WO2020249078A1 - 全向室分mimo天线 - Google Patents

全向室分mimo天线 Download PDF

Info

Publication number
WO2020249078A1
WO2020249078A1 PCT/CN2020/095792 CN2020095792W WO2020249078A1 WO 2020249078 A1 WO2020249078 A1 WO 2020249078A1 CN 2020095792 W CN2020095792 W CN 2020095792W WO 2020249078 A1 WO2020249078 A1 WO 2020249078A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna unit
polarized antenna
omnidirectional
floor
mimo antenna
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/095792
Other languages
English (en)
French (fr)
Inventor
高峰
朱文涛
刘嘉麟
孟宪锟
邱钧
王丽芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Mobile Communications Group Co Ltd
China Mobile Group Design Institute Co Ltd
Original Assignee
China Mobile Communications Group Co Ltd
China Mobile Group Design Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Mobile Communications Group Co Ltd, China Mobile Group Design Institute Co Ltd filed Critical China Mobile Communications Group Co Ltd
Publication of WO2020249078A1 publication Critical patent/WO2020249078A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to an omnidirectional room division MIMO antenna.
  • MIMO multiple-input multiple-output
  • MIMO technology requires the use of multi-antenna technology at both the transmitting and receiving ends of the system, the use of multiple antennas or antennas with multiple polarization modes for signal transmission and reception, and the use of space resources and the multipath of wireless channels to establish parallel
  • the transmission channel realizes the communication mode of multiple receiving and multiple sending.
  • MIMO technology can greatly increase channel capacity, increase spectrum utilization, eliminate polarization mismatch, increase diversity gain, and has obvious performance advantages.
  • the indoor electromagnetic environment is intricate and complex, and multiple communication systems coexist, such as the global mobile communication system, Multiple systems such as distributed control system, time division-synchronous code division multiple access, TD-LTE and wireless local area network coexist, and the problem of interference between multiple systems has become increasingly prominent.
  • MIMO technology is also an effective technical way to solve these problems.
  • the embodiments of the present disclosure provide an omnidirectional room division MIMO antenna, so as to realize good MIMO radiation performance while reducing the height of the antenna.
  • the embodiments of the present disclosure provide an omnidirectional indoor multiple input multiple output MIMO antenna, and the omnidirectional indoor multiple output MIMO antenna includes:
  • the vertically polarized antenna unit includes three centrally symmetrical and vertically arranged radiation patches, a circular coupling patch and a coupling ring, wherein the circular coupling patch is provided on the top of the three radiating patches, and the coupling The ring is fixed on the floor, and the bottoms of the three radiating patches are located inside the coupling ring and fixed on the floor;
  • the horizontally polarized antenna unit includes multiple sets of dipoles arranged symmetrically in the center and connected to each Set of printing power dividers corresponding to the set of dipoles, and the dipoles are printed on the first plate surface of the ring-shaped medium, and the printing power divider is printed on the first plate surface of the ring-shaped medium opposite to the first plate surface.
  • the annular medium is vertically fixed on the circular coupling patch by a plurality of bolts.
  • the vertically polarized antenna unit further includes three metal short-circuit patches, wherein one end of the three metal short-circuit patches is connected to the edge of the circular coupling patch, and the three metal short-circuit patches The other end of the short-circuit patch is fixed on the floor.
  • the vertically polarized antenna unit further includes an inverted cone feeding structure, wherein the tip of the inverted cone feeding structure is fixed on the floor, and the bottoms of the three radiation patches are all connected to the The flat ends of the inverted cone feeding structure are connected, and the tip of the inverted cone feeding structure is connected to a first N-type joint located under the floor through a cable.
  • the horizontally polarized antenna unit further includes parasitic stubs respectively arranged corresponding to each group of dipoles, wherein the parasitic stubs are arranged at the edge position of the second plate surface of the annular medium.
  • the horizontally polarized antenna unit further includes a feeding point arranged on the annular medium, wherein the feeding point is connected to a second N-type joint located under the floor through a cable.
  • the working bandwidth of the vertically polarized antenna unit is 0.86 GHz-5.62 GHz
  • the working bandwidth of the horizontally polarized antenna unit is 1.62 GHz-2.71 GHz.
  • the height of the vertically polarized antenna unit is 56 mm, and the total height of the omnidirectional indoor MIMO antenna is 79 mm.
  • the material of the annular medium is FR4, the thickness is 1.5 mm, the relative dielectric constant is 4.4, and the loss tangent is 0.02.
  • the omnidirectional room division MIMO antenna includes a vertically polarized antenna unit and a horizontally polarized antenna unit, wherein the top of the three radiating patches in the vertically polarized antenna unit is provided with a circular coupling patch, and the three The bottom of each radiating patch is arranged inside the coupling ring fixed on the floor, and the horizontally polarized antenna unit includes a plurality of sets of dipoles arranged symmetrically in the center and a printed power divider corresponding to each set of dipoles, and The dipole and the printing power divider are respectively printed on the two plate surfaces of the ring-shaped medium.
  • the ring-shaped medium is vertically fixed to the circular coupling patch by a plurality of bolts.
  • Coupling patch and coupling loop reduce the height of the MIMO antenna, expand the antenna bandwidth, and realize the combination of the horizontally polarized antenna unit with a dipole and a printed power divider on the two plates of the ring medium to expand the horizontally polarized antenna Bandwidth, and make the vertical polarization antenna unit and the horizontal polarization antenna unit have good omnidirectional radiation performance on the horizontal plane.
  • FIG. 1 is a schematic structural diagram of a vertically polarized antenna unit in an embodiment of the disclosure
  • FIG. 2 is a schematic structural diagram of a horizontally polarized antenna unit in an embodiment of the disclosure
  • FIG. 3 is a schematic diagram of a cross-sectional structure of an omnidirectional MIMO antenna in an embodiment of the disclosure
  • FIG. 4 is a comparison diagram of the return loss curves of the vertically polarized antenna unit and other different vertically polarized antenna units in the embodiments of the disclosure;
