF multifunctional device, and the first RF multifunctional device is connected with a first port of a power divider; the second antenna is connected with a second RF multifunctional device, and the second RF multifunctional device is connected with a second port of the power divider. A third port of the power divider is connected with a first amplifier, and the first amplifier is connected with an upconverter. A second port of the diplexer is connected with a third RF multifunctional device, the third RF multifunctional device is connected with a second amplifier, and the second amplifier is connected with a downconverter. In this way, the first antenna can share one channel when working in a high-order mode of a first frequency band and a main mode of a second frequency band in the first frequency band, and thus the number of channels can be reduced.

[0014] In a possible implementation, the first antenna is connected with a common port of a diplexer, a first port of the diplexer is connected with a first radio frequency multifunctional device, and the first radio frequency multifunctional device is connected with a first port of a combiner; the second antenna is connected with a second radio frequency multifunctional device, and the second radio frequency multifunctional device is connected with a second port of the combiner. A third port of the combiner is connected with a first amplifier, and the first amplifier is connected with a frequency downconverter. A second port of the diplexer is connected with a third radio frequency multifunctional device, the third radio frequency multifunctional device is connected with a second amplifier, and the second amplifier is connected with a frequency upconverter. In this way, the first antenna can share one channel when the high-order mode of the first frequency band and the main mode of the first frequency band of the second frequency band work, and thus the number of channels can be reduced.

[0015] In a possible implementation, 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 working mode of the first antenna. The high-order mode of the first frequency band in the working mode of the first antenna and the main mode of the first frequency band in the working mode of the second antenna are orthogonal to each other. That is, the modes of different frequency bands in the antenna system are orthogonal to each other, and thus the mutual interference between the transmitting and receiving antennas can be reduced, and the isolation between the transmitting and receiving antennas can be improved.

[0016] In a possible implementation, the second antenna is connected with the second radio frequency multifunctional device through a filter, or the second antenna is a filter 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.

[0017] In a possible implementation, the antenna unit further includes a third antenna. The working 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. In this way, the antenna system can include antennas of different working frequencies, which can be used for receiving signals or transmitting signals, that is, the antenna array in the antenna system is a transmitting-receiving co-boresight antenna array, and thus the suppression of grating lobes on the antenna with a higher working frequency in the antenna system can be implemented.

[0018] In a possible implementation, the first antenna is connected with a first radio frequency multifunctional device, and the first radio frequency multifunctional device is connected with a first port of a power divider; the second antenna is connected with a second radio frequency multifunctional device, and the second radio frequency multifunctional device is connected with a second port of the power divider. A third port of the power divider is connected with a first amplifier, and the first amplifier is connected with a frequency upconverter. The third antenna is connected with a third radio frequency multifunctional device, the third radio frequency multifunctional device is connected with a second amplifier, and the second amplifier is connected with a frequency downconverter. In this way, the first antenna can share one channel when the high-order mode of the first frequency band and the main mode of the first frequency band of the second frequency band work, and thus the number of channels can be reduced.

[0019] In a possible implementation, the first antenna is connected with a first radio frequency multifunctional device, the first radio frequency multifunctional device is connected with a first port of the combiner; the second antenna is connected with a second radio frequency multifunctional device, and the second radio frequency multifunctional device is connected with a second port of the combiner. A third port of the combiner is connected with the first amplifier, and the first amplifier is connected with the frequency downconverter. The third antenna is connected with a third radio frequency multifunctional device, the third radio frequency multifunctional device is connected with the second amplifier, and the second amplifier is connected with the frequency upconverter. In this way, the first antenna can share a channel when the first antenna works in a high-order mode of a first frequency band and a main mode of the first frequency band of the second frequency band, so that the number of channels can be reduced.

[0020] In a possible implementation, the first antenna is connected with a first radio frequency multifunctional device through a first filter, or the first antenna is a filter antenna. The second antenna is connected with a second radio frequency multifunctional device through a second filter, or the second antenna is a filter antenna. The third antenna is connected with a third radio frequency multifunctional device through a third filter, or the third antenna is a filter antenna. In this way, the filter or the filter antenna can filter out the interference signal in the channel, the use of the diplexer can be reduced, and the complexity of the antenna system can be reduced.

[0021] In a possible implementation, the distance between two adjacent antenna units in the plurality of antenna units satisfies the following relationship: wherein λ is the wavelength of the first frequency, and θ0 is the pointing angle of the beam. That is, the antenna system can be provided with an antenna unit with a larger distance, so that the suppression of the grating lobe in the antenna array with a larger distance can be implemented.

[0022] wherein the distance between the two adjacent antenna units can be the distance between the center points of the two antenna units.

[0023] In a possible implementation, the gain of the directional pattern of the plurality of antenna units at the grating lobe position of the first antenna array is less than the gain of the grating lobe of the first antenna array. The first antenna array is composed of the second antenna in each antenna unit of the plurality of antenna units.

[0024] In a possible implementation, the excitation and amplitude of the first antenna and the second antenna in the plurality of antenna units 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 unit of the plurality of antenna units. 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.

[0025] In a second aspect, a communication apparatus is provided. The communication apparatus includes the antenna system according to any one of the first aspect.

[0026] 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 a plurality of antenna units, each of which includes a first antenna and a second antenna. The working mode of the first antenna includes a high-order mode of a first frequency band, and the working mode of the second antenna includes a main mode of the first frequency band. The communication method includes: the first device generating first information to be sent. The excitation amplitude and excitation phase of the first information on each antenna port in the plurality of antenna units are determined according to the main lobe position and the grating lobe position corresponding to the first antenna array in the plurality of antenna units, and the gain of the directional 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 first device sends the first information based on the high-order mode of the first frequency band of the first antenna and the main mode of the first frequency band of the second antenna.

[0027] Based on the communication method provided in the third aspect, the first device can generate first information and send the first information based on the high-order mode of the first frequency band of the first antenna and the main mode of the first frequency band of the second antenna. Since the antenna system includes antennas working in the high-order mode and the main mode of the same frequency band, such as the first antenna and the second antenna described above, the normal direction of the main mode and the high-order mode is consistent, so when the first antenna and the second antenna receive signals or send signals, the null position of the signal when the first antenna works in the high-order mode of the first frequency band is consistent with the maximum gain position of the signal when the second antenna works in the high-order mode of the second frequency band, thereby suppressing the grating lobe generated when the second antenna works in the high-order mode of the second frequency band.

[0028] In some possible implementation schemes, the method provided in the third aspect can further include: the first device receiving second information based on the main mode of the first frequency band of the first antenna in the antenna system.

[0029] For the implementation of the plurality of antenna units in the third aspect, please refer to the related description of the first aspect, which will not be repeated here.

[0030] In a fourth aspect, a communication method is provided. The communication method is applied to a first device, where an antenna system of the first device includes a plurality of antenna units, and each of the antenna units includes a first antenna and a second antenna. A working mode of the first antenna includes a high-order mode of a first frequency band, and a working mode of the second antenna includes a main mode of the first frequency band. The communication method includes: receiving, by the first device, third information based on the high-order mode of the first frequency band of the first antenna and the main mode of the first frequency band of the second antenna. Wherein, an excitation amplitude and an excitation phase of the second information on an antenna port in the plurality of antenna units are determined according to a main lobe position and a grating lobe position corresponding to the antenna unit whose working mode is the main mode of the first frequency band in the plurality of antenna units, and a gain of a directional diagram of the plurality of antenna units at the grating lobe position corresponding to the first antenna array is less than a gain of the grating lobe corresponding to the first antenna array.

[0031] Based on the communication method provided in the fourth aspect, the first device can receive the second information based on the antenna system. Since the antenna system includes the first antenna and the second antenna working in the high-order mode and the main mode of the same frequency band, and the normal directions of the main mode and the high-order mode are consistent, when the first antenna and the second antenna receive signals or transmit signals, the null position of the signal when the first antenna is in the high-order mode of the first frequency band is consistent with the maximum gain position of the signal when the second antenna is in the high-order mode of the second frequency band, so that the grating lobe generated when the second antenna works in the high-order mode of the second frequency band can be suppressed.

