Phase shifter, antenna and base station

Abstract

The invention discloses a phase shifter, an antenna and a base station. The phase shifter comprises a cavity and a strip line, the cavity comprises a side plate and a plurality of partition plates, the partition plates are arranged on the side plate at intervals, and the partition plates and the side plate form at least one containing space. The strip line can comprise feeding parts and output parts, the feeding parts can be arranged in one or more containing spaces respectively, and medium parts are arranged between the feeding parts and the partition plates corresponding to the containing spaces where the feeding parts are located. And the output part is connected with the feeding part and extends out of the accommodating space, and the output part is used for being connected with an oscillator unit of the antenna. When the scheme is adopted, the miniaturization of the cavity can be realized, namely, the miniaturization of the phase shifter can be realized, the shielding of the phase shifter on the antenna array can be reduced, the influence of the phase shifter on a directional diagram of the antenna array can be reduced, and the performance of the antenna array can be improved.

Description

Technical Field

[0001] The present application relates to the field of antennas, and in particular to a phase shifter, an antenna and a base station. Background Art

[0002] In the antenna of the base station, the radiating unit (or vibrator unit) is connected to the feeding network. The feeding network is usually composed of a controlled impedance transmission line. The feeding network feeds the signal to the radiating unit according to a certain amplitude and phase, or sends the received signal to the signal processing unit of the base station according to a certain amplitude and phase. The feeding network may include phase shifters, combiners, and filters. The phase shifter is used to change the maximum direction of antenna signal radiation. The combiner is used to combine signals of different frequencies and transmit them through the antenna, or to divide the signals received by the antenna into multiple channels according to different frequencies and transmit them to the signal processing unit for processing. The filter is used to filter out interference signals. Existing phase shifters are large in size and have a large obstruction on the massive multiple-input multiple-output antenna array (Massive MIMO, MM), affecting the performance of the antenna array. Summary of the invention

[0003] The present application provides a phase shifter, an antenna and a base station to reduce the obstruction to the antenna array and improve the performance of the antenna array.

[0004] In a first aspect, the present application provides a phase shifter, which may include a cavity and a strip line, wherein the cavity may include a side plate and a plurality of partitions, the plurality of partitions are arranged on the side plate at intervals, and the plurality of partitions and the side plate form at least one accommodating space. The strip line may include a feeding part and an output part, the feeding part may be arranged in one or more of the accommodating spaces, respectively, and a dielectric part is arranged between the feeding part and the partition corresponding to the accommodating space where the feeding part is located; the output part is connected to the feeding part and may extend beyond the accommodating space, and the output part may be connected to the oscillator unit of the antenna.

[0005] In the technical solution provided by the present application, the cavity has at least one accommodating space, and the feeding part is arranged in at least one accommodating space, which can physically separate the feeding parts located in different accommodating spaces, and can avoid electromagnetic coupling between the feeding parts located in different accommodating spaces, so that the distance between the feeding parts located in different accommodating spaces can be smaller, so that the cross-sectional area of ​​the cavity can be smaller, that is, the volume of the cavity can be smaller, and the cavity can be miniaturized, that is, the phase shifter can be miniaturized, which can reduce the shielding of the antenna array by the phase shifter, reduce the influence of the phase shifter on the antenna array radiation pattern, and improve the performance of the antenna array. When the phase shifter provided by the present application is applied to an antenna, the feeding part can transmit signals between multiple vibrator units, and the phase difference between two adjacent vibrator units can be achieved by changing the setting of the dielectric part.

[0006] In a specific implementation scheme, the output part may include a first connecting section and a first transition section, one end of the first connecting section may be connected to the feeding part, the first transition section may be located outside the accommodation space, one end of the first transition section may be connected to the other end of the first connecting section, and the other end of the first transition section may be connected to the oscillator unit of the antenna. The connection between the output part and the oscillator unit is relatively convenient, and no additional transition components are required.

[0007] In a specific implementation scheme, the output portion may further include a second connecting section, the second connecting section may be located outside the accommodation space, and the other end of the first adapter section may be connected to the antenna vibrator unit through the second connecting section. The output portion may be more accessible to the vibrator unit, and the connection with the vibrator unit may be more convenient.

[0008] In a specific implementation scheme, there may be multiple feeding parts, and the multiple feeding parts may be arranged in at least one of the accommodating spaces; the strip line further includes a transition part, and the feeding parts located in different accommodating spaces may be connected through the transition part. The strip line has a larger layout space, and the arrangement of the feeding parts is more flexible.