  • FIG. 5 is a graph of the return loss curve and the isolation between ports of the horizontally polarized antenna unit in an embodiment of the disclosure.
  • MIMO technology is an effective technical approach to effectively solve the interference problem between multiple systems, and it can greatly increase channel capacity, increase spectrum utilization, eliminate polarization mismatch, and increase diversity gain. It has obvious performance advantages, but due to Most indoor MIMO antennas are installed in indoor environments. Therefore, how to achieve harmony between the antenna and the indoor environment, reduce the profile height of the antenna, and at the same time make the antenna have good radiation performance, is the key to the research of indoor antennas.
  • this embodiment provides an omnidirectional indoor MIMO antenna.
  • embodiments of the present disclosure provide an omnidirectional indoor MIMO antenna, and the omnidirectional indoor MIMO antenna includes:
  • the vertically polarized antenna unit includes three centrally symmetrical and vertically arranged radiating patches 11, a circular coupling patch 12 and a coupling ring 13, wherein the circular coupling patches 12 are arranged on the three radiating patches 11 At the top, the coupling ring 13 is fixed on the floor 14, and the bottoms of the three radiation patches 11 are located inside the coupling ring 13 and fixed on the floor 14; the horizontally polarized antenna unit includes multiple sets of centers Symmetrically arranged dipoles 21 and a printing power divider 22 respectively corresponding to each group of dipoles 21, and the dipoles 21 are printed on the first plate surface of the ring-shaped medium 23, the printing power divider 22 is printed on the second plate surface of the annular medium 23 opposite to the first plate surface.
  • the annular medium 23 is vertically fixed to the circular coupling patch 12 by a plurality of bolts 3.
  • the three radiating patches 11 included in the vertically polarized antenna unit are arranged symmetrically and 120 degrees apart from each other, and the radiating patches 11 may be triangular in shape, and are arranged at the tops of the three radiating patches 11
  • the omnidirectional room-divided MIMO antenna is improved by setting a coupling loop at the bottom of the three radiation patches.
  • the impedance matching state in the high frequency band in addition, based on the three radiating patches, the outer contours are triangular, and the current is mainly distributed along the outer contour edges of the radiating patches, which makes the radiation principle of the vertically polarized antenna unit equivalent For single cone antenna or monopole antenna.
  • a plurality of sets of dipoles 21 arranged in a center symmetry are arranged on the first plate surface of the ring medium 23.
  • the first plate surface 5 groups of symmetrically arranged dipoles 21 (referring to the T-shaped structure on the reverse side of the ring medium indicated by 21 in Fig. 2) can be provided on the opposite side of the ring medium in Fig. 2.
  • the second side of the ring medium 23 Five sets of printing power dividers 22 (referring to the U-shaped structure on the front side of the ring medium indicated by 22 in Figure 2) are arranged on the two plate surfaces (the front side of the ring medium in FIG.
  • Each group of the device 22 is arranged opposite to each group of the 5 groups of dipoles, so that the 5-way printed power divider can provide the 5 groups of dipoles with equal amplitude and in-phase feed, so as to obtain a full range of power in the horizontal plane. Radiation pattern.
  • the annular medium 23 is vertically fixed to the circular coupling patch 22 by a plurality of bolts 3, that is, the horizontally polarized antenna unit is vertically fixed directly above the vertically polarized antenna unit by a plurality of bolts.
  • the number of the multiple bolts may be three.
  • the radiating patch is arranged in the vertically polarized antenna unit, and the circular coupling patch and the coupling ring are respectively arranged on the top and bottom of the radiating patch, which expands the antenna bandwidth and reduces the vertical polarization antenna Height, thereby reducing the overall height of the MIMO antenna; in addition, by arranging dipoles and printed power dividers on the two plates of the loop medium in the horizontally polarized antenna unit, the bandwidth of the horizontally polarized antenna unit is expanded, In addition, the vertically polarized antenna unit and the horizontally polarized antenna unit both have good omnidirectional radiation performance on the horizontal plane.
  • the vertically polarized antenna unit further includes three metal short-circuit patches 15, wherein one end of the three metal short-circuit patches 15 is connected to the circular coupling patch 12 The edges of the three metal short-circuit patches 15 are all fixed on the floor 14.
  • the three metal short-circuit patches 15 can be fixed on the edge of the circular coupling patch 12 at an interval of 120 degrees to improve the stability of the circular coupling patch when fixed on the floor by the three metal short-circuit patches .
  • the vertically polarized antenna unit further includes an inverted cone-shaped feeding structure 16, wherein the tip portion of the inverted-cone feeding structure 16 is fixed on the floor 14, and the three The bottom of the radiating patch 11 is connected to the flat end of the inverted cone feeding structure 16, and the tip of the inverted cone feeding structure 16 is connected to the first N-type connector 17 under the floor 14 through a cable. connection.
  • the vertically polarized antenna unit is excited by an inverted cone-shaped feeding structure.
  • the upper end of the inverted-cone feeding structure 16 is a circular flat end and the lower end is a tip.
  • the cable may be a standard coaxial cable with a characteristic impedance of 50 ohms.
  • the bottoms of the three radiating patches 11 are fixed on the floor 14 through the inverted cone-shaped feeding structure 16, that is, the planar end (that is, the upper end) of the inverted cone-shaped feeding structure 16 and the three radiating patches
  • the bottom of the sheet 11 is connected, the tip (ie, the lower end) of the inverted cone feeding structure 16 is fixed on the floor 14, and the tip of the inverted cone feeding structure 16 is connected to the first N-type under the floor 14 through a cable
  • the connector 17 is connected to form the vertical polarization port of the vertical polarization antenna.
  • the various components in the vertically polarized antenna unit can be made of copper material with a thickness of 0.5mm. .
  • the radius of the floor 14 may be 85mm
  • the radius of the circular coupling patch 12 may be 51mm
  • the radius of the coupling ring 13 may be 17.5mm
  • the plane end radius of the inverted cone feed structure may be 11mm.