[0032] In some possible implementation manners, the method provided in the fourth aspect can further include: transmitting, by the first device, fourth information based on the main mode of the second frequency band of the first antenna. The implementation of the plurality of antenna units in the fourth aspect can be referred to the related description of the first aspect, and details are not described herein.

[0033] In a fifth aspect, a communication device is provided. The communication device is configured to perform the communication method in any of the implementation manners of the first aspect or the second aspect.

[0034] In this application, the communication device in the fifth aspect can be a terminal device or a network device, or a chip (system) or other components or assemblies provided in the terminal device or the network device, or a device including the terminal device or the network device.

[0035] It should be understood that the communication device in the fifth aspect includes modules, units, or means corresponding to the communication method in any of the first aspect or the second aspect, which can 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 communication method.

[0036] In a sixth aspect, a communication apparatus is provided. The communication apparatus can include a processor configured to perform the communication method in any possible implementation of the first aspect or the second aspect.

[0037] In a possible design, the communication apparatus in the sixth aspect can further include a transceiver. The transceiver can be a transceiver circuit or an interface circuit. The transceiver can be configured to enable the communication apparatus in the sixth aspect to communicate with another communication apparatus.

[0038] In a possible design, the communication apparatus in the sixth aspect can further include a memory. The memory can be integrated with the processor, or can be separate from the processor. The memory can be configured to store a computer program and / or data related to the communication method in any of the first aspect or the second aspect.

[0039] In this application, the communication apparatus in the sixth aspect can be a terminal device or a network device, or a chip (system) or other component or assembly that can be arranged in the terminal device or the network device, or an apparatus including the terminal device or the network device.

[0040] In a seventh aspect, a communication apparatus is provided. The communication apparatus can include a processor coupled to a memory. The processor can be configured to execute a computer program stored in the memory, so that the communication apparatus performs the communication method in any possible implementation of the first aspect or the second aspect.

[0041] In a possible design, the communication apparatus in the seventh aspect can further include a transceiver. The transceiver can be a transceiver circuit or an interface circuit. The transceiver can be configured to enable the communication apparatus in the seventh aspect to communicate with another communication apparatus.

[0042] In this application, the communication apparatus in the seventh aspect can be a terminal device or a network device, or a chip (system) or other component or assembly that can be arranged in the terminal device or the network device, or an apparatus including the terminal device or the network device.

[0043] In an eighth aspect, a communication apparatus is provided. The communication apparatus can include a processor and a memory. The memory can be configured to store a computer program. When the processor executes the computer program, the communication apparatus can perform the communication method in any possible implementation of the first aspect or the second aspect.

[0044] In a possible design, the communication apparatus in the eighth aspect can further include a transceiver. The transceiver can be a transceiver circuit or an interface circuit. The transceiver can be configured to enable the communication apparatus in the eighth aspect to communicate with another communication apparatus.

[0045] In the present application, the communication apparatus of the eighth aspect can be a terminal device or a network device, or a chip (system) or other components or assemblies arranged in the terminal device or the network device, or an apparatus containing the terminal device or the network device.

[0046] In the ninth aspect, a communication apparatus is provided, including a processor, and the processor is configured to read a computer program in a memory and execute the communication method according to any one of the implementation manners of the first aspect or the second aspect.

[0047] In a possible design, the communication apparatus of the ninth aspect can further include a transceiver. The transceiver can be a transceiver circuit or an interface circuit. The transceiver can be configured to enable the communication apparatus of the ninth aspect to communicate with other communication apparatuses.

[0048] In the present application, the communication apparatus of the ninth aspect can be a terminal device or a network device, or a chip (system) or other components or assemblies arranged in the terminal device or the network device, or an apparatus containing the terminal device or the network device.

[0049] In the tenth aspect, a processor is provided. The processor is configured to execute the communication method according to any one of the implementation manners of the first aspect or the second aspect.

[0050] In the eleventh aspect, a communication system is provided. The communication system includes one or more terminal devices and one or more network devices.

[0051] In the twelfth aspect, a computer readable storage medium is provided, including a computer program or instructions, and when the computer program or instructions are run on a computer, the computer is caused to execute the communication method according to any one of the implementation manners of the first aspect or the second aspect.

[0052] In the thirteenth aspect, a computer program product is provided, including a computer program or instructions, and when the computer program or instructions are run on a computer, the computer is caused to execute the communication method according to any one of the implementation manners of the first aspect or the second aspect.

[0053] In addition, the technical effects of the communication apparatuses according to the fifth aspect to the thirteenth aspect can refer to the technical effects of the communication methods according to the first aspect or the second aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0054] FIG. 1 is a schematic diagram of a transceiver separation array according to an embodiment of the present application;

[0055] FIG. 2 is a schematic diagram of a grid-arranged antenna array according to an embodiment of the present application;

[0056] Fig. 3 is a schematic diagram of a grid-arranged antenna array according to an embodiment of the present application;

[0057] Fig. 4 is a schematic diagram of a grid-arranged antenna array according to an embodiment of the present application;

[0058] Fig. 5 is a schematic diagram of a subarray-arranged antenna array according to an embodiment of the present application;

[0059] Fig. 6 is a schematic diagram of a connection structure of an antenna in an antenna system according to an embodiment of the present application;

[0060] Fig. 7 is a schematic diagram of an architecture of a communication system according to an embodiment of the present application;

[0061] Fig. 8 is a schematic diagram of a structure of an antenna system according to an embodiment of the present application;

[0062] Fig. 9 is a schematic diagram of a radiation direction of a high-order mode according to an embodiment of the present application;

[0063] Fig. 10 is a schematic diagram of a radiation direction of a main mode according to an embodiment of the present application;

[0064] Fig. 11 is a schematic diagram of a position relationship of antennas according to an embodiment of the present application;

[0065] Fig. 12 is a schematic diagram of a radiation pattern corresponding to a main mode and a high-order mode according to an embodiment of the present application;

[0066] Fig. 13 is a schematic diagram of a structure of an antenna system according to an embodiment of the present application;

[0067] Fig. 14 is a schematic diagram of a structure of an antenna system according to an embodiment of the present application;

[0068] Fig. 15 is a schematic diagram of a structure of an antenna system according to an embodiment of the present application;

[0069] Fig. 16 is a schematic diagram of a structure of an antenna system according to an embodiment of the present application;

[0070] Fig. 17 is a schematic diagram of a position relationship of antennas according to an embodiment of the present application;

[0071] Fig. 18 is a schematic diagram of a structure of an antenna system according to an embodiment of the present application;

[0072] Fig. 19 is a schematic diagram of a structure of an antenna system according to an embodiment of the present application;

[0073] Fig. 20 is a schematic diagram of a single-mode antenna array according to an embodiment of the present application;

[0074] Fig. 21 is a schematic diagram of a radiation pattern of a single-mode antenna array according to an embodiment of the present application;

[0075] FIG. 22 is a schematic diagram of a hybrid mode antenna array according to an embodiment of the present application;

[0076] FIG. 23 is a directional diagram of a hybrid mode antenna according to an embodiment of the present application;

[0077] FIG. 24 is a schematic diagram of the positions of a fourth antenna and a fifth antenna according to an embodiment of the present application;

[0078] FIG. 25 is a directional diagram of an array in an antenna system according to an embodiment of the present application;

[0079] FIG. 26 is a flowchart of a communication method according to an embodiment of the present application;

[0080] FIG. 27 is a flowchart of a communication method according to an embodiment of the present application;

[0081] FIG. 28 is a schematic diagram of a communication apparatus according to an embodiment of the present application;

[0082] FIG. 29 is a schematic diagram of a communication apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0083] To facilitate understanding, the following first introduces the related technologies of the present application.

[0084] In a communication scenario, the communication efficiency can be improved by using an antenna array. When the distance between antennas in the antenna array (i.e., the distance 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 following formula (1), the antenna array has a main lobe and no grating lobe in a range where the pointing angle is less than or equal to θ0. When the pointing angle of the antenna array is greater than θ0, grating lobes appear.

[0085] where d is the distance 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. In the case where the distance between antennas is fixed, θ0 is the scanning angle of the beam of the antenna array.