[0009] In a specific implementation scheme, the transition section may include a third connection section, a second transition section, and a fourth connection section connected in sequence, one end of the third connection section may be connected to the feed section located in one of the storage spaces, one end of the fourth connection section may be connected to the feed section located in another storage space, the second transition section may be located outside the storage space, and the two ends of the second transition section may be connected to the other end of the third connection section and the other end of the fourth connection section, respectively. The connection of the feed sections in different storage spaces can be realized, and the jump of the strip line between different storage spaces can be realized without the need for additional transition components.

[0010] In a specific implementation scheme, the projections of the feeding parts in different accommodating spaces along the second direction may have overlapping parts; the second direction is perpendicular to the first direction, and the first direction is the extension direction of the side plate. The strip line can be wound across different accommodating spaces.

[0011] In a specific implementation scheme, the projections of the feeding parts in the same accommodation space along the third direction may have overlapping parts; the third direction is perpendicular to the first direction and the second direction, the second direction is perpendicular to the first direction, and the first direction is the extension direction of the side plate. The strip line can be wound in the same accommodation space.

[0012] In a specific implementation scheme, the medium portion may have a notch, and the notch may be arranged offset from the overlapping portion in the second direction, so as to reduce the area of ​​the medium portion while ensuring that the medium portion corresponds to the feeding portion in the second direction, thereby improving the effective utilization rate of the medium portion and reducing the cost.

[0013] In a specific possible implementation, the partitions may be provided on both sides of the side panel along the third direction, the third direction is perpendicular to the first direction and the second direction, the second direction is perpendicular to the first direction, and the first direction is the extension direction of the side panel. Accommodation spaces may be formed on both sides of the side panel along the third direction, and belt lines may be arranged on both sides of the side panel along the third direction, which may increase the layout space of the belt lines and improve the flexibility of belt line layout.

[0014] In a specific possible implementation mode, the partition plate and the side plate can be vertically arranged to facilitate the forming of the cavity.

[0015] In the second aspect, the present application also provides an antenna, which may include a vibrator unit and a phase shifter as in any of the possible implementation schemes in the first aspect above; the vibrator unit may be multiple, and the multiple vibrator units may be arranged along a first direction, and the first direction is the extension direction of the side plate; the balun of each vibrator unit may be fixedly connected to the cavity respectively; the feeder of each vibrator unit may be electrically connected to the feeding part through the output part respectively. The phase shifter has less obstruction to the antenna array, and the performance of the antenna array can be improved.

[0016] In a specific possible implementation, the antenna may further include a reflector, and the reflector and the vibrator unit may be arranged on both sides of the phase shifter along the second direction, and the reflector and the phase shifter may be arranged at intervals; or, the reflector and the vibrator unit may be arranged on the same side of the phase shifter along the second direction, and the balun of the vibrator unit may pass through the reflector. The reflector can enhance the antenna signal reception or transmission capability, and can also block and shield interference of other radio waves from the back of the reflector on the antenna signal reception.

[0017] In a third aspect, the present application further provides a base station, which may include a signal processing unit and an antenna as in any of the embodiments of the second aspect above; the signal processing unit may be electrically connected to the feeding unit to be electrically connected to the vibrator unit. The performance of the antenna is relatively superior, and the performance of the base station is relatively reliable and has high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a system architecture applicable to an embodiment of the present application;

[0019] Figure 2 It is a structural schematic diagram of an antenna feeding system of a base station in one embodiment shown in the above figure;

[0020] Figure 3 A schematic diagram of the structure of a base station antenna according to a possible embodiment of the present application;

[0021] Figure 4 A schematic diagram of an exploded structure of a phase shifter provided in a possible embodiment of the present application;

[0022] Figure 5 A schematic diagram of the structure of a cavity of a phase shifter provided in an embodiment of the present application;

[0023] Figure 6 A schematic diagram of the structure of a cavity of a phase shifter provided in an embodiment of the present application;

[0024] Figure 7 Another schematic diagram of the structure of the cavity of the phase shifter provided in an embodiment of the present application;

[0025] Figure 8 Another schematic diagram of the structure of the cavity of the phase shifter provided in an embodiment of the present application;

[0026] Fig. 9 Another schematic diagram of the structure of the cavity of the phase shifter provided in an embodiment of the present application;

[0027] Fig.10 Another schematic diagram of the structure of the cavity of the phase shifter provided in an embodiment of the present application;

[0028] Fig.11 A schematic diagram of the structure of a phase shifter provided in an embodiment of the present application;

[0029] Fig.12 A schematic diagram of the structure of the antenna provided in the embodiment of the present application;

[0030] Fig.13 A schematic diagram of the structure of an antenna provided in an embodiment of the present application;

[0031] Fig.14 Another schematic diagram of the structure of the antenna provided in the embodiment of the present application;

[0032] Fig.15 A schematic diagram of the structure of the strip line of the phase shifter provided in an embodiment of the present application.

