Antenna array, antenna system, base station and terminal

Abstract

An antenna array, an antenna system, a base station and a terminal, which relate to the technical field of antennas. The antenna array comprises a grounding plate, a transmitting antenna, a receiving antenna, at least two isolators and at least one cancellation structure, wherein the transmitting antenna, the at least two isolators and the receiving antenna are arranged in sequence at intervals on the same side of the grounding plate; the at least two isolators are spaced apart in a direction from the transmitting antenna to the receiving antenna; the at least one cancellation structure is located at at least one end of the at least two isolators in an extension direction; a single cancellation structure comprises at least two cancellation segments that are in contact only at their ends, with two ends of the at least two cancellation segments being respectively connected to two adjacent isolators; and transmission phases of the at least two cancellation segments can achieve cancellation, making it difficult for a coupled current on the grounding plate to bypass the ends of the isolators to reach the receiving antenna, thereby improving the isolation between the transmitting antenna and the receiving antenna.

Description

Antenna array, antenna system, base station and terminal

[0001] The present application claims priority from the Chinese patent application No. 202410878290.3 filed on June 28, 2024, and entitled "Antenna array, antenna system, base station and terminal", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of antennas, and in particular to an antenna array, an antenna system, a base station and a terminal. BACKGROUND

[0003] The integration and miniaturization requirements of the antenna system are increasingly high, so that the distance between the transmitting antenna and the receiving antenna in the antenna system is increasingly small, the mutual coupling between the transmitting antenna and the receiving antenna is enhanced, and it is necessary to improve the isolation between the transmitting antenna and the receiving antenna, thereby reducing the negative effects caused by signal coupling. In sub-band full-duplex communication, part of the sub-bands simultaneously perform signal transmission and reception, and since the frequencies of the transmitting signal and the receiving signal are the same, the transmitting signal and the receiving signal cannot be separated according to the difference in frequency.

[0004] Setting an isolation baffle between the transmitting antenna and the receiving antenna can achieve a good signal isolation effect. However, the signal transmitted by the transmitting antenna can be coupled with the ground plate to generate a current, and this current is easy to bypass the isolation baffle, so that the current travels on the surface of the ground plate to the receiving antenna, and the current generates a coupling signal at the receiving antenna again, which easily interferes with the normal reception of the signal by the receiving antenna, and reduces the isolation between the transmitting antenna and the receiving antenna. SUMMARY

[0005] The present application provides an antenna array, an antenna system, a base station and a terminal, by setting a cancellation structure at at least one end of at least two isolation pieces in the extension direction, the cancellation structure comprising at least two cancellation segments, so that the current reaching the end of the isolation piece can be cancelled at the cancellation structure, avoiding the current bypassing the isolation piece to reach the receiving antenna, which is conducive to improving the isolation between the transmitting antenna and the receiving antenna.

[0006] In a first aspect, the present application provides an antenna array, comprising: a ground plate, a transmitting antenna and a receiving antenna, the transmitting antenna and the receiving antenna being arranged at the same side of the ground plate; at least two isolation pieces connected with the ground plate, the at least two isolation pieces being located between the transmitting antenna and the receiving antenna, a direction from the transmitting antenna to the receiving antenna being a first direction, the extension directions of the at least two isolation pieces all intersecting with the first direction, the at least two isolation pieces being arranged at intervals in the first direction; and at least one cancellation structure located at at least one end of the at least two isolation pieces in the extension direction, the cancellation structure and the ground plate being arranged at intervals, a single cancellation structure comprising at least two cancellation segments which are only contacted at two ends, the two ends of the at least two cancellation segments being connected with adjacent two isolation pieces respectively, and the transmission phases of the at least two cancellation segments being capable of achieving cancellation.

[0007] The antenna array provided by the present application comprises a ground plate, a transmitting antenna, a receiving antenna and at least two isolation pieces, the transmitting antenna and the receiving antenna being arranged at the same side of the ground plate to achieve signal transmission of the transmitting antenna and signal reception of the receiving antenna. The at least two isolation pieces are arranged between the transmitting antenna and the receiving antenna, which is conducive to achieving signal isolation between the transmitting antenna and the receiving antenna by the at least two isolation pieces. Meanwhile, the extension directions of the at least two isolation pieces all intersect with the first direction, which ensures that the isolation pieces have sufficient area to shield signals in the first direction and reduces the occupied space of the at least two isolation pieces in the first direction, thereby providing space for the arrangement of the cancellation structure and being conducive to increasing the number of the arranged at least two isolation pieces and improving the isolation degree of the transmitting antenna and the receiving antenna.

[0008] The antenna array further comprises at least one cancellation structure, and the at least two isolation pieces are arranged at intervals in the first direction, so that the cancellation structure can be arranged in the interval region between adjacent two isolation pieces. The cancellation structure and the ground plate are arranged at intervals, which avoids short circuit caused by the contact between the cancellation structure and the ground plate and is conducive to ensuring the cancellation effect of the current at the cancellation structure. A single cancellation structure comprises at least two cancellation segments which are only contacted at two ends, the two ends of the at least two cancellation segments being connected with adjacent two isolation pieces respectively, so that the current is shunted at the cancellation structure, the shunted current generates a transmission phase difference after passing through different cancellation segments, and the cancellation is achieved when the current converges again, thereby realizing the blocking ability of the current by the cancellation structure. The at least one cancellation structure is located at at least one end of the at least two isolation pieces in the extension direction, so that the current at the end of the isolation piece is cancelled at the cancellation structure, which is conducive to improving the isolation degree of the transmitting antenna and the receiving antenna and avoiding the problem that the current bypasses the end of the isolation piece to reach the receiving antenna, thereby affecting the signal reception of the receiving antenna.

[0009] In a possible implementation, the product of the transmission phase difference between two adjacent cancellation segments in a single cancellation structure and the number of the cancellation segments is an odd multiple of 360°. By satisfying the above relationship between the transmission phase difference between two adjacent cancellation segments and the number of the cancellation segments in a single cancellation structure, the current can generate a transmission phase difference when passing through different cancellation segments and achieve cancellation when converging again, thereby achieving the blocking capability of the cancellation structure to the current.

[0010] In a possible implementation, a single cancellation structure includes n cancellation segments, the transmission phase difference between two adjacent cancellation segments is φ, and the cancellation structure satisfies the relationship: φ = 360° × a / n, where n is an integer and a is an odd number. By satisfying the above relationship, the transmission phase difference between two adjacent cancellation segments is reasonably configured, that is, the transmission lengths of two adjacent cancellation segments are reasonably configured, so that the current can be branched at the cancellation structure and generate a transmission phase difference after branching. The current generating the transmission phase difference can achieve cancellation when converging again, thereby achieving the blocking capability of the cancellation structure to the current.

[0011] In a possible implementation, a single cancellation structure includes at least three cancellation segments, and the at least three cancellation segments are not coplanar. By making the at least three cancellation segments of a single cancellation structure not coplanar, the flexibility of the position setting of the multiple cancellation segments in a single cancellation structure is increased, so that the cancellation structure can be applied to more application scenarios and requirements.

[0012] In a possible implementation, the at least two cancellation segments of a single cancellation structure are coplanar. By making the at least two cancellation segments of a single cancellation structure coplanar, the production and manufacturing of a single cancellation structure are simplified, the setting error of the at least two cancellation segments is small, the transmission phase difference between the at least two cancellation segments is more stable, and the blocking capability of a single cancellation structure to the current is ensured.

[0013] In a possible implementation, the at least two cancellation segments of a single cancellation structure are coplanar. By making the at least two cancellation segments of a single cancellation structure coplanar, the production and manufacturing of a single cancellation structure are simplified, the setting error of the at least two cancellation segments is small, the transmission phase difference between the at least two cancellation segments is more stable, and the blocking capability of a single cancellation structure to the current is ensured.

[0014] In a possible implementation, the cancellation section is curvedly extended, and the cancellation section comprises first sections and second sections connected alternately, the first sections extend in the first direction, and the second sections extend in a direction perpendicular to the first direction. By making the cancellation section comprise the first sections and the second sections connected alternately and perpendicular to each other, the cancellation section is folded in the first direction, which facilitates reducing the length of the cancellation section in the first direction and ensuring the total length of the cancellation section, and further ensures that the transmission phases of at least two cancellation sections in the cancellation structure can achieve cancellation; meanwhile, it is also beneficial to simplify the arrangement of the cancellation section, and makes the adjustment of the total length of the cancellation section more convenient.

[0015] In a possible implementation, in a plane perpendicular to the first direction, the projections of the at least two isolation members each cover the projection of the at least one cancellation structure. By making the projections of the at least two isolation members each cover the projection of the at least one cancellation structure in the plane perpendicular to the first direction, the cancellation structure is completely located between the adjacent two isolation members, the spacing space between the adjacent two isolation members is reasonably utilized, the part of the cancellation structure protruding from the isolation member is prevented from interfering with other structures, and the stability of the position and structure of the cancellation structure is improved.

[0016] In a possible implementation, there are two cancellation structures between the adjacent two isolation members, and the two cancellation structures are arranged at two ends of the adjacent two isolation members in the extending direction respectively. By making the two cancellation structures between the adjacent two isolation members, and the two cancellation structures being arranged at the two ends of the isolation members respectively, the interference of the two cancellation structures between the adjacent two isolation members after contact is avoided, the number of the arrangement of the cancellation structures is reduced, and it is ensured that the currents at the two ends of the at least two isolation members are cancelled, which facilitates saving the arrangement cost of the cancellation structure and ensuring the blocking ability of the cancellation structure to the current.

