WO2017028379A1 - 超宽频双极化天线及其超宽频双极化天线振子 - Google Patents

超宽频双极化天线及其超宽频双极化天线振子 Download PDF

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Publication number
WO2017028379A1
WO2017028379A1 PCT/CN2015/093762 CN2015093762W WO2017028379A1 WO 2017028379 A1 WO2017028379 A1 WO 2017028379A1 CN 2015093762 W CN2015093762 W CN 2015093762W WO 2017028379 A1 WO2017028379 A1 WO 2017028379A1
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WIPO (PCT)
Prior art keywords
ultra
polarized antenna
wideband dual
antenna element
support base
Prior art date
Application number
PCT/CN2015/093762
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English (en)
French (fr)
Inventor
岳彩龙
邬政
韩波
石磊
付聪
方铁勇
曹林利
刘木林
Original Assignee
广东通宇通讯股份有限公司
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Publication of WO2017028379A1 publication Critical patent/WO2017028379A1/zh

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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
    • 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
    • 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
    • H01Q21/26—Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre
    • 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
    • H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • H01Q5/25—Ultra-wideband [UWB] systems, e.g. multiple resonance systems; Pulse systems

Definitions

  • the present invention relates to the field of communications, and in particular to an ultra-wideband dual-polarized antenna and an antenna element thereof.
  • the base station antenna system is the most important component subsystem of the wireless communication network.
  • the antenna element is a component on the antenna, which has the function of guiding and amplifying electromagnetic waves, so that the electromagnetic signal received by the antenna is stronger.
  • the conventional antenna element includes a surface radiation structure and a radiation coupling structure.
  • the surface radiation structure is coupled and coupled by a radiation coupling structure. Since the size of the antenna is proportional to the wavelength, the conventional antenna element has a large volume, a complicated structure, and a low gain. , failed to meet the increasing antenna specifications.
  • Another object of the present invention is to provide an ultra-wideband dual-polarized antenna that is small in size, high in gain, simple in structure, and low in cost.
  • An ultra-wideband dual-polarized antenna vibrator comprising at least two radiating elements, a coupling connecting piece connecting the radiating elements in sequence, a supporting base, a grounding plate, and a grounded coaxial line, and the radiating unit passes through the supporting base
  • the at least two radiating elements are mounted obliquely on the support base.
  • the radiating element is installed at an angle with the horizontal plane, the structure reduces the antenna aperture, improves the vibrator gain, the structure is simpler, the size is smaller, and the cost of the same in meeting the performance requirements is lower; in the same reflector width
  • small-caliber vibrators are used to reduce the mutual influence between the vibrators and improve the overall performance of the array.
  • the at least two radiating elements are mounted on the support base at an angle of 45 degrees. This angle mount enables the best technical results in terms of performance and size balance.
  • the ground plate is a PCB structure.
  • the support base is provided with a buckle, and the at least two radiation units are mounted on the support base by snapping.
  • the snap fit is quick and easy to install.
  • the radiating unit comprises a double-sided metal-clad copper, which is a front non-frequency-varying gradual structure and a back non-frequency-varying grading structure, and the double-sided metal clad copper is connected by uniformly arranged metallized via holes.
  • the radiating element of the ultra-wideband bipolar antenna element adopts a non-frequency varying structure to keep the antenna input impedance constant in a wide frequency band.
  • the via hole of the front non-frequency variable gradation structure is a connection point between the radiation unit and the coaxial core
  • the via hole of the reverse non-frequency gradation structure is a radiation unit and a coaxial outer skin. Junction.
  • it further comprises a coaxial line of the coaxial line, the coaxial line end is soldered in the radiating unit, and the coaxial line is inserted into the grounding plate through the wire seat, and the grounding surface of the grounding plate and the coaxial line Outer conductor directly connected
  • the support base is fixed to the reflector by rivets
  • the ground plate is fixed to the reflector by rivets
  • the ultra-wideband dual-polarized antenna element comprises four of the radiating elements, and each of the radiating elements is sequentially connected by the coupling connecting piece, and the coupling connecting piece is formed by a metal piece and coupled by a metal piece. A coupling piece is also provided on the coupling piece. This structure reduces the antenna size.
  • the support base is an integrated plastic component, and includes a buckle for mounting the radiation unit and a support block for supporting the radiation unit.
  • the present invention also provides an ultra-wideband dual-polarized antenna comprising a reflector, at least one antenna element mounted on the reflector, the antenna element adopting an ultra-wideband dual-polarized antenna element as described above,
  • the radiating element of the ultra-wideband dual-polarized antenna element is fixed to the reflecting plate through a support base, and the grounding plate is fixed on the reflecting plate.
  • the radiating element of the ultra-wideband dual-polarized antenna vibrator is inclined at an angle to the horizontal plane.