[0033] Reference numerals:

[0034] 10-antenna; 20-pole; 30-antenna adjustment bracket; 40-radome;

[0035] 50-RF processing unit; 60-signal processing unit; 70-cable line; 80-feeding network;

[0036] 11-radiation unit; 12-reflection plate; 81-transmission component; 82-calibration network;

[0037] 83-phase shifter; 84-combiner; 85-filter; 100-cavity;

[0038] 200-strip line; 300-medium part; 400-vibrator unit; 101-side plate;

[0039] 102- partition; 201- feeding part; 202- output part; 203- switching part;

[0040] 301-notch; 401-balun; 402-first welding point; 403-second welding point;

[0041] 2021-first connecting section; 2022-first transition section; 2023-second connecting section; 2031-third connecting section;

[0042] 2032 - second transfer section; 2033 - fourth connecting section. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings. However, the example implementation can be implemented in various forms and should not be construed as being limited to the implementations set forth herein. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted. The words expressing position and direction described in the embodiments of the present application are all described with reference to the accompanying drawings as examples, but changes may be made as needed, and the changes made are all included in the scope of protection of the present application. The drawings of the embodiments of the present application are only used to illustrate the relative position relationship and do not represent the true proportion.

[0044] The following description sets forth specific details to facilitate understanding of the present application, but the embodiments of the present application can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the embodiments of the present application. Therefore, the present application is not limited to the specific implementation methods disclosed below.

[0045] Figure 1 A schematic diagram of a system architecture applicable to the embodiment of the present application is shown as an example. Figure 1 As shown, the system architecture may include wireless access network equipment and terminals, such as but not limited to Figure 1The base station shown. Wireless communication can be achieved between the wireless access device and the terminal. The wireless access network device can be located in a base station subsystem (BSS), a terrestrial radio access network (UMTS terrestrial radio access network, UTRAN) or an evolved terrestrial radio access network (evolved universal terrestrial radio access, E-UTRAN), and is used to provide cell coverage for wireless signals to achieve connection between the terminal device and the radio frequency end of the wireless network. Specifically, the base station can be a base station (base transceiver station, BTS) in a GSM or CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved base station (evolutional NodeB, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or the base station can also be a relay station, an access point, a vehicle-mounted device, a wearable device, a base station in a 5G network, or a base station in a future evolved PLMN network, etc., for example, a new wireless base station, which is not limited in the embodiments of the present application.

[0046] Figure 2 The schematic diagram of the structure of the antenna feeding system of the base station in an embodiment as shown in the above figure is shown. The antenna feeding system of the base station can generally include structures such as an antenna 10, a pole 20, and an antenna adjustment bracket 30. Among them, the antenna 10 of the base station includes a radome 40, which has good electromagnetic wave penetration characteristics in electrical performance and can withstand the influence of external harsh environment in mechanical performance, thereby protecting the antenna system from the influence of the external environment. The radome 40 can be installed on the pole 20 or the tower through the antenna adjustment bracket 30 to facilitate the reception or transmission of the antenna 10 signal.

[0047] In addition, the base station may further include a radio frequency processing unit 50 and a signal processing unit 60. For example, the radio frequency processing unit 50 may be used to perform frequency selection, amplification, and down-conversion processing on the signal received by the antenna 10, and convert it into an intermediate frequency signal or a baseband signal and send it to the signal processing unit 60, or the radio frequency processing unit 50 may be used to convert the intermediate frequency signal of the signal processing unit 60 into an electromagnetic wave through the antenna 10 after up-conversion and amplification processing and send it out. The signal processing unit 60 may be connected to the feeding structure of the antenna 10 through the radio frequency processing unit 50, and is used to process the intermediate frequency signal or baseband signal sent by the radio frequency processing unit 50.

[0048] In a possible embodiment, Figure 2 As shown, the RF processing unit 50 can be integrally provided with the antenna 10, and the signal processing unit 60 is located at the far end of the antenna 10. In some other embodiments, the RF processing unit 50 and the signal processing unit 60 can also be located at the far end of the antenna 10 at the same time. The RF processing unit 50 and the signal processing unit 60 can be connected via a cable 70.

