WO2021244358A1 - 一种用于基站天线的反射装置和基站天线 - Google Patents

一种用于基站天线的反射装置和基站天线 Download PDF

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Publication number
WO2021244358A1
WO2021244358A1 PCT/CN2021/095908 CN2021095908W WO2021244358A1 WO 2021244358 A1 WO2021244358 A1 WO 2021244358A1 CN 2021095908 W CN2021095908 W CN 2021095908W WO 2021244358 A1 WO2021244358 A1 WO 2021244358A1
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WO
WIPO (PCT)
Prior art keywords
plate
side plate
holes
return
reflection device
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Application number
PCT/CN2021/095908
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English (en)
French (fr)
Inventor
吴文韬
覃芳军
黄文彬
张连红
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP21818982.7A priority Critical patent/EP4152520A4/en
Publication of WO2021244358A1 publication Critical patent/WO2021244358A1/zh
Priority to US18/071,855 priority patent/US20230094536A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H01Q15/18—Reflecting surfaces; Equivalent structures comprising plurality of mutually inclined plane surfaces, e.g. corner reflector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/108—Combination of a dipole with a plane reflecting surface

Definitions

  • the present invention relates to the field of radio communication technology, in particular to a reflection device of a base station antenna.
  • the base station antenna is an important part of the base station, used to transmit or receive electromagnetic waves.
  • the base station antenna mainly includes a reflection device, a radiation unit, and a feeding network.
  • the reflection device is a platform that carries the radiation unit and the feeding network. The size and shape of the reflection device have a significant impact on various performance indicators of the base station antenna, such as radiation performance.
  • the present application provides a reflection device and a base station antenna, which can effectively improve the radiation performance of the antenna.
  • an embodiment of the present application provides a reflection device for a base station antenna, including: a bottom plate, one side of the bottom plate is used for radiating units, and the other side of the bottom plate is used for setting the feeder network;
  • the bottom plate is respectively connected to a first side plate and a second side plate that are disposed oppositely, and the first side plate and the second side plate respectively extend relative to the bottom plate toward a side for setting the feeder network
  • a first back plate connected to the second side plate A second return plate, the second return plate extends in a direction of the feeding network relative to the second side plate.
  • the design of this kind of reflection device can effectively improve the front-to-back ratio in the radiation performance of the base station antenna and the reliability of the reflection performance.
  • the first side plate is provided with a through hole; and/or, along the longitudinal direction of the second side plate, so The second side plate is provided with a through hole; wherein, the longitudinal direction of the first side plate and the second side plate is consistent with the arrangement direction of the radiation unit.
  • a through hole is provided on the first side plate and/or the second side plate, which further improves the front-to-rear ratio performance of the base station antenna.
  • the first return plate is provided with a through hole; and/or, along the longitudinal direction of the second return plate, so The second return plate is provided with through holes; wherein the longitudinal directions of the first return plate and the second return plate are consistent with the direction in which the radiation unit is arranged.
  • Opening through holes on the first back board and/or the second back board further improves the front-to-back ratio performance of the base station antenna.
  • the reflection device further includes: a third side plate and a fourth side plate respectively connected to the bottom plate and disposed opposite to each other, and the third side plate and the fourth side plate are respectively opposite to each other.
  • the bottom plate extends toward the side where the radiation unit is arranged.
  • the arrangement of the third side plate and the fourth side plate can further improve the front-to-rear ratio performance of the base station antenna.
  • a through hole can be opened along the longitudinal direction of the third side plate and/or the fourth side plate, wherein the longitudinal direction of the third side plate and the fourth side plate is the same as that of the fourth side plate.
  • the radiating units are arranged in the same direction. In this way, the front-to-back ratio performance of the base station antenna can be further improved.
  • the value range of the angle ⁇ 1 between the first side plate and the bottom plate toward the feeding network is 0° ⁇ 1 ⁇ 90°
  • the second side plate The value range of the included angle ⁇ 2 with the bottom plate toward the feeder network is 0° ⁇ 2 ⁇ 90°.
  • the included angle ⁇ 1 between the first side plate and the first return plate toward the feeding network has a value range of 0° ⁇ 1 ⁇ 180°;
  • the value range of the included angle ⁇ 2 between the two side plates and the second return plate toward the feeding network is 0° ⁇ 2 ⁇ 180°.
  • the above design improves the design flexibility of the reflection device.
  • the through holes on the first side plate are a plurality of rectangular through holes, and one side of the rectangular through holes along the longitudinal direction of the first side plate is L1, which is perpendicular to L1
  • One side of is w1
  • the distance between the plurality of rectangular through holes is k1, where 0.3 ⁇ L1 ⁇ 0.8 ⁇ , 0.01 ⁇ w1 ⁇ , 0.3 ⁇ k1 ⁇ 0.8 ⁇ , and ⁇ is the radiation unit
  • the working wavelength of the center frequency point in the working frequency band; or, the through holes on the first side plate are multiple serpentine through holes.
  • the through holes on the second side plate are a plurality of rectangular through holes, and one side of the rectangular through holes along the longitudinal direction of the second side plate is L2, which is perpendicular to L1 One side of is w2, and the distance between the plurality of rectangular through holes is k2, where 0.3 ⁇ L2 ⁇ 0.8 ⁇ , 0.01 ⁇ w2 ⁇ , 0.3 ⁇ k2 ⁇ 0.8 ⁇ , and ⁇ is the radiation unit
  • the working wavelength of the center frequency point in the working frequency band; or, the through holes on the second side plate are multiple serpentine through holes.
  • the through holes on the first return plate are a plurality of rectangular through holes, and one side of the rectangular through holes along the longitudinal direction of the first return plate is L3, which is perpendicular to L3 One side of is w3, and the distance between the plurality of rectangular through holes is k3, where 0.3 ⁇ L3 ⁇ 0.8 ⁇ , 0.01 ⁇ w3 ⁇ , 0.3 ⁇ k3 ⁇ 0.8 ⁇ , and ⁇ is the radiation unit
  • the working wavelength of the center frequency point in the working frequency band; or, the through holes on the first backplane are multiple serpentine through holes.