  • the structure reduces the antenna aperture, improves the vibrator gain, and has a simpler structure and a smaller size, and the same cost is met in meeting the performance requirements. Low; In the case of the same reflector width, the use of small-diameter vibrators reduces the interaction between the vibrators and improves the overall performance of the array.
  • the present invention has the following advantages:
  • the ultra-wideband dual-polarized antenna oscillator of the present invention installs the radiant unit at an angle that is at an angle to the horizontal plane.
  • the structure reduces the antenna aperture, improves the gain of the vibrator, and has a simpler structure and a smaller size, which satisfies performance requirements.
  • the cost of the same is also low; in the case of the same reflector width, the small-diameter vibrator is used to reduce the mutual influence between the vibrators and improve the overall performance of the array.
  • the radiating element of the ultra-wideband dual-polarized antenna oscillator adopts a non-frequency-varying structure, and the antenna input impedance is kept constant in a wide frequency band, and has a broadband characteristic.
  • the feeder is a two-wire structure, and the two-wire structure is a balanced structure, and no additional imbalance-balance conversion is required.
  • the ultra-wideband dual-polarized antenna using the ultra-wideband dual-polarized antenna oscillator improves the gain of the vibrator, and has a simpler structure, smaller size, and lower cost, thereby improving the overall performance of the array.
  • FIG. 1 is a perspective view of an embodiment of an ultra-wideband dual-polarized antenna oscillator according to the present invention
  • FIG. 2 is a front elevational view of an embodiment of an ultra-wideband dual-polarized antenna oscillator of the present invention
  • FIG. 3 is a rear elevational view of an embodiment of an ultra-wideband dual-polarized antenna oscillator of the present invention.
  • FIG. 4 is a schematic diagram of an embodiment of an ultra-wideband dual-polarized antenna of the present invention.
  • the schematic diagram of the structure of the broadband dual-polarized antenna oscillator of the present invention includes four radiating elements 2, a coupling connecting piece 7 for sequentially connecting the radiating elements, a supporting base 12, a grounding plate 13, and the same grounding.
  • the axis 21, the radiating element is a microstrip radiating element, the grounding plate 13 is a PCB structure, and the coupling connecting piece 7 is made of a metal piece.
  • the radiation unit 2 is mounted and fixed by tilting the support base 12 by 45 degrees.
  • the support base 12 is fixed to the four radiating elements 2 by snaps, and each radiating unit 2 is tilted at 45°.
  • the coupling piece 7 is connected to the radiation unit 2 in turn, and is fixed on the radiation unit 2 by rivets.
  • 8 is a coupling piece fixing hole, and the upper end of the coaxial line 21 is welded in the radiation unit 2, which is about five minutes longer than the upper end.
  • the antenna consists of four Pcb dipoles whose apex is at an angle of 45° to the horizontal plane.
  • the ⁇ 45° polarization consists of two opposite dipoles. Synthetic, this structure reduces the antenna aperture and improves the vibrator gain.
  • the length of the single vibrator is about 0.26 ⁇ ( ⁇ is the wavelength corresponding to the center frequency), and two adjacent vibrators are coupled by a metal coupling piece 7 , and the coupling piece 7 is further provided with a loading piece 6 . This structure reduces the antenna size.
  • the radiating element 2 comprises a double-sided metal-clad copper, which is a front non-frequency-varying graded structure 3 and a back-side non-frequency-varying graded structure 4, respectively, which are connected by uniformly arranged metallized vias 5.
  • the radiating element of the ultra-wideband dual-polarized antenna oscillator adopts a non-frequency-varying structure, and the antenna input impedance is kept constant in a wide frequency band, and has a broadband characteristic.
  • the via hole of the front non-frequency variable gradation structure 3 is a radiation unit and a coaxial inner core connection point 10
  • the through hole position of the reverse non-frequency variable gradation structure 4 is a radiation unit and a coaxial outer skin connection point 11 .
  • the feeder is a two-wire structure with a feed point to antenna distance of approximately 0.11 ⁇ .
  • the two-wire structure is a balanced structure and does not require an additional imbalance-balance conversion.
  • the antenna of the present invention includes a reflector 1 and at least one of the ultra-wideband dual-polarized antenna oscillators mounted on the reflector.
  • the radiating element 2 of the ultra-wideband dual-polarized antenna oscillator passes through the support base. 12 is fixed to the reflecting plate 1, which is fixed to the reflecting plate 1 by rivets, and the grounding plate 13 is fixed to the reflecting plate 1 by rivets.
  • a small-diameter vibrator is used to reduce the mutual influence between the vibrators and improve the overall performance of the array.
  • the support base 12 is a unitary plastic part, comprising eight buckles 14 for mounting the radiation unit, four support blocks for supporting the radiation unit 15, and four coaxial wire holders 17.
  • the upper end of the support base 12 is fastened to the radiating unit 2, and 9 is a snap fixing hole.
  • the lower end of the support base 12 is fixed to the reflector 1 by four holes 19, and the welding point of the coaxial line 21 is welded.
  • the wire holder 17 is inserted into the ground plate 13 through the wire holder 17, and the ground plate 13 is fixed to the reflection plate 1 by rivets.
  • grounding portion of the upper surface of the grounding plate 13 is directly connected to the outer conductor of the coaxial line, and the coaxial outer sheath is welded to the pad 18 on the grounding plate 13, and the rivet is fixed to the reflecting plate 1 via the grounding plate hole 16 .