[0049] More specifically, please refer to Figure 2 and Figure 3 , Figure 3 This is a schematic diagram of the structure of a base station antenna in a possible embodiment of the present application. Figure 3 As shown, the antenna 10 of the base station may include a radiation unit 11 and a reflector 12. The radiation unit 11 may also be referred to as an antenna vibrator unit, a vibrator unit, etc. The radiation unit 11 is a unit constituting the basic structure of the antenna array, which can effectively radiate or receive antenna signals. In the antenna 10, the frequencies of different radiation units 11 may be the same or different. The reflector 12 may also be referred to as a bottom plate, an antenna panel, or a metal reflective surface, etc. The reflector 12 may reflect the antenna signal and gather it at the receiving point. The radiation unit 11 is usually placed on one side of the reflector 12, which can not only greatly enhance the receiving or transmitting capability of the antenna 10 signal, but also block and shield the interference of other radio waves from the back side of the reflector 12 (the back side of the reflector 12 in this application refers to the side of the reflector 12 opposite to the side for setting the radiation unit 11) on the reception of the antenna signal.

[0050] In the antenna 10 of the base station, the radiation unit 11 is connected to the feed network 80. The feed network 80 is usually composed of a controlled impedance transmission line. The feed network 80 can feed the signal to the radiation unit 11 according to a certain amplitude and phase, or send the received signal to the signal processing unit 60 of the base station according to a certain amplitude and phase. In addition, the feed network 80 can realize different radiation beam pointing through the transmission component 81, or connect with the calibration network 82 to obtain the calibration signal required by the system. The feed network 80 may include a phase shifter 83 to change the maximum direction of antenna signal radiation. The feed network 80 may also be provided with a combiner 84 (which can be used to combine signals of different frequencies into one path and transmit them through the antenna 10; or when used in reverse, it can be used to divide the signal received by the antenna 10 into multiple paths according to different frequencies and transmit them to the signal processing unit 60 for processing), a filter 85 (used to filter out interference signals) and other modules for expanding performance.

[0051] The phase shifter provided in the embodiment of the present application can be adapted to the antenna 10 of the base station antenna as part of the feed network 80 to change the maximum direction of antenna signal radiation. In current base station antennas, the phase shifter is large in size and blocks the antenna array to a large extent, affecting the performance of the antenna array.

[0052] Based on this, an embodiment of the present application provides a phase shifter to reduce the shielding of the antenna array, thereby improving the performance of the antenna array. The phase shifter is described in detail below.

[0053] First refer to Figure 4 , Figure 4 The exploded structure diagram of a phase shifter provided by a possible embodiment of the present application is shown. In the coordinate directions of the following figures, the direction shown on the x-axis represents the first direction, the direction shown on the y-axis represents the second direction, and the direction shown on the z-axis represents the third direction; the second direction may be perpendicular to the first direction, and the third direction may be perpendicular to the first direction and the second direction. Figure 4 As shown, as a possible embodiment, the phase shifter may include a cavity 100 and a strip line 200. The cavity 100 may include a side plate 101 and a plurality of partitions 102, wherein the plurality of partitions 102 are arranged at intervals on the side plate 101. For example, the side plate 101 extends along a first direction, so that the first direction can be understood as the length direction of the side plate 101, and the plurality of partitions 102 can be arranged at intervals along a second direction. Specifically, the spacing between adjacent partitions 102 along the second direction may be the same or different. Each partition 102 may be arranged perpendicular to the side plate 101, so that the plurality of partitions 102 may be arranged parallel to each other.

[0054] Figure 5 A schematic structural diagram of a cavity of a phase shifter provided in an embodiment of the present application is shown. Figure 6 A schematic diagram of the structure of the cavity of the phase shifter provided in an embodiment of the present application is shown. A plurality of partitions 102 are respectively connected to the side plates 101, and the plurality of partitions 102 and the side plates 101 form at least one accommodation space, and each accommodation space can be regarded as a sub-cavity of the cavity 100. Specifically, the formation of the accommodation space may include various situations, for example, Figure 5 and Figure 6 As shown, a form of accommodating space can be formed between two adjacent partitions 102 and the side plate 101. In the cross section perpendicular to the first direction, the cross-sectional shape of the two adjacent partitions 102 and the side plate 101 is similar to a U-shape. For the sake of ease of description, this form of accommodating space can be correspondingly referred to as a U-shaped accommodating space.