  • the working bandwidth of the vertically polarized antenna unit can be 0.86GHz-5.62GHz, and the height of the vertically polarized antenna unit is 56mm. Compared with the monopole antenna in the related technology, this extends the antenna bandwidth. At the same time, the height of the vertically polarized antenna unit is reduced.
  • the horizontally polarized antenna unit also includes parasitic stubs 24 respectively corresponding to each group of dipoles 21, wherein the parasitic stubs 24 are provided on the second plate surface of the annular medium 23 At the edge.
  • the parasitic branches 24 corresponding to each group of dipoles 21 are arranged at the edge position of the second plate surface of the annular medium 23, that is, at the edge position of the plate surface where the printing power divider 22 is located, so that each group of parasitic branches 24 It is arranged opposite to each group of dipoles 21, so as to improve the impedance matching characteristics of the horizontally polarized antenna unit.
  • the material of the annular medium can be FR4, the thickness can be 1.5 mm, the relative dielectric constant can be 4.4, and the loss tangent can be 0.02.
  • the horizontally polarized antenna unit also includes a feed point 25 arranged on the ring medium 23, wherein the feed point 25 is connected to the floor 14 through a cable.
  • the second N-type connector 26 is connected.
  • a feeding point 25 is provided on the ring medium 23, and the horizontally polarized antenna unit can be fed through the feeding point 25 and a cable.
  • the cable may be a standard coaxial cable with a characteristic impedance of 50 ohms.
  • one end of the cable is connected to the feed point 25, and the other end can pass through the floor 14 and be connected to the second N-type connector 26 located under the floor 14 to form a horizontally polarized port of the horizontally polarized antenna unit.
  • the cable can be directly fixed to one of the metal short-circuit patches 15 in the vertically polarized antenna unit to increase the fixing firmness of the cable.
  • the working bandwidth of the horizontally polarized antenna unit can be 1.62GHz-2.71GHz, and the total height of the omnidirectional room-divided MIMO antenna is 79mm, that is, when the ring medium is vertically fixed to the circular coupling sticker through multiple bolts
  • the height of the omnidirectional indoor MIMO antenna is 79mm; compared with related technologies, this greatly reduces the height of the MIMO antenna and extends the horizontal polarization The bandwidth of the antenna unit.
  • the working bandwidth of the vertically polarized antenna unit is 0.86GHz-5.62GHz
  • the working bandwidth of the horizontally polarized antenna unit is 1.62GHz-2.71GHz
  • the omnidirectional indoor MIMO antenna in this embodiment can fully cover GSM and distribution CDMA2000, WLAN and Worldwide Microwave Interconnection Access (WiMAX) and other communication frequency bands, such as the integrated control system (DCS), time division-synchronous code division multiple access (TD-SCDMA), TD-LTE, wideband code division multiple access (WCDMA), The coverage of the antenna.
  • DCS integrated control system
  • TD-SCDMA time division-synchronous code division multiple access
  • TD-LTE time division-synchronous code division multiple access
  • WCDMA wideband code division multiple access
  • FIG. 4 is a comparison diagram of the return loss curve between the vertically polarized antenna unit and other different vertically polarized antenna units in this embodiment.
  • Figure 2 shows the return loss curve of a vertically polarized antenna unit lacking a circular coupling patch (referring to the solid line curve with the highest return loss value at a frequency of 0.8 GHz in Figure 4) and the lack of a coupling loop
  • the return loss curve of the vertically polarized antenna unit (refer to the other solid curve in Figure 4 except the solid curve indicating the lack of a circular coupling patch) and the echo of the vertically polarized antenna unit in this embodiment A curve of the loss value changing with frequency.
  • the curve of the return loss value changing with the frequency of the vertically polarized antenna unit in this embodiment includes a simulation curve and a measured curve. It can be seen from the comparison of Figure 2 that when the circular coupling patch is loaded on the top of the radiating patch in the vertically polarized antenna unit, the working bandwidth of the antenna in the low frequency band is significantly expanded, and the height of the vertically polarized antenna unit is effectively reduced. This provides a basis for realizing the overall low-profile structural characteristics of the dual-polarized MIMO antenna; in addition, by loading a coupling loop at the bottom of the radiating patch in the vertically polarized antenna unit, the impedance matching state of the antenna in the high frequency band is improved.
  • FIG. 5 shows the simulated and measured return loss curves of the horizontally polarized antenna unit and the isolation curve between ports.
  • the simulated return loss curve of the horizontally polarized antenna unit is in good agreement with the measured return loss curve
  • the measured return loss curve shows that the working bandwidth of the horizontally polarized antenna unit is 1.62GHz-2.71 GHz, and the isolation between the port of the horizontally polarized antenna unit and the port of the vertically polarized antenna unit is maintained above 26dB.
  • the vertically polarized antenna unit and the horizontally polarized antenna unit are combined into an omnidirectional room-divided MIMO antenna, and three centrally symmetrical and vertically arranged radiation patches are arranged in the vertically polarized antenna unit.
  • the top and bottom of the patch are loaded with a circular coupling patch and a coupling ring, and a dipole and a power divider are respectively arranged on the two plates of the ring medium in the horizontal polarization antenna unit, which significantly reduces the MIMO antenna
  • the overall height of the MIMO antenna has a wide working frequency band, which in turn covers more communication frequency bands, and makes the vertical polarization and horizontal polarization have good omnidirectional radiation on the horizontal plane, and makes the MIMO antenna have a good working frequency band
  • the cross-polarization ratio index and isolation index, and the structure is simple, easy to process.
  • the device embodiments described above are merely illustrative.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the objectives of the solutions of the embodiments. Those of ordinary skill in the art can understand and implement it without creative work.
  • each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware.
  • the above technical solution essentially or the part that contributes to the related technology can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk , CD-ROM, etc., including a number of instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiment.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