[0017] In a possible implementation, the number of the cancellation sections of the two cancellation structures between the adjacent two isolation members is the same. By making the number of the cancellation sections of the two cancellation structures between the adjacent two isolation members the same, the identity of the two cancellation structures between the adjacent two isolation members is improved, which facilitates simplifying the arrangement of the cancellation structure.

[0018] In a possible implementation, the number of the cancellation sections of the two cancellation structures between the adjacent two isolation members is two or three. By making the number of the cancellation sections of the two cancellation structures between the adjacent two isolation members two or three, it is beneficial to reduce the number of the cancellation sections of a single cancellation structure, simplify the arrangement of the cancellation structure, reduce the arrangement cost of the cancellation structure, and ensure the blocking ability of the cancellation structure to the current.

[0019] In a possible implementation, the length of the cancellation structure is the sum of the lengths of the cancellation sections in the cancellation structure, and the lengths of the two cancellation structures between the two adjacent isolation pieces are the same. By making the lengths of the two cancellation structures between the two adjacent isolation pieces the same, the time for the current to pass through the two cancellation structures is the same, further improving the consistency of the two cancellation structures between the two adjacent isolation pieces, and ensuring the blocking ability of the two cancellation structures between the two adjacent isolation pieces to the current.

[0020] In a possible implementation, a direction perpendicular to the first direction is a second direction, and the two cancellation structures between the two adjacent isolation pieces are symmetrically arranged in a plane perpendicular to the second direction. By making the two cancellation structures between the two adjacent isolation pieces symmetrically arranged in the plane perpendicular to the second direction, the positions and lengths of the cancellation sections of the cancellation structures can be correspondingly arranged according to the size of the current, and the consistency of the cancellation effect of the current at the two cancellation structures between the two adjacent isolation pieces is improved.

[0021] In a possible implementation, the number of the cancellation structures is at least two, and the number of the cancellation sections of the at least two cancellation structures is the same. By making the number of the cancellation sections of the at least two cancellation structures the same, the arrangement of the cancellation structures is facilitated, the consistency of all the cancellation structures in the entire antenna array is better, the blocking ability of all the cancellation structures in the antenna array to the current is ensured, and the isolation of the transmitting antenna and the receiving antenna is improved.

[0022] In a possible implementation, the single cancellation structure further includes two connection sections, the two connection sections are respectively connected with two ends of the at least two cancellation sections, and the two connection sections are respectively connected with the two adjacent isolation pieces. By making the single cancellation structure further include the two connection sections, and the two connection sections are respectively connected with the two adjacent isolation pieces and the two ends of the cancellation sections, the stability of the connection between the cancellation sections and the isolation pieces is improved, the stability of the phase difference transmission of the at least two cancellation sections is ensured, the blocking ability of the cancellation structure to the current is further ensured, and the isolation of the transmitting antenna and the receiving antenna is improved.

[0023] In a second aspect, the present application further provides an antenna system, including a feed network and the antenna array in any one of the embodiments of the first aspect, and the antenna array and the feed network are electrically connected. The beneficial effects of the present embodiment and the above embodiments are similar, and the present embodiment will not be described again.

[0024] In a third aspect, the present application further provides a base station, including the antenna system in the second aspect. The beneficial effects of the present embodiment and the above embodiments are similar, and the present embodiment will not be described again.

[0025] In a possible implementation, the base station further includes a baseband unit and a radio frequency unit, the radio frequency unit and the antenna system are integrated, the baseband unit is configured to modulate a baseband signal, the radio frequency unit is configured to convert the modulated baseband signal into a radio frequency signal, and the antenna system is configured to transmit the radio frequency signal. By further including the baseband unit and the radio frequency unit, and integrating the radio frequency unit and the antenna system, the antenna system can be applied to an active base station, which is conducive to reducing the transmission loss of signals between the radio frequency unit and the antenna system.

[0026] In a possible implementation, the base station further includes a baseband unit and a radio frequency remote unit, the baseband unit is configured to modulate a baseband signal, the radio frequency remote unit is configured to convert the modulated baseband signal into a radio frequency signal, and the antenna system is configured to transmit the radio frequency signal. By further including the baseband unit and the radio frequency remote unit, the antenna system can be applied to a passive base station, which is conducive to reducing the manufacturing cost of the base station.

[0027] In a fourth aspect, the present application also provides a terminal, including the antenna array in the first aspect and a signal processing unit, the signal processing unit is configured to process a signal, and the antenna array is configured to transmit the processed signal. The beneficial effects of the present embodiment are similar to those of the above-mentioned embodiments, and the present embodiment will not be described again. BRIEF DESCRIPTION OF DRAWINGS

[0028] FIG. 1 is a structural schematic diagram of an antenna array according to an embodiment of the present application;

[0029] FIG. 2 is a top view of the antenna array according to the embodiment shown in FIG. 1;

[0030] FIG. 3 is a structural schematic diagram of an antenna array with three cancellation sections according to an embodiment of the present application;

[0031] FIG. 4 is a top view of the antenna array according to the embodiment shown in FIG. 3;

[0032] FIG. 5 is a structural schematic diagram of an antenna array with three non-coplanar cancellation sections according to an embodiment of the present application;

[0033] FIG. 6 is a structural schematic diagram of an antenna array with parallel cancellation structures at both ends of an isolation member according to an embodiment of the present application;

[0034] FIG. 7 is an elevation view of the antenna array according to the embodiment shown in FIG. 6;

[0035] FIG. 8 is an elevation view of the antenna array according to the embodiment shown in FIG. 1;

[0036] FIG. 9 is a sectional view of the embodiment shown in FIG. 8 at A-A;

[0037] Fig. 10 is a schematic diagram of an antenna array with one cancellation structure according to an embodiment of the present application;

[0038] Fig. 11 is a schematic diagram of an antenna array with multiple cancellation structures at one end of two adjacent isolation members according to an embodiment of the present application;

[0039] Fig. 12 is a schematic diagram of an antenna array with cancellation structures close to a side of a transmitting antenna according to an embodiment of the present application;

[0040] Fig. 13 is a schematic diagram of an antenna array with cancellation structures in an intermediate region of at least two isolation members according to an embodiment of the present application;

[0041] Fig. 14 is a top view of an antenna array with different numbers of cancellation segments of cancellation structures between two adjacent isolation members according to an embodiment of the present application;

[0042] Fig. 15 is a top view of an antenna array with the same number of cancellation segments of cancellation structures between two adjacent isolation members according to an embodiment of the present application;

[0043] Fig. 16 is a top view of an antenna array with symmetrically arranged cancellation structures between two adjacent isolation members according to an embodiment of the present application;

[0044] Fig. 17 is a top view of an antenna array with asymmetrically arranged cancellation structures between two adjacent isolation members according to an embodiment of the present application;

[0045] Fig. 18 is a schematic diagram of an antenna system according to an embodiment of the present application;

[0046] Fig. 19 is a schematic diagram of an active base station according to an embodiment of the present application;

[0047] Fig. 20 is a schematic diagram of a passive base station according to an embodiment of the present application;

[0048] Fig. 21 is a schematic diagram of a terminal according to an embodiment of the present application. DETAILED DESCRIPTION

[0049] The embodiments of the present application will be described below with reference to the accompanying drawings.

[0050] For the convenience of understanding, the English abbreviations and related technical terms involved in the embodiments of the present application will be explained and described below.

[0051] It should be clear that the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0052] The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the application and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0053] It should be understood that the term "and / or" as used herein merely describes associated objects in a same field, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " herein generally means that the front and rear associated objects are in an "or" relationship.

[0054] Depending on the context, the word "if" as used herein can be interpreted to mean "when" or "while" or "in response to determining" or "in response to detecting." Similarly, the phrase "if it is determined" or "if [a stated condition or event] is detected" can be interpreted to mean "upon determining" or "in response to determining" or "upon detecting [the stated condition or event]" or "in response to detecting [the stated condition or event]."

[0055] It should be understood that "first", "second", etc. used in the present application are only for the purpose of distinguishing description, and cannot be understood as indicating or implying relative importance, nor can it be understood as indicating or implying sequence.

[0056] In the description of the present application, the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0057] In the description of the present application, it should be noted that due to manufacturing or assembly errors, there may be a slight angle deviation within 15 degrees under the design that should be perpendicular or parallel, which is also considered to be perpendicular or parallel in the present embodiment.

[0058] As used herein, "in the range of" includes both end values of the range by default, unless it is indicated separately that the end values are not included, for example, in the range of 1 to 5, both 1 and 5 are included.

[0059] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or abutment connection or integral connection; for those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0060] It should be understood that in the present application, "electrical connection" can be understood as physical contact and electrical conduction of components; it can also be understood as a form of connection between different components through a signal-transmissible entity line such as copper foil or wire in printed circuit board (PCB) circuit construction. "Connection" and "connection" can refer to a mechanical connection relationship or a physical connection relationship, for example, A and B are connected or A and B are connected, which means that there is a fastening component (such as a screw, a bolt, a rivet, etc.) between A and B, or A and B are in contact with each other and A and B are difficult to separate.

[0061] With the increasing requirements for the integration and miniaturization of antenna systems, the distance between the transmitting antenna and the receiving antenna in the antenna system is becoming smaller and smaller, the mutual coupling between the transmitting antenna and the receiving antenna is enhanced, and it is necessary to improve the isolation between the transmitting antenna and the receiving antenna, thereby reducing the negative effects caused by signal coupling.

