WO2018072744A1 - 一种天线振子 - Google Patents

一种天线振子 Download PDF

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Publication number
WO2018072744A1
WO2018072744A1 PCT/CN2017/107062 CN2017107062W WO2018072744A1 WO 2018072744 A1 WO2018072744 A1 WO 2018072744A1 CN 2017107062 W CN2017107062 W CN 2017107062W WO 2018072744 A1 WO2018072744 A1 WO 2018072744A1
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WIPO (PCT)
Prior art keywords
antenna element
antenna
vibrator
feed line
vibrator body
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PCT/CN2017/107062
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English (en)
French (fr)
Inventor
周杰
丁昱智
赵波
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上海诺基亚贝尔股份有限公司
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Application filed by 上海诺基亚贝尔股份有限公司 filed Critical 上海诺基亚贝尔股份有限公司
Priority to BR112019008026A priority Critical patent/BR112019008026A2/pt
Priority to US16/343,659 priority patent/US10957983B2/en
Priority to EP17862038.1A priority patent/EP3531504A4/en
Publication of WO2018072744A1 publication Critical patent/WO2018072744A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
    • H01Q9/285—Planar dipole
    • 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
    • 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
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • 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
    • 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

Definitions

  • the present invention relates to the field of antenna technologies, and in particular, to an antenna oscillator.
  • antenna dipoles As a key part of transmitting and receiving signals, play a key role in the performance and cost of the antenna.
  • the antenna oscillator currently used in the prior art has the following disadvantages:
  • the cost is higher.
  • the cost of existing antenna element assemblies comes primarily from the cost of a single vibrator body and the feeding line, as well as the cost of welding between the vibrator and the feeder.
  • the existing antenna vibrator uses a copper bar as a feed line, and after die casting the vibrator body, it is necessary to machine a stepped hole or the like to achieve impedance matching. This makes the manufacturing cost of the antenna vibrator very high, and the connection between the vibrator body and the feeder line is achieved by the top soldering, which easily causes the welding quality to be unstable.
  • the weight is heavier.
  • the weight of a single antenna element assembly is about 45g. Assuming a 1.3m side-by-side SBS antenna with 22 antenna elements, the antenna element weight accounts for 6.4% of the total weight of the antenna. The heavier the antenna, the stricter the requirements on its components. . This makes the weight of the antenna element a disadvantage in reducing the cost of the antenna.
  • an antenna element comprising a vibrator body and a feed line for connection to the vibrator body, wherein the vibrator body comprises an asymmetric blade feature.
  • the asymmetric blade features are elongated shapes.
  • the shape of the feed line can be adjusted to achieve impedance matching.
  • the antenna element further includes a plastic member, and the feed line is coupled to the vibrator body in a capacitive coupling manner by the plastic member.
  • the present invention has the following advantages: due to the use of asymmetric blade features, the cross polarization and voltage standing wave ratio (VSWR) performance of ⁇ 60° can be significantly improved, and the blade feature can be Designed to be elongated, this can greatly reduce the weight of the antenna vibrator and reduce the plating area, thereby reducing the weight and cost of the antenna using the antenna element, and facilitating the antenna assembly; impedance matching can be achieved by adjusting the shape of the feeder Therefore, it is not necessary to machine a stepped hole or the like after the die casting for the vibrator body; the feed line can be connected to the vibrator body by capacitive coupling by a plastic member, thereby not only reducing the welding cost, but also improving the PIM stability.
  • VSWR voltage standing wave ratio
  • FIG. 1 is a schematic structural view of an antenna element according to an example of the present invention.
  • FIG. 2 is a schematic structural view of another angle of the antenna element shown in FIG. 1;
  • Figure 3 is a side view of the antenna element shown in Figure 1;
  • Figure 4 is a plan view of the antenna element shown in Figure 1;
  • FIG. 5 is a schematic view showing a structure in which a plastic member is connected to a feed line in the antenna element shown in FIG. 1;
  • Figure 6 is a side view of the structure shown in Figure 5;