[0086] For example, the antenna system of a communication apparatus (such as a terminal device or a network device) in a communication scenario can be used for signal reception and signal transmission, that is, the scenario where the antenna system of the communication apparatus includes a receiving antenna and a transmitting antenna, and the antenna array in the antenna system can be implemented in the form of a transceiver separation array. As shown in FIG. 1, in the transceiver separation array, the receiving antenna is on one array, i.e., a receiving antenna array, and the transmitting antenna is on another array, i.e., a transmitting antenna array, that is, the receiving antenna array and the transmitting antenna array are designed independently.

[0087] In the transceiver separation array, for the receiving antenna array or the transmitting antenna array, the spacing of the antennas still needs to satisfy the relationship shown in the above formula (1). That is, in the case of the spacing of the antennas in the antenna array being determined, the scanning angle of the beam of the antenna array is limited. In the case of the pointing angle of the antenna array being determined, the spacing of the antennas in the antenna array is limited. Therefore, the above scheme limits the application scenarios of the antenna system. In some communication scenarios, such as non-terrestrial network (NTN) communication scenarios, with the popularization of low earth orbit (LEO) satellite communication, the phased array terminal applied to large-scale terminals on the ground is developing rapidly, and a low-cost, low-power, small-size phased array terminal on the ground is in urgent need. Based on this, the antenna array in the antenna system can be implemented in the form of a transceiver common aperture antenna array. In the transceiver common aperture antenna array, the receiving antenna and the transmitting antenna are designed in the same antenna array. Therefore, compared with the antenna system using the transceiver separation array, in the case of the number of receiving antennas being the same and the number of transmitting antennas being the same, the size of the antenna array is smaller. Since the pointing angle of the antenna system is related to the spacing of the antennas, in the scanning range of the antenna array, the spacing between the antennas still needs to satisfy the relationship shown in the above formula (1). However, for the antenna system of the same communication device, the working frequency band of the receiving antenna and the working frequency band of the transmitting antenna can be inconsistent. In this case, if the transceiver common aperture antenna array is used, in the case of the scanning angles of the antenna array formed by the receiving antennas and the antenna array formed by the transmitting antennas being the same, the receiving antennas and the transmitting antennas cannot simultaneously satisfy the relationship shown in the above formula (1).

[0088] For example, when the scanning angle of the antenna array is 60°, the spacing of the antennas satisfies the above formula (1), and there is no grating lobe. However, when the spacing of the low-frequency antennas arranged in the same aperture satisfies the condition shown in the formula (1), placing the high-frequency antennas at the same positions will cause the spacing of the high-frequency antennas to not satisfy the condition shown in the formula (1). The high-frequency antennas and the low-frequency antennas are relative concepts, and the working frequency of the high-frequency antennas is higher than that of the low-frequency antennas. For example, the working frequency point of the receiving antenna unit (low-frequency antenna) is 20 gigahertz (GHz), the spacing between the receiving antennas is 7.5 millimeters (mm), the working frequency point of the transmitting antenna (high-frequency antenna) is 30 GHz, and the half wavelength is 5 mm. When the receiving antenna (low-frequency antenna) scans to 60°, the transmitting antenna (high-frequency antenna) also scans to 60°, which will produce a grating lobe, and the energy of the grating lobe is the same as that of the main lobe, so the performance of the transmitting antenna will be reduced by 3 decibels (dB).

[0089] In addition, in the transceiving co-aperture antenna, the spacing between the antenna units is limited, and the coupling between the transceiving antennas is large, thereby causing greater interference between the transceiving antennas.

[0090] To improve the grating lobe problem in the scanning of the transceiving co-aperture phased array, in some communication scenarios, different spacings can be used for antennas of different frequency bands. In this case, in the antenna array, the number of antennas of different operating frequency bands is different, and all the antennas are arranged according to different grids. The antennas of different operating frequency bands are still arranged according to the requirement of half wavelength, so as to meet the same angle scanning range of the antennas of different operating frequency bands. For ease of understanding, the following is an example of a specific antenna array, an antenna array scanning angle of 60°, a high-frequency antenna, and a low-frequency antenna. The high-frequency antenna refers to an antenna with a high-frequency frequency band, and the low-frequency antenna refers to an antenna with a low-frequency frequency band. It should be understood that the high-frequency frequency band and the low-frequency frequency band are relative, and the frequency of the high-frequency frequency band is higher than the frequency of the low-frequency frequency band.

[0091] It is assumed that the operating frequency point of the antenna 1 is 21.2 gigahertz (GHz), the operating frequency point of the antenna 1 corresponds to a wavelength λ1, the operating frequency point of the antenna 2 is 31 GHz, and the operating frequency point of the antenna 2 corresponds to a wavelength λ2. The spacing between two adjacent antennas 2 is d2=0.42λ2, and the spacing between two adjacent antennas 1 is d1=0.5λ1, wherein If the side length of the antenna array is Nλ2, then in one antenna array, the number of antennas 2 is 4.86N 2 , and the number of antennas 1 is 1.62N 2 . Then, the arrangement of the antennas in the antenna array is as shown in FIG. 2.

[0092] As shown in FIG. 3, it is assumed that the operating frequency point of the antenna 1 is 31 GHz, the operating frequency point of the antenna 1 corresponds to a wavelength λ1, the operating frequency point of the antenna 2 is 21.2 GHz, and the operating frequency point of the antenna 2 corresponds to a wavelength λ2. The spacing between two adjacent antennas 2 is d2=0.485λ2, and the spacing between two adjacent antennas 1 is d1=0.5λ1, wherein If the side length of the antenna array is Nλ2, then in one antenna array, the number of antennas 2 is 4N 2 , and the number of antennas 1 is 2N 2 . Then, the arrangement of the antennas in the antenna array is as shown in FIG. 3.

[0093] As shown in FIG. 4, assuming that the operating frequency point of the antenna 1 is 31 GHz, the wavelength corresponding to the operating frequency point of the antenna 1 is λ1, the operating frequency point of the antenna 2 is 21.2 GHz, and the wavelength corresponding to the operating frequency point of the antenna 2 is λ2, then the spacing between two adjacent antennas 2 is d2=0.485λ2, and the spacing between two adjacent antennas 1 is d1=0.5λ1, wherein, If the side length of the antenna array is Nλ2, then in one antenna array, the number of antennas 2 is 4N 2 , and the number of antennas 1 is 2N 2 . Then, the arrangement of the antennas in the antenna array is as shown in FIG. 4.

[0094] In other scenarios, the antennas in the antenna array can be arranged in the form of a subarray (subarray). In the subarray, the antennas are arranged in the form of a binary combination with a null in the radiation pattern. As shown in FIG. 5(a), the antennas in one antenna array can be arranged in the same direction, wherein a plurality of consecutive antennas are arranged as a subarray, and the antenna array includes a plurality of subarrays. As shown in FIG. 5(b), assuming that the antenna array includes subarray 1 to subarray 8, all the elements in the subarray 1 to subarray 8 are arranged in the same direction, such as the horizontal direction, and each subarray includes at least two elements. The wavelength corresponding to the operating frequency point of the antennas in the antenna array is λ, and for the same subarray, the spacing between the antennas in the subarray is d'=0.45λ. For the subarrays of the antenna array, the spacing between two adjacent subarrays is d=0.6λ. It should be understood that the spacing between two adjacent subarrays refers to the distance between the i-th antenna of the first subarray and the i-th antenna of the second subarray.

[0095] In this scheme, the suppression of the grating lobe in the arrangement direction of the antenna elements can be achieved. As shown in FIG. 5(b), the antennas can suppress the grating lobe in the horizontal direction. If it is necessary to suppress the scanning grating lobe in other directions, such as the vertical direction, the number of antenna elements in the subarray needs to be increased accordingly.

[0096] As can be seen from the above scheme, the range (scanning angle) of the received signal or the transmitted signal of the antenna array is related to the spacing between the antennas in the antenna array. In the case where the spacing between the antennas in the antenna array is fixed, the scanning angle of the antenna array is limited, which leads to the limitation of the application scenarios of the antenna system.