[0062] Part of the sub-band full-duplex communication simultaneously transmits and receives signals, and since the frequencies of the transmitting signal and the receiving signal are the same, the transmitting signal and the receiving signal cannot be separated according to the difference in frequency, that is, the traditional radio frequency filtering method cannot be used. An isolation baffle is arranged between the transmitting antenna and the receiving antenna, and the isolation baffle can shield signals and improve the isolation of the transmitting antenna and the receiving antenna to a certain extent.

[0063] However, the signal transmitted by the transmitting antenna can be coupled with the ground plate and generate a current on the surface of the ground plate. The current travels from the transmitting antenna side to the receiving antenna side through the surface of the ground plate, and can again couple at the receiving antenna to generate a coupling signal. The coupling signal easily interferes with the normal reception of the signal by the receiving antenna, and reduces the isolation between the transmitting antenna and the receiving antenna. Although the isolation baffle can block the current to a certain extent, part of the current will bypass the isolation baffle and converge at the edge, so that the isolation baffle converges the current at both ends in the extension direction. The current bypasses the two ends of the isolation baffle and finally reaches the receiving antenna. If the number of isolation baffles is increased, the current converges at both ends of a single isolation baffle, and the current at the end is easy to bypass the baffle and couple to the adjacent baffle, so that the current can still bypass a plurality of isolation baffles in turn and finally reach the receiving antenna to affect the signal reception of the receiving antenna.

[0064] The application provides an antenna array 100, please refer to FIG. 1 and FIG. 2, FIG. 1 shows the structural schematic diagram of the antenna array 100 provided by the embodiment of the application, and FIG. 2 shows the top view of the antenna array 100 provided by the embodiment shown in FIG. 1. The antenna array 100 comprises a grounding plate 10, a transmitting antenna 20 and a receiving antenna 30, the transmitting antenna 20 and the receiving antenna 30 are connected with the surface of the grounding plate 10, and the materials of the transmitting antenna 20, the receiving antenna 30 and the grounding plate 10 comprise at least one of glass fiber and metal. The materials of the transmitting antenna 20, the receiving antenna 30 and the grounding plate 10 can be completely the same, or the materials of the transmitting antenna 20, the receiving antenna 30 and the grounding plate 10 can not be completely the same. The grounding plate 10 can be made of glass fiber or high polymer material as a substrate, and a metal plating layer is coated on the surface. Exemplarily, the transmitting antenna 20, the receiving antenna 30 and the grounding plate 10 are in an integrated structure.

[0065] The transmitting antenna 20 is used for transmitting signals, and the receiving antenna 30 is used for receiving signals. The signal frequency transmitted by the transmitting antenna 20 and the signal frequency received by the receiving antenna 30 can be the same, or the signal frequency transmitted by the transmitting antenna 20 and the signal frequency received by the receiving antenna 30 can be different. The grounding plate 10 is used for reflecting and converging signals on the receiving point of the receiving antenna 30, so as to improve the sensitivity of the receiving antenna 30 to signal reception. The transmitting antenna 20 and the receiving antenna 30 are arranged at the same side of the grounding plate 10, so as to make full use of the space at one side of the grounding plate 10. The grounding plate 10 can block and shield other signals from the other side which is not provided with the transmitting antenna 20 and the receiving antenna 30, so as to avoid the influence of other signals on the transmitting antenna 20 and the receiving antenna 30, and improve the signal transmission effect of the transmitting antenna 20 and the signal reception effect of the receiving antenna 30.

[0066] The number of the transmitting antenna 20 can be at least two, and the at least two transmitting antennas 20 are arranged in an array, so as to improve the signal transmission strength of the transmitting antenna 20. The number of the receiving antenna 30 can be at least two, and the at least two receiving antennas 30 are arranged in an array, so as to improve the signal reception capability of the receiving antenna 30. The array-arranged transmitting antenna 20 and the array-arranged receiving antenna 30 are arranged at intervals, so as to avoid the influence of the signal transmitted by the transmitting antenna 20 on the signal reception of the receiving antenna 30 to a certain extent.

[0067] The antenna array 100 further comprises at least two isolation pieces 40. The materials of the isolation pieces 40 comprise at least one of metal and wave-absorbing material. The wave-absorbing material comprises but is not limited to high polymer material and sponge material doped with carbon powder, so that the isolation pieces 40 have shielding capability for electromagnetic waves. The isolation pieces 40 can be used to improve the isolation degree between the transmitting antenna 20 and the receiving antenna 30.

[0068] Referring to FIG. 2, the at least two isolation pieces 40, the transmitting antenna 20 and the receiving antenna 30 are located on the same side of the ground plate 10, the direction from the transmitting antenna 20 to the receiving antenna 30 is the first direction (such as the X direction in FIGS. 1 and 2), and the transmitting antenna 20, the at least two isolation pieces 40 and the receiving antenna 30 are sequentially arranged in the first direction, so that the at least two isolation pieces 40 are located between the transmitting antenna 20 and the receiving antenna 30. When the transmitting antenna 20 transmits a signal, an electromagnetic wave with a certain intensity in the first direction is generated, the isolation piece 40 has a shielding capability for the electromagnetic wave, and the at least two isolation pieces 40 are arranged between the transmitting antenna 20 and the receiving antenna 30, so that the at least two isolation pieces 40 can shield part of the electromagnetic wave in the first direction, thereby reducing the influence of the signal transmitted by the transmitting antenna 20 on the signal reception of the receiving antenna 30, and improving the isolation degree of the signal between the transmitting antenna 20 and the receiving antenna 30.

[0069] The extension direction of the at least two isolation pieces 40 intersects the first direction, that is, the extension direction of the at least two isolation pieces 40 has an included angle with the first direction, so that each isolation piece 40 has a sufficient area to shield the electromagnetic wave in the first direction, which is beneficial to ensure the isolation capability of the at least two isolation pieces 40 for the signal between the transmitting antenna 20 and the receiving antenna 30. At the same time, the isolation piece 40 occupies a relatively small space in the first direction, which is beneficial to arrange more isolation pieces 40 in the interval region between the transmitting antenna 20 and the receiving antenna 30, and provides space for the subsequent arrangement of the cancellation structure 50, and further improves the isolation capability of the at least two isolation pieces 40 for the signal between the transmitting antenna 20 and the receiving antenna 30. Conversely, when the extension direction of the isolation piece 40 is parallel to the first direction, the projection area of the first isolation piece 40 in the plane perpendicular to the first direction is small, so that the shielding area of the isolation piece 40 for the electromagnetic wave in the first direction is small, and the isolation piece 40 occupies a large space in the first direction, which are both not conducive to improving the isolation degree between the transmitting antenna 20 and the receiving antenna 30.

[0070] When the transmitting antenna 20 transmits a signal, the signal is easy to couple with the ground plate 10 to generate a current, and the current can travel along the first direction from the side of the transmitting antenna 20 to the side of the receiving antenna 30 on the surface of the ground plate 10. The isolation piece 40 has a certain blocking capability for the current, so that the current converges at the two ends of the extension direction of the isolation piece 40 when encountering the isolation piece 40, bypasses the isolation piece 40 at the two ends of the isolation piece 40, and finally travels to the receiving antenna 30, and a coupling signal is generated at the receiving antenna 30 again. The coupling signal will interfere with the signal reception of the receiving antenna 30, so that the signal reception effect of the receiving antenna 30 becomes poor.

[0071] Referring to FIG. 1, the antenna array 100 further comprises at least one cancellation structure 50, the at least one cancellation structure 50 being located at at least one end of the at least two isolation pieces 40 in the extending direction, so that at least one end of the isolation piece 40 has the cancellation structure 50, the cancellation structure 50 can make the current at the end of the isolation piece 40 be cancelled, avoiding the current bypassing the end of the isolation piece 40 to reach the receiving antenna 30, which is conducive to improving the isolation of the transmitting antenna 20 and the receiving antenna 30.

[0072] Referring to FIG. 2, the at least two isolation pieces 40 are arranged at intervals in the first direction, providing a space for the arrangement of the cancellation structure 50, so that the cancellation structure 50 can be located between at least one pair of adjacent isolation pieces 40, and the two ends of the cancellation structure 50 are connected with the adjacent two isolation pieces 40 respectively, to realize the sequential transmission of the current in one of the isolation piece 40, the cancellation structure 50 and the other isolation piece 40. At the same time, the distribution of the at least two isolation pieces 40 between the transmitting antenna 20 and the receiving antenna 30 is more uniform, and compared with the arrangement of the at least two isolation pieces 40 being attached, the distribution range of the at least two isolation pieces 40 in the first direction is increased when the at least two isolation pieces 40 are arranged at intervals, so that the at least two isolation pieces 40 realize shielding of the signal at multiple interval positions in the first direction, which is conducive to improving the isolation ability of the at least two isolation pieces 40 to the signal between the transmitting antenna 20 and the receiving antenna 30.

[0073] The single cancellation structure 50 comprises at least two cancellation segments 51 which are only contacted at two ends, the two ends of the at least two cancellation segments 51 being connected with the adjacent two isolation pieces 40 respectively, so that the two ends of the cancellation structure 50 are connected with the adjacent two isolation pieces 40 respectively. The at least two isolation pieces 40 are arranged at intervals in the first direction, so that the two ends of the at least two cancellation segments 51 are spaced in the first direction, and one of the two ends of the at least two cancellation segments 51 is close to the transmitting antenna 20, and the other of the two ends of the at least two cancellation segments 51 is close to the receiving antenna 30.