本公开实施例提供一种全向室分MIMO天线，全向室分MIMO天线包括：垂直极化天线单元和水平极化天线单元；垂直极化天线单元包括三个中心对称且垂直设置的辐射贴片、圆形耦合贴片和耦合环，圆形耦合贴片设置于三个辐射贴片的顶端，耦合环固定于地板上，且三个辐射贴片的底部位于耦合环的内部并固定于地板上；水平极化天线单元包括多组中心对称排列的偶极子和分别与每组偶极子对应设置的印刷功分器，且偶极子印刷于环形介质的第一板面上，印刷功分器印刷于环形介质的与第一板面相对的第二板面上，环形介质通过多个螺栓垂直固定于圆形耦合贴片上。

Description

全向室分MIMO天线
相关申请的交叉引用
本申请主张在2019年6月14日在中国提交的中国专利申请号No.201910517639.X的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及一种全向室分MIMO天线。
背景技术
室内分布系统在移动通信网络中扮演着极其重要的角色，为了进一步提升室分网络的性能，多输入多输出(Multiple-Input Multiple-Output，MIMO)技术发挥了重要作用。MIMO技术要求在系统发射和接收两端均采用多天线技术，利用多个天线或者具有多种极化方式的天线进行信号的发射与接收，并利用空间资源及无线信道的多径，建立并行的传输通道，实现多收多发的通信模式。MIMO技术能够大幅提升信道容量、提高频谱利用率、消除极化失配、增加分集增益，具有明显的性能优势；与此同时，室内电磁环境错综复杂，多种通信系统并存，例如全球移动通信系统、分布式控制系统、时分-同步码分多址、TD-LTE和无线局域网等多系统并存，多系统之间的干扰问题日益突出，MIMO技术同样是有效解决该些问题的技术途径。
但是，由于大多数室分天线都安装在室内环境，如隐藏在室内天花板上。这便对室分天线的体积和外观设计提出了更高的要求，因此如何在降低天线高度的同时，实现良好的MIMO辐射性能是室分天线研究的关键。
发明内容
本公开实施例提供一种全向室分MIMO天线，以实现在降低天线高度的同时，实现良好的MIMO辐射性能。
本公开实施例提供一种全向室分多输入多输出MIMO天线，全向室分MIMO天线包括：
垂直极化天线单元和水平极化天线单元；其中，
所述垂直极化天线单元包括三个中心对称且垂直设置的辐射贴片、圆形耦合贴片和耦合环，其中所述圆形耦合贴片设置于三个辐射贴片的顶端，所述耦合环固定于地板上，且所述三个辐射贴片的底部位于所述耦合环的内部并固定于地板上；所述水平极化天线单元包括多组中心对称排列的偶极子和分别与每组偶极子对应设置的印刷功分器，且所述偶极子印刷于环形介质的第一板面上，所述印刷功分器印刷于所述环形介质的与第一板面相对的第二板面上，所述环形介质通过多个螺栓垂直固定于所述圆形耦合贴片上。
可选地，所述垂直极化天线单元还包括三个金属短路贴片，其中所述三个金属短路贴片的一端均与所述圆形耦合贴片的边缘连接，且所述三个金属短路贴片的另一端均固定于所述地板上。
可选地，所述垂直极化天线单元还包括倒锥形馈电结构，其中所述倒锥形馈电结构的尖端部固定于地板上，所述三个辐射贴片的底部均与所述倒锥形馈电结构的平面端部连接，且所述倒锥形馈电结构的尖端部通过电缆与位于地板下方的第一N型接头连接。
可选地，所述水平极化天线单元还包括分别与每组偶极子对应设置的寄生枝节，其中所述寄生枝节设置于所述环形介质的第二板面的边缘位置处。
可选地，所述水平极化天线单元还包括设置于所述环形介质上的馈电点，其中所述馈电点通过电缆与位于所述地板下方的第二N型接头连接。
可选地，所述垂直极化天线单元的工作带宽为0.86GHz-5.62GHz，所述水平极化天线单元的工作带宽为1.62GHz-2.71GHz。
可选地，所述垂直极化天线单元的高度为56mm，且所述全向室分MIMO天线的总高度为79mm。
可选地，所述环形介质的材料为FR4，厚度为1.5mm，相对介电常数为4.4，损耗角正切为0.02。
本公开实施例提供的全向室分MIMO天线，包括垂直极化天线单元和水平极化天线单元，其中垂直极化天线单元中三个辐射贴片的顶端设置圆形耦合贴片，且将三个辐射贴片的底部设置于固定在地板上的耦合环的内部，水平极化天线单元包括多组中心对称排列的偶极子和分别与每组偶极子对应设 置的印刷功分器，且偶极子和印刷功分器分别印刷在环形介质的两个板面上，环形介质通过多个螺栓垂直固定于圆形耦合贴片上，实现了通过在辐射贴片的两端分别设置圆形耦合贴片和耦合环，降低MIMO天线的高度，扩展天线带宽，并实现了结合水平极化天线单元中环形介质两个板面上分别设置偶极子和印刷功分器，扩展水平极化天线带宽，且使得垂直极化天线单元和水平极化天线单元在水平面上均具有良好的全向辐射性能。
附图说明
为了更清楚地说明本公开实施例或相关技术中的技术方案，下面将对实施例或相关技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本公开实施例中垂直极化天线单元的结构示意图；
图2为本公开实施例中水平极化天线单元的结构示意图；
图3为本公开实施例中全向室分MIMO天线的剖面结构示意图；
图4为本公开实施例中的垂直极化天线单元与其他不同垂直极化天线单元的回波损耗曲线比较图；
图5为本公开实施例中水平极化天线单元的回波损耗曲线及端口间隔离度曲线图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