[0055] Figure 7 Another schematic structural diagram of the cavity of the phase shifter provided in an embodiment of the present application is shown. Figure 8 Another schematic diagram of the structure of the cavity of the phase shifter provided in the embodiment of the present application is shown. Figure 7 and Figure 8As shown, a storage space can also be formed between the outermost partition 102 and the side plate 101 in the second direction. In the cross section perpendicular to the first direction, the cross-sectional shape of the outermost partition 102 and the side plate 101 is similar to an L-shape. For the convenience of description, this type of storage space can be correspondingly referred to as an L-shaped storage space. Thus, the cavity 100 formed by the plurality of partitions 102 and the side plate 101 is an open structure having at least one storage space, or in other words, the cavity 100 formed by the plurality of partitions 102 and the side plate 101 is an open structure having at least one sub-cavity.

[0056] Fig. 9 Another schematic structural diagram of the cavity of the phase shifter provided in an embodiment of the present application is shown. Fig.10 Another schematic diagram of the structure of the cavity of the phase shifter provided in the embodiment of the present application is shown. Fig. 9 and Fig.10 As shown, in a specific implementation, partitions 102 can be respectively provided on both sides of the side panel 101 along the third direction, so that a receiving space can be formed on both sides of the side panel 101 along the third direction, and the strip line 200 can be arranged on both sides of the side panel 101 along the third direction, which can increase the layout space of the strip line 200 and improve the flexibility of the layout of the strip line 200.

[0057] In the specific implementation, Figure 4 As shown, the strip line 200 may include a feeding portion 201 and an output portion 202 . The feeding portion 201 may extend along a first direction and may be disposed in one or more accommodating spaces, that is, the feeding portion 201 may be disposed in one or more sub-cavities of the cavity 100 . In addition, a dielectric portion 300 is arranged between the feeding portion 201 and the partition 102 corresponding to the accommodating space where the feeding portion 201 is located. For example, at least a portion of the feeding portion 201 is arranged in the U-shaped accommodating space, and a dielectric portion 300 is arranged between the feeding portion 201 and one of the two adjacent partitions 102 forming the U-shaped accommodating space, or, dielectric portions 300 are respectively arranged between the feeding portion 201 and the two adjacent partitions 102 forming the U-shaped accommodating space, that is, dielectric portions 300 are arranged on both sides of the feeding portion 201 along the second direction; at least a portion of the feeding portion 201 is arranged in the L-shaped accommodating space, and a dielectric portion 300 is arranged between the feeding portion 201 and a partition 102 forming the L-shaped accommodating space, that is, a dielectric portion 300 is arranged on one side of the feeding portion 201 along the second direction.

[0058] In a specific implementation, the feeding part 201 can be fixed in the cavity 100 by the dielectric part 300. Specifically, when the dielectric part 300 is provided on both sides of the feeding part 201 along the second direction, the dielectric parts 300 on both sides of the feeding part 201 can be fixedly connected to the corresponding partition 102 by bonding or the like, or one of the dielectric parts 300 on both sides of the feeding part 201 is fixedly connected to the corresponding partition 102 by bonding or the like, and the other dielectric part 300 is slidably connected to the corresponding partition 102. At this time, the feeding part 201 can be fixedly connected to the one dielectric part 300 fixedly connected to the partition 102 by bonding or the like, or the feeding part 201 can be clamped by two dielectric parts 300. When the dielectric part 300 is provided on one side of the feeding part 201 along the second direction, the dielectric part 300 can be fixedly connected to the partition 102 by bonding or the like, and the feeding part 201 can be fixedly connected to the dielectric part 300 by bonding or the like.

[0059] Fig.11 FIG. 1 is a schematic diagram showing the structure of a phase shifter provided in an embodiment of the present application. Figure 4 and Fig.11 As shown, the output part 202 is connected to the feeding part 201 and extends outside the accommodation space, specifically, the output part 202 extends outside the cavity 100. The output part 202 is physically and electrically connected to the feeding part 201, and the output part 202 can be regarded as a structure extending outward from the feeding part 201. In actual application, the output part 202 is connected to the antenna vibrator unit 400, specifically, the output part 202 is connected to the feeder line of the vibrator unit 400, thereby realizing the connection between the feeding part 201 and the vibrator unit 400.