[0074] The material of the cancellation structure 50 is a conductive metal, and at least one cancellation structure 50 is located at at least one end of the isolation member 40 in the extension direction, so that the current at the end of the isolation member 40 can pass through the cancellation structure 50. The cancellation structure 50 is spaced apart from the ground plate 10 to avoid the contact between the cancellation structure 50 and the ground plate 10, which causes the two ends of the cancellation structure 50 to be connected and short-circuit, thereby affecting the cancellation effect of the current at the cancellation structure 50. When the current passes through the cancellation structure 50, the current flows from one end of the cancellation structure 50 to the other end of the cancellation structure 50, that is, the current flows from one end of the at least two cancellation segments 51 to the other end of the at least two cancellation segments 51. Since the at least two cancellation segments 51 are only connected at the ends, the current is shunted as the at least two cancellation segments 51 are separated in structure. Each cancellation segment 51 is shunted by the current, and the shunted current converges again when reaching the other end of the at least two cancellation segments 51. The transmission phases of the at least two cancellation segments 51 can achieve cancellation, so that the transmission phases of the currents passing through different cancellation segments 51 can achieve cancellation, thereby achieving the cancellation of the current.

[0075] The number of cancellation segments 51 of a single cancellation structure 50 is at least two, so that the current passing through the single cancellation structure 50 can be shunted, and the shunted current can generate a transmission phase difference after passing through different cancellation segments 51. The shunted current that generates a transmission phase difference converges again to achieve cancellation. The at least two cancellation segments 51 of a single cancellation structure 50 are only in contact at the two ends, so that the two ends of the at least two cancellation segments 51 are in contact and the middle regions are spaced apart from each other, which is beneficial to ensure the cancellation effect of the current at the cancellation structure 50, thereby ensuring the isolation between the transmitting antenna 20 and the receiving antenna 30. Avoiding the contact between the middle regions of the at least two cancellation segments 51 causes the shunted current to converge prematurely, which leads to poor cancellation effect of the current at the cancellation structure 50.

[0076] In the sub-band full duplex communication system, the transmitting frequency band of the transmitting antenna 20 includes a frequency band capable of simultaneously transmitting and receiving signals. When the transmitting antenna 20 and the receiving antenna 30 simultaneously transmit and receive signals in the same frequency band, the transmitting signal of the transmitting antenna 20 has a greater impact on the signal reception of the receiving antenna 30 due to the proximity of the signal frequencies and the simultaneous transmission and reception of signals. In order to achieve better signal reception effect, the isolation between the transmitting antenna 20 and the receiving antenna 30 is required to be higher. At least two isolation pieces 40 are arranged between the transmitting antenna 20 and the receiving antenna 30, which is conducive to improving the isolation between the transmitting antenna 20 and the receiving antenna 30. At the same time, at least one cancellation structure 50 is arranged at at least one end of the extension direction of the at least two isolation pieces 40, so that the current is cancelled at the cancellation structure 50, avoiding the current bypassing the at least two isolation pieces 40 to reach the receiving antenna 30, reducing the influence of the current coupled by the ground plate 10 on the signal reception of the receiving antenna 30, and further improving the isolation between the transmitting antenna 20 and the receiving antenna 30.

[0077] The application provides an antenna array 100, which includes a ground plate 10, a transmitting antenna 20, a receiving antenna 30 and at least two isolation pieces 40. The transmitting antenna 20 and the receiving antenna 30 are arranged on the same side of the ground plate 10 to realize the signal transmission of the transmitting antenna 20 and the signal reception of the receiving antenna 30. The at least two isolation pieces 40 are arranged between the transmitting antenna 20 and the receiving antenna 30, and the at least two isolation pieces 40 can shield signals, so that the at least two isolation pieces 40 can realize the signal isolation between the transmitting antenna 20 and the receiving antenna 30. At the same time, the at least two isolation pieces 40 are located between the transmitting antenna 20 and the receiving antenna 30 in position, which is conducive to the at least two isolation pieces 40 realizing the shielding of signals between the transmitting antenna 20 and the receiving antenna 30, and ensuring the improvement of the isolation between the transmitting antenna 20 and the receiving antenna 30 by the at least two isolation pieces 40. At the same time, the extension directions of the at least two isolation pieces 40 all intersect the first direction, which ensures that the isolation piece 40 has enough area to shield the signals in the first direction, reduces the occupied space of the at least two isolation pieces 40 in the first direction, provides space for the arrangement of the cancellation structure 50, and is also conducive to increasing the number of the at least two isolation pieces 40 and improving the isolation of the transmitting antenna 20 and the receiving antenna 30.

[0078] The antenna array 100 further comprises at least one cancellation structure 50, and the at least two isolation pieces 40 are spaced apart in the first direction to provide a space for the arrangement of the cancellation structure 50, so that the cancellation structure 50 can be arranged in the spacing region between the adjacent two isolation pieces 40. Meanwhile, the at least one cancellation structure 50 is spaced apart from the ground plate 10 to avoid short circuit caused by the contact between the cancellation structure 50 and the ground plate 10, and to facilitate the guarantee of the cancellation effect of the current at the cancellation structure 50, and further guarantee the improvement effect of the isolation degree of the cancellation structure 50 to the transmitting antenna 20 and the receiving antenna 30. The single cancellation structure 50 comprises at least two cancellation segments 51 which are only contacted at two ends, and the two ends of the at least two cancellation segments 51 are connected with the adjacent two isolation pieces 40 respectively, so that the current is shunted at the cancellation structure 50, the shunted current generates a transmission phase difference after passing through different cancellation segments 51 respectively, and the cancellation is realized when the current converges again, and further the blocking ability of the cancellation structure 50 to the current is realized. The at least one cancellation structure 50 is located at at least one end of the at least two isolation pieces 40 in the extension direction, so that the current at the end of the isolation piece 40 is cancelled at the cancellation structure 50, and the problem that the current bypasses the end of the isolation piece 40 to reach the receiving antenna 30 and causes the influence of the current to the signal reception of the receiving antenna 30 is avoided, and the isolation degree of the transmitting antenna 20 and the receiving antenna 30 is facilitated to be improved.

[0079] In a possible implementation, referring to FIG. 1 and FIG. 3, FIG. 3 shows a structural schematic diagram of the antenna array 100 provided by the embodiment of the application, which has three cancellation segments 51. The single cancellation structure 50 comprises at least two cancellation segments 51 which are only contacted at two ends, and the transmission phase difference between the adjacent two cancellation segments 51 in the single cancellation structure 50 is a 360° odd multiple of the number of the cancellation segments 51, so that the transmission phase difference can be generated when the current transmits in the single cancellation structure 50 and passes through different cancellation segments 51, and the cancellation is realized when the current converges again, and further the blocking ability of the cancellation structure 50 to the current is realized.

[0080] Taking the number of the cancellation segments 51 of the single cancellation structure 50 as n, the transmission phase difference between the adjacent two cancellation segments 51 as φ, and the cancellation structure 50 satisfying the relationship: φ = 360° × a / n. Wherein, n is a positive integer greater than or equal to 2, so that the single cancellation structure 50 comprises at least two cancellation segments 51 to guarantee that the current is shunted at the cancellation structure 50; a is an odd number, so that the transmission phase difference between the adjacent two cancellation segments 51 in the single cancellation structure 50 is a 360° odd multiple of the number of the cancellation segments 51, and the blocking ability of the cancellation structure 50 to the current can be guaranteed when the transmission phase difference between the adjacent two cancellation segments 51 is small or large.

[0081] By satisfying the above relationship by the cancellation structure 50, the transmission phase difference of the two adjacent cancellation segments 51 is properly configured, i.e. the transmission length of the two adjacent cancellation segments 51 is properly configured, which ensures that the current can be split at the cancellation structure 50, and a transmission phase difference is generated after the splitting, and the current with the transmission phase difference can be cancelled when re-converging, thereby realizing the blocking ability of the cancellation structure 50 to the current.

[0082] In the embodiments shown in FIG. 1 and FIG. 2, the single cancellation structure 50 includes two two-terminal contact cancellation segments 51, and in the embodiments shown in FIG. 3 and FIG. 4, the single cancellation structure 50 includes three two-terminal contact cancellation segments 51. The number of the cancellation segments 51 and the transmission phase difference in the single cancellation structure 50 will be described in detail below in combination with the specific embodiments of FIG. 1 to FIG. 4.

[0083] In an embodiment, referring to FIG. 1 and FIG. 2, the single cancellation structure 50 includes two two-terminal contact cancellation segments 51, the cancellation segment 51 close to the ground plate 10 on one side of the single cancellation structure 50 is a first cancellation segment 511, and the cancellation segment 51 away from the ground plate 10 on the other side of the single cancellation structure 50 is a second cancellation segment 512. The transmission lengths of the first cancellation segment 511 and the second cancellation segment 512 are different. When the current passes through the cancellation structure 50 from the transmitting antenna 20 to the receiving antenna 30, the current is split at the end of the cancellation structure 50 close to the transmitting antenna 20, and the split current passes through the first cancellation segment 511 and the second cancellation segment 512 respectively and generates a transmission phase difference, and the split current re-converges at the end of the cancellation structure 50 close to the receiving antenna 30 and realizes cancellation. Exemplarily, the transmission phase difference of the first cancellation segment 511 and the second cancellation segment 512 is 180°.