[0097] In addition, in some scenarios, the antenna in the transceiving common-aperture antenna array is designed to be a wide-band antenna covering two frequency bands for transmission and reception, and the antenna feed point is shared for transmission and reception, that is, one feed excitation port. FIG. 6 is an antenna system corresponding to a transceiving common-aperture antenna array. In the figure, the baseband is connected with a transceiver (including an up-converter and a down-converter), a first port of the transceiver is connected with a filter 1, the filter 1 is connected with an amplifier 1, the amplifier 1 is connected with a first port of a diplexer, a second port of the transceiver is connected with a filter 2, the filter 2 is connected with an amplifier 2 (such as a low-noise amplifier), the amplifier 2 is connected with a second port of the diplexer, and a third port of the diplexer is connected with an antenna. The receiving frequency band is suppressed below the receiving sensitivity by the high-suppression diplexer. However, the higher the suppression of the diplexer, the larger the size of the diplexer. For the antenna system of the transceiving common-aperture antenna array, the layout is not enough to place the high-suppression diplexer, and for a large-scale antenna array, there will be a large number of diplexers, which will lead to a high system cost.

[0098] It should be understood that the baseband in the embodiments of the present application refers to a baseband module, or a baseband processing module, which will not be described in detail hereinafter.

[0099] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0100] 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 a future communication system such as a 6th generation (6G) mobile communication system, etc.

[0101] The present application will present various aspects, embodiments or features around a system that can include a plurality of devices, components, modules, etc. It should be understood and appreciated that each system can include additional devices, components, modules, etc., and / or can not include all the devices, components, modules, etc. discussed in connection with the accompanying drawings. In addition, combinations of these solutions can also be used.

[0102] In addition, in the present application, the words "example" and "exemplary" are used as examples, illustrations, or instances. Any embodiment or design solution described as "example" in the present application should not be construed as preferable or advantageous over other embodiments or design solutions. In fact, the word "example" is used to present the concept in a concrete manner.

[0103] First, in the present application, "for indicating" can include for directly indicating and for indirectly indicating. When describing that "information" is for indicating A, it can include that the information directly indicates A or indirectly indicates A, and does not mean that A must be carried in the information.

[0104] Second, in the embodiments shown below, the first, second, and various numbers are only for differentiation for convenience of description, and are not used to limit the scope of the embodiments of the present application. For example, different indication information is distinguished.

[0105] Third, "preset" or "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables or other means for indicating related information in a device (for example, including a terminal and a network device), or by being pre-specified in a protocol, and the specific implementation manner is not limited in the present application. Wherein, "storing" can mean storing in one or more memories. The one or more memories can be separately arranged, or can be integrated in the encoder or decoder, processor, or communication device. The one or more memories can be part of the separately arranged, and part of the integrated in the decoder, processor, or communication device. The type of memory can be any form of storage medium, which is not limited in the present application.

[0106] The network architecture and service scenarios described in the embodiments of the present application are used to more clearly illustrate 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 skilled in the art can know that, with the evolution of network architecture and the appearance of new service scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0107] The network architecture and service scenarios described in the embodiments of the present application are used to more clearly illustrate 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 skilled in the art can know that, with the evolution of network architecture and the appearance of new service scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0108] In order to facilitate understanding of the embodiments of the present application, first, the communication system shown in FIG. 7 is taken as an example to describe the communication system applicable to the embodiments of the present application in detail. Exemplarily, FIG. 7 is a schematic diagram of the architecture of a communication system applicable to the communication method provided by the embodiments of the present application.

[0109] As shown in FIG. 7, the communication system includes network devices (701a to 701c) and terminal devices (702a to 702f).

[0110] The terminal devices can access the network devices through radio, and the network devices can access a core network (not shown in FIG. 7) through wired or radio.

[0111] Alternatively, information exchange is enabled between any two of the network devices, and information exchange is enabled between any two of the terminal devices.

[0112] The network devices and the terminal devices can exchange information.

[0113] The terminal device can be a terminal with transceiving function, or can also be a chip or chip system arranged in the terminal. The terminal can also be referred to as a user equipment (UE), an access terminal, a subscriber unit, a user station, a mobile station (MS), a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. The terminal device in the embodiments of the present application can be a mobile phone, a cellular phone, a smart phone, a Pad, a wireless data card, a personal digital assistant (PDA), a wireless modem, a handset, a laptop computer, a machine type communication (MTC) terminal, a computer with wireless transceiving function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a smart home device (for example, a refrigerator, a television, an air conditioner, an electricity meter, etc.), a smart robot, a mechanical arm, a plant device, a wireless terminal in self-driving, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in telemedicine, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a vehicle-mounted terminal, a road side unit (RSU) with terminal function, etc., a flight device (for example, a smart robot, a hot air balloon, a drone, an airplane), etc. The terminal of the present application can also be a vehicle-mounted module, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted 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 with terminal function in D2D communication. The embodiments of the present application do not limit the device form of the terminal device, which can be a device for realizing the function of the terminal; or can be a device capable of supporting the terminal to realize the function, such as a chip system. The device can be installed in the terminal or used with the terminal. In the embodiments of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices.

[0114] The network device can be a device with wireless transceiving function, or also can be a chip or chip system arranged in the device, located in an access network (AN) of a communication system, and used to provide access services for terminal devices. For example, the network device can be referred to as a radio access network (RAN) device, and specifically can be an access network device of a next-generation mobile communication system, for example, a 6G base station, or in a next-generation mobile communication system, the network device can also have other naming manners, which are all included in the protection scope of the embodiments of the present application, and the present application does not make any limitation on this. Alternatively, the network device can also include one or a group (including multiple antenna panels) of antenna panels of a gNB in a 5G, such as a new radio (NR) system, or a base station in a 5G, or can also be a network node constituting a gNB, a transmission and reception point (TRP or transmission point, TP), or a transmission measurement function (TMF), such as a centralized 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 function, or a wired access gateway, or a core network element of a 5G, and the like. Alternatively, 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 referred to as small stations), relay stations, access points, wearable devices, vehicle-mounted devices, and the like.

[0115] The CU and the DU can be separately arranged or can 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 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 the CU node and the DU node. In addition, the CU can be divided into a network device in an access network RAN, or the CU can be divided into a network device in a core network CN, which is not limited herein. In different systems, the CU (or CU-CP and CU-UP), the DU, or the RU can also have different names, but those skilled in the art can understand their meanings. For example, in an ORAN system, the CU can also be referred to as an O-CU (open CU), the DU can also be referred to as an O-DU, the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, and the RU can also be referred to as an O-RU. For the convenience of description, the CU, the CU-CP, the CU-UP, the DU, and the RU are taken as examples for description in this application. Any one of the CU (or the CU-CP, the CU-UP), the DU, and the 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, and the device for implementing the function of the network device can be the network device, or can be a device capable of supporting the network device to implement the function, such as a chip system. The device can be installed in the network device or used in combination with the network device.

[0116] It should be noted that the communication method provided in the embodiments of the present application can be applied between any two nodes in FIG. 7, such as between terminal devices, between network devices, and between a terminal device and a network device. The specific implementation can refer to the method embodiments described below, which will not be described here.

[0117] It should be noted that the scheme in the embodiments of the present application can also be applied to other communication systems, and the corresponding names can be replaced by the names of corresponding functions in other communication systems.

[0118] It should be understood that FIG. 7 is only a simplified schematic diagram for ease of understanding, and other network devices and / or other terminal devices can also be included in the communication system, which are not shown in FIG. 7.

[0119] In order to improve the application scene of the antenna system, the embodiment of the present application provides an antenna system, which can include a plurality of antenna units, each of the plurality of antenna units including a first antenna and a second antenna, wherein the working mode of the first antenna includes a high-order mode of a first frequency band, and the working mode of the second antenna includes a main mode of the first frequency band. In this way, the antenna system can receive or send signals based on the first antenna and the second antenna. Since the gain generated by the main mode of the first frequency band and the high-order mode of the first frequency band is combined with each other, when the first antenna works in the high-order mode of the first frequency band, the grating lobe generated when the second antenna works in the main mode can be suppressed, so that the antenna system can be applied to more scenes.

[0120] The antenna system provided by the embodiment of the present application will be described in detail below with reference to FIGS. 8-25. The antenna system can be applied to any one of the devices shown in FIG. 7, such as a terminal device or a network device.