在相关技术中，MIMO技术是有效解决多系统间干扰问题的有效技术途径，且能够大幅升信道容量、提高频谱利用率、消除极化失配、增加分集增益，具有明显的性能优势，但是由于大多数室分MIMO天线都安装在室内环 境，因此如何实现天线与室内环境的和谐一致，减小天线的轮廓高度，并且同时使得天线具有良好的辐射性能，是室分天线研究的关键。
基于此，为了降低室分MIMO天线的高度，并且使得室分MIMO天线具有良好的辐射性能，本实施例提供一种全向室分MIMO天线。
具体的，如图1-3所示，本公开实施例提供一种全向室分MIMO天线，该全向室分MIMO天线包括：
垂直极化天线单元和水平极化天线单元；其中，
所述垂直极化天线单元包括三个中心对称且垂直设置的辐射贴片11、圆形耦合贴片12和耦合环13，其中所述圆形耦合贴片12设置于三个辐射贴片11的顶端，所述耦合环13固定于地板14上，且所述三个辐射贴片11的底部位于所述耦合环13的内部并固定于地板14上；所述水平极化天线单元包括多组中心对称排列的偶极子21和分别与每组偶极子21对应设置的印刷功分器22，且所述偶极子21印刷于环形介质23的第一板面上，所述印刷功分器22印刷于所述环形介质23的与第一板面相对的第二板面上，所述环形介质23通过多个螺栓3垂直固定于所述圆形耦合贴片12上。
具体的，参见图1，垂直极化天线单元包括的三个辐射贴片11中心对称排列且相互间隔120度，且辐射贴片11可以为三角形状，并且在三个辐射贴片11的顶端设置有圆形耦合贴片12，在三个辐射贴片11的底部设置有耦合环13，其中，该耦合环13直接焊接于地板14上，且三个辐射贴片11的底部设置于耦合环13的内部。这样，通过在三个辐射贴片的顶端设置圆形耦合贴片，使得全向室分MIMO天线在低频段的工作带宽得到了扩展，并且有效降低了垂直极化天线单元的高度，使得垂直极化天线单元的高度仅为56mm，从而为实现双极化MIMO天线整体的低剖面结构特性提供了基础；此外，通过在三个辐射贴片的底部设置耦合环，提升了全向室分MIMO天线在高频段的阻抗匹配状态；另外，基于三个辐射贴片的外轮廓为三角形状，并且电流主要沿着辐射贴片的外轮廓边缘分布，这使得该垂直极化天线单元的辐射原理等效于单锥天线或者单极子天线。
另外，具体的，参见图2，水平极化天线单元中，环形介质23的第一板面上设置有多组中心对称排列的偶极子21，具体的，环形介质23的第一板 面(图2中环形介质的反面)上可以设置有5组中心对称排列的偶极子21(指图2中21所指示的环形介质反面的T形结构)，此时对应的，环形介质23的第二板面(图2中环形介质的正面)上设置有5组中心对称排列的印刷功分器22(指图2中22指示的环形介质正面的U形结构)，且该5组印刷功分器22中的每一组分别与5组偶极子中的每一组相对设置，从而使得5路印刷功分器能够为5组偶极子提供等幅同相的馈电，从而在水平面得到全向辐射方向图。
另外，具体的，参见图3，环形介质23通过多个螺栓3垂直固定于圆形耦合贴片22上，即水平极化天线单元通过多个螺栓垂直固定于垂直极化天线单元的正上方，以实现水平极化天线单元和垂直极化天线单元的组合，得到全向室分MIMO天线。具体的，多个螺栓的数量可以为3个。
这样，本实施例通过在垂直极化天线单元中设置辐射贴片，且在辐射贴片的顶端和底部分别设置圆形耦合贴片和耦合环，扩展了天线带宽，降低了垂直极化天线的高度，从而降低了MIMO天线的整体高度；此外，通过在水平极化天线单元中环形介质两个板面上分别设置偶极子和印刷功分器，实现了扩展水平极化天线单元的带宽，且使得垂直极化天线单元和水平极化天线单元在水平面上均具有良好的全向辐射性能。
此外，进一步地，继续参见图1和图3，垂直极化天线单元还包括三个金属短路贴片15，其中所述三个金属短路贴片15的一端均与所述圆形耦合贴片12的边缘连接，且所述三个金属短路贴片15的另一端均固定于所述地板14上。
具体的，三个金属短路贴片15可以间隔120度的固定在圆形耦合贴片12的边缘位置上，以提高圆形耦合贴片通过三个金属短路贴片固定在地板上时的稳定度。
此外，进一步地，参见图1和图3，垂直极化天线单元还包括倒锥形馈电结构16，其中所述倒锥形馈电结构16的尖端部固定于地板14上，所述三个辐射贴片11的底部均与所述倒锥形馈电结构16的平面端部连接，且所述倒锥形馈电结构16的尖端部通过电缆与位于地板14下方的第一N型接头17连接。
具体的，垂直极化天线单元通过倒锥形馈电结构完成激励，该倒锥形馈电结构16的上端为圆形平面端，下端为尖端。此外，具体的，电缆可以为特性阻抗为50欧姆的标准同轴电缆。在本实施例中，三个辐射贴片11的底部通过倒锥形馈电结构16固定于地板14上，即倒锥形馈电结构16的平面端部(即上端部)与三个辐射贴片11的底部连接，倒锥形馈电结构16的尖端部(即下端部)固定于地板14上，且倒锥形馈电结构16的尖端部通过电缆与位于地板14下方的第一N型接头17连接，形成垂直极化天线的垂直极化端口。
此外，在此需要说明的是，垂直极化天线单元中的各个部件，如辐射贴片、圆形耦合贴片、耦合环和金属短路贴片等可以采用厚度为0.5mm的铜材料加工而成。
另外，具体的，地板14的半径可以为85mm，圆形耦合贴片12的半径可以为51mm，耦合环13的半径可以为17.5mm，倒锥形馈电结构的平面端部半径可以为11mm。
另外，具体的，垂直极化天线单元的工作带宽可以为0.86GHz-5.62GHz，且垂直极化天线单元的高度为56mm，这相较相关技术中的单极天线而言，扩展了天线带宽的同时，降低了垂直极化天线单元的高度。
此外，进一步地，继续参见图2，水平极化天线单元还包括分别与每组偶极子21对应设置的寄生枝节24，其中所述寄生枝节24设置于所述环形介质23的第二板面的边缘位置处。