[0060] Fig.12 FIG. 1 shows a schematic diagram of the structure of the antenna provided in an embodiment of the present application. Fig.12 As shown, when the phase shifter provided by the present application is applied to an antenna, it can transmit signals between multiple vibrator units 400. The multiple vibrator units 400 can be arranged in a row along a first direction, and the balun 401 of each vibrator unit 400 is fixedly connected to the cavity 100. Specifically, in combination with Figure 4As shown, the balun 401 can be fixedly connected to the outermost partition 102 in the second direction. The feeder of each vibrator unit 400 can be electrically connected to an output part 202 respectively, so that each vibrator unit 400 is electrically connected to the feeding part 201, and the feeding part 201 can feed signals to multiple vibrator units 400, or receive signals received by multiple vibrator units 400. In specific implementation, the antenna can also include a reflector, and the setting position of the reflector can have multiple situations. For example, the reflector and the vibrator unit 400 can be arranged on both sides of the phase shifter along the second direction, that is, the phase shifter is arranged between the reflector and the vibrator unit 400. Specifically, the reflector and the phase shifter can be arranged at intervals, or the phase shifter can be suspended relative to the reflector. The reflector and the vibrator unit 400 can also be arranged on the same side of the phase shifter along the second direction. In this case, the balun of the vibrator unit 400 passes through the reflector, and the balun does not contact the reflector.

[0061] The phase shifter provided in the present application has an open structure in the cavity 100, which is convenient for miniaturized profile pultrusion and easy to form. The cavity 100 has at least one sub-cavity, and the feeding part 201 is arranged in at least one sub-cavity, which can physically separate the feeding parts 201 located in different sub-cavities, and can avoid electromagnetic coupling between the feeding parts 201 located in different sub-cavities, so that the distance between the feeding parts 201 located in different sub-cavities can be smaller, so that the cross-sectional area of ​​the cavity 100 can be smaller, that is, the volume of the cavity 100 can be smaller, and the cavity 100 can be miniaturized, that is, the phase shifter can be miniaturized, which can reduce the shielding of the antenna array by the phase shifter, reduce the influence of the phase shifter on the antenna array radiation pattern, and achieve the improvement of the performance of the antenna array.

[0062] In actual application, the dielectric part 300 can be located below the vibrator unit 400 along the second direction, or the dielectric part 300 can be located between two adjacent vibrator units 400. The phase difference between two adjacent vibrator units 400 can be achieved by changing the setting of the dielectric part 300 (such as the presence or absence of the dielectric part 300, the position of the dielectric part 300, etc.).

[0063] Since the cavity 100 is an open structure, the strip line 200 can be directly assembled into the cavity 100 from a third direction, that is, the strip line 200 can be directly assembled into the cavity 100 from both sides of the cavity 100, and does not need to be assembled into the cavity 100 from one end of the cavity 100 along the length direction. The assembly of the strip line 200 is relatively simple and the difficulty of implementation is relatively small. In addition, the output part 202 extending outward from the feeding part 201 can be directly connected to the vibrator unit 400, that is, no additional switching structure is required between the strip line 200 and the vibrator unit 400, which can reduce the insertion loss of the feeding network.

[0064] In a specific implementation, a row of vibrator units 400 connected to the same cavity 100 shares a strip line 200, so that a row of vibrator units 400 can form an antenna module, and multiple antenna modules further form an antenna array. Therefore, the phase shifter provided in this application facilitates the modularization of the antenna array. The phase shifter provided in this application can be applied to passive antennas or active antennas. The balun 401 of the vibrator unit 400 can be directly welded to the cavity 100 by laser welding, which can achieve electroplating-free welding and has a low connection cost.

[0065] Fig.13 A structural schematic diagram of an antenna provided in an embodiment of the present application is shown. Fig.14 Another schematic diagram of the structure of the antenna provided in the embodiment of the present application is shown. Fig.13 As shown, the balun 401 of the oscillator unit 400 can be perpendicular to the side plate 101, or, as shown in FIG. Fig.14 As shown, the balun 401 of the oscillator unit 400 can also be parallel to the side plate 101. The feed line of the oscillator unit 400 and the output part 202 can be directly connected by laser welding without the need for an additional adapter 203, which is convenient for connection and can reduce signal loss. Fig.10 and Fig.11 In the figure, the welding point between the balun 401 of the oscillator unit 400 and the cavity 100 is represented as a first welding point 402 , and the welding point between the feed line of the oscillator unit 400 and the strip line 200 is represented as a second welding point 403 .