[0121] As shown in FIG. 8, the antenna system includes a plurality of antenna units. Each of the plurality of antenna units includes a first antenna and a second antenna. The working mode of the first antenna includes a high-order mode of a first frequency band, the working mode of the second antenna includes a main mode of the first frequency band, and the first antenna and the second antenna are located in the same planar antenna array.

[0122] The working mode of the first antenna includes a high-order mode of a first frequency band, which means that the first antenna works in the high-order mode on the first frequency band, or in other words, the first antenna works in the high-order mode on the first frequency band, or in other words, the working frequency band of the first antenna working in the high-order mode is the first frequency band. In this case, the first antenna includes a radiation structure (hereinafter referred to as a radiator) working in the high-order mode of the first frequency band. The radiation pattern corresponding to the high-order mode on the azimuth angle of 0° or 90° is shown in FIG. 9.

[0123] It should be understood that the main mode can include TM10, TM01, etc. It should be understood that the main mode herein is only used as an example, and in actual implementation, the main mode can also be other possible modes. The high-order mode can include a TMn1 mode, where n can be an integer greater than or equal to 2, or the high-order mode can include a TM2m mode, where m is an integer greater than or equal to 1. The high-order mode herein is only used as an example, and in actual implementation, the high-order mode can also be other possible modes, which will not be described here.

[0124] The working mode of the second antenna includes a main mode of the first frequency band, which means that the second antenna works in the main mode on the second frequency band, or in other words, the second antenna works in the main mode on the second frequency band, or in other words, the working frequency band of the second antenna working in the main mode is the first frequency band. In this case, the second antenna includes a radiator working 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 shown in FIG. 10.

[0125] It should be understood that for the same planar antenna array, the radiation plane of the antenna in the antenna array is consistent with the array plane 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 plane of the first antenna is consistent with the array plane direction of the planar antenna array, and the radiation plane of the second antenna is consistent with the array plane direction of the planar antenna array. The radiation plane of the antenna can be consistent with the array plane direction of the antenna array, which means that the included angle between the radiation plane of the antenna and the antenna array plane is less than or equal to the first angle threshold. The radiation plane of the first antenna is consistent with the array plane direction of the planar antenna array, and the radiation plane of the second antenna is consistent with the array plane direction of the planar antenna array, which means that the included angle between the radiation plane of the first antenna and the array plane of the planar antenna is less than or equal to the first angle threshold, and the included angle between the radiation plane of the second antenna and the array plane 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 unit pattern of the first antenna is consistent with the normal direction of the unit pattern of the second antenna. For example, the included angle between the normal direction of the unit pattern of the first antenna and the normal direction of the unit pattern of the second antenna is within the second angle threshold, wherein the second angle threshold is determined according to the first angle threshold. For example, the second angle threshold can be equal to the first angle threshold, or the second angle threshold is less than 2 times the first angle threshold.

[0126] In addition, the transceiving state of the first antenna in the high-order mode of the first frequency band is consistent with the transceiving state of the second antenna in the main mode of the first frequency band. That is, if the first antenna receives signals in the high-order mode of the first frequency band, 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, the second antenna also transmits signals in the main mode of the first frequency band.

[0127] In the embodiments of the present application, the main mode can also be referred to as the main mode or the main mode, and the high-order mode can also be referred to as the high-order mode.

[0128] In a possible implementation, the gain of the 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 first antenna array is composed of the second antenna in each of the plurality of antenna units.

[0129] In a possible implementation, the center position of the first antenna is the same as the center position of the second antenna. For example, FIG. 11 is a side view (parallel to the antenna array plane) of the first antenna and the second antenna.

[0130] For each of the plurality of antenna units, the position of the minimum amplitude of the high-order mode directional diagram of the first antenna in the antenna unit is consistent with the position of the maximum amplitude of the main mode directional diagram of the second antenna in the antenna unit in the first frequency band, that is, the first antenna in the antenna unit works in the minimum amplitude of the normal direction of the high-order mode directional diagram in the first frequency band, and the second antenna in the antenna unit works in the maximum amplitude of the normal direction of the main mode directional diagram in the first frequency band.

[0131] In a possible implementation, the excitation and amplitude of the high-order mode of the first antenna in the first frequency band and the excitation and amplitude of the main mode of the second antenna in the first frequency band in the plurality of antenna units are determined according to a second antenna array, a fourth antenna, and a fifth antenna. The second antenna array is composed of the first antenna and the second antenna in each of the plurality of antenna units. The fourth antenna is an antenna located at a main lobe position of the first antenna array, and the fifth antenna is an antenna located at a grating lobe position of the first antenna array.

[0132] For the determination principle of the excitation and amplitude of the high-order mode of the first antenna in the first frequency band and the excitation and amplitude of the main mode of the second antenna in the first frequency band in the plurality of antenna units, refer to the related description in the scheme provided in Design 1 below, which will not be repeated here.

[0133] Based on the antenna unit provided in FIG. 8, the radiation pattern of one antenna unit is shown in FIG. 12.

[0134] Based on the antenna system provided in FIG. 8, the antenna system includes antennas working in the high-order mode and the main mode in the same frequency band, such as the first antenna and the second antenna described above, wherein the first antenna and the second antenna are located in the same planar antenna array. Because the antenna radiation surface in the planar antenna array is consistent with the direction of the antenna array plane, when the first antenna and the second antenna in each of the plurality of antenna units receive signals or send signals, the gain of the first antenna in the high-order mode in the first frequency band and the gain of the second antenna in the main mode in the first frequency band are synthesized with each other, that is, the gain of the first antenna in the high-order mode in the first frequency band and the gain of the second antenna in the main mode in the first frequency band are superimposed with each other, so that the energy of the grating lobe generated when the second antenna works in the main mode in the first frequency band can be reduced, the scanning range of the antenna array in the antenna system can be increased in the case that the interval of the antennas is fixed, and the antenna system can be applied to more scenarios in the case that the interval of the antennas is fixed.

[0135] For ease of understanding, the structure of each antenna unit in the plurality of antenna units is described below in scenarios.

[0136] Scenario 1: the high-order mode of the first antenna and the main mode of the second antenna in the first frequency band are both used for transmitting signals. In this case, as shown in FIG. 13, in each antenna unit in the plurality of antenna units: the first antenna is connected with the first radio frequency multifunctional device, the first radio frequency multifunctional device is connected with the first port of the power divider, that is, the first antenna is connected with the first port of the power divider through the first radio frequency multifunctional device. The second antenna is connected with the second radio frequency multifunctional device, the second radio frequency multifunctional device is connected with the second port of the power divider, the third port of the power divider is connected with the first amplifier, and the first amplifier is connected with the upconverter.

[0137] Optionally, the first antenna is connected with the first filter, and the first filter is connected with the first radio frequency multifunctional device, that is, the first antenna is connected with the first radio frequency multifunctional device through the first filter. Alternatively, the first antenna is a filter 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] Optionally, the second antenna is connected with the second filter, and the second filter is connected with the second radio frequency multifunctional device, that is, the second antenna is connected with the second radio frequency multifunctional device through the second filter. Alternatively, the second antenna is a filter 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.

[0139] In addition, the upconverter can be connected with the baseband, wherein the baseband can be used for encoding and the like processing of the to-be-transmitted signal, and transmitting the encoded signal to the upconverter.

[0140] Scenario 2: the high-order mode of the first antenna and the main mode of the second antenna in the first frequency band are both used for receiving signals. In this case, as shown in FIG. 14, in each antenna unit in the plurality of antenna units: the first antenna is connected with the first radio frequency multifunctional device, the first radio frequency multifunctional device is connected with the first port of the combiner, that is, the first antenna is connected with the first port of the combiner through the first radio frequency multifunctional device. The second antenna is connected with the second radio frequency multifunctional device, the second radio frequency multifunctional device is connected with the second port of the combiner, the third port of the combiner is connected with the first amplifier, and the first amplifier is connected with the downconverter.

[0141] Optionally, the first antenna is connected with the first filter, and the first filter is connected with the first radio frequency multifunctional device, that is, the first antenna is connected with the first radio frequency multifunctional device through the first filter. Alternatively, the first antenna is a filter antenna.

[0142] Optionally, the second antenna is connected with a second filter, and the second filter is connected with the second radio frequency multifunctional device, that is, the second antenna is connected with the second radio frequency multifunctional device through the second filter. Alternatively, the second antenna is a filter antenna.