具体的，通过在环形介质23的第二板面边缘位置处，即印刷功分器22所在板面的边缘位置处设置与每组偶极子21对应的寄生枝节24，使得每组寄生枝节24与每组偶极子21相对设置，从而实现了改善水平极化天线单元的阻抗匹配特性。
具体的，环形介质的材料可以为FR4，厚度可以为1.5mm，相对介电常数可以为4.4，损耗角正切可以为0.02。
另外，进一步地，继续参见图2和图3，水平极化天线单元还包括设置于所述环形介质23上的馈电点25，其中所述馈电点25通过电缆与位于所述地板14下方的第二N型接头26连接。
具体的，环形介质23上设置有馈电点25，水平极化天线单元可以通过该馈电点25和电缆进行馈电，其中电缆可以为一段特性阻抗为50欧姆的标准同轴电缆。具体的，电缆的一端与馈电点25连接，且另一端可以穿过地板14与位于地板14下方的第二N型接头26连接，形成水平极化天线单元的水平极化端口。当然，为了保证电缆的固定牢固性，可以直接将该电缆固定于垂直极化天线单元中的其中一个金属短路贴片15上，以增加电缆的固定牢固性。
此外，具体的，水平极化天线单元的工作带宽可以为1.62GHz-2.71GHz，且全向室分MIMO天线的总高度为79mm，即在将环形介质通过多个螺栓垂直固定于圆形耦合贴片上组合为全向室分MIMO天线时，全向室分MIMO天线的高度为79mm；这相较于相关技术而言，在很大程度上降低了MIMO天线的高度，且扩展了水平极化天线单元的带宽。此外，垂直极化天线单元的工作带宽为0.86GHz-5.62GHz，水平极化天线单元的工作带宽为1.62GHz-2.71GHz，使得本实施例中的全向室分MIMO天线能够全面覆盖GSM、分布式控制系统(DCS)、时分-同步码分多址(TD-SCDMA)、TD-LTE、宽带码分多址(WCDMA)、CDMA2000、WLAN及全球微波互联接入(WiMAX)等通信频段，提高了天线的覆盖度。
下面基于上述垂直极化天线单元和水平极化天线单元的结构，对本实施例中的全向室分MIMO天线的效果进行具体说明。
具体的，参见图4，为本实施例中垂直极化天线单元与其他不同垂直极化天线单元之间的回波损耗曲线比较图。图2分别给出了缺少圆形耦合贴片的垂直极化天线单元的回波损耗曲线(指图4中在频率0.8GHz时回波损耗值处于最高点的实线曲线)、缺少耦合环的垂直极化天线单元的回波损耗曲线(指图4中除指示缺少圆形耦合贴片的实线曲线之外的另一条实线曲线)以及本实施例中的垂直极化天线单元的回波损耗数值随频率变化的曲线，其中本实施例中的垂直极化天线单元的回波损耗数值随频率变化的曲线包括仿真曲线和实测曲线。通过图2对比可知，当通过在垂直极化天线单元中的辐射贴片顶端加载圆形耦合贴片时，天线在低频段的工作带宽明显得到扩展，且有效降低了垂直极化天线单元的高度，这对实现双极化MIMO天线的整体低剖面结构特性提供了基础；此外，通过在垂直极化天线单元中的辐射贴片底 部加载耦合环，提升了天线在高频段的阻抗匹配状态。
此外，具体的，参见图5，图5示出了水平极化天线单元的仿真和实测回波损耗曲线以及实现端口间隔离度曲线。通过图5可知，水平极化天线单元的仿真回波损耗曲线和实测回波损耗曲线吻合度较高，且实测回波损耗曲线表明，该水平极化天线单元的工作带宽范围为1.62GHz-2.71GHz，且水平极化天线单元的端口和垂直极化天线单元的端口之间的隔离度保持在26dB以上。
另外，具体的，在此还需要说明的是，通过垂直极化天线单元在0.9GHz、1.8GHz、2.7GHz、3.5GHz和5.5GHz的水平面方向图以及水平极化天线单元在0.9GHz、1.8GHz和2.7GHz的水平面方向图，可以得出该全向室分MIMO天线的垂直极化天线单元和水平极化天线单元的水平面方向图均表现出全向辐射的特性，且在测量范围内，水平极化天线单元和垂直极化天线单元水平面方向图的交叉极化比高于15dB。
这样，本实施例通过将垂直极化天线单元和水平极化天线单元组合为全向室分MIMO天线，且在垂直极化天线单元中设置三个中心对称且垂直设置的辐射贴片，在辐射贴片的顶端和底部分别加载圆形耦合贴片和耦合环，并在水平极化天线单元中的环形介质的两个板面上分别设置偶极子和功分器，使得显著降低了MIMO天线的整体高度，具有较宽的工作频段，进而覆盖较多的通信频段，并使得垂直极化和水平极化在水平面上均具有良好的全向辐射性，以及使得MIMO天线在工作频段内具有良好的交叉极化比指标和隔离度指标，且结构简单，易于加工。
以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性的劳动的情况下，即可以理解并实施。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到各实施方式可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬 件。基于这样的理解，上述技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品可以存储在计算机可读存储介质中，如ROM/RAM、磁碟、光盘等，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行各个实施例或者实施例的某些部分所述的方法。
最后应说明的是：以上实施例仅用以说明本公开的技术方案，而非对其限制；尽管参照前述实施例对本公开进行了详细的说明，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公开各实施例技术方案的精神和范围。