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  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)

Abstract

提供一种超宽频双极化天线及其超宽频双极化天线振子，该超宽频双极化天线振子包括至少两个辐射单元、将辐射单元依次连接的耦合连接片、支撑座、接地板、接地的同轴线，该辐射单元通过支撑座固定，该至少两个辐射单元倾斜安装在支撑座上。该辐射单元与水平面形成夹角的倾斜安装，该结构降低了天线口径，提高了振子增益，结构更简单、尺寸更小，在满足性能要求的同时成本也较低；在相同反射板宽度的情况下，采用小口径振子，降低振子间的相互影响，提高了阵列的整体性能。

Description

超宽频双极化天线及其超宽频双极化天线振子 技术领域
[0001] 本发明涉及通讯领域， 特别是指一种超宽频双极化天线及其天线振子。
背景技术
[0002] 基站天线***是无线通信网络最重要的组成子***， 天线振子是天线上的元器 件， 具有导向和放大电磁波的作用， 使天线接收到的电磁信号更强。 随着移动 通信技术的发展， 基站天线的指标要求也在逐步提高。 传统的天线振子包括表 面辐射结构、 辐射耦合结构， 该表面辐射结构通过辐射耦合结构耦合连接， 由 于天线的尺寸与波长成正比关系， 传统技术的天线振子体积较大、 结构复杂、 增益低等缺点， 未能满足日益提高的天线指标要求。
[0003] 因此， 提供一种小尺寸、 高增益、 结构简单、 成本低的天线振子及采用这种天 线振子的天线实为必要。
技术问题
[0004] 本发明的目的在于提供一种小尺寸、 高增益、 结构简单、 成本低的超宽频双极 化天线振子。
[0005] 本发明的另一目的在于提供一种小尺寸、 高增益、 结构简单、 成本低的超宽频 双极化天线。
问题的解决方案
技术解决方案
[0006] 为实现本发明目的， 提供以下技术方案：
[0007] 提供一种超宽频双极化天线振子， 其包括至少两个辐射单元、 将辐射单元依次 连接的耦合连接片、 支撑座、 接地板、 接地的同轴线， 该辐射单元通过支撑座 固定， 该至少两个辐射单元倾斜安装在支撑座上。 该辐射单元与水平面形成夹 角的倾斜安装， 该结构降低了天线口径， 提高了振子增益， 结构更简单、 尺寸 更小， 在满足性能要求的同吋成本也较低； 在相同反射板宽度的情况下， 采用 小口径振子， 降低振子间的相互影响， 提高了阵列的整体性能。 [0008] 优选的， 该至少两个辐射单元倾斜 45度角安装在支撑座上。 该角度安装能够在 性能和尺寸的平衡达到最好的技术效果。
[0009] 优选的， 该接地板为 PCB结构。
[0010] 优选的， 该支撑座设有卡扣， 该至少两个辐射单元通过卡扣安装在支撑座上。
卡扣安装快捷简便。
[0011] 优选的， 该辐射单元包括两面金属覆铜， 分别为正面非频变渐变结构和背面非 频变渐变结构， 该两面金属覆铜由均匀排列的金属化过孔连接。 该超宽频双极 化天线振子的辐射单元采用非频变结构， 在较宽频带内保持天线输入阻抗不变
， 具有宽带特性。
[0012] 优选的， 该正面非频变渐变结构的过孔孔位为辐射单元与同轴线内芯连接点， 该反面非频变渐变结构的过孔孔位为辐射单元与同轴线外皮连接点。
[0013] 优选的， 其进一步包括同轴线的线座， 同轴线上端焊接于该辐射单元内， 同轴 线通过线座插于接地板中， 该接地板上表面接地部分与同轴线外导体直接连接
[0014] 优选的， 该支撑座通过铆钉固定在反射板上， 该接地板通过铆钉固定于反射板 上。
[0015] 优选的， 该超宽频双极化天线振子包括四个所述辐射单元， 每块辐射单元通过 所述耦合连接片依次连接， 耦合连接片采用金属片， 用金属片耦合相连。 耦合 连接片上还设有加载片。 该结构减小了天线尺寸。
[0016] 优选的， 该支撑座为一体化塑件， 包括安装辐射单元的卡扣、 承托辐射单元的 支撑块。
[0017] 本发明还提供了一种超宽频双极化天线， 其包括反射板、 至少一个安装在反射 板上的天线振子， 该天线振子采用如上所述的超宽频双极化天线振子， 该超宽 频双极化天线振子的辐射单元通过支撑座固定在反射板上， 该接地板固定在反 射板上。 该超宽频双极化天线振子的辐射单元与水平面形成夹角的倾斜安装， 该结构降低了天线口径， 提高了振子增益， 结构更简单、 尺寸更小， 在满足性 能要求的同吋成本也较低； 在相同反射板宽度的情况下， 采用小口径振子， 降 低振子间的相互影响， 提高了阵列的整体性能。 发明的有益效果