[0084] In one embodiment, referring to FIG. 3 and FIG. 4, FIG. 4 shows a top view of the antenna array 100 provided by the embodiment shown in FIG. 3. The single cancellation structure 50 includes three cancellation segments 51 which are only contacted at two ends, and the three cancellation segments 51 are respectively a first cancellation segment 511, a second cancellation segment 512 and a third cancellation segment 513, which are arranged in sequence, the first cancellation segment 511 is located at the side of the second cancellation segment 512 close to the ground plate 10, the third cancellation segment 513 is located at the side of the second cancellation segment 512 away from the ground plate 10, and the transmission lengths of the first cancellation segment 511, the second cancellation segment 512 and the third cancellation segment 513 are all different. When the current passes through the cancellation structure 50 from the transmitting antenna 20 to the receiving antenna 30, the current is split at one end of the cancellation structure 50 close to the transmitting antenna 20, the split current passes through the first cancellation segment 511, the second cancellation segment 512 and the third cancellation segment 513 respectively and generates a transmission phase difference, and the split current converges again at one end of the cancellation structure 50 close to the receiving antenna 30 and realizes cancellation. Exemplarily, the transmission phase difference between the first cancellation segment 511 and the second cancellation segment 512 is 120°, and the transmission phase difference between the second cancellation segment 512 and the third cancellation segment 513 is 120°.

[0085] In one possible embodiment, referring to FIG. 3 and FIG. 5, FIG. 5 shows a structure diagram of the antenna array 100 provided by the embodiment of the present application, which has three cancellation segments 51 which are not coplanar. When the single cancellation structure 50 has two cancellation segments 51, the two cancellation segments 51 in the single cancellation structure 50 are located in the same plane; when the single cancellation structure 50 has three or more cancellation segments 51, at least three cancellation segments 51 in the single cancellation structure 50 can be located in the same plane or not, as long as the transmission phase difference of the at least three cancellation segments 51 can realize cancellation.

[0086] When at least two cancellation segments 51 in the single cancellation structure 50 are coplanar, it is beneficial to simplify the production and manufacturing of the single cancellation structure 50, the setting error of the at least two cancellation segments 51 is small, the transmission phase difference of the at least two cancellation segments 51 is more stable, and the blocking ability of the single cancellation structure 50 to the current is guaranteed. When at least three cancellation segments 51 in the single cancellation structure 50 are not coplanar, the relative positional relationship of the at least three cancellation segments 51 can be set according to actual needs, which increases the flexibility of the position setting of the cancellation segments 51, so that the cancellation structure 50 can be applied to more application scenarios and needs.

[0087] The embodiment shown in FIG. 5 has both the cancellation structure 50 in which at least two cancellation segments 51 are coplanar and the cancellation structure 50 in which at least two cancellation segments 51 are not coplanar, and the coplanar condition of at least two cancellation segments 51 in the single cancellation structure 50 will be described in detail below in combination with the specific embodiment of FIG. 5.

[0088] In an embodiment, referring to FIG. 5, the two ends of the at least two isolation members 40 in the extending direction are respectively provided with the cancellation structure 50, one end of the cancellation structure 50 has three non-coplanar cancellation segments 51, and the other end of the cancellation structure 50 has three coplanar cancellation segments 51. The three coplanar cancellation segments 51 are respectively a first cancellation segment 511, a second cancellation segment 512, and a third cancellation segment 513, which are sequentially arranged in the same plane, so that the first cancellation segment 511 and the second cancellation segment 512 are adjacent, and the second cancellation segment 512 and the third cancellation segment 513 are adjacent. The three non-coplanar cancellation segments 51 are respectively a fourth cancellation segment 514, a fifth cancellation segment 515, and a sixth cancellation segment 516, which are sequentially arranged in a clockwise / anticlockwise direction, so that the fourth cancellation segment 514 and the fifth cancellation segment 515 are adjacent, and the fifth cancellation segment 515 and the sixth cancellation segment 516 are adjacent. Therefore, when the at least three cancellation segments 51 in the single cancellation structure 50 are non-coplanar, the at least three cancellation segments 51 are sequentially arranged in the clockwise / anticlockwise direction, and adjacent two cancellation segments 51 are two cancellation segments 51 adjacent in the clockwise / anticlockwise direction, and the adjacent two cancellation segments 51 in the single cancellation structure 50 satisfy that the product of the transmission phase difference and the number of the cancellation segments 51 is an odd multiple of 360°.

[0089] When the at least two cancellation segments 51 in the single cancellation structure 50 are coplanar, all the cancellation structures 50 can be coplanar, or all the cancellation structures 50 can not be completely coplanar. The coplanar conditions of the cancellation structures 50 in the antenna array 100 will be described in detail below in combination with specific embodiments of FIGS. 6-9.

[0090] Referring to FIGS. 1 and 6, FIG. 6 shows a schematic diagram of the parallel structures of the cancellation structures 50 at the two ends of the isolation member 40 in the antenna array 100 provided by the embodiments of the present application. When the at least two cancellation segments 51 in the single cancellation structure 50 are coplanar, different cancellation structures 50 can be coplanar, or different cancellation structures 50 can not be coplanar. That is, the cancellation structures 50 at the same end of the at least two isolation members 40 in the extending direction can be in the same plane, or the cancellation structures 50 at the same end of the at least two isolation members 40 in the extending direction can not be coplanar; the cancellation structures 50 at the two ends of the at least two isolation members 40 in the extending direction can be in the same plane, or the cancellation structures 50 at the two ends of the at least two isolation members 40 in the extending direction can not be coplanar. The relative position relationship of the at least one cancellation structure 50 can be set according to actual requirements, which increases the flexibility of the position setting of the cancellation structure 50, so that the cancellation structure 50 can be applied to more application scenarios and requirements.

[0091] In one embodiment, referring to FIG. 6 and FIG. 7, FIG. 7 shows a front view of the antenna array 100 provided by the embodiment shown in FIG. 6. At least two cancellation segments 51 of a single cancellation structure 50 are coplanar, and at least two isolation pieces 40 are provided with the cancellation structure 50 at both ends in the extending direction, and the cancellation structures 50 at both ends of the at least two isolation pieces 40 in the extending direction are not coplanar. The cancellation structure 50 at one end of the at least two isolation pieces 40 in the extending direction is coplanar with the ground plate 10, and the cancellation structure 50 at the other end of the at least two isolation pieces 40 in the extending direction is parallel to the ground plate 10, so that the cancellation structures 50 at both ends of the isolation piece 40 are arranged in parallel.

[0092] The direction perpendicular to the first direction (such as the X direction in FIG. 6 and FIG. 7) is the second direction (such as the Y direction in FIG. 6), and the at least two isolation pieces 40 extend along the second direction. The direction perpendicular to the ground plate 10 is the third direction (such as the Z direction in FIG. 6 and FIG. 7), and the third direction is perpendicular to the first direction and the second direction. The cancellation structure 50 parallel to the ground plate 10 utilizes the spacing space between the adjacent two isolation pieces 40, so that it is arranged in the third direction and spaced apart from the ground plate 10. It does not need to reserve space for the cancellation structure 50 in the second direction, and makes the cancellation structure 50 spaced apart from the ground plate 10 in the second direction, which is beneficial to reduce the length of the antenna array 100 in the second direction, realize the miniaturization of the antenna array 100, and further simplify the arrangement of the antenna array 100.

[0093] In one embodiment, referring to FIG. 1, FIG. 8 and FIG. 9, FIG. 8 shows a front view of the antenna array 100 provided by the embodiment shown in FIG. 1, and FIG. 9 shows a sectional view of the embodiment shown in FIG. 8 at A-A. At least two cancellation segments 51 of a single cancellation structure 50 are coplanar, and all the cancellation segments 51 are coplanar with the ground plate 10, so that all the cancellation structures 50 are coplanar, and all the cancellation structures 50 are coplanar with the ground plate 10. The signal emitted by the transmitting antenna 20 is coupled with the ground plate 10 to generate a current, so that the current travels on the surface of the ground plate 10, and the cancellation structure 50 is coplanar with the ground plate 10, which is beneficial to the current on the surface of the ground plate 10 to travel to the cancellation structure 50 and achieve cancellation through the cancellation structure 50, improve the cancellation effect of the current at the cancellation structure 50, and further improve the isolation between the transmitting antenna 20 and the receiving antenna 30. At the same time, all the cancellation structures 50 are coplanar, which also makes the cancellation of the current at the cancellation structure 50 have better uniformity, which is beneficial to ensure that the cancellation structures 50 at different positions have good blocking ability to the current.

[0094] In a possible implementation, referring to FIG. 1 and FIG. 8, the antenna array 100 includes at least two isolation pieces 40 and at least three ground plates 10, the at least two isolation pieces 40 are arranged at intervals in a first direction (for example, the X direction in FIG. 1 and FIG. 8), and the at least two isolation pieces 40 and the at least three ground plates 10 are arranged alternately, so that two ground plates 10 are located on both sides of the at least two isolation pieces 40 in the first direction respectively, the two ground plates 10 located on both sides of the at least two isolation pieces 40 in the first direction are connected with the transmitting antenna 20 and the receiving antenna 30 respectively, and the remaining ground plates 10 are located between the at least two isolation pieces 40, and there is one ground plate 10 between any two adjacent isolation pieces 40. The at least three ground plates 10 are coplanar, the orthographic projection of the at least two isolation pieces 40 covers the orthographic projection of the at least three ground plates 10 in a plane perpendicular to the first direction, so that the ground plates 10 located between the at least two isolation pieces 40 do not protrude from the isolation pieces 40, the interval space between any two adjacent isolation pieces 40 is utilized reasonably, and the occupied space of the antenna array 100 is reduced.