  • Fig. 7 is a schematic view showing the assembly of the antenna element shown in Fig. 1.
  • the present invention provides an antenna element, wherein the antenna element includes a vibrator body and a feed line for connection to the vibrator body, wherein the vibrator body includes an asymmetric blade feature.
  • the antenna element can be applied to all high frequency and low frequency base station antennas, and preferably, the antenna element is applied to high frequency ultra wide band.
  • the asymmetric wing feature structure is located on the blade of the vibrator body and is placed asymmetrically. It should be noted that “asymmetry” as used herein refers to non-central symmetry, that is, the blade feature structure is asymmetrically placed with respect to the center of the vibrator body.
  • the antenna based on the antenna element can significantly improve the cross polarization of ⁇ 60° and the VSWR (Voltage Standing Wave Ratio). ) Performance, greatly improving the quality of the antenna.
  • the asymmetric blade structure is a slim shape such as an elongated cylindrical shape or the like.
  • This preferred solution can greatly reduce the weight of the antenna element and reduce the plating area, thereby reducing the weight of the antenna using the antenna element, reducing the cost, and facilitating antenna assembly.
  • the feeder may adopt any feasible structure, such as a metal sheet structure or a die-cast structure.
  • the shape of the feed line can be adjusted, that is, the feed line adopts an adjustable shape structure such as an adjustable shape sheet metal structure or a die cast structure.
  • an adjustable shape structure such as an adjustable shape sheet metal structure or a die cast structure.
  • the antenna element further includes a plastic component
  • the feeder wire is coupled to the vibrator body by capacitive coupling in the plastic component, wherein the plastic component is used to provide media support for capacitive coupling.
  • the antenna element may comprise only one plastic piece. This saves a plastic part compared to the prior art, which further reduces assembly costs and simplifies the assembly process.
  • the plastic member comprises a snap structure for fixing other structures on the antenna element.
  • one plastic member includes three or more snap structures to ensure stability of the connection with other structures.
  • the antenna element is connected to the reflector in a screw connection.
  • the antenna element is fixed to the reflector by an M4 screw. This preferred solution ensures stability of the connection to the reflector, thereby providing more stable dynamic PIM performance.
  • FIG. 1 is a schematic structural view of an antenna vibrator according to a preferred embodiment of the present invention
  • FIG. 2 is a structural schematic diagram of another angle of the antenna vibrator of FIG. 1 , which is also a schematic structural view of the antenna vibrator shown in FIG. 1 upside down
  • FIG. 1 is a side view of the antenna element
  • FIG. 4 is a plan view of the antenna element shown in FIG. 1
  • FIG. 5 is a schematic view showing a structure in which the plastic part of the antenna element shown in FIG. 1 is connected to the feeder
  • Fig. 7 is a schematic view of the assembly of the antenna element shown in Fig. 1.
  • the antenna element comprises a vibrator body 101, a feed line 102 and a plastic member 103; wherein the vibrator body 101 comprises an asymmetric blade feature 104, as shown in Figure 2, two blades The feature structures 104 are respectively placed on two adjacent blades of the vibrator body; wherein the feed line 102 adopts an adjustable shape sheet metal structure; wherein the plastic member 103 includes four snap structures 105 for other assists The structure is fixed to the antenna element.
  • the cost is reduced by about 40% compared with the prior art, thereby reducing the antenna cost by about 15%; since the feeder is capacitively coupled with the oscillator
  • the body connection can remove the solder joints, thereby reducing the quality risk caused by poor soldering and avoiding PIM problems caused by insufficient soldering quality;
  • the antenna vibrator of this embodiment weighs about 30g, compared with the prior art 45g Compared with the antenna vibrator, the weight is reduced by about 33%, thereby reducing the total weight of the antenna; in addition, the shape and connection interface of the antenna element are similar to the existing antenna vibrator, and thus it is easy to replace in the existing antenna; According to the antenna element of the present embodiment, the antenna quality and the first pass yield (FPY) can be remarkably improved.

Abstract

本发明提供了一种天线振子，其中，所述天线振子包括振子本体以及用于连接至所述振子本体的馈线，其中，所述振子本体包括非对称的叶片特征结构。根据本发明的天线振子，能够明显提高±60°的交叉极化以及VSWR性能，且能够极大地减轻重量并降低装配成本。