[0143] In addition, the down converter can be connected with a baseband, wherein the baseband can be used for demodulation and decoding of the signal from the down converter.

[0144] The implementation principle of the filter antenna can refer to the related introduction of the existing filter antenna, and details are not described herein.

[0145] In a possible implementation, the working mode of the first antenna further includes a main mode of the second frequency band, that is, the working 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 in other words, the first antenna works in a hybrid mode.

[0146] The working mode of the first antenna includes the main mode of the second frequency band, which means that the working mode of the first antenna working on the second frequency band is the main mode, or in other words, the first antenna works in the main mode on the second frequency band, or in other words, the working frequency band of the first antenna working in the main mode is the second frequency band. In this case, the first antenna includes a radiator working in the main mode of the second frequency band.

[0147] In a possible implementation, the frequency of the first frequency band is greater than the frequency of the second frequency band.

[0148] The frequency of the first frequency band being greater than the frequency of the second frequency band can mean that the center frequency of the first frequency band is greater than the center frequency of the second frequency band, or can mean that the minimum frequency of the first frequency band is greater than the maximum frequency of the second frequency band.

[0149] In this way, the first antenna can work on different modes of different frequency bands, and the first antenna can receive signals or transmit signals, that is, the antenna array in the antenna system is a transceiving common aperture antenna array, so that the suppression of the grating lobe on the antenna with a higher working frequency in the transceiving common aperture antenna array can be implemented, and the array gain of the first antenna and the second antenna when working on the first frequency band is improved, thereby reducing the power consumption and interference of the antenna system. In addition, one antenna can work on different modes of two frequency bands, that is, the first antenna can be shared by transceiving, so that the number of channels can be reduced and the cost can be reduced.

[0150] The transceiving state of the first antenna in the high-order mode of the first frequency band is consistent with the transceiving state of the second antenna in the main mode of the first frequency band. That is, if the first antenna receives signals in the high-order mode of the first frequency band, 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, the second antenna also transmits signals in the main mode of the first frequency band.

[0151] In a possible implementation, as shown in FIG. 15 and FIG. 16, when the working mode of the first antenna includes the high-order mode of the first frequency band and the main mode of the second frequency band, the first antenna is connected with the first radio frequency multifunctional device, which can be that the first antenna is connected with the common port of the diplexer, the first port of the diplexer is connected with the first radio frequency multifunctional device, that is, the first antenna is connected with the first radio frequency multifunctional device through the multifunctional device.

[0152] As shown in FIG. 15, under scenario 1, the second port of the diplexer can be connected with the third radio frequency multifunctional device, the third radio frequency multifunctional device is connected with the second amplifier, and the second amplifier is connected with the down converter. In other words, the second port of the diplexer is connected with the down converter through the third radio frequency multifunctional device and the second amplifier in sequence.

[0153] In this way, when the first antenna works in the high-order mode of the first frequency band and the main mode of the first frequency band of the second frequency band, one channel can be shared, so that the number of channels can be reduced, and the cost can be reduced.

[0154] It should be understood that, in the case shown in FIG. 15, the down converter can be connected with the baseband.

[0155] As shown in FIG. 16, under scenario 2, the second port of the diplexer can be connected with the third radio frequency multifunctional device, the third radio frequency multifunctional device is connected with the second amplifier, and the second amplifier is connected with the up converter. In other words, the second port of the diplexer is connected with the up converter through the third radio frequency multifunctional device and the second amplifier in sequence.

[0156] In this way, when the first antenna works in the high-order mode of the first frequency band and the main mode of the first frequency band of the second frequency band, one channel can be shared, so that the number of channels can be reduced.

[0157] It should be understood that, in the case shown in FIG. 15, the up converter can be connected with the baseband.

[0158] In a possible implementation, in the working 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 working 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 working mode of the second antenna are orthogonal to each other. That is, the modes of different frequency bands on the same antenna are orthogonal to each other, so that the mutual interference between the transmitting and receiving antennas can be reduced, and the isolation between the transmitting and receiving antennas can be improved.

[0159] In a possible implementation, the antenna unit further includes a third antenna. The working 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.

[0160] The working mode of the third antenna includes the main mode of the second frequency band, which means that the working mode of the third antenna working on the second frequency band is the main mode, or in other words, the third antenna works on the second frequency band in the main mode, or in other words, the working frequency band of the third antenna working in the main mode is the second frequency band. In this case, the third antenna includes a radiator working in the main mode of the second frequency band.

[0161] In this way, the antenna system can include antennas with different working frequencies, which can be used for receiving signals and also for transmitting signals, that is, the antenna array in the antenna system is a transceiving common-aperture antenna array.

[0162] As shown in FIG. 17, in one possible design scheme, the center position of the third antenna is consistent with the center position of the first antenna and the center position of the second antenna.

[0163] In the case where the antenna system further includes the third antenna and the working mode of the third antenna includes the main mode of the second frequency band, in one possible implementation scheme, under scenario 1, as shown in FIG. 18, the third antenna is connected with the third radio frequency multifunctional device, the third radio frequency multifunctional device is connected with the second amplifier, and the second amplifier is connected with the frequency downconverter. That is, the third antenna is connected with the frequency downconverter in sequence through the third radio frequency multifunctional device and the second amplifier.

[0164] In this way, the first antenna can share one channel when the first antenna works in the high-order mode of the first frequency band and the second antenna works in the main mode of the first frequency band, thereby reducing the number of channels.

[0165] It should be understood that, in the case shown in FIG. 18, the frequency downconverter can be connected with the baseband.

[0166] In addition, optionally, the third frequency converter can be connected with the third filter, and the third filter is connected with the third radio frequency multifunctional device, that is, the third frequency converter can be connected with the third radio frequency multifunctional device through the third filter. Alternatively, the third antenna can be a filtering antenna.

[0167] As shown in FIG. 19, the third antenna is connected with the third radio frequency multifunctional device, the third radio frequency multifunctional device is connected with the second amplifier, and the second amplifier is connected with the frequency upconverter. That is, the third antenna is connected with the frequency upconverter in sequence through the third radio frequency multifunctional device and the second amplifier.

[0168] In this way, the first antenna can share one channel when the first antenna works in the high-order mode of the first frequency band and the second antenna works in the main mode of the first frequency band, thereby reducing the number of channels.

[0169] It should be understood that, in the case shown in FIG. 19, the frequency upconverter can be connected with the baseband.

[0170] Similarly as in FIG. 18, the third frequency converter can be connected with a third filter, and the third filter is connected with a third RF multi-functional device. That is, the third antenna is connected with the third RF multi-functional device through the third filter. Alternatively, the third antenna is a filter antenna.

[0171] In this way, the interference signal in the channel can be filtered out through the filter or the filter antenna, the use of the diplexer can be reduced, and thus the complexity of the antenna system can be reduced.

[0172] In a possible implementation, the distance between two adjacent antenna units in the plurality of antenna units satisfies the following formula (2):

[0173] wherein λ is the wavelength of the first frequency, and θ0is the pointing angle of the beam. That is, the antenna system can be provided with the antenna units with a larger distance, and thus the suppression of the grating lobe in the antenna array with a larger distance can be achieved. The first frequency is a frequency in the first frequency range, for example, the first frequency can be the center frequency of the first frequency range.

[0174] wherein the distance between the two adjacent antenna units can be 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 also provided, which can include the antenna system provided in FIG. 7. The implementation principle of the antenna system is not repeated here.

[0176] Design 1

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

[0178] In addition, a ratio W of the main lobe and the grating lobe is obtained (which can be determined according to the actual scene), the power transmission efficiency matrix S is weighted according to W to obtain S' = W * S. Singular value decomposition is performed on S' to obtain the maximum eigenvalue of the transmission matrix (corresponding to the maximum transmission efficiency), and the maximum eigenvalue of the transmission matrix is obtained according to the corresponding eigenvector, so that the beam pointing weight (A1, a1; A2, a2) of the second antenna array when the grating lobe is zeroed is obtained. Wherein, A1 is the amplitude corresponding to antenna port 1 of the antenna array composed of the first antenna and the second antenna when the grating lobe is zeroed, a1 is the phase corresponding to antenna port 1 of the antenna array composed of the first antenna and the second antenna when the grating lobe is zeroed, A2 is the amplitude corresponding to antenna port 2 of the antenna array composed of the first antenna and the second antenna when the grating lobe is zeroed, and a2 is the phase corresponding to antenna port 2 of the antenna array composed of the first antenna and the second antenna when the grating lobe is zeroed.