[0095] Referring to FIG. 1, FIG. 8 and FIG. 9, the cancellation structure 50 and the ground plate 10 are coplanar, and because the orthographic projection of the at least two isolation pieces 40 covers the orthographic projection of the at least three ground plates 10 in a plane perpendicular to the first direction, the orthographic projection of the at least two isolation pieces 40 covers the orthographic projection of the at least one cancellation structure 50 in a plane perpendicular to the first direction, and the cancellation structure 50 and the ground plate 10 are both located completely between any two adjacent isolation pieces 40, so that the cancellation structure 50 is close to the ground plate 10 in position, the current can reach the cancellation structure 50 and be cancelled at the cancellation structure 50, meanwhile, the interval space between any two adjacent isolation pieces 40 is utilized reasonably, the occupied space of the antenna array 100 is reduced, the part of the cancellation structure 50 protruding from the isolation piece 40 is avoided from interfering with other structures, the stability of the cancellation structure 50 is improved, and the stability of the current cancellation ability of the cancellation structure 50 is improved.

[0096] Referring to FIGS. 6 and 7, the cancellation structure 50 can also be spaced apart from the ground plate 10 in a third direction (for example, the Z direction in FIGS. 6 and 7), and in a plane perpendicular to the first direction (for example, the X direction in FIGS. 6 and 7), the orthographic projection of at least two isolation pieces 40 can cover the orthographic projection of at least one cancellation structure 50, or the orthographic projection of at least two isolation pieces 40 can partially cover the orthographic projection of at least one cancellation structure 50, that is, the cancellation structure 50 can be completely located between two adjacent isolation pieces 40, or the cancellation structure 50 can be partially located between two adjacent isolation pieces 40. When the cancellation structure 50 is completely located between two adjacent isolation pieces 40, the space between the two adjacent isolation pieces 40 is reasonably utilized, avoiding interference between the part of the cancellation structure 50 protruding from the isolation piece 40 and other structures, which is beneficial to improve the stability of the position and structure of the cancellation structure 50. When the cancellation structure 50 is partially located between two adjacent isolation pieces 40, the size of the cancellation structure 50 is no longer limited by the size of the isolation piece 40, making the setting of the cancellation structure 50 more flexible. The shape and size of the cancellation structure 50 can be set according to actual needs, so that the cancellation structure 50 can be applied to more application scenarios and needs.

[0097] In a possible implementation, referring to FIGS. 2 and 4, the cancellation segment 51 is curved and extends in the first direction (for example, the X direction in FIGS. 2 and 4), which is beneficial to reduce the length of the cancellation segment 51 in the first direction, so that the cancellation segment 51 can be smoothly set between two adjacent isolation pieces 40. At the same time, folding the cancellation segment 51 in the first direction is also beneficial to ensure the total length of the cancellation segment 51, and further ensure that the transmission phases of at least two cancellation segments 51 in the cancellation structure 50 can achieve cancellation.

[0098] The cancellation segment 51 can be curved and extend in the first direction as a whole in a wavy arc shape, or the cancellation segment 51 can include a plurality of straight segments connected end to end and curved and extend in the first direction. The folding mode of the cancellation segment 51 in the first direction can be set according to actual needs to be suitable for different application scenarios and needs.

[0099] In an embodiment, referring to FIG. 2, the cancellation segment 51 includes first segments 517 and second segments 518 connected alternately, the first segments 517 extend in the first direction, and the second segments 518 extend in the second direction (e.g., the Y direction in FIG. 2), so that the second segments 518 are perpendicular to the first segments 517. The two ends of the first segments 517 in the extending direction are connected with the second segments 518 or the isolation pieces 40 respectively, and the two ends of the second segments 518 in the extending direction are connected with the first segments 517 or the isolation pieces 40 respectively, which is conducive to making full use of the length of the first segments 517 and the second segments 518 in the extending direction, ensuring the transmission effect of the current in the cancellation segment 51, and further ensuring the blocking ability of the cancellation structure 50 to the current, so as to avoid that part of the first segments 517 protrudes from the second segments 518 or part of the second segments 518 protrudes from the first segments 517, resulting in that the transmission of the current at the cancellation segment 51 is affected. At the same time, by making the cancellation segment 51 satisfy the above-mentioned curved extension shape, it is conducive to simplifying the setting of the cancellation segment 51, so that the regulation of the total length of the cancellation segment 51 is more convenient, and further simplifies the setting of the transmission phase of the at least two cancellation segments 51 in a single cancellation structure 50 which can be cancelled.

[0100] In a possible implementation, referring to FIGS. 1 and 2, the at least two isolation pieces 40 are parallel in the first direction, so that the adjacent two isolation pieces 40 are spaced apart in the first direction (e.g., the X direction in FIGS. 1 and 2), and the cancellation structure 50 can be arranged between any two adjacent isolation pieces 40, which provides more accommodation space for the setting of the cancellation structure 50, is conducive to increasing the number of the cancellation structure 50, and the number and distribution of the cancellation structure 50 in the antenna array 100 will be described in detail below in combination with specific embodiments of FIGS. 10 to 13.

[0101] In an embodiment, referring to FIGS. 1 and 10, FIG. 10 shows a structure schematic diagram of the antenna array 100 provided by the embodiment of the present application and having one cancellation structure 50. The antenna array 100 includes at least one cancellation structure 50, so that the antenna array 100 can have only one cancellation structure 50, or can have more than one cancellation structure 50. When the number of the cancellation structure 50 is more and the distribution range in the first direction (e.g., the X direction in FIGS. 1 and 10) is wider, the current can be cancelled at different cancellation structures 50 in the first direction, and the current is more difficult to bypass the end of the plurality of isolation pieces 40, which is conducive to improving the blocking ability of the cancellation structure 50 to the current, and further improving the isolation of the transmitting antenna 20 and the receiving antenna 30.

[0102] Please refer to FIG. 11 and FIG. 12, FIG. 11 shows a structure diagram of the structure of the multiple cancellation structures 50 at one end of the adjacent two isolation pieces 40 in the antenna array 100 provided by the embodiment of the present application, and FIG. 12 shows a structure diagram of the structure of the cancellation structure 50 close to the transmitting antenna 20 side in the antenna array 100 provided by the embodiment of the present application. The at least one cancellation structure 50 is located at at least one end of the at least two isolation pieces 40 in the extending direction, so that the cancellation structure 50 can be located at the same end of the at least two isolation pieces 40 in the extending direction or distributed at both ends of the at least two isolation pieces 40 in the extending direction. When the cancellation structure 50 is located at the same end of the at least two isolation pieces 40 in the extending direction, the cancellation structure 50 can only make the current at the end be cancelled, and the current can still bypass the isolation piece 40 from the end where the cancellation structure 50 is not arranged; when the cancellation structure 50 is located at both ends of the at least two isolation pieces 40 in the extending direction, the cancellation structure 50 can make the current at both ends of the at least two isolation pieces 40 be cancelled, which is beneficial to improve the blocking ability of the current of the cancellation structure 50 and further improve the isolation degree of the transmitting antenna 20 and the receiving antenna 30.

[0103] In an embodiment, please refer to FIG. 11, at least two cancellation structures 50 can be arranged between the adjacent two isolation pieces 40, and at least two cancellation structures 50 can be arranged at one end of the adjacent two isolation pieces 40 in the extending direction, and no cancellation structure 50 can be arranged at the other end, or at least one cancellation structure 50 can be arranged. When at least two cancellation structures 50 are arranged at one end of the adjacent two isolation pieces 40 in the extending direction and located between the adjacent two isolation pieces 40, the at least two cancellation structures 50 located at the same end of the isolation piece 40 are arranged at intervals to avoid interference between the at least two cancellation structures 50, which is beneficial to ensure that the at least two cancellation structures 50 located at the same end of the isolation piece 40 can all achieve the blocking ability of the current. At the same time, since the number of the cancellation structures 50 at the same end of the adjacent two isolation pieces 40 is increased, it is beneficial to improve the blocking ability of the current of the cancellation structure 50 and further improve the isolation degree of the transmitting antenna 20 and the receiving antenna 30.

[0104] In an embodiment, please refer to FIG. 12, at least two cancellation structures 50 can be arranged between the adjacent two isolation pieces 40, and the cancellation structure 50 can be arranged at both ends of the adjacent two isolation pieces 40 in the extending direction. The cancellation structure 50 is arranged at both ends of the adjacent two isolation pieces 40, which can make the current at both ends of the adjacent two isolation pieces 40 be cancelled, which is beneficial to improve the blocking ability of the current of the cancellation structure 50 and further improve the isolation degree of the transmitting antenna 20 and the receiving antenna 30.

[0105] The cancellation structure 50 can be arranged between any two adjacent isolation pieces 40, or can be arranged between part of the adjacent isolation pieces 40. As shown in FIG. 12, when the cancellation structure 50 is arranged between part of the adjacent isolation pieces 40, the cancellation structure 50 can be arranged on the side of the at least two isolation pieces 40 close to the transmitting antenna 20. The signal transmitted by the transmitting antenna 20 is coupled to generate a current on the ground plate 10 close to the transmitting antenna 20, so that the cancellation structure 50 can cancel the current in the vicinity of the current generation, which is beneficial to ensure the blocking ability of the cancellation structure 50 to the current.

[0106] In an embodiment, as shown in FIG. 13, the cancellation structure 50 can be arranged in the middle region of the at least two isolation pieces 40. The cancellation structure 50 can be arranged in the middle region of the at least two isolation pieces 40, so that the cancellation structure 50 is spaced apart from the transmitting antenna 20 and the receiving antenna 30 in the first direction (for example, the X direction in FIG. 13). The cancellation structure 50 can cancel the current between the transmitting antenna 20 and the receiving antenna 30, which is also beneficial to ensure the blocking ability of the cancellation structure 50 to the current. It can be understood that the cancellation structure 50 can also be arranged on the side of the at least two isolation pieces 40 close to the receiving antenna 30, so that the cancellation structure 50 can cancel the current close to the receiving antenna 30 which is easily affected by the current.