  • the through holes on the second back plate are a plurality of rectangular through holes, and one side of the rectangular through holes along the longitudinal direction of the second back plate is L4, which is perpendicular to L2 One side of is w4, the distance between the plurality of rectangular through holes is k4, where 0.3 ⁇ L2 ⁇ 0.8 ⁇ , 0.01 ⁇ w4 ⁇ , 0.3 ⁇ k4 ⁇ 0.8 ⁇ , and ⁇ is the radiation unit
  • the working wavelength of the center frequency point in the working frequency band; or, the through holes on the second backplane are multiple serpentine through holes.
  • the design of the through hole can present different ways, wherein when the through hole is designed as a serpentine through hole, the resonance size can be equivalently extended, and a wider frequency range can be obtained compared with the rectangular through hole.
  • connection modes of the boards can be selected from one of the following: integral molding, or coupling connection.
  • the coupling connection includes non-metallic contacts and metallic contacts.
  • an embodiment of the present application provides a base station antenna, including a radiating unit, a feeding network, and the first aspect of the present application, and the reflection device in various possible designs of the first aspect.
  • FIG. 1 is an architecture diagram of a communication system provided by an embodiment of this application.
  • FIG. 2 is a schematic structural diagram of a base station antenna provided by an embodiment of the present application.
  • FIG. 3 is a three-dimensional schematic diagram of a base station antenna according to an embodiment of this application.
  • FIG. 4 is a front view of a base station antenna according to an embodiment of this application.
  • Figure 5 is a front view of a side plate provided by an embodiment of the application.
  • Fig. 6 is a front view of a return board provided by an embodiment of the application.
  • FIG. 7 is a schematic diagram of a serpentine linear through hole provided by an application embodiment
  • FIG. 8 is a schematic structural diagram of a base station antenna provided by an application embodiment
  • FIG. 9 is a comparison diagram of the front and back ratio provided by the embodiment of the application.
  • FIG. 1 is a schematic diagram of the architecture of the wireless communication system in an embodiment of the present application.
  • the wireless communication system 10 may include a base station 11 and a terminal device 12.
  • the base station 11 can communicate with the terminal device 12.
  • the base station and terminal equipment included in the wireless communication system as shown in FIG. 1 are only an example.
  • the type and number of network elements further included in the wireless communication system, and the connection relationship between the network elements are not limited thereto.
  • the above-mentioned wireless communication system may be a fourth generation (4G) communication system, such as a long term evolution (LTE) system, a 4.5G communication system, such as an LTE advanced (LTE) system, and a 5G communication system, such as a new An air interface (new radio, NR) system, a system that integrates multiple communication systems, or a communication system that will evolve in the future.
  • 4G fourth generation
  • LTE long term evolution
  • LTE LTE advanced
  • 5G communication system such as a new An air interface (new radio, NR) system, a system that integrates multiple communication systems, or a communication system that will evolve in the future.
  • the base station 11 in FIG. 1 may be a device used on the access network side to support terminal devices to access the wireless communication system.
  • it may be an evolved NodeB (eNB) or 5G access in a 4G access technology communication system.
  • eNB evolved NodeB
  • the next generation base station (next generation NodeB, gNB), transmission reception point (TRP, Transmission Reception Point), relay node (Relay Node), access point (Access Point, AP), etc. in the technical communication system.
  • the terminal device 12 in FIG. 1 may be a device that provides voice or data connectivity to a user, for example, it may also be called a user equipment (UE), a mobile station (mobile station), a subscriber unit (subscriber unit), Station or terminal equipment (Terminal Equipment, TE), etc.
  • the terminal equipment can be a cellular phone, a personal digital assistant (PDA), a wireless modem (modem), a handheld device, a laptop computer, a cordless phone, Wireless local loop (Wireless Local Loop, WLL) station or tablet computer (pad), etc.
  • PDA personal digital assistant
  • modem wireless modem
  • WLL Wireless Local Loop
  • devices that can access the wireless communication system, communicate with the network side of the wireless communication system, or communicate with other devices through the wireless communication system can all be terminal devices in the embodiments of the present application.
  • terminals and cars in smart transportation household equipment in smart homes, power meter reading equipment in smart grids, voltage monitoring equipment, environmental monitoring equipment, video monitoring equipment in smart security networks, cash registers, and so on.
  • the terminal device can communicate with the base station.
  • the terminal equipment can be statically fixed or mobile.
  • the front-to-back ratio is a very important index.
  • FRB is defined as: the ratio of the power density in the forward direction of the base station antenna to the maximum radiation direction power density in the backward direction within ⁇ 30 degrees (°), or the maximum level of the front lobe in the radiation pattern of the base station antenna The ratio to the maximum level of the backlobe.
  • FRB reflects the forward radiation capability of the base station, in other words it is also the ability to suppress backward interference.
  • the FRB ratio determines the directional radiation and/or receiving performance of the base station antenna. For example, the larger the front-to-rear ratio, the smaller the backward radiation of the base station antenna, that is, the higher the forward radiation performance of the base station antenna.
  • the design of the reflection device has a significant impact on the FRB of the base station antenna, and can help improve the FBR of the base station antenna to a certain extent.
  • Fig. 2 is a schematic diagram of the structure of a base station antenna in the prior art.
  • the base station antenna 20 includes a radiating unit 21, a feeding network 22 and a reflection device 23.
  • the reflection device includes a bottom plate 231 and a side plate 232 connected to the bottom plate 231 and extending toward the side of the radiating unit 21.
  • the design of the reflecting device 23 controls the direction of the radiant energy of the radiating unit 21 to a certain extent, reducing the backward radiation.
  • higher requirements are put forward for the front-to-back ratio, which promotes the improvement of the reflection device.