有益效果
[0018] 对比现有技术， 本发明具有以下优点：
[0019] 本发明的超宽频双极化天线振子将辐射单元与水平面形成夹角的倾斜安装， 该 结构降低了天线口径， 提高了振子增益， 结构更简单、 尺寸更小， 在满足性能 要求的同吋成本也较低； 在相同反射板宽度的情况下， 采用小口径振子， 降低 振子间的相互影响， 提高了阵列的整体性能。 该超宽频双极化天线振子的辐射 单元采用非频变结构， 在较宽频带内保持天线输入阻抗不变， 具有宽带特性。 馈线为双线结构， 双线结构为平衡结构， 不需要额外添加不平衡 -平衡转换。 采 用该超宽频双极化天线振子的超宽频双极化天线提高了振子增益， 结构更简单 、 尺寸更小、 成本也较低， 提高了阵列的整体性能。
对附图的简要说明
附图说明
[0020] 图 1为本发明超宽频双极化天线振子实施例的立体图；
[0021] 图 2为本发明超宽频双极化天线振子实施例的正面视图；
[0022] 图 3为本发明超宽频双极化天线振子实施例的背面视图；
[0023] 图 4为本发明超宽频双极化天线实施例的示意图。
本发明的实施方式
[0024] 请参阅图 1~3， 本发明宽频双极化天线振子结构示意图， 包括四个辐射单元 2、 将辐射单元依次连接的耦合连接片 7、 支撑座 12、 接地板 13、 接地的同轴线 21， 该辐射单元为微带辐射单元， 该接地板 13为 PCB结构， 该耦合连接片 7采用金属 片。 该辐射单元 2通过支撑座 12倾斜 45度安装固定。 支撑座 12上方通过卡扣分别 与四个辐射单元 2固定， 每块辐射单元 2呈 45°倾斜卡入。 耦合连接片 7依次连接辐 射单元 2， 并用铆钉固定于辐射单元 2之上， 图中 8为耦合连接片固定孔， 同轴线 21上端焊接于辐射单元 2内， 距上端约线长五分之一距离处焊接于接地板 13。 天 线由四块顶点与水平面 45°夹角的 Pcb偶极子组成， ±45°极化由两块相对的偶极子 合成， 该结构降低了天线口径， 提高了振子增益。 单个振子长度约为 0.26λ (λ为 中心频率所对应的波长） ， 两相邻振子用金属耦合连接片 7耦合相连， 该耦合连 接片 7上还设有加载片 6。 该结构减小了天线尺寸。
[0025] 该辐射单元 2包括两面金属覆铜， 分别为正面非频变渐变结构 3和背面非频变渐 变结构 4， 该两面金属覆铜由均匀排列的金属化过孔 5连接。 该超宽频双极化天 线振子的辐射单元采用非频变结构， 在较宽频带内保持天线输入阻抗不变， 具 有宽带特性。 该正面非频变渐变结构 3的过孔孔位为辐射单元与同轴线内芯连接 点 10， 该反面非频变渐变结构 4的过孔孔位为辐射单元与同轴线外皮连接点 11。 馈线为双线结构， 馈电点至天线距离约为 0.11λ。 双线结构为平衡结构， 不需要 额外添加不平衡 -平衡转换。
[0026] 请结合参阅图 4， 本发明天线包括反射板 1、 至少一个安装在反射板上的所述超 宽频双极化天线振子， 该超宽频双极化天线振子的辐射单元 2通过支撑座 12固定 在反射板 1上， 该支撑座 12通过铆钉固定在反射板 1上， 该接地板 13通过铆钉固 定于反射板 1上。 在相同反射板宽度的情况下， 采用小口径振子， 降低振子间的 相互影响， 提高了阵列的整体性能。
[0027] 该支撑座 12为一整体塑件， 包括 8个安装辐射单元的卡扣 14、 4个承托辐射单元 的支撑块 15， 4个同轴线线座 17。 支撑座 12上端卡扣 14固定辐射单元 2， 图中 9为 卡扣固定孔， 支撑座 12下端通过 4个孔位 19以铆钉固定于反射板 1上， 同轴线 21 馈电点焊接完后， 通过线座 17插于接地板 13中， 接地板 13通过铆钉固定于反射 板 1之上。 该接地板 13上表面接地部分与同轴线外导体直接连接， 同轴线外皮焊 接于接地板 13上的焊盘 18处， 铆钉经接地板孔位 16固定接地板于反射板 1上。
[0028] 以上所述仅为本发明的较佳实施例， 本发明的保护范围并不局限于此， 任何基 于本发明技术方案上的等效变换均属于本发明保护范围之内。