Claims (8)

  1. 一种全向室分多输入多输出MIMO天线，全向室分MIMO天线包括：
    垂直极化天线单元和水平极化天线单元；其中，
    所述垂直极化天线单元包括三个中心对称且垂直设置的辐射贴片、圆形耦合贴片和耦合环，所述圆形耦合贴片设置于三个辐射贴片的顶端，所述耦合环固定于地板上，且所述三个辐射贴片的底部位于所述耦合环的内部并固定于地板上；所述水平极化天线单元包括多组中心对称排列的偶极子和分别与每组偶极子对应设置的印刷功分器，且所述偶极子印刷于环形介质的第一板面上，所述印刷功分器印刷于所述环形介质的与第一板面相对的第二板面上，所述环形介质通过多个螺栓垂直固定于所述圆形耦合贴片上。
  2. 根据权利要求1所述的全向室分MIMO天线，其中，所述垂直极化天线单元还包括三个金属短路贴片，所述三个金属短路贴片的一端均与所述圆形耦合贴片的边缘连接，且所述三个金属短路贴片的另一端均固定于所述地板上。
  3. 根据权利要求1所述的全向室分MIMO天线，其中，所述垂直极化天线单元还包括倒锥形馈电结构，所述倒锥形馈电结构的尖端部固定于地板上，所述三个辐射贴片的底部均与所述倒锥形馈电结构的平面端部连接，且所述倒锥形馈电结构的尖端部通过电缆与位于地板下方的第一N型接头连接。
  4. 根据权利要求1所述的全向室分MIMO天线，其中，所述水平极化天线单元还包括分别与每组偶极子对应设置的寄生枝节，所述寄生枝节设置于所述环形介质的第二板面的边缘位置处。
  5. 根据权利要求1所述的全向室分MIMO天线，其中，所述水平极化天线单元还包括设置于所述环形介质上的馈电点，所述馈电点通过电缆与位于所述地板下方的第二N型接头连接。
  6. 根据权利要求1所述的全向室分MIMO天线，其中，所述垂直极化天线单元的工作带宽为0.86GHz-5.62GHz，所述水平极化天线单元的工作带宽为1.62GHz-2.71GHz。
  7. 根据权利要求1所述的全向室分MIMO天线，其中，所述垂直极化 天线单元的高度为56mm，且所述全向室分MIMO天线的总高度为79mm。
  8. 根据权利要求1所述的全向室分MIMO天线，其中，所述环形介质的材料为FR4，厚度为1.5mm，相对介电常数为4.4，损耗角正切为0.02。
PCT/CN2020/095792 2019-06-14 2020-06-12 全向室分mimo天线 Ceased WO2020249078A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910517639.X 2019-06-14
CN201910517639.XA CN112086738A (zh) 2019-06-14 2019-06-14 一种全向室分mimo天线

Publications (1)

Publication Number Publication Date
WO2020249078A1 true WO2020249078A1 (zh) 2020-12-17

Family

ID=73734110

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/095792 Ceased WO2020249078A1 (zh) 2019-06-14 2020-06-12 全向室分mimo天线

Country Status (2)

Country Link
CN (1) CN112086738A (zh)
WO (1) WO2020249078A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115693184A (zh) * 2022-11-08 2023-02-03 南京信息工程大学 一种圆极化广角扫描且全方位覆盖的异构阵列
CN116505246A (zh) * 2023-04-12 2023-07-28 福州大学 一种偶极子和螺旋复合结构的小型化卫星导航终端天线
CN121307494A (zh) * 2025-12-12 2026-01-09 武汉船舶通信研究所(中国船舶集团有限公司第七二二研究所) 一种高效率宽带低剖面超短波天线

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112768885B (zh) * 2020-12-17 2023-10-03 深圳市南斗星科技有限公司 室内分布天线
CN112688069B (zh) * 2020-12-21 2022-01-04 西安电子科技大学 一种方向图可调的三极化单元及其阵列天线
CN113851826B (zh) * 2021-09-30 2025-05-23 广东中元创新科技有限公司 一种单极化低不圆度的室内分布天线
CN114336033B (zh) * 2022-01-24 2023-07-04 南通大学 一种超宽带叶片状垂直极化全向天线
CN117691369A (zh) * 2022-09-02 2024-03-12 华为技术有限公司 天线结构和通信设备
CN118801083A (zh) * 2023-04-13 2024-10-18 华为技术有限公司 一种天线及通信设备
CN116914427B (zh) * 2023-08-07 2024-03-15 中天通信技术有限公司 一种应用于室分系统的超宽带低剖面垂直极化全向天线
CN119786947B (zh) * 2024-12-31 2025-09-26 西安电子科技大学 一种宽带低剖面双极化全向天线