  • the embodiment of the present application proposes a reflection device and a base station antenna including the reflection device, which can effectively help the base station antenna to improve the performance index of the front-to-back ratio.
  • FIG. 3 it is a three-dimensional schematic diagram of a base station antenna according to an embodiment of the application.
  • the base station antenna includes a radiating unit 31, a feeding network 32 and a reflection device 33.
  • the reflection device 33 further includes a bottom plate 331, a side plate 332 connected to the bottom plate 331, and a return plate 333 connected to the side plate 332.
  • the side plate 332 is opposite to the bottom plate 331 toward the extension for setting the feeding network 32.
  • ⁇ 2 The longitudinal direction of the bottom plate 331 is the arrangement direction of the radiation unit 31, as shown in the x-axis direction in FIG. 3.
  • the value ranges of ⁇ 1 and ⁇ 2 are respectively 0° ⁇ 1 ⁇ 90°, 0° ⁇ 2 ⁇ 90°.
  • the bottom plate 331 and the side plate 332 may be connected by integral molding, that is, the bottom plate 331 and the side plate 332 are formed by stamping a metal plate.
  • the bottom plate 331 and the side plate 332 can also be connected by coupling.
  • the bottom plate 331 and the side plate 332 are connected by setting non-metallic parts to form a gap S.
  • the plate 331 and the side plate 332 are connected by rivets.
  • the return plate 333 extends toward the feeding network 32 relative to the side plate 332.
  • there may be two return plates 333 which are respectively connected to the two side plates 332 along the longitudinal direction of the two side plates 332.
  • the angles of the return plate 333 and the side plate 332 toward the feed network 32 are ⁇ 1 and ⁇ 2, respectively.
  • the longitudinal direction of the side plate 332 is the longitudinal direction of the bottom plate 331, that is, the installation direction of the radiation unit 31, as shown in the x-axis direction in FIG. 3.
  • the value ranges of ⁇ 1 and ⁇ 2 are 0° ⁇ 1 ⁇ 180°, and 0° ⁇ 2 ⁇ 180°, respectively.
  • the back plate 333 and the side plate 332 can be connected by integral molding or coupling.
  • the back plate 333 and the side plate 332 can be connected by providing non-metallic components to form a gap S, 0.5 mm ⁇ S ⁇ 0.8 mm, or the return plate 333 and the side plate 332 are connected by rivets.
  • the side plate 332 has a through hole 335 along its longitudinal direction, that is, the x-axis direction.
  • the number of through holes can be multiple.
  • the return plate 333 has a through hole 336 along its longitudinal direction, that is, the x-axis direction.
  • the number of through holes can be multiple.
  • the FBR of the base station antenna can be further improved, and the radiation performance of the antenna can be improved.
  • the reflection device provided by the embodiment of the present application does not need to extend outwards to the width side of the bottom plate (that is, the side perpendicular to the longitudinal direction of the bottom plate) to effectively lift the base station antenna
  • the reliability of the FBR performance and reflection performance of the base station improves the radiation performance of the base station antenna while taking into account the ease of installation of the base station antenna.
  • the width P (based on the y-axis direction) of the bottom plate 331 is 0.05 ⁇ P ⁇ 0.5 ⁇ , where ⁇ is the operating wavelength of the central frequency point in the operating frequency band of the radiation unit 31.
  • the reflecting device 33 further includes a side plate 334 connected to the bottom plate 331.
  • the side plate 334 extends relative to the bottom plate 331 for setting the radiation unit 31.
  • the two side plates 334 and the bottom plate 331 respectively form an included angle of 90°.
  • the configuration of the side plate 334 can further improve the FBR of the base station.
  • the length of the side plate 331 along its own longitudinal direction is the same as the length of the bottom plate 332 along its own longitudinal direction (x-axis direction), and the return plate 333 is along its own longitudinal direction.
  • the length (x-axis direction) corresponds to the length of the side plate 332 along its own longitudinal direction (x-axis direction).
  • the device formed by the bottom plate 331, the side plate 332, and the return plate 333 may be referred to as a return-shaped choke plate.
  • the through holes opened on the side plate 332 and/or the return plate 333 may also be referred to as a choke.
  • the length of the side plate 432 in the y-axis direction (which may be referred to as the height of the side plate 432) is w1.
  • the value range of w1 is 0.01 ⁇ w1 ⁇ .
  • the length of the return plate 433 along the x-axis direction (which may be referred to as the width of the return plate 433) is w4.
  • the value range of w4 can be 0.01 ⁇ w4 ⁇ .
  • FIG. 5 is a front view of the side plate 332 and/or the side plate 432 described in the foregoing embodiment provided by an embodiment of the application. This embodiment may be based on one or more of the above embodiments, in order to introduce the side plate 332 and/or the side plate 432 involved in the foregoing embodiment in more detail.
  • the x-axis direction (the longitudinal direction of the side plate 50) in FIG. 5 is the longitudinal direction of the bottom plate 331 (or the side plate 332) described in the embodiment of FIG. 3, and the radiation unit 51 is arranged along the longitudinal direction.
  • the number of through holes 52 in FIG. 5 is 4. It should be noted that the number of through holes in FIG.
  • the number of through holes on the side plate 50 is the same as the number of radiating units 51 included in the base station antenna, and the center line of the through holes 52 and the center line of the radiating unit 51 may overlap as shown in FIG. 5.
  • the through hole 52 may be a rectangular through hole.
  • One side along the longitudinal direction of the side plate 50 is L1, and the side perpendicular to L1 is w1.
  • the distance between two adjacent through holes is k1, where L1, w1, and k1 can be set as 0.3 ⁇ L1 ⁇ 0.8 ⁇ , 0.01 ⁇ w1 ⁇ , 0.3 ⁇ k1 ⁇ 0.8 ⁇ .
  • the arrangement direction of the through holes 52 is consistent with the x-axis direction (the longitudinal direction of the side plate 50), or in other words, is parallel to one side of the side plate 50 in the longitudinal direction (the x-axis direction).