Claims

权利要求书
一种超宽频双极化天线振子， 其包括至少两个辐射单元、 将辐射单元 依次连接的耦合连接片、 支撑座、 接地板、 接地的同轴线， 该辐射单 元通过支撑座固定， 其特征在于， 该至少两个辐射单元倾斜安装在支 撑座上。
如权利要求 1所述的超宽频双极化天线振子， 其特征在于， 该至少两 个辐射单元倾斜 45度角安装在支撑座上。
如权利要求 1所述的超宽频双极化天线振子， 其特征在于， 该接地板 为 PCB结构。
如权利要求 1所述的超宽频双极化天线振子， 其特征在于， 该支撑座 设有卡扣， 该至少两个辐射单元通过卡扣安装在支撑座上。
如权利要求 1所述的超宽频双极化天线振子， 其特征在于， 该辐射单 元包括两面金属覆铜， 分别为正面非频变渐变结构和背面非频变渐变 结构， 该两面金属覆铜由均匀排列的金属化过孔连接。
如权利要求 5所述的超宽频双极化天线振子， 其特征在于， 该正面非 频变渐变结构的过孔孔位为辐射单元与同轴线内芯连接点， 该反面非 频变渐变结构的过孔孔位为辐射单元与同轴线外皮连接点。
如权利要求 6所述的超宽频双极化天线振子， 其特征在于， 其进一步 包括同轴线的线座， 同轴线上端焊接于该辐射单元内， 同轴线通过线 座插于接地板中， 该接地板上表面接地部分与同轴线外导体直接连接
[权利要求 8] 如权利要求 1所述的超宽频双极化天线振子， 其特征在于， 该天线振 子包括四个所述辐射单元， 每块辐射单元通过所述耦合连接片依次连 接， 该耦合连接片采用金属片， 耦合连接片上还设有加载片。
[权利要求 9] 如权利要求 8所述的超宽频双极化天线振子， 其特征在于， 该支撑座 为一体化塑件， 包括安装辐射单元的卡扣、 承托辐射单元的支撑块。
[权利要求 10] 一种超宽频双极化天线， 其包括反射板、 至少一个安装在反射板上的 天线振子， 其特征在于， 该天线振子采用如权利要求 1~9任意一项所 述的天线振子， 该天线振子的辐射单元通过支撑座固定在反射板上: 该接地板固定在反射板上。
PCT/CN2015/093762 2015-08-20 2015-11-04 超宽频双极化天线及其超宽频双极化天线振子 WO2017028379A1 (zh)

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