[0066] Fig.15 FIG. 1 shows a schematic diagram of the structure of the strip line of the phase shifter provided in an embodiment of the present application. Fig.15 As shown, the output part 202 may include a first connecting section 2021 and a first transition section 2022, so that the output part 202 extends outside the cavity 100. Specifically, one end of the first connecting section 2021 is connected to the feeding part 201, the first transition section 2022 is located outside the accommodation space, and one end of the first transition section 2022 is connected to the other end of the first connecting section 2021. In actual application, the other end of the first transition section 2022 is connected to the antenna vibrator unit 400, and the connection between the output part 202 and the vibrator unit 400 is relatively convenient, and no additional transition section 203 is required. In specific implementation, the first connecting section 2021 and the first transition section 2022 can be arranged at an angle, for example, the first connecting section 2021 and the first transition section 2022 can be arranged perpendicular to each other.

[0067] In a specific implementation, the output part 202 may further include a second connecting section 2023, the second connecting section 2023 is located outside the accommodation space, and the first connecting section 2021, the first transition section 2022 and the second connecting section 2023 are connected in sequence. The other end of the first transition section 2022 is connected to one end of the second connecting section 2023, and the other end of the second transition section 2022 is connected to the antenna vibrator unit 400, that is, the other end of the first transition section 2022 is connected to the antenna vibrator unit 400 through the second connecting section 2023, so that the output part 202 can be more easily close to the vibrator unit 400, and the connection with the vibrator unit 400 is more convenient. Specifically, the second connecting section 2023 and the first transition section 2022 can be arranged at an angle, for example, the second connecting section 2023 and the first transition section 2022 can be arranged perpendicular to each other, so that the output part 202 can be similar to a U-shaped structure.

[0068] As a possible implementation, there may be multiple feeding parts 201, and multiple feeding parts 201 may be arranged in at least one accommodation space, so that the layout space of the strip line 200 is larger. For example, the cavity 100 has three accommodation spaces, and there are three feeding parts 201, and the three feeding parts 201 are respectively arranged in the three accommodation spaces. It can be understood that the number of feeding parts 201 can be more than the number of accommodation spaces of the cavity 100, and multiple feeding parts 201 can be arranged at intervals in one accommodation space.

[0069] In a specific implementation, the strip line 200 may also include a transfer portion 203, and the feeding portions 201 located in different accommodating spaces may be connected through the transfer portion 203, or the transfer portion 203 may be used to realize the jump of the strip line 200 between different accommodating spaces, so that there is no need to add an additional transfer portion 203, and the signal loss can be reduced. The strip line 200 is divided into a plurality of feeding portions 201. During actual assembly, the plurality of feeding portions 201 may be respectively loaded into the cavity 100, and then connected into one body through the transfer portion 203, so as to realize physical connection and electrical connection, and the assembly of the strip line 200 is relatively convenient. Alternatively, the strip line 200 may be integrally bent to form a plurality of feeding portions 201 and a transfer portion 203, and then loaded into the cavity 100. During actual application, different vibrator units 400 may be respectively connected to the feeding portions 201 in different accommodating spaces.

[0070] In a specific implementation, the adapter 203 may include a third connection section 2031, a second adapter section 2032, and a fourth connection section 2033 connected in sequence, one end of the third connection section 2031 is connected to the feed section 201 located in one storage space, one end of the fourth connection section 2033 is connected to the feed section 201 located in another storage space, the second adapter section 2032 is located outside the storage space, and the two ends of the second adapter section 2032 are respectively connected to the other end of the third connection section 2031 and the other end of the fourth connection section 2033, so as to realize the connection of the feed section 201 in different storage spaces, and realize the jump of the strip line 200 between different storage spaces, without the need for an additional adapter 203. Specifically, the second adapter section 2032 can be vertically arranged with the third connection section 2031 and the fourth connection section 2033, respectively, and the adapter 203 as a whole can be similar to a U-shaped structure.

[0071] As a possible implementation, the projections of the feeding parts 201 in different accommodation spaces along the second direction may have overlapping parts, so that the strip line 200 can be wound across different accommodation spaces to meet various usage requirements. Since the cavity 100 has multiple sub-cavities and has sufficient layout space, it is relatively easy to wind the strip line 200 without increasing the volume of the phase shifter.

[0072] In a specific implementation, the projection of the feeding part 201 in the same accommodation space along the third direction may also have an overlapping part, so that the strip line 200 can be wound in the same accommodation space. In a specific implementation, the dielectric part 300 may have a notch 301, and in the second direction, the notch 301 and the overlapping part of the feeding part 201 in the same accommodation space along the third direction are staggered, which can be understood as the size of the dielectric part 300 corresponding to the overlapping part along the second direction is larger, or the width is wider, and the size of the dielectric part 300 staggered from the overlapping part along the second direction is smaller, or the width is narrower, so that while ensuring that the dielectric part 300 corresponds to the feeding part 201 in the second direction, the area of ​​the dielectric part 300 can be reduced, the effective utilization rate of the dielectric part 300 can be improved, and the cost can be reduced.