  • Fig. 6 is a front view of the return plate described in the foregoing embodiment provided by an embodiment of the application. This embodiment may be based on one or more of the above embodiments, in order to introduce the return plate 333 and/or the return plate 433 involved in the foregoing embodiment in more detail.
  • the x-axis direction in FIG. 6 is the longitudinal direction of the bottom plate 331 (or the side plate 332) described in the embodiment of FIG. 3.
  • the return plate 60 is provided with through holes 61, and the number of through holes 62 in FIG. 6 is 4 It should be noted that the number of through holes in FIG. 6 is only used as an example for illustration, and does not cause any restriction on the number of through holes on the side plate of the embodiment of the present application.
  • the number of through holes on the return plate 60 is consistent with the number of through holes included on the side plate 50 of the embodiment in FIG. ) Can intersect with the center line (extended line) of the through hole 52 in the embodiment of FIG. 5, and the value range of the size of the through hole 61 and the distance between two adjacent through holes 61 can be respectively
  • the value range of the size of the through hole 52 in the embodiment of FIG. 5 and the value range of the distance between two adjacent through holes 52 are the same.
  • the size of the through hole 61 and the distance between two adjacent through holes 61 are the same as the size of the through hole 52 in the embodiment of FIG. 5 and the distance between two adjacent through holes 52.
  • the arrangement direction of the through holes 62 is consistent with the x-axis direction (the longitudinal direction of the return plate 60), or in other words, is parallel to one side of the return plate 60 in the longitudinal direction (x-axis direction).
  • the through holes involved in the embodiments of FIG. 5 and FIG. 6 are all examples of rectangular through holes.
  • they can also be serpentine vias.
  • serpentine vias For example, as shown in Fig. 7, it is an implementation of the serpentine via.
  • serpentine line It should be noted that those skilled in the art can understand the meaning of the serpentine line, which is not limited to the implementation manners cited in the embodiments of the present application.
  • the embodiment of this application in FIG. 8 provides a front view of a base station antenna 80 including the above-mentioned reflection device.
  • the base station antenna includes a radiating unit 81, a feeding network 82, and a reflection device.
  • the reflecting device 83 includes a bottom plate 831, a pair of side plates 832 connected to the bottom plate 831, extending toward the feed network 82 relative to the bottom plate 831 and forming an angle of 90° with the bottom plate 831, and the pair of side plates 832 A pair of return plates 833 respectively connected to and extending toward the feeding network 82 relative to the side plate 832 and forming an angle of 90° with the side plate 832 respectively.
  • the reflecting device 83 further includes a pair of side plates 834 connected to the bottom plate 831, extending toward the radiation unit 81 relative to the bottom plate 831, and forming an angle of 90° with the bottom plate 831.
  • the base station antenna in each of the foregoing embodiments operates in a working frequency band of 1695 to 2690 megahertz (MHz).
  • FIG. 9 a comparison diagram of FBR values obtained by performing FBR index tests on the antenna base station shown in FIG. 2 and the antenna base station shown in FIG. 8 using the antenna far-field test system.
  • the horizontal axis represents the operating frequency band of the base station antenna
  • the vertical axis represents the FBR value.
  • the dotted line in the figure is the FBR value of the base station antenna shown in FIG. 2, and the solid line in the figure is the FBR value of the base station antenna shown in FIG. 8.
  • the FBR value of the base station antenna designed by the reflection device in the embodiment of the present application is generally higher than that of the base station antenna used in the prior art in different frequency bands.
  • the front-to-rear ratio can be increased by more than 3 decibels (dB).
  • At least one refers to one or more, and “multiple” refers to two or more.
  • And/or describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an “or” relationship.
  • the following at least one (item) or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • At least one of a, b, or c can mean: a, b, c, a and b, a and c, b and c, or a, b and c, where a, b, c Each of them can be an element or a collection containing one or more elements.
  • equal to can be used in conjunction with greater than, applicable to the technical solution adopted when greater than, and can also be used in conjunction with less than, applicable to the technical solution adopted when equal to and less than, it should be noted that when equal to and greater than are connected When used, do not use with less than; when equal and less than, do not use with greater than.

