WO2017152349A1 - 一体式双极化吸顶天线 - Google Patents

一体式双极化吸顶天线 Download PDF

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Publication number
WO2017152349A1
WO2017152349A1 PCT/CN2016/075818 CN2016075818W WO2017152349A1 WO 2017152349 A1 WO2017152349 A1 WO 2017152349A1 CN 2016075818 W CN2016075818 W CN 2016075818W WO 2017152349 A1 WO2017152349 A1 WO 2017152349A1
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Prior art keywords
cone
feed plate
plate
polarized
horizontally polarized
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PCT/CN2016/075818
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English (en)
French (fr)
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丁俊涛
苏道一
叶保兵
许南盛
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广东曼克维通信科技有限公司
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Priority to PCT/CN2016/075818 priority Critical patent/WO2017152349A1/zh
Publication of WO2017152349A1 publication Critical patent/WO2017152349A1/zh

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    • 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
    • H01Q1/52—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

Definitions

  • the utility model relates to an antenna, in particular to a dual-polarized ceiling antenna.
  • the existing dual-polarized ceiling antenna is mainly a Hongxin mode.
  • the main disadvantages of the Catherine model and the Jingxin model are that the structure is complex and the isolation is low.
  • the structure of Catherine is simple, the horizontal polarization bandwidth is narrow and cannot adapt to new needs.
  • the structure of Jingxin is similar to that of Catherine. It is designed in horizontal polarization and vertical polarization. The structure is simpler than the rainbow mode.
  • the Catherine model is slightly more complicated, but the horizontal polarization bandwidth is improved, and the isolation is better than the former two.
  • the State Intellectual Property Office published the public number CN103682679A on March 26, 2014, and the patent name is dual-polarized suction.
  • the patent document of the top antenna includes a first joint, a second joint, and a metal reflector.
  • the inner conductor of the first joint is connected with the metal piece, and the metal piece passes through the medium piece and the first joint inner conductor passes through the medium in the first joint.
  • Forming a capacitive coupling with the bottom inner platform of the vibrating cup; the inner conductor of the second joint is connected to the top circuit on the feed circuit board via a connecting cable, and the dielectric plate of the feeding circuit board is located in the bottom circuit and the top circuit
  • the bottom layer is connected to the gap of the vibrating cup body, and the outer conductors of the first joint and the second joint are connected to the metal reflector.
  • the present invention uses a radiator while achieving horizontal polarization and vertical polarization, and ensures wide polarization and high isolation of both polarizations.
  • the purpose of the utility model is to overcome the deficiencies in the prior art and to provide an integrated dual-polarized ceiling antenna with wider bandwidth and capable of eliminating the malformation of vertical polarization circularity at a partial frequency point.
  • An integrated dual-polarized ceiling antenna comprising a reflector, a vertically polarized feed cable, a vertically polarized feed plate, a radiant cup, a horizontally polarized feed cable, and a horizontally polarized feed plate, said vertical polarization
  • the feeding cable is electrically connected to the vertically polarized feeding plate
  • the horizontally polarized feeding cable is electrically connected to the horizontally polarized feeding plate
  • the reflecting plate is grounded
  • the radiating cup body is composed of a cylindrical body and a bottom portion of the cylindrical body. a cone structure, wherein a plurality of slits parallel to the axial direction of the cylindrical body are distributed along the circumferential direction of the cylindrical wall of the cylindrical body, and the horizontally polarized feeding plate is disposed at The inside of the cylinder.
  • the central axis of the radiation cup is perpendicular to the reflector.
  • the distance between the horizontally polarized feed plate and the top of the cylindrical body is 2/5 to 3/5 of the length of the cylindrical body, and the optimal position is 1/2 of the length of the cylindrical body.
  • the number of the slots is twice the number of feeding branches of the horizontally polarized feed plate, and the gap is divided into an excitation slot group and an isolation slot group, and the slots in the excitation slot group correspond to the feeding branch
  • Each of the isolation gap groups is sequentially disposed between adjacent excitation slots for controlling coupling of adjacent radiation fields.
  • the vertically polarized feed plate is disposed in the cone of the radiation cup body and forms a capacitive coupling with the cone, and the vertically polarized feed cable penetrates from the bottom of the cone of the radiation cup and the vertically polarized feed plate Electrically connected, the horizontally polarized feed cable is electrically connected from the sidewall of the radiation cup to the horizontally polarized feed plate, the radiation cup being grounded.
  • the vertically polarized feed plate is disposed outside the cone of the radiation cup and electrically connected to the bottom of the cone, and the horizontally polarized feed cable is electrically connected from the bottom of the radiation cup to the horizontally polarized feed plate.
  • the cylindrical body of the radiation cup is grounded.
  • the cylindrical body is circular, and the cone is a cone.
  • the bandwidth is greatly increased; since the vertically polarized feed plate is disposed outside the cone of the radiation cup and electrically connected to the bottom of the cone, The horizontally polarized feed cable is electrically connected from the bottom of the radiation cup to the horizontally polarized feed plate, and the cylindrical body of the radiation cup is grounded to avoid horizontally polarized feed cables from the radiation cup.
  • the side wall of the cone passes through, thereby solving the problem that the vertical polarization roundness is deformed at a part of the frequency point; the gap on the radiation cup is in a double relationship with the branch of the feeding circuit, which is equivalent to having two kinds of slits, a set of gaps and The feeding branch corresponds to the excitation slit, and a group of slits exist independently.
  • the main function is to control the coupling of the adjacent radiation field, which is called the isolation gap, thereby greatly improving the practical application effect.