[0107] In a possible embodiment, as shown in FIGS. 2 and 4, two cancellation structures 50 can be arranged between any two adjacent isolation pieces 40. The two cancellation structures 50 are arranged at the two ends of the adjacent two isolation pieces 40 in the extending direction, so that the current at the two ends of the at least two isolation pieces 40 is cancelled. This is beneficial to improve the blocking ability of the cancellation structure 50 to the current, and further improve the isolation degree of the transmitting antenna 20 and the receiving antenna 30. The two cancellation structures 50 arranged between the adjacent two isolation pieces 40 are beneficial to reduce the number of the cancellation structures 50, improve the distribution range of the cancellation structure 50 in the first direction, save the setting cost of the cancellation structure 50, and ensure the blocking ability of the cancellation structure 50 to the current.

[0108] The two cancellation structures 50 arranged between the adjacent two isolation pieces 40 are spaced apart, so as to avoid interference between the two cancellation structures 50 arranged between the adjacent two isolation pieces 40, and affect the blocking ability of the two cancellation structures 50 to the current. In an embodiment, the two cancellation structures 50 arranged between any two adjacent isolation pieces 40 are coplanar with the ground plate 10. This is beneficial to fully utilize the spacing between the adjacent two isolation pieces 40, realize the miniaturization of the antenna array 100, and arrange the cancellation structure 50 close to the ground plate 10 with large current. The current is more easily cancelled by the cancellation structure 50, which further improves the isolation degree of the transmitting antenna 20 and the receiving antenna 30.

[0109] The number of cancellation segments 51 of the two cancellation structures 50 between the two adjacent isolation members 40 can be the same or different. The number of cancellation segments 51 of a single cancellation structure 50 can be set according to actual needs, as long as the transmission phases of at least two cancellation segments 51 of the single cancellation structure 50 can achieve cancellation. The number of cancellation segments 51 of the cancellation structure 50 has good flexibility, so that the cancellation structure 50 can be applied to more application scenarios and needs. The number of cancellation segments 51 of the cancellation structure 50 will be described in detail below in combination with specific embodiments of FIGS. 1-4 and FIG. 14.

[0110] In an embodiment, please refer to FIGS. 1-4. The number of cancellation segments 51 of the two cancellation structures 50 between the two adjacent isolation members 40 is the same, so as to improve the identity of the two cancellation structures 50 between the two adjacent isolation members 40 and simplify the setting of the cancellation structure 50. For example, the number of cancellation segments 51 of the two cancellation structures 50 between the two adjacent isolation members 40 can be two or three. The number of cancellation segments 51 of a single cancellation structure 50 is small, which is beneficial to simplify the setting of the cancellation structure 50, reduce the setting cost of the cancellation structure 50, and ensure the blocking ability of the cancellation structure 50 to the current.

[0111] In an embodiment, please refer to FIG. 14. FIG. 14 shows a top view of the number of cancellation segments 51 of the cancellation structure 50 between the two adjacent isolation members 40 in the antenna array 100 provided by the application. The number of cancellation segments 51 of the two cancellation structures 50 between the two adjacent isolation members 40 is different. The number of cancellation segments 51 of the two cancellation structures 50 between the two adjacent isolation members 40 can be set according to actual needs, so that the cancellation structure 50 can be applied to more application scenarios and needs. For example, the number of cancellation segments 51 of one of the two cancellation structures 50 between the two adjacent isolation members 40 is three, and the number of cancellation segments 51 of the other cancellation structure 50 is two.

[0112] In a possible implementation, referring to FIG. 2 and FIG. 15, FIG. 15 shows a top view of the number of cancellation segments 51 of the cancellation structure 50 between any two adjacent isolation pieces 40 in the antenna array 100 provided by the embodiments of the present application. Two cancellation structures 50 are arranged between any two adjacent isolation pieces 40, and the two cancellation structures 50 are respectively located at the two ends of the two adjacent isolation pieces 40 in the extending direction. The number of cancellation segments 51 of the two cancellation structures 50 between the two adjacent isolation pieces 40 is the same. When the number of cancellation segments 51 of the two cancellation structures 50 between the two adjacent isolation pieces 40 is the same, the lengths of the two cancellation structures 50 are the same, so that the time of the current passing through the two cancellation structures 50 is the same, and the uniformity of the two cancellation structures 50 between the two adjacent isolation pieces 40 is further improved, and the blocking ability of the two cancellation structures 50 between the two adjacent isolation pieces 40 to the current is ensured.

[0113] The length of the cancellation structure 50 is the sum of the lengths of all the cancellation segments 51 in a single cancellation structure 50. When the lengths of the two cancellation structures 50 are the same and the number of cancellation segments 51 is the same, at least two cancellation segments 51 of the two cancellation structures 50 correspond to each other one by one, and the lengths of the corresponding cancellation segments 51 are the same.

[0114] When two cancellation structures 50 are arranged between any two adjacent isolation pieces 40, and the two cancellation structures 50 are respectively located at the two ends of the two adjacent isolation pieces 40 in the extending direction, and the lengths of the two cancellation structures 50 between the two adjacent isolation pieces 40 are the same and the number of cancellation segments 51 is the same, the lengths of the cancellation structures 50 between different adjacent isolation pieces 40 can be the same or different. The number of cancellation segments 51 of the cancellation structures 50 between different adjacent isolation pieces 40 can be the same or different. The number of cancellation segments 51 of the cancellation structures 50 between adjacent isolation pieces 40 will be described in detail below in combination with specific embodiments of FIG. 2 and FIG. 15.

[0115] In an embodiment, referring to FIG. 2, two cancellation structures 50 are arranged between any two adjacent isolation pieces 40, and the two cancellation structures 50 are respectively located at the two ends of the two adjacent isolation pieces 40 in the extending direction. The number of cancellation segments 51 of all the cancellation structures 50 is the same, and the lengths of all the cancellation structures 50 are the same, so that the shapes of all the cancellation structures 50 and the number of cancellation segments 51 in the antenna array 100 are the same. This is conducive to simplifying the arrangement of the cancellation structure 50, and the uniformity of all the cancellation structures 50 in the entire antenna array 100 is good, which ensures the blocking ability of all the cancellation structures 50 in the antenna array 100 to the current, and further ensures the improvement of the isolation degree of the cancellation structure 50 to the transmitting antenna 20 and the receiving antenna 30. For example, referring to FIG. 2 and FIG. 4, the number of cancellation segments 51 of all the cancellation structures 50 is the same, and the number of cancellation segments 51 can be two or three.

[0116] In an embodiment, referring to FIG. 15, two cancellation structures 50 are arranged between any two adjacent isolation pieces 40, and the two cancellation structures 50 are respectively located at two ends of the two adjacent isolation pieces 40 in the extension direction, but the number of cancellation segments 51 of the cancellation structure 50 between different adjacent isolation pieces 40 is not completely the same. The cancellation structure 50 between one pair of adjacent isolation pieces 40 has two cancellation segments 51, and the cancellation structure 50 between another pair of adjacent isolation pieces 40 has three cancellation segments 51. The number of cancellation segments 51 of a single cancellation structure 50 can be set according to actual needs, and at least two cancellation segments 51 of a single cancellation structure 50 can satisfy the transmission phase of the cancellation structure 50. The number of cancellation segments 51 of the cancellation structure 50 has good flexibility, so that the cancellation structure 50 can be applied to more application scenarios and needs.

[0117] In a possible implementation, referring to FIG. 16 and FIG. 17, FIG. 16 shows a top view of the symmetric arrangement of the cancellation structure 50 between the two adjacent isolation pieces 40 in the antenna array 100 provided by the embodiment of the application, and FIG. 17 shows a top view of the asymmetric arrangement of the cancellation structure 50 between the two adjacent isolation pieces 40 in the antenna array 100 provided by the embodiment of the application. The two cancellation structures 50 between the two adjacent isolation pieces 40 can be symmetrically arranged in a plane perpendicular to the second direction (for example, the Y direction in FIG. 16 and FIG. 17), or can be asymmetrically arranged. When the two cancellation structures 50 between the two adjacent isolation pieces 40 are symmetrically arranged in a plane perpendicular to the second direction, referring to FIG. 16, the lengths of the cancellation segments 51 of the two cancellation structures 50 close to the ground plate 10 are the same, and the lengths of the cancellation segments 51 of the two cancellation structures 50 away from the ground plate 10 are the same. The current close to the ground plate 10 has a greater intensity, so that the position and length of the cancellation segment 51 of the cancellation structure 50 can be correspondingly set according to the size of the current, and the uniformity of the cancellation effect of the current at the two cancellation structures 50 between the two adjacent isolation pieces 40 is improved. When the two cancellation structures 50 between the two adjacent isolation pieces 40 are asymmetric, referring to FIG. 17, the shapes and sizes of the two cancellation structures 50 are the same, which is beneficial to simplify the arrangement of the cancellation structure 50.

[0118] In a possible implementation, referring to FIG. 2 and FIG. 4, the single cancellation structure 50 further comprises two connection sections 52, each of which is connected to two ends of the at least two cancellation sections 51, and each of which is further connected to two adjacent isolation members 40. One of the two connection sections 52 is located at one end of the cancellation structure 50 close to the transmitting antenna 20, and two ends of the connection section 52 are connected to the isolation member 40 close to the transmitting antenna 20 and one end of the at least two cancellation sections 51 respectively. The other of the two connection sections 52 is located at one end of the cancellation structure 50 close to the receiving antenna 30, and two ends of the connection section 52 are connected to the other end of the at least two cancellation sections 51 and the isolation member 40 close to the receiving antenna 30 respectively.