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Abstract

本申请提供一种反射装置及对应的基站天线，其中反射装置包括：底板，所述底板的一侧用于设置辐射单元、所述底板的另一侧用于设置馈电网络；与所述底板分别连接、相对设置的第一侧板和第二侧板，所述第一侧板和所述第二侧板分别相对于所述底板朝着用于设置所述馈电网络的一侧延伸；与所述第一侧板连接的第一回板，所述第一回板相对于所述第一侧板朝着所述馈电网络方向延伸；以及，与所述第二侧板连接的第二回板，所述第二回板相对于所述第二侧板朝着所述馈电网络方向延伸。通过该种反射装置的设计，可以有效提高基站天线辐射性能。

Description

一种用于基站天线的反射装置和基站天线 技术领域
本发明涉及无线电通信技术领域，尤其涉及的是一种基站天线的反射装置。
背景技术
基站天线是基站的重要组成部分，用于发射或者接收电磁波。基站天线主要包括：反射装置、辐射单元以及馈电网络，反射装置是承载辐射单元和馈电网络的平台。反射装置的尺寸和形状对基站天线的各种性能指标，如辐射性能，具有重大影响。
因此，如何设计反射装置以提高基站天线的性能指标是亟需解决的问题。
发明内容
本申请提供了一种反射装置和基站天线，能有效提高天线的辐射性能。
第一方面，本申请实施例提供一种用于基站天线的反射装置，包括：底板，所述底板的一侧用于设置辐射单元、所述底板的另一侧用于设置馈电网络；所述底板分别连接、相对设置的第一侧板和第二侧板，所述第一侧板和所述第二侧板分别相对于所述底板朝着用于设置所述馈电网络的一侧延伸；与所述第一侧板连接的第一回板，所述第一回板相对于所述第一侧板朝着所述馈电网络方向延伸；以及，与所述第二侧板连接的第二回板，所述第二回板相对于所述第二侧板朝着所述馈电网络方向延伸。
该种反射装置的设计，可有效提升基站天线的辐射性能中的前后比和反射性能的可靠性。
在一种可能的设计中，沿着所述第一侧板的纵长方向，所述第一侧板开有通孔；和/或，沿着所述第二侧板的纵长方向，所述第二侧板开有通孔；其中，所述第一侧板和第二侧板的纵长方向与所述辐射单元设置方向一致。
在第一侧板和/或第二侧板上开设通孔，进一步提高了基站天线的前后比性能。
在一种可能的设计中，沿着所述第一回板的纵长方向，所述第一回板开有通孔；和/或，沿着所述第二回板的纵长方向，所述第二回板开有通孔；其中，所述第一回板和所述第二回板的纵长方向与所述辐射单元设置的方向一致。
在第一回板和/或第二回板上开设通孔，进一步提高了基站天线的前后比性能。
在一种可能的设计中，所述反射装置还包括：与所述底板分别连接、相对设置的第三侧板和第四侧板，所述第三侧板和所述第四侧板分别相对于所述底板朝着用于设置所述辐射单元的一侧延伸。
第三侧板和第四侧板的设置可以进一步提高基站天线的前后比性能。
在一种可能的设计中，可以沿着第三侧板和/或第四侧板的纵长方向开设通孔，其中，所述第三侧板和所述第四侧板的纵长方向与所述辐射单元设置的方向一致。如此可以进一步提高了基站天线的前后比性能。
在一种可能的设计中，所述第一侧板与所述底板之间朝着所述馈电网络的夹角θ1的取值 范围为0°＜θ1≤90°，所述第二侧板与所述底板之间朝着所述馈电网络的夹角θ2的取值范围为0°＜θ2≤90°。如此保证了底板的宽度不会(与辐射单元的设置方向相垂直的一边的长度)增加，在提高基站天线反射性能的同时，兼顾了基站天线安装时的便捷性和基站天线的重量问题。
在一种可能的设计中，所述第一侧板与所述第一回板之间朝着所述馈电网络的夹角β1的取值范围为0°＜β1＜180°；所述第二侧板与所述第二回板之间朝着所述馈电网络的夹角β2的取值范围为0°＜β2＜180°。
以上的设计提高了反射装置设计的灵活性。
在一种可能的设计中，所述第一侧板上的通孔为多个矩形通孔，所述矩形通孔沿着所述第一侧板的纵长方向的一边为L1,与L1垂直的一边为w1,所述多个矩形通孔之间的距离为k1,其中，0.3λ≤L1≤0.8λ，0.01λ≤w1≤λ，0.3λ≤k1≤0.8λ，λ为所述辐射单元工作频段内中心频点的工作波长；或者，所述第一侧板上的通孔为多个蛇形线通孔。
在一种可能的设计中，所述第二侧板上的通孔为多个矩形通孔，所述矩形通孔沿着所述第二侧板的纵长方向的一边为L2,与L1垂直的一边为w2,所述多个矩形通孔之间的距离为k2,其中，0.3λ≤L2≤0.8λ，0.01λ≤w2≤λ，0.3λ≤k2≤0.8λ，λ为所述辐射单元工作频段内中心频点的工作波长；或者，所述第二侧板上的通孔为多个蛇形线通孔。
在一种可能的设计中，所述第一回板上的通孔为多个矩形通孔，所述矩形通孔沿着所述第一回板的纵长方向的一边为L3,与L3垂直的一边为w3,所述多个矩形通孔之间的距离为k3,其中，0.3λ≤L3≤0.8λ，0.01λ≤w3≤λ，0.3λ≤k3≤0.8λ，λ为所述辐射单元工作频段内中心频点的工作波长；或者，所述第一回板上的通孔为多个蛇形线通孔。
在一种可能的设计中，所述第二回板上的通孔为多个矩形通孔，所述矩形通孔沿着所述第二回板的纵长方向的一边为L4,与L2垂直的一边为w4,所述多个矩形通孔之间的距离为k4,其中，0.3λ≤L2≤0.8λ，0.01λ≤w4≤λ，0.3λ≤k4≤0.8λ，λ为所述辐射单元工作频段内中心频点的工作波长；或者，所述第二回板上的通孔为多个蛇形线通孔。
通孔的设计可以呈现不同的方式，其中，当所述通孔设计为蛇形线通孔时，既可以等效延长谐振尺寸，又可以获得相比于矩形通孔更宽的频段范围。
在一种可能的设计中，所述底板与所述第一侧板、所述底板与第二侧板，所述第一侧板与第一回板，所述第二侧板与第二回板的连接方式，分别可以选取如下中的一种：一体成型，或者耦合连接。其中耦合连接包括非金属接触和金属接触。
第二方面，本申请实施例提供了一种基站天线，包括辐射单元、馈电网络和本申请第一方面，以及第一方面各种可能的设计中的反射装置。
应当理解的是，本申请的第二方面各中可能设计对应的可行实施方式所取得的有益效果相似，不再赘述。
附图说明
图1为本申请实施例提供的一种通信系统的架构图；
图2为本本申请实施例提供的一种基站天线的结构示意图；