[0179] (B0, β0) is the conventional antenna array pointing angle matching, that is, when the grating lobe is not zeroed, the excitation amplitude corresponding to the antenna port 1 is B0, the excitation phase corresponding to the antenna port 2 is β0, the excitation amplitude corresponding to the antenna port 2 is B0, and the excitation phase corresponding to the antenna port 2 is β0. Then, the actual excitation on the antenna port 1 and the antenna port 1 is: the excitation amplitude of the antenna port 1 is B0*A1, the excitation phase of the antenna port 1 is β0+ a1, the excitation amplitude of the antenna port 21 is B0*A2, and the excitation phase of the antenna port 2 is β0+ a2. In the case that the excitation amplitude of the antenna port 1 is B0*A1, the excitation phase of the antenna port 1 is β0+ a1, the excitation amplitude of the antenna port 21 is B0*A2, and the excitation phase of the antenna port 2 is β0+ a2, the array pattern of the second antenna array is shown in FIG. 25.

[0180] It should be understood that the transmission matrix S can also be obtained by simulation, which will not be described here.

[0181] The first device can transceive signals based on the antenna system provided in FIG. 7. The following is described in the following cases:

[0182] In some embodiments, the first device can transmit signals based on the first antenna in the high-order mode of the first frequency band and the second antenna in the main mode of the first frequency band in the antenna system provided in FIG. 7. The following is described in conjunction with FIG. 26. As shown in FIG. 26, the communication method comprises:

[0183] S2601, the first device generates first information to be sent.

[0184] The excitation amplitude and excitation phase of the first information on each antenna port in the plurality of antenna units are determined according to the main lobe position and the grating lobe position corresponding to the first antenna array in the plurality of antenna units, and the gain of the directional 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.

[0185] S2602, the first device sends the first information based on 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.

[0186] The method provided in FIG. 26 can further include S2603.

[0187] S2603, the first device receives second information based on the main mode of the first antenna at the first frequency band in the antenna system.

[0188] Based on the communication method provided in FIG. 26, the first device can generate first information and send the first information based on the antenna system. Since the antenna system includes antennas working in high-order mode and main mode at the same frequency band, such as the first antenna and the second antenna described above, since the normal directions of the main mode and the high-order mode are consistent, when the first antenna and the second antenna receive signals or send signals, the null position of the signal when the first antenna is in the high-order mode at the first frequency band is consistent with the maximum gain position of the signal when the second antenna is in the high-order mode at the second frequency band, thereby suppressing the grating lobe generated when the second antenna works in the high-order mode at the second frequency band.

[0189] In some embodiments, the first device can receive signals based on 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 in the antenna system provided in FIG. 7. The following is described in combination with FIG. 27. As shown in FIG. 27, the communication method includes:

[0190] S2701, the first device receives third information based on 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.

[0191] The excitation amplitude and excitation phase of the second information on each antenna port in the plurality of antenna units are determined according to the main lobe position and the grating lobe position corresponding to the antenna working in the main mode of the first frequency band in the plurality of antenna units, and the gain of the directional 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.

[0192] S2702, the first device sends fourth information based on the main mode of the first antenna at the second frequency band.

[0193] Based on the communication method provided in FIG. 27, the first device can receive the second information based on the antenna system. Since the antenna system includes the high-order mode and the main mode of the antenna working in the same frequency band, such as the first antenna and the second antenna described above, since the normal direction of the main mode and the high-order mode is consistent, when the first antenna and the second antenna receive signals or transmit signals, the null position of the signal of the first antenna in the high-order mode of the first frequency band is consistent with the maximum gain position of the signal of the second antenna in the high-order mode of the second frequency band, thereby the grating lobe generated when the second antenna works in the high-order mode of the second frequency band can be suppressed.

[0194] The antenna system and the communication method provided by the embodiments of the present application are described in detail above in combination with FIG. 8-FIG. 27. The communication device for performing the communication method provided by the embodiments of the present application is described in detail below in combination with FIG. 28-FIG. 29.

[0195] Exemplarily, FIG. 28 is a structural schematic diagram I of the communication device provided by the embodiments of the present application. As shown in FIG. 28, the communication device 2800 includes a processing module 2801 and a transceiver module 2802. For the convenience of description, FIG. 28 only shows the main components of the communication device.

[0196] In some embodiments, the communication device 2800 can be applied to the communication system shown in FIG. 7, and perform the functions of the communication device in the communication method shown in FIG. 26.

[0197] The communication device 2800 includes the processing module 2801 and the transceiver module 2802, wherein the transceiver module 2802 includes the antenna system provided in FIG. 7.

[0198] The processing module 2801 is configured to generate the first information to be transmitted. The excitation amplitude and the excitation phase of the first information on each antenna port in the plurality of antenna units are determined according to the main lobe position and the grating lobe position corresponding to the first antenna array in the plurality of antenna units, and the gain of the directional diagram 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 transceiver module 2802 is configured to transmit 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.

[0199] In some possible implementation schemes, the transceiver module 2802 is further configured to receive the second information based on the main mode of the first antenna in the first frequency band in the antenna system.

[0200] Optionally, the transceiver module 2802 can include a receiving module and a transmitting module (not shown in FIG. 28). The transceiver module 2802 is configured to implement the transmitting function and the receiving function of the communication device 2800.

[0201] Optionally, the communication apparatus 2800 further includes a storage module (not shown in FIG. 28) storing programs or instructions. When the processing module 2801 executes the programs or instructions, the communication apparatus 2800 can perform the functions of the first device in any of the communication methods shown in FIG. 26.

[0202] It should be understood that the processing module 2801 involved in the communication apparatus 2800 can be implemented by a processor or a processor-related circuit component, and can be a processor or a processing unit; the transceiver module 2802 can be implemented by a transceiver or a transceiver-related circuit component, and can be a transceiver or a transceiving unit.

[0203] It should be noted that the communication apparatus 2800 can be a terminal device or a network device, or a chip (system) or other components or assemblies that can be arranged in a terminal device or a network device, or an apparatus containing a terminal device or a network device, which is not limited in the present application.

[0204] In addition, the technical effects of the communication apparatus 2800 can refer to the technical effects of any of the communication methods shown in FIG. 26, which will not be repeated here.

[0205] In other embodiments, the communication apparatus 2800 can be applied to the communication system shown in FIG. 7, and perform the functions of the first device in the communication method shown in FIG. 27.

[0206] The transceiver module 2802 is configured to receive third information based on 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. The excitation amplitude and excitation phase of the second information on the antenna ports in the plurality of antenna units are determined according to the main lobe position and the grating lobe position corresponding to the antenna whose working mode is the main mode of the first frequency band in the plurality of antenna units, and the gain of the directional diagram 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 configured to process the third information.

[0207] The transceiver module 2802 is further configured to transmit fourth information based on the main mode of the first antenna at the second frequency band.

[0208] Optionally, the transceiver module 2802 can include a receiving module and a transmitting module (not shown in FIG. 28). The transceiver module 2802 is configured to implement the transmitting function and the receiving function of the communication apparatus 2800.

[0209] Optionally, the communication apparatus 2800 further includes a storage module (not shown in FIG. 28) storing programs or instructions. When the processing module 2801 executes the programs or instructions, the communication apparatus 2800 can perform the functions of the first device in any one of the communication methods shown in FIG. 27.

[0210] It should be understood that the processing module 2801 involved in the communication apparatus 2800 can be implemented by a processor or processor-related circuit component, and can be a processor or processing unit; the transceiver module 2802 can be implemented by a transceiver or transceiver-related circuit component, and can be a transceiver or transceiving unit.

[0211] It should be noted that the communication apparatus 2800 can be a terminal device or a network device, or a chip (system) or other components or elements that can be arranged in the terminal device or the network device, or an apparatus including the terminal device or the network device, and the present application does not limit the same.