Description

一种天线振子 技术领域
本发明涉及天线技术领域，尤其涉及一种天线振子。
背景技术
在天线技术领域中，天线振子(dipole)作为发射和接收信号的一个关键部分，对天线的性能和成本起着关键作用。而现有技术中当前应用的天线振子存在如下缺点：
1)成本较高。现有天线振子组件的成本主要来自：单个振子本体的成本和馈线(feeding line)，以及该振子和馈线之间的焊接成本。现有天线振子使用铜棒(copper bar)作为馈线，在对振子本体进行压铸(die casting)后需要再机加工阶梯孔等结构来实现阻抗匹配。这使得天线振子的制造成本非常高，且振子本体和馈线之间通过顶部焊接实现连接，容易造成焊接质量不稳定。
2)性能较低。对于现有天线振子来说，良好的焊接质量是性能稳定的前提，然而，焊接过程很难控制得很好，机加工步骤很难将阻抗匹配调整至与所需的一样，且对于不同批次的天线振子，机加工步骤并不稳定。
3)重量较重。单个天线振子组件的重量约为45g，假设采用具有22个天线振子的1.3m并排SBS天线，则天线振子重量占天线总重量的6.4％，而天线越重，对其部件的要求也就越严格。这使得天线振子的重量成为降低天线成本的一个不利因素。
针对上述缺点，现有技术中提出了如下的解决方案，但其效果并不理想：
1)在成本方面：对于表面处理，以镀锡(tin-plating)代替镀银(silver-plating)，以降低电镀成本；针对振子本体与馈线直接的连接，以回流焊接(reflow soldering)方式代替电阻焊接方式，整个天线振子组件可外包且与提供商协商振子组件的成本评估，以降低单个 振子本体以及天线振子组件的成本。
2)在性能方面：使用自动焊接设备来代替人工焊接方式，以提供焊接质量的稳定性。
发明内容
本发明的目的是提供一种新型高性能且低成本的天线振子。
根据本发明的一个方面，提供了一种天线振子，其中，所述天线振子包括振子本体以及用于连接至所述振子本体的馈线，其中，所述振子本体包括非对称的叶片特征结构。
根据本发明的一个方面，所述非对称的叶片特征结构为细长形状。
根据本发明的一个方面，所述馈线的形状可调整，以实现阻抗匹配。
根据本发明的一个方面，所述天线振子还包括塑料件，所述馈线通过所述塑料件以电容耦合方式与所述振子本体相连接。
与现有技术相比，本发明具有以下优点：由于采用了非对称的叶片特征结构，能够明显提高±60°的交叉极化以及电压驻波比(VSWR)性能，且所述叶片特征结构可设计为细长形状，这能够极大地减轻天线振子的重量且减少电镀面积，从而减轻使用所述天线振子的天线的重量和降低成本，且便于天线装配；可通过调整馈线的形状来实现阻抗匹配，从而无需针对振子本体在压铸之后再机加工阶梯孔等结构；所述馈线可通过塑料件以电容耦合方式与所述振子本体相连接，从而不仅能够减少焊接费用，且能够提高PIM稳定性。
附图说明
通过阅读参照以下附图所作的对非限制性实施例所作的详细描述，本发明的其它特征、目的和优点将会变得更明显：
图1为本发明一个示例的天线振子的结构示意图；
图2为图1所示天线振子的另一角度的结构示意图；
图3为图1所示天线振子的侧视图；
图4为图1所示天线振子的俯视图；
图5为图1所示天线振子中塑料件与馈线相连接所构成的结构的示意图；
图6为图5所示结构的侧视图；
图7为图1所示天线振子的装配示意图。
附图中相同或相似的附图标记代表相同或相似的部件。
具体实施方式
下面结合附图对本发明作进一步详细描述。
本发明提供了一种天线振子，其中，所述天线振子包括振子本体以及用于连接至所述振子本体的馈线，其中，所述振子本体包括非对称的叶片特征结构。其中，所述天线振子可应用于所有高频和低频基站天线，优选地，所述天线振子应用于高频超宽带。
其中，所述非对称的叶片特征(wing feature)结构位于振子本体的叶片上且非对称放置。需要说明的是，此处所述的“非对称”指的是非中心对称，也即所述叶片特征结构相对振子本体的中心非对称放置。
需要说明的是，由于天线振子中使用了所述非对称的叶片特征结构，使得基于所述天线振子的天线能够明显提高±60°的交叉极化以及VSWR(Voltage Standing Wave Ratio，电压驻波比)性能，大大提高了天线质量。
作为一种优选方案，所述非对称的叶片结构为细长(slim)形状，如细长的圆柱体形状等。该优选方案能够极大地减轻天线振子的重量且减少电镀面积，从而减轻使用所述天线振子的天线的重量，降低成本，且便于天线装配。
其中，所述馈线可采用任何可行结构，如钣金(metal sheet)结构或压铸结构等。
作为一种优选方案，所述馈线的形状可调整，也即，所述馈线采用可调整形状的结构，如可调整形状的钣金结构或压铸结构。该优选 方案使得无需针对偶极子本体在压铸之后再机加工阶梯孔等结构来实现阻抗匹配，也即，偶极子本体不作阻抗匹配，而是通过调整馈线的形状来实现阻抗匹配。
作为一种优选方案，所述天线振子还包括塑料件，所述馈线通过所述塑料件以电容耦合方式与所述振子本体相连接，其中，所述塑料件用于为电容耦合方式提供介质支撑。该优选方案不仅能够减少焊接费用，且能够提高PIM(Passive Inter Modulation，无源互调)稳定性。
更优选地，所述天线振子可仅包括一个塑料件。这相比现有技术能够节省一个塑料件，从而能够进一步降低装配成本，简化装配过程。
其中，所述塑料件包括卡扣结构，所述卡扣结构用于将其他结构固定在所述天线振子上。优选地，一个塑料件包括三个或以上的卡扣结构，以保证与其他结构之间的连接的稳定性。
作为一种优选方案，所述天线振子以螺丝连接方式连接至反射板。例如，天线振子通过一个M4螺丝固定在所述反射板上。该优选方案能够保证与反射板之间的连接的稳定性，从而提供更稳定的动态PIM性能。
图1为本发明一个优选实施例的天线振子的结构示意图，图2为图1天线振子的另一角度的结构示意图，也即将图1所示天线振子上下倒置后的结构示意图；图3为图1所示天线振子的侧视图；图4为图1所示天线振子的俯视图；图5为图1所示天线振子中塑料件与馈线相连接所构成的结构的示意图；图6为图5所示结构的侧视图；图7为图1所示天线振子的装配示意图。由图1至图7可见，所述天线振子包括振子本体101、馈线102以及一个塑料件103；其中，所述振子本体101包括非对称的叶片特征结构104，如图2所示，两个叶片特征结构104分别放置在振子本体的两个相邻叶片上；其中，所述馈线102采用可调整形状的钣金结构；其中，所述塑料件103包括四个卡扣结构105，以将其他辅助结构固定在该天线振子上。
根据本实施例的天线振子，相比现有技术降低了约40％的成本，进而降低了约15％的天线成本；由于馈线采用电容耦合方式与振子本 体相连接，可以去除焊点，从而能够减少由于焊接不良而带来的质量风险，避免由于焊接质量不足引起的PIM问题；本实施例的天线振子的重量约为30g，与现有技术45g的天线振子相比，减少了约33％的重量，进而减少了天线的总重量；此外，该天线振子的形状和连接接口与现有天线振子相似，因此在现有天线中很容易更换；并且，根据本实施例的天线振子，能够显著提高天线质量以及直通率(First Pass Yield，FPY)。
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化涵括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。此外，显然“包括”一词不排除其他单元或步骤，单数不排除复数。系统权利要求中陈述的多个单元或装置也可以由一个单元或装置通过软件或者硬件来实现。第一，第二等词语用来表示名称，而并不表示任何特定的顺序。