图3为本申请实施例一种基站天线的立体示意图；
图4为本申请实施例一种基站天线的正视图；
图5为本申请实施例提供的一种侧板的正视图；
图6为本申请实施例提供的一种回板的正视图；
图7为申请实施例提供的一种蛇线性通孔的示意图；
图8为申请实施例提供的一种基站天线的结构示意图；
图9为本申请实施例提供的一种前后比值对比图。
具体实施方式
本申请实施例提供一种无线通信系统，图1为本申请实施例中的无线通信系统的架构示意图，参见图1所示，该无线通信系统10可以包括基站11和终端设备12。基站11可以与终端设备12进行通信。需要说明的是，在如图1的无线通信系统所包含的基站和终端设备仅是一种示例。在本申请实施例中，无线通信系统还包含的网元的类型、数量，以及网元之间的连接关系不限于此。
上述无线通信系统可以为第四代(4th generation，4G)通信系统，例如长期演进(long term evolution，LTE)系统，4.5G通信系统，例如高级LTE(LTE advanced)系统，5G通信系统，例如新空口(new radio,NR)系统，多种通信系统融合的系统，或者未来演进的通信系统。
图1中的基站11可以是接入网侧用于支持终端设备接入无线通信系统的设备，例如，可以是4G接入技术通信系统中的演进型基站(evolved NodeB,eNB)、5G接入技术通信系统中的下一代基站(next generation NodeB，gNB)、发送接收点(TRP，Transmission Reception Point)、中继节点(Relay Node)、接入点(Access Point，AP)等。
图1中的终端设备12可以是一种向用户提供语音或者数据连通性的设备，例如也可以称为用户设备(user equipment，UE)、移动台(mobile station)、用户单元(subscriber unit)、站台(station)或者终端设备(Terminal Equipment，TE)等。终端设备可以为蜂窝电话(cellular phone)、个人数字助理(Personal Digital Assistant，PDA)、无线调制解调器(modem)、手持设备(handheld)、膝上型电脑(laptop computer)、无绳电话(cordless phone)、无线本地环路(Wireless Local Loop，WLL)台或者平板电脑(pad)等。随着无线通信技术的发展，可以接入无线通信系统、可以与无线通信系统的网络侧进行通信，或者通过无线通信系统与其它设备进行通信的设备都可以是本申请实施例中的终端设备，譬如，智能交通中的终端和汽车、智能家居中的家用设备、智能电网中的电力抄表仪器、电压监测仪器、环境监测仪器、智能安全网络中的视频监控仪器、收款机等等。在本申请实施例中，终端设备可以与基站进行通信。终端设备可以是静态固定的，也可以是移动的。
在基站天线的辐射性能指标中，前后比(Front-to-Back Ratio，FBR)是一个非常重要的指标。FRB的定义为：基站天线前向最大辐射方向的功率密度与后向±30度(°)范围内的最大辐射方向功率密度的比值，或者，基站天线的辐射方向图中，前瓣最大电平与后瓣最大电平的比值。FRB反映了基站的前向辐射能力，换句话说也是对后向干扰的抑制能力。FRB比的大小决定基站天线的定向辐射和/或接收性能的好坏。例如，前后比越大，基站天线的后向辐射越小，也即基站天线的前向辐射性能越高。反射装置的设计对于基站天线的FRB有着重大的影响，可以帮助在一定程度上提高基站天线的FBR。
图2为一种现有技术中基站天线的结构示意图。图2中，基站天线20包括辐射单元21、馈电网络22以及反射装置23，其中反射装置包括底板231和与底板231相连接、向着辐射单元21一侧延伸的侧板232。反射装置23的设计在一定程度上控制辐射单元21的辐射能的方向，减少了后向辐射。但是，随着无线通信技术的发展，为了获得更好的小区信号覆盖，对前后比提出了更高的要求，这促使对反射装置进行改进。
本申请实施例提出一种反射装置和包括该反射装置的基站天线，可以有效帮助基站天线提高前后比的性能指标。
如图3所示，为本申请实施例一种基站天线的立体示意图，该基站天线包括辐射单元31、馈电网络32以及反射装置33。其中，反射装置33进一步包括：底板331，与底板331连接的侧板332，与侧板332连接的回板333。
侧板332相对于底板331朝着用于设置所述馈电网络32的延伸。在一种实现方式中，侧板332可以为两个，沿着底板331的纵长方向的两边相对(即面对面的)设置、分别与底板331朝着馈电网络32的一侧形成夹角θ1和θ2。底板331的纵长方向是辐射单元31的设置方向，如图3中的x轴方向。θ1和θ2的取值范围分别为0°＜θ1≤90°，0°＜θ2≤90°。底板331与侧板332可以通过一体成型的方式连接，即，底板331与侧板332通过一块金属板冲压形成。底板331与侧板332还可以通过耦合的方式连接，例如，底板331与侧板332间通过设置非金属部件的方式连接，形成间隙S，可选的，0.5毫米≤S≤0.8毫米，或者回板331与侧板332通过打铆钉的方式连接。
回板333相对于侧板332朝着馈电网络32方向延伸。在一种实现方式中，回板333可以为两个，分别沿着两个侧板332的纵长方向与两个侧板332连接。回板333和侧板332朝着馈电网络32的夹角分别为β1和β2。侧板332的纵长方向即为底板331的纵长方向，也即为是辐射单元31的设置方向、如图3中的x轴方向。β1和β2的取值范围分别是0°＜β1＜180°，0°＜β2＜180°。回板333与侧板332可以通过一体成型的方式连接、或者通过耦合的方式连接，例如，回板333与侧板332间通过设置有非金属部件的方式连接，形成间隙S，0.5毫米≤S≤0.8毫米，或者回板333与侧板332通过打铆钉的方式连接。
在一种实现方式中，侧板332沿着自身纵长方向，即x轴方向，开有通孔335。通孔的个数可以是多个。
在一种实现方式中，回板333沿着自身纵长方向，即x轴方向，开有通孔336。通孔的个数可以是多个。