[0073] In the present application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B may be singular or plural. In the text description of the present application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of the present application, the character " / " indicates that the previous and next associated objects are in a "division" relationship. "Including at least one of A, B and C" may mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0074] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

[0075] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed in the present application should be covered within the protection scope of the present application.

Claims

1. A phase shifter, characterized in that: Including cavity and strip line; The cavity comprises a side plate and a plurality of partitions, wherein the plurality of partitions are arranged on the side plate at intervals, and the plurality of partitions and the side plate form at least one accommodating space; The strip line includes a feeding part and an output part, the feeding part is respectively arranged in one or more of the accommodating spaces, and a dielectric part is arranged between the feeding part and the partition corresponding to the accommodating space where the feeding part is located; the output part is connected to the feeding part and extends outside the accommodating space, and the output part is used to be connected to the oscillator unit of the antenna.

2. The phase shifter according to claim 1, characterized in that The output part includes a first connecting section and a first transition section, one end of the first connecting section is connected to the feeding part, the first transition section is located outside the accommodating space, one end of the first transition section is connected to the other end of the first connecting section, and the other end of the first transition section is used to connect to the oscillator unit of the antenna.

3. The phase shifter according to claim 2, characterized in that The output portion further includes a second connecting section, which is located outside the accommodating space, and the other end of the first adapter section is connected to the oscillator unit of the antenna through the second connecting section.

4. The phase shifter according to any one of claims 1 to 3, characterized in that: There are multiple feeding parts, and the multiple feeding parts are arranged in at least one of the accommodating spaces; The strip line further includes a transition portion, and the feeding portions located in different accommodating spaces are connected via the transition portion.

5. The phase shifter according to claim 4, characterized in that The transition section includes a third connecting section, a second transition section and a fourth connecting section which are connected in sequence, one end of the third connecting section is connected to the feeding section located in one of the accommodating spaces, one end of the fourth connecting section is connected to the feeding section located in another of the accommodating spaces, the second transition section is located outside the accommodating space, and two ends of the second transition section are respectively connected to the other end of the third connecting section and the other end of the fourth connecting section.

6. The phase shifter according to claim 4 or 5, characterized in that: There is an overlapping portion in the projections of the feeding parts located in different accommodating spaces along the second direction; the second direction is perpendicular to the first direction, and the first direction is the extension direction of the side plate.

7. The phase shifter according to any one of claims 4 to 6, characterized in that: There is an overlapping part in the projection of the feeding parts located in the same accommodating space along the third direction; the third direction is perpendicular to the first direction and the second direction, the second direction is perpendicular to the first direction, and the first direction is the extension direction of the side plate.

8. The phase shifter according to claim 7, characterized in that The medium portion has a notch, and the notch is arranged offset from the overlapping portion in the second direction.

9. The phase shifter according to any one of claims 1 to 8, characterized in that: The partitions are respectively arranged on both sides of the side plate along the third direction; the third direction is perpendicular to the first direction and the second direction, the second direction is perpendicular to the first direction, and the first direction is the extension direction of the side plate.

10. The phase shifter according to any one of claims 1 to 9, characterized in that: The partition plate is arranged perpendicularly to the side plate.

11. An antenna, characterized in that: It comprises an oscillator unit and a phase shifter as claimed in any one of claims 1 to 10; There are a plurality of vibrator units, and the plurality of vibrator units are arranged along a first direction, and the first direction is an extension direction of the side plate; The balun of each of the vibrator units is fixedly connected to the cavity respectively; The feeder lines of the vibrator units are electrically connected to the feeding part through the output part.

12. The antenna according to claim 11, characterized in that It also includes a reflection plate, wherein the reflection plate and the vibrator unit are respectively arranged on both sides of the phase shifter along a second direction, the reflection plate and the phase shifter are spaced apart, and the second direction is perpendicular to the extension direction of the side plate; or The reflection plate and the vibrator unit are arranged on the same side of the phase shifter along the second direction, and the balun of the vibrator unit passes through the reflection plate.

13. A base station, characterized in that: comprising a signal processing unit and the antenna as claimed in claim 11 or 12; The signal processing unit is electrically connected to the feeding portion so as to be electrically connected to the vibrator unit.

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