[0212] In addition, the technical effects of the communication apparatus 2800 can refer to the technical effects of any one of the communication methods shown in FIG. 27, which will not be repeated here.

[0213] Exemplarily, FIG. 29 is a structural schematic diagram of a communication apparatus provided by an embodiment of the present application. The communication apparatus can be a terminal device or a network device, or a chip (system) or other components or elements that can be arranged in the terminal device or the network device. As shown in FIG. 29, the communication apparatus 2900 can include a processor 2901. Optionally, the communication apparatus 2900 can further include a memory 2902 and / or a transceiver 2903. The processor 2901 is coupled with the memory 2902 and the transceiver 2903, for example, through a communication bus.

[0214] The various constituent components of the communication apparatus 2900 will be specifically introduced below in combination with FIG. 29:

[0215] The processor 2901 is the control center of the communication apparatus 2900, and can be one processor or a plurality of processing elements. For example, the processor 2901 is one or more central processing units (CPUs), application specific integrated circuits (ASICs), or one or more integrated circuits configured to implement one or more embodiments of the present application, such as one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs).

[0216] Optionally, the processor 2901 can execute various functions of the communication device 2900 by running or executing software programs stored within the memory 2902, and invoking data stored within the memory 2902.

[0217] In a specific implementation, as an example, the processor 2901 can include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 29.

[0218] In a specific implementation, as an example, the communication device 2900 can also include multiple processors, such as the processor 2901 and the processor 2904 shown in FIG. 29. Each of these processors can be a single-CPU or a multi-CPU. The processor herein can refer to one or more devices, circuits, and / or processing cores for processing data (such as computer program instructions).

[0219] The memory 2902 is configured to store software programs for implementing the solutions of the present application, and the processor 2901 is configured to control the execution. The specific implementation can refer to the above-mentioned method embodiments, and will not be repeated here.

[0220] Optionally, the memory 2902 can 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, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to this. The memory 2902 can be integrated with the processor 2901 or exist independently and be coupled with the processor 2901 through the interface circuit (not shown in FIG. 29) of the communication device 2900. The embodiments of the present application are not limited in this regard.

[0221] The transceiver 2903 is configured to communicate with other communication devices. For example, the communication device 2900 is a terminal device, and the transceiver 2903 can be configured to communicate with a network device or another terminal device. For another example, the communication device 2900 is a network device, and the transceiver 2903 can be configured to communicate with a terminal device or another network device.

[0222] Optionally, the transceiver 2903 can include a receiver and a transmitter (not shown separately in FIG. 29). The receiver is configured to implement the receiving function, and the transmitter is configured to implement the transmitting function.

[0223] Optionally, the transceiver 2903 can be integrated with the processor 2901, or can exist independently and be coupled to the processor 2901 through an interface circuit (not shown in FIG. 29) of the communication device 2900. The embodiments of the present application do not make a limitation in this regard.

[0224] It should be noted that the structure of the communication device 2900 shown in FIG. 29 does not constitute a limitation on the communication device, and an actual communication device can include more or fewer components than those shown, or combine certain components, or have different arrangement of components.

[0225] In addition, the technical effects of the communication device 2900 can refer to the technical effects of the communication method described in the above method embodiments, which will not be described here.

[0226] It should be understood that the processor in the embodiments of the present application can be a CPU, and can 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 can be a microprocessor or can also be any conventional processor.

[0227] It should also be understood that the memory in the embodiments of the present application can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. Among them, the nonvolatile memory can be ROM, programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), EEPROM or flash memory. The volatile memory can be RAM, which is used as an external cache. By way of example and 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 SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0228] The above-described embodiments can be implemented in whole or in part by software, hardware (such as a circuit), firmware, or any combination thereof. When implemented in software, the above-described embodiments can be implemented 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 programs are loaded or executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another, for example, the computer instructions can be transferred from one website, computer, server or data center to another website, computer, server or data center through wired (such as infrared, wireless, microwave, etc.) mode. 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, data center, etc. containing one or more available medium collections. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium. The semiconductor medium can be a solid state disk.

[0229] It should be understood that the term "and / or" in this document is merely used to describe associated relationship, and it can mean three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. In addition, the character " / " in this document generally means that the associated objects before and after the " / " are in an "or" relationship, but can also mean an "and / or" relationship, which can be understood according to the context before and after.

[0230] In this application, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or the like means any combination of the items, including a single item or any combination of multiple items. For example, at least one of a, b, or c can mean a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be singular or plural.

[0231] It should be understood that in various embodiments of the present application, the size of the sequence number of the above processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0232] Those skilled in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0233] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0234] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed objects can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0235] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, i.e., may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0236] In addition, the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present alone, or two or more units can be integrated in one unit.

[0237] The functions, if realized in the form of software functional units and sold or used as independent products, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application or the part of the present application that essentially contributes to the prior art or the part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various storage media that can store program codes, such as a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk or an optical disk.

[0238] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An antenna system, characterized in that: The antenna system includes a plurality of antenna units, wherein each antenna unit includes a first antenna and a second antenna; The working mode of the first antenna includes a high-order mode of a first frequency band, the working mode of the second antenna includes a main mode of the first frequency band, and 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 multi-function device, the first radio frequency multi-function device is connected to a first port of a power divider, the second antenna is connected to a second radio frequency multi-function device, the second radio frequency multi-function device is connected to a second port of the power divider, the third port of the power divider is connected to a first amplifier, and the first amplifier is connected to an up-converter.

3. The antenna system according to claim 1, wherein: The first antenna is connected to a first radio frequency multi-function device, the first radio frequency multi-function device is connected to a first port of a combiner, the second antenna is connected to a second radio frequency multi-function device, the second radio frequency multi-function device is connected to a second port of the combiner, the third port of the combiner is connected to a first amplifier, and the first amplifier is connected to a down converter.

4. The antenna system according to claim 1, wherein: The working mode of the first antenna also includes a main mode of the 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, characterized in that 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 multi-function device, and the first radio frequency multi-function device is connected to the first port of the power splitter; the second antenna is connected to the second radio frequency multi-function device, and the second radio frequency multi-function device is connected to the second port of the power splitter; The third port of the power divider is connected to the first amplifier, and the first amplifier is connected to the up-converter; The second port of the duplexer is connected to a third radio frequency multi-function device, the third radio frequency multi-function device is connected to a second amplifier, and the second amplifier is connected to a down converter.

6. The antenna system according to claim 4, wherein: 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 multi-function device, and the first radio frequency multi-function device is connected to the first port of the combiner; the second antenna is connected to the second radio frequency multi-function device, and the second radio frequency multi-function 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 down converter; The second port of the duplexer is connected to a third radio frequency multi-function device, the third radio frequency multi-function device is connected to a second amplifier, and the second amplifier is connected to an up-converter.

7. The antenna system according to claim 1, wherein: Each antenna unit further includes a third antenna; wherein the operating mode of the third antenna includes a main mode of the second frequency band; and 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, wherein: The first antenna is connected to a first radio frequency multi-function device, which is connected to a first port of a power divider; the second antenna is connected to a second radio frequency multi-function device, which is connected to a second port of the power divider; The third port of the power divider is connected to the first amplifier, and the first amplifier is connected to the up-converter; The third antenna is connected to a third radio frequency multi-function device, the third radio frequency multi-function 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-function device, which is connected to a first port of a combiner; the second antenna is connected to a second radio frequency multi-function device, which is connected to a 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 down converter; The third antenna is connected to a third radio frequency multi-function device, the third radio frequency multi-function 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, characterized in that The first antenna is connected to the first radio frequency multi-function device via a first filter, or the first antenna is a filtering antenna; The second antenna is connected to the second radio frequency multi-function device via a second filter, or the second antenna is a filter antenna; The third antenna is connected to the third radio frequency multi-function 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 distance between two adjacent antenna units in the plurality of antenna units satisfies the following relationship: Wherein, 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 to 11, characterized in that: The gain of the directional patterns 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; wherein the first antenna array is composed of the second antenna in each antenna unit of the multiple antenna units.

13. The antenna system according to claim 10, wherein: The excitation and amplitude of the first antenna and the second antenna are determined based on 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 unit of the multiple antenna units; 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 comprises the antenna system according to any one of claims 1 to 13.

Images