  • Embodiment 1 is a schematic structural view of Embodiment 1 of the utility model
  • Figure 2 is a plan view of the radiation cup shown in Figure 1;
  • Figure 3 is a plan view of the vertically polarized feed plate of Figure 1;
  • Figure 4 is a schematic structural view of a second embodiment of the utility model
  • Figure 5 is a plan view of the radiation cup shown in Figure 4.
  • an integrated dual-polarized ceiling antenna includes a reflector 1, a vertically polarized feed cable 2, a vertically polarized feed plate 3, a radiation cup 4, and a horizontal polarization feed.
  • a cable 5 and a horizontally polarized feed plate 6 the vertically polarized feed cable 2 is electrically connected to the vertically polarized feed plate 3, and the horizontally polarized feed cable 5 is electrically connected to the horizontally polarized feed plate 6 and reflected
  • the plate 1 is grounded, and the radiation cup 4 is composed of a cylindrical body 41 and a cone 42 provided at the bottom of the cylindrical body.
  • the cylindrical body 41 has a plurality of barrels distributed along the circumference of the cylinder.
  • the horizontally polarized feed plate 6 is disposed in the cylindrical body and at a distance of 1/2 of the length of the cylindrical body from the top of the cylindrical body.
  • the number of the slots 43 is twice the number of feed branches of the horizontally polarized feed plate, and the horizontally polarized feed plate 6 is provided with two feed branches, so the slit is provided.
  • the gap is divided into an excitation slot group and an isolation slot group, wherein the excitation slot group has two excitation slots 431, and each excitation slot 431 and a corresponding one of the feeding branches are shared by the isolation slot group.
  • Two isolation slits 432 are disposed between the adjacent excitation slits in order to control the coupling of the adjacent radiation fields. In other words, the excitation slits 431 and the isolation slits 432 are alternately distributed.
  • the horizontally polarized feed plate 6 is composed of a microstrip circuit layer, an isolation layer and a ground layer.
  • the microstrip circuit layer is disposed on the upper surface of the isolation layer, and the ground layer is disposed on the lower surface of the isolation layer.
  • the vertically polarized feed plate 3 is composed of a microstrip circuit layer 32, an isolation layer 31, and a ground layer 33.
  • the microstrip circuit layer 32 is disposed on the upper surface of the isolation layer 31, and the ground layer 33 is disposed on the isolation layer. The lower surface of 31.
  • the vertically polarized feed plate 2 is disposed outside the cone 42 of the radiation cup 4 through the microstrip circuit layer 32. And electrically connected to the bottom of the cone 42, the horizontally polarized feed cable 5 is electrically connected from the bottom of the radiation cup 4 to the horizontally polarized feed plate 6, the cylindrical body of the radiation cup being grounded.
  • the cylindrical body is circular, and may be a triangle, a quadrangle or other polygons depending on the occasion, and the cone is a cone.
  • an integrated dual-polarized ceiling antenna includes a reflector 1, a vertically polarized feed cable 2, a vertically polarized feed plate 3, a radiation cup 4, and a horizontal polarization feed.
  • the horizontally polarized feed plate 6 is disposed in the cylindrical body and at a distance of 1/2 of the length of the cylindrical body from the top of the cylindrical body.
  • the vertically polarized feed plate 3 is disposed in the cone 42 of the radiation cup 4 and forms a capacitive coupling with the cone 42.
  • the vertically polarized feed cable 2 penetrates from the bottom of the cone of the radiation cup 4. Electrically connected to the vertically polarized feed plate 5, the horizontally polarized feed cable 5 is electrically connected to the horizontally polarized feed plate 6 from the side wall of the radiation cup 4, and the radiation cup 4 is grounded.
  • the number of the slots 43 is twice the number of feed branches of the horizontally polarized feed plate, and the horizontally polarized feed plate 6 is three feed branches and three feeds.
  • the branch joints are evenly distributed along the circumference of the cylindrical body, so there are six slits, and the slits are divided into an excitation slit group and an isolation gap group, and the excitation slit group has three excitation slits 431, and each excitation slit 431 is Corresponding to one feeding branch, the isolation slit group has three isolation slits 432, and the isolation slits 432 are sequentially disposed between the adjacent excitation slits for controlling the coupling of the adjacent radiation fields, in other words, the excitation slits 431.
  • the horizontally polarized feed plate 6 is composed of a microstrip circuit layer, an isolation layer and a ground layer.
  • the microstrip circuit layer is disposed on the upper surface of the isolation layer, and the ground layer is disposed on the lower surface of the isolation layer.
  • Embodiment 1 Compared with Embodiment 2, Embodiment 1 adopts a mode of "horizontal polarization center feeding, vertical polarization side feeding", in order to avoid the influence of horizontally polarized feeders on vertical polarization, so that The radiation solution caused by the asymmetry of the side is better, so the technical solution of the embodiment 1 is better.
  • Example 2 is given to illustrate that the technical feature that the distance of the horizontally polarized feed plate from the top of the cylindrical body is 2/5 to 3/5 of the length of the cylindrical body can be applied to the "vertical polarization center”. Feed, horizontally polarized side feed mode.
  • the dual-polarized ceiling antenna of the present invention, the reflecting plate 1 and the radiation cup 4 may be made of various types of metal materials or other types of materials which are surface-plated with metal materials.
  • the dual-polarized ceiling antenna designed by the above structure uses a radiation cup body to achieve polarization in the vertical direction and the horizontal direction in the case where the reflection plate of the antenna is a horizontal plane, and ensures wide polarization and high isolation of the two polarizations.
  • the dual-polarized ceiling antenna product of the invention can be used for transmission of broadband signals, or
  • the indoor coverage applied to the mobile communication system can also be applied to other similar occasions, and the invention has the characteristics of simple structure, stable performance and low manufacturing cost.