通过在侧板332和/或回板333的上开设通孔，可以进一步提高基站天线的FBR，提高天线的辐射性能。
通过本申请实施例设置的反射装置，相对于现有技术中的反射装置，反射装置无需针对底板的宽度一边(即与底板的纵向方向相垂直的一边)向外延伸，即可有效提升基站天线的FBR性能和反射性能的可靠性，这在提高基站天线辐射性能的同时兼顾了对基站天线安装的便捷性。
在一种实现方式中，底板331的宽度P(基于y轴方向)为0.05λ≤P≤0.5λ，其中λ为所述辐射单元31工作频段内中心频点的工作波长。
在一种实现方式中，所述反射装置33还包括与底板331连接的侧板334，侧板334相对于底板331朝着用于设置辐射单元31的延伸，侧板334为两个，沿着底板331的纵长方向的 两边相对设置，例如，两个侧板334与底板331分别形成90°的夹角。
侧板334的设置可以进一步提高基站的FBR。
在一种实现方式中，侧板331沿着自身纵长方向(x轴方向)的长度与底板332沿着自身纵长方向(x轴方向)的长度一致、回板333沿着自身纵长方向(x轴方向)的长度与侧板332沿着自身纵长方向(x轴方向)的长度一致。
需要说明的是底板331、侧板332和回板333构成的装置可以称为回形扼流板。侧板332和/或回板333上所开的通孔，又可以称为扼流缝。
图4是本申请实施例一种基站天线的正视图，该实施例可以基于图3的实施例。进一步的，可以看到，此时θ1＝θ2＝90°，也即底板431和侧板432之间形成直角；β1＝β2＝90°，也即侧板432与回板433之间形成直角。侧板432沿y轴方向的长度(可以称为侧板432的高度)为w1。可选的，w1的取值范围是0.01λ≤w1≤λ。回板433沿着x轴方向的长度(可以称为回板433的宽度)为w4。可选的，w4的取值范围可以是0.01λ≤w4≤λ。
图5为本申请实施例提供的一种前述实施例中所述的侧板332和/或侧板432的正视图。该实施例可以基于以上一种或多种实施例，为了对前述实施例中涉及的侧板332和/或侧板432进行更详细的介绍。图5中x轴方向(侧板50的纵长方向)即为图3实施例所述的底板331(或者侧板332)纵长方向，辐射单元51沿着该纵长方向设置。图5中通孔52的个数为4个，需要说明的是图5中通孔的个数只是为了用于示意的举例，不造成对本申请实施例侧板上通孔个数的任何限制。可选的，侧板50上通孔的个数与该基站天线中包括的辐射单元51的个数相同，通孔52的中心线与辐射单元51的中心线可以如图5所示重叠。通孔52可以是矩形通孔，其沿着所述侧板50的纵长方向的一边为L1，与L1垂直的一边为w1,相邻的两个通孔之间的距离(也即这两个通孔的中心线之间的距离)均为k1,其中，L1、w1、k1可以设置为0.3λ≤L1≤0.8λ，0.01λ≤w1≤λ，0.3λ≤k1≤0.8λ。可选的，通孔52的排列方向与x轴方向(侧板50的纵长方向)一致，或者说，与侧板50沿纵长方向(x轴方向)的一边平行。
图6为本申请实施例提供的一种前述实施例中所述的回板的正视图。该实施例可以基于以上一种或多种实施例，为了对前述实施例中涉及的回板333和/或回板433进行更详细的介绍。图6中x轴方向即为图3实施例所述的底板331(或者侧板332)的纵长方向，回板60上设置有通孔61，图6中通孔62的个数为4个，需要说明的是图6中通孔的个数只是为了用于示意的举例，不造成对本申请实施例侧板上通孔个数的任何限制。可选的，回板60上通孔的个数与图5实施例侧板50上包括的通孔个数保持一致，通孔61可以是矩形通孔，通孔61的中心线(的延长线)可以和图5实施例中通孔52的中心线(的延长线)相交，通孔61的尺寸的取值范围、相邻的两个通孔61之间的距离的取值范围可以分别与图5实施例的通孔52的尺寸的取值范围、相邻的两个通孔52之间的距离的取值范围相同。在一种实现方式中通孔61的尺寸与相邻的两个通孔61之间的距离分别与图5实施例的通孔52的尺寸、相邻的两个通孔52之间的距离一致。可选的，通孔62的排列方向与x轴方向(回板60的纵长方向)一致，或者说，与回板60沿纵长方向(x轴方向)的一边平行。
图5和图6实施例中所涉及的通孔均示例的为矩形通孔。可选的，它们还可以为蛇形线通孔。例如如图7所示，为蛇形线通孔的一种实现方式。需要说明的是，本领域技术人员能够理解蛇形线的含义，其不局限于本申请实施例中所举的实现方式。当采用蛇形线通孔时， 既可以等效延长谐振尺寸，又可以获得相比于矩形通孔更宽的频段范围。
基于图5至图7的实施例，图8本申请实施例提供一种包括上述提及的反射装置的基站天线80的正示图，所述基站天线包括辐射单元81、馈电网络82和反射装置83，所述反射装置83包括底板831，与底板831连接、相对于底板831朝着馈电网络82延伸并与底板831呈90°夹角的一对侧板832，与该对侧板832分别连接、分别相对于侧板832朝着馈电网络82延伸并分别与侧板832呈90°夹角的一对回板833。所述反射装置83还包括与底板831连接、相对于底板831朝着辐射单元81延伸并与底板831呈90°夹角的一对侧板834。
可选的，上述各个实施例中所述基站天线工作在1695至2690兆赫兹(MHz)的工作频段。
如图9所示，利用天线远场测试系统对图2所示的天线基站和图8所示的天线基站分别进行FBR指标测试获得的FBR值的对比图。图9中，横轴表示基站天线的工作频段，纵轴表示FBR值。图中虚线为图2所示的基站天线的FBR值，而图中实线为图8所示的基站天线的FBR值。从图中可见，本发申请实施例反射装置设计的的基站天线的FBR值在不同频段上普遍要高于现有技术中采用的基站天线。特别的，在1695至2690MHz的工作频段，可以将前后比提升3分贝(dB)以上。
在上述实施例中，对各个实施例的描述各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