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103811857A (zh) * 2014-01-21 2014-05-21 盛宇百祺（南京）通信技术有限公司 垂直极化全向天线和具有其的4g双极化全向吸顶天线
CN103811861A (zh) * 2014-01-21 2014-05-21 盛宇百祺（南京）通信技术有限公司 水平极化全向天线
CN104300208A (zh) * 2014-09-05 2015-01-21 江苏省东方世纪网络信息有限公司 垂直极化全向天线
CN104300209A (zh) * 2014-09-05 2015-01-21 江苏省东方世纪网络信息有限公司 垂直极化吸顶全向天线
CN105789913A (zh) * 2016-04-27 2016-07-20 陈志璋 一种宽带双极化全向mimo天线
CN106099325A (zh) * 2016-05-31 2016-11-09 北京邮电大学 应用于室内屋顶的全向双极化宽带天线
CN106602230A (zh) * 2016-11-14 2017-04-26 广东通宇通讯股份有限公司 小型化增强型双极化全向吸顶天线
US20170194718A1 (en) * 2015-12-31 2017-07-06 Lhc2 Inc Multi-band dual polarization omni-directional antenna
CN109301488A (zh) * 2018-09-06 2019-02-01 深圳大学 一种应用于室内分布系统的全向双宽频双极化天线
CN109411903A (zh) * 2017-08-18 2019-03-01 中国移动通信集团设计院有限公司 室内mimo通信系统的高性能宽带双极化全向天线

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202308290U (zh) * 2011-10-21 2012-07-04 烟台新锐科技有限公司 一种双极化吸顶全向天线
CN204216207U (zh) * 2014-09-05 2015-03-18 江苏省东方世纪网络信息有限公司 天线
CN206076502U (zh) * 2016-08-17 2017-04-05 深圳市普方众智精工科技有限公司 垂直极化吸顶天线及双极化全向吸顶天线

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103811857A (zh) * 2014-01-21 2014-05-21 盛宇百祺（南京）通信技术有限公司 垂直极化全向天线和具有其的4g双极化全向吸顶天线
CN103811861A (zh) * 2014-01-21 2014-05-21 盛宇百祺（南京）通信技术有限公司 水平极化全向天线
CN104300208A (zh) * 2014-09-05 2015-01-21 江苏省东方世纪网络信息有限公司 垂直极化全向天线
CN104300209A (zh) * 2014-09-05 2015-01-21 江苏省东方世纪网络信息有限公司 垂直极化吸顶全向天线
US20170194718A1 (en) * 2015-12-31 2017-07-06 Lhc2 Inc Multi-band dual polarization omni-directional antenna
CN105789913A (zh) * 2016-04-27 2016-07-20 陈志璋 一种宽带双极化全向mimo天线
CN106099325A (zh) * 2016-05-31 2016-11-09 北京邮电大学 应用于室内屋顶的全向双极化宽带天线
CN106602230A (zh) * 2016-11-14 2017-04-26 广东通宇通讯股份有限公司 小型化增强型双极化全向吸顶天线
CN109411903A (zh) * 2017-08-18 2019-03-01 中国移动通信集团设计院有限公司 室内mimo通信系统的高性能宽带双极化全向天线
CN109301488A (zh) * 2018-09-06 2019-02-01 深圳大学 一种应用于室内分布系统的全向双宽频双极化天线

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115693184A (zh) * 2022-11-08 2023-02-03 南京信息工程大学 一种圆极化广角扫描且全方位覆盖的异构阵列
CN116505246A (zh) * 2023-04-12 2023-07-28 福州大学 一种偶极子和螺旋复合结构的小型化卫星导航终端天线
CN121307494A (zh) * 2025-12-12 2026-01-09 武汉船舶通信研究所(中国船舶集团有限公司第七二二研究所) 一种高效率宽带低剖面超短波天线

Also Published As

Publication number Publication date
CN112086738A (zh) 2020-12-15

Similar Documents

Publication Publication Date Title
WO2020249078A1 (zh) 全向室分mimo天线
Dai et al. Multiband and dual-polarized omnidirectional antenna for 2G/3G/LTE application
US8854270B2 (en) Hybrid multi-antenna system and wireless communication apparatus using the same
CN114976665B (zh) 一种加载频率选择表面辐射稳定的宽带双极化偶极子天线
CN208690490U (zh) 一种基于共面波导的对地开槽的圆极化天线
CN207868399U (zh) 三频高隔离模块天线及电子设备
US20130285867A1 (en) Compact radiation structure for diversity antennas
CN106299727A (zh) 低互耦4单元超宽带mimo天线
CN106716714A (zh) 体育场天线
CN107579335A (zh) 宽频带缝隙天线单元及缝隙天线
CN112688070A (zh) 一种分布式多点馈电宽带垂直极化全向天线
CN111600136B (zh) 一种应用于无线局域网的高隔离高增益大规模mimo天线
US11189916B2 (en) Double-frequency antenna structure with high isolation
CN103956567B (zh) 一种双极化双端口腔体方向性天线
CN206076502U (zh) 垂直极化吸顶天线及双极化全向吸顶天线
CN104993245A (zh) S波段动中通双频圆极化微带天线及其阵列
CN105406190B (zh) 平板双极化天线及复合天线
CN112688068B (zh) 一种小型化的宽带三极化天线
Aziz et al. Study on microstrip X-linear polarized and X-circular polarized antenna
CN210692769U (zh) 贴片天线、天线阵列及电子设备
CN212257669U (zh) 多通道加强型wifi信号收发装置
CN211455936U (zh) 多通道wifi信号收发装置
CN114639958A (zh) 一种三频小型化美化楼宇天线
CN208299024U (zh) 一种高隔离度三频双极化全向天线
TWI464962B (zh) 複合式多天線系統及其無線通訊裝置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20821813

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20821813

Country of ref document: EP

Kind code of ref document: A1