[0119] When the current passes through the cancellation structure 50, the current first passes through one of the two connection sections 52, and is branched when reaching the at least two cancellation sections 51. The branched current converges again when reaching the other of the two connection sections 52. The transmission phases of the at least two cancellation sections 51 can realize cancellation, so that the transmission phases of the currents passing through different cancellation sections 51 can realize cancellation, and thus the cancellation of the currents is realized. Therefore, the arrangement of the connection sections 52 does not affect the transmission phase difference of different cancellation sections 51 of the cancellation structure 50, can improve the stability of the connection between the cancellation sections 51 and the isolation members 40, and ensure that the transmission length of the cancellation sections 51 is not affected by the connection relationship with the isolation members 40, which is beneficial to ensure the stability of the transmission phase difference of the at least two cancellation sections 51, and thus ensure the blocking ability of the cancellation structure 50 to the current and improve the isolation degree of the transmitting antenna 20 and the receiving antenna 30.

[0120] The application further provides an antenna system 200, referring to FIG. 18, which shows a system schematic diagram of the antenna system 200 provided by the embodiment of the application. The antenna system 200 comprises a feeding network 201 and the antenna array 100 of any of the above-mentioned embodiments. The feeding network 201 and the antenna array 100 are electrically connected, and the feeding network 201 is configured to provide signals to the transmitting antenna 20 and / or the receiving antenna 30 of the antenna array 100.

[0121] It can be understood that the antenna system 200 in the embodiment has the antenna array 100 in the above-mentioned embodiments, and thus the antenna system 200 in the embodiment has all the technical effects of the antenna array 100 in the above-mentioned embodiments. Since the technical effects of the antenna array 100 have been fully described in the above-mentioned embodiments, they will not be described here again.

[0122] The application further provides a base station 300, please refer to FIG. 19 and FIG. 20, FIG. 19 shows a system schematic diagram of an active base station 310 provided by the embodiments of the application, and FIG. 20 shows a system schematic diagram of a passive base station 320 provided by the embodiments of the application. The base station 300 comprises the above-mentioned antenna system 200, and the base station 300 comprises the active base station 310 and the passive base station 320, and the base station 300 forms include but are not limited to at least one of a radio remote unit (RRU) and an active antenna system (AAU).

[0123] In an embodiment, please refer to FIG. 18, the base station 300 is the active base station 310, the active base station 310 comprises a baseband unit 301 and a radio frequency unit 302, the radio frequency unit 302 is integrated with the antenna system 200, the baseband unit 301 is used for modulating a baseband signal, the radio frequency unit 302 is used for converting the modulated baseband signal into a radio frequency signal, and the antenna system 200 is used for transmitting the radio frequency signal. The active base station 310 is beneficial to reduce the transmission loss of the signal between the radio frequency unit 302 and the antenna system 200.

[0124] In an embodiment, please refer to FIG. 19, the base station 300 is the passive base station 320, the passive base station 320 comprises a baseband unit 301 and a radio frequency remote unit 303, the baseband unit 301 is used for modulating a baseband signal, the radio frequency remote unit 303 is used for converting the modulated baseband signal into a radio frequency signal, and the antenna system 200 is used for transmitting the radio frequency signal. The passive base station 320 makes the deployment of the base station 300 more flexible and is beneficial to reduce the manufacturing cost of the base station 300.

[0125] It can be understood that the base station 300 in the embodiment has the antenna system 200 in the above-mentioned embodiments, and therefore, the base station 300 in the embodiment has all the technical effects of the antenna system 200 in the above-mentioned embodiments. Since the technical effects of the antenna system 200 have been fully described in the above-mentioned embodiments, they will not be described here.

[0126] The application further provides a terminal 400, please refer to Fig. 21, Fig. 21 shows the system schematic diagram of the terminal 400 provided by the embodiment of the application. The terminal 400 comprises a signal processing unit 401 and the antenna array 100 described in any one of the above embodiments, the signal processing unit 401 is used for processing signals, and the antenna array 100 is used for transmitting the processed signals. The terminal 400 can be a customer terminal equipment (CPE). The CPE can be, for example, a network device that converts mobile cellular signals, such as signals in LTE, Wideband Code Division Multiple Access (W-CDMA) or Global System for Mobile Communication (GSM) systems, into Wireless Fidelity (Wi-Fi) signals or Wireless Local Area Networks (WLAN) signals. In some embodiments, the CPE can be a fixed wireless access (FAW) device, wherein the FAW is a technology that combines fixed network communication and wireless communication, and can provide broadband access services for users. Alternatively, the terminal can also be a lampsite, which can be used to introduce base station signals indoors to solve the problem of indoor blind area coverage.

[0127] It can be understood that the terminal 400 in the embodiment has the antenna array 100 in the above embodiments, and therefore the terminal 400 in the embodiment has all the technical effects of the antenna array 100 in the above embodiments. Since the technical effects of the antenna array 100 have been fully described in the above embodiments, they will not be described here again.

[0128] The above embodiments are only used to illustrate the technical solutions of the application, rather than limit them; although the application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacements for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application, and should be included in the protection scope of the application.

Claims

1. An antenna array, characterized in that, include: A ground plane, a transmitting antenna, and a receiving antenna, wherein the transmitting antenna and the receiving antenna are spaced apart and disposed on the same side of the ground plane; At least two isolators are connected to the ground plane. The at least two isolators are located between the transmitting antenna and the receiving antenna. The direction from the transmitting antenna to the receiving antenna is taken as the first direction. The extension directions of the at least two isolators intersect the first direction. The at least two isolators are spaced apart in the first direction. At least one cancellation structure is located at at least one end of the at least two isolators in the extension direction. The cancellation structure and the ground plane are spaced apart. Each cancellation structure includes at least two cancellation segments that are in contact only at both ends. The two ends of the at least two cancellation segments are respectively connected to two adjacent isolators. The transmission phase of the at least two cancellation segments can be cancelled.

2. The antenna array according to claim 1, characterized in that, The product of the transmission phase difference between two adjacent cancellation segments in a single cancellation structure and the number of cancellation segments is an odd multiple of 360°.

3. The antenna array according to claim 1, characterized in that, Each cancellation structure comprises n cancellation segments, with a transmission phase difference of φ between two adjacent cancellation segments. The cancellation structure satisfies the following relationship: φ = 360° × a / n, where n ≥ 2, n is an integer, and a is an odd number.

4. The antenna array according to any one of claims 1 to 3, characterized in that, Each of the cancellation structures comprises at least three cancellation segments, and the at least three cancellation segments are not coplanar.

5. The antenna array according to any one of claims 1 to 3, characterized in that, The at least two cancellation segments of a single cancellation structure are coplanar.

6. The antenna array according to claim 5, characterized in that, The at least two canceling segments of a single canceling structure are coplanar with the ground plane.

7. The antenna array according to any one of claims 1 to 6, characterized in that, The canceling segment extends in a curved manner, and the canceling segment includes an alternately connected first segment and a second segment, the first segment extending along the first direction and the second segment extending along a direction perpendicular to the first direction.

8. The antenna array according to any one of claims 1 to 7, characterized in that, On a plane perpendicular to the first direction, the orthographic projections of the at least two isolators overlap the orthographic projection of the at least one canceling structure.

9. The antenna array according to any one of claims 1 to 8, characterized in that, There are two canceling structures between two adjacent isolation members, and the two canceling structures are spaced apart and located at both ends of the two adjacent isolation members in the extension direction.

10. The antenna array according to claim 9, characterized in that, The number of cancellation segments in the two cancellation structures between two adjacent isolation members is the same.

11. The antenna array according to claim 10, characterized in that, The number of cancellation segments in the two cancellation structures between two adjacent isolation members is two or three.

12. The antenna array according to claim 10 or 11, characterized in that, The length of the cancellation structure is the sum of the lengths of the cancellation segments in the cancellation structure, and the lengths of the two cancellation structures between two adjacent isolation members are the same.

13. The antenna array according to any one of claims 9 to 12, characterized in that, With the direction perpendicular to the first direction as the second direction, the two canceling structures between two adjacent isolation members are arranged symmetrically in a plane perpendicular to the second direction.

14. The antenna array according to any one of claims 1 to 13, characterized in that, The number of cancellation structures is at least two, and the number of cancellation segments in the at least two cancellation structures is the same.

15. The antenna array according to any one of claims 1 to 14, characterized in that, Each of the cancellation structures further includes two connecting segments, which are respectively connected to the two ends of the at least two cancellation segments, and the two connecting segments are also respectively connected to the two adjacent isolation members.

16. An antenna system, characterized in that, It includes a power supply network and an antenna array as described in any one of claims 1 to 15, wherein the antenna array and the power supply network are electrically connected.

17. A base station, characterized in that, Includes the antenna system as described in claim 16.

18. The base station according to claim 17, characterized in that, The base station also includes a baseband unit and a radio frequency (RF) unit. The RF unit is integrated with the antenna system. The baseband unit is used to modulate the baseband signal, the RF unit is used to convert the modulated baseband signal into an RF signal, and the antenna system is used to transmit the RF signal.

19. The base station according to claim 17, characterized in that, The base station also includes a baseband unit and a radio frequency remote unit. The baseband unit is used to modulate the baseband signal, and the radio frequency remote unit is used to convert the modulated baseband signal into a radio frequency signal. The antenna system is used to transmit the radio frequency signal.

20. A terminal, characterized in that, It includes a signal processing unit and an antenna array as described in any one of claims 1 to 15, wherein the signal processing unit is used to process signals and the antenna array is used to transmit the processed signals.

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