需要说明的是，本申请实施例中“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A、B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一(项)个”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a、b或c中的至少一项(个)，可以表示：a，b，c，a和b，a和c，b和c，或a、b和c，其中a、b、c中的每一个本身可以是元素，也可以是包含一个或多个元素的集合。
在本申请实施例中，“示例的”“在一些实施例中”“在另一实施例中”“作为一种实现方式”等用于表示作例子、例证或说明。本申请中被描述为“示例”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用示例的一词旨在以具体方式呈现概念。本申请实施例中涉及的“第一”、“第二”等词汇，仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。本申请实施例中涉及的等于可以与大于连用，适用于大于时所采用的技术方案，也可以与小于连用，适用于与小于时所采用的技术方案，需要说明的是，当等于与大于连用时，不与小于连用；当等于与小于连用时，不与大于连用。
本申请实施例中涉及的所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (14)

  1. 一种用于基站天线的反射装置，其特征在于，包括：
    底板，所述底板的一侧用于设置辐射单元、所述底板的另一侧用于设置馈电网络；
    与所述底板分别连接、相对设置的第一侧板和第二侧板，所述第一侧板和所述第二侧板分别相对于所述底板朝着用于设置所述馈电网络的一侧延伸；
    与所述第一侧板连接的第一回板，所述第一回板相对于所述第一侧板朝着所述馈电网络方向延伸；以及，
    与所述第二侧板连接的第二回板，所述第二回板相对于所述第二侧板朝着所述馈电网络方向延伸。
  2. 如权利要求1所述的反射装置，其特征在于，沿着所述第一侧板的纵长方向，所述第一侧板开有通孔；和/或，
    沿着所述第二侧板的纵长方向，所述第二侧板开有通孔；
    其中，所述第一侧板和第二侧板的纵长方向与所述辐射单元设置方向一致。
  3. 如权利要求1或者2所述的反射装置，其特征在于，沿着所述第一回板的纵长方向，所述第一回板开有通孔；和/或，
    沿着所述第二回板的纵长方向，所述第二回板开有通孔；
    其中，所述第一回板和所述第二回板的纵长方向与所述辐射单元设置的方向一致。
  4. 如权利要求1至3任一所述的反射装置，其特征在于，所述反射装置还包括：与所述底板分别连接、相对设置的第三侧板和第四侧板，所述第三侧板和所述第四侧板分别相对于所述底板朝着用于设置所述辐射单元的一侧延伸。
  5. 如权利要求1至4任一所述的反射装置，其特征在于，所述第一侧板与所述底板之间朝着所述馈电网络的夹角θ1的取值范围为0°＜θ1≤90°，所述第二侧板与所述底板之间朝着所述馈电网络的夹角θ2的取值范围为0°＜θ2≤90°。
  6. 如权利要求1至5任一所述的反射装置，其特征在于，所述第一侧板与所述第一回板之间朝着所述馈电网络的夹角β1的取值范围为0°＜β1＜180°；所述第二侧板与所述第二回板之间朝着所述馈电网络的夹角β2的取值范围为0°＜β2＜180°。
  7. 如权利要求2至6任一所述的反射装置，其特征在于，所述第一侧板上的通孔为多个矩形通孔，所述矩形通孔沿着所述第一侧板的纵长方向的一边为L1,与L1垂直的一边为w1,所述多个矩形通孔之间的距离为k1,其中，0.3λ≤L1≤0.8λ，0.01λ≤w1≤λ，0.3λ≤k1≤0.8λ，λ为所述辐射单元工作频段内中心频点的工作波长；或者，
    所述第一侧板上的通孔为多个蛇形线通孔。
  8. 如权利要求2至7任一所述的反射装置，其特征在于，所述第二侧板上的通孔为多个矩形通孔，所述矩形通孔沿着所述第二侧板的纵长方向的一边为L2,与L1垂直的一边为w2,所述多个矩形通孔之间的距离为k2,其中，0.3λ≤L2≤0.8λ，0.01λ≤w2≤λ，0.3λ≤k2≤0.8λ，λ为所述辐射单元工作频段内中心频点的工作波长；或者，
    所述第二侧板上的通孔为多个蛇形线通孔。
  9. 如权利要求3至8任一所述的反射装置，其特征在于，所述第一回板上的通孔为多个 矩形通孔，所述矩形通孔沿着所述第一回板的纵长方向的一边为L3,与L3垂直的一边为w3,所述多个矩形通孔之间的距离为k3,其中，0.3λ≤L3≤0.8λ，0.01λ≤w3≤λ，0.3λ≤k3≤0.8λ，λ为所述辐射单元工作频段内中心频点的工作波长；或者，
    所述第一回板上的通孔为多个蛇形线通孔。
  10. 如权利要求3至9任一所述的反射装置，其特征在于，所述第二回板上的通孔为多个矩形通孔，所述矩形通孔沿着所述第二回板的纵长方向的一边为L4,与L2垂直的一边为w4,所述多个矩形通孔之间的距离为k4,其中，0.3λ≤L2≤0.8λ，0.01λ≤w4≤λ，0.3λ≤k4≤0.8λ，λ为所述辐射单元工作频段内中心频点的工作波长；或者，
    所述第二回板上的通孔为多个蛇形线通孔。
  11. 如权利要求1至10任一所述的反射装置，其特征在于，所述底板与所述第一侧板一体成型，或者所述底板与所述第一侧板耦合连接；所述第一侧板与所述第一回板一体成型，或者所述第一侧板与所述回板耦合连接。
  12. 如权利要求1至11任一所述的反射装置，其特征在于，所述底板与所述第二侧板一体成型，或者所述底板与所述第二侧板耦合连接；所述第二侧板与所述第二回板一体成型，或者所述第二侧板与所述第二回板耦合连接。
  13. 如权利要求11或者12所述的反射装置，其特征在于，所述耦合连接包括非金属接触或者金属接触。
  14. 一种基站天线，其特征在于，包括辐射单元、馈电网络和如权利要求1至13任一所述的反射装置。
PCT/CN2021/095908 2020-06-01 2021-05-26 一种用于基站天线的反射装置和基站天线 WO2021244358A1 (zh)

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