Claims (8)

  1. 一种天线振子，其中，所述天线振子包括振子本体以及用于连接至所述振子本体的馈线，其中，所述振子本体包括非对称的叶片特征结构。
  2. 根据权利要求1所述的天线振子，其中，所述非对称的叶片特征结构为细长形状。
  3. 根据权利要求1所述的天线振子，其中，所述馈线的形状可调整。
  4. 根据权利要求1或3所述的天线振子，其中，所述馈线采用钣金结构或压铸结构。
  5. 根据权利要求1所述天线振子，其中，所述天线振子还包括塑料件，所述馈线通过所述塑料件以电容耦合方式与所述振子本体相连接。
  6. 根据权利要求5所述的天线振子，其中，所述天线振子仅包括一个塑料件。
  7. 根据权利要求5或6所述的天线振子，其中，所述塑料件包括卡扣结构，所述卡扣结构用于将其他结构固定在所述天线振子上。
  8. 根据权利要求1所述的天线振子，其中，所述天线振子以螺丝连接方式连接至反射板。
PCT/CN2017/107062 2016-10-21 2017-10-20 一种天线振子 WO2018072744A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BR112019008026A BR112019008026A2 (pt) 2016-10-21 2017-10-20 oscilador de antena (dipolo)
US16/343,659 US10957983B2 (en) 2016-10-21 2017-10-20 Dipole
EP17862038.1A EP3531504A4 (en) 2016-10-21 2017-10-20 ANTENNA OSCILLATOR

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610920764.1A CN107978843B (zh) 2016-10-21 2016-10-21 一种天线振子
CN201610920764.1 2016-10-21

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