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Abstract

本实用新型公开了一种一体式双极化吸顶天线，包括反射板、垂直极化馈电电缆、垂直极化馈电板、辐射杯体、水平极化馈电电缆和水平极化馈电板，反射板接地，辐射杯体是由筒状体以及设在筒状体底部的锥体构成，筒状体的筒壁上沿着周向间隔分布有多条与筒状体轴线方向平行的缝隙，水平极化馈电板设在所述筒状体内。由于将水平极化馈电板由筒状体的顶部移动筒状体内，大大增加了带宽；由于垂直极化馈电板设在辐射杯体的锥体外且与锥体的底部电连接，水平极化馈电电缆从辐射杯体的底部穿入与水平极化馈电板电连接，辐射杯体的筒状体接地，避免了水平极化馈电电缆从辐射杯体的锥体侧壁穿过，从而解决了垂直极化圆度在部分频率点有畸形的问题。

Description

一体式双极化吸顶天线 技术领域
本实用新型涉及一种天线，具体是一种双极化吸顶天线。
背景技术
现有的双极化吸顶天线主要是虹信模式。凯瑟琳模式和京信模式,虹信模式主要缺点是结构复杂,隔离度低。凯瑟琳模式虽然结构简单,但是水平极化带宽较窄,无法适应新的需要.京信模式结构与凯瑟琳略有相似,在水平极化上与垂直极化一体设计,结构比虹信模式简单,比凯瑟琳模式略复杂点,但是水平极化带宽有所提高,隔离度比前两者均优化,例如国家知识产权局于2014年3月26日公开了公开号为CN103682679A，专利名称为双极化吸顶天线的专利文献，本专利包括第一接头、第二接头、金属反射板，第一接头的内导体和金属片相连接，金属片通过介质片、第一接头内导体通过第一接头内介质与振子辐射杯体的底部内平台之间形成电容耦合；第二接头的内导体通过连接电缆与馈电电路板上的顶层电路相连接，馈电电路板的介质板位于底层电路和顶层电路之间，底层电路与振子辐射杯体的缝隙相连接，第一接头、第二接头的外导体均与金属反射板相连接。本发明使用一个辐射体，同时实现水平极化和垂直极化，且保证两极化的宽频带和高隔离度。
但上述检索到的专利也存在不足之处,水平极化带宽无法满足现在3G要求的带宽(1G)。此外，京信模式和凯瑟琳模式水平极化均为侧馈,对垂直极化不圆度有制约,垂直极化圆度在部分频率点有畸形。
实用新型内容
本实用新型的目的是克服现有技术中的不足，提供一种带宽更宽、并能消除垂直极化圆度在部分频率点存在的畸形的一体式双极化吸顶天线。
为实现上述目的，本实用新型所采用的技术方案是：
一体式双极化吸顶天线，包括反射板、垂直极化馈电电缆、垂直极化馈电板、辐射杯体、水平极化馈电电缆和水平极化馈电板，所述垂直极化馈电电缆与垂直极化馈电板电连接，水平极化馈电电缆与水平极化馈电板电连接，反射板接地，所述辐射杯体是由筒状体以及设在筒状体底部的锥体构成，所述筒状体的筒壁上沿着周向间隔分布有多条与筒状体轴线方向平行的缝隙，所述水平极化馈电板设在 所述筒状体内。
所述辐射杯体的中心轴垂直于所述反射板。
所述水平极化馈电板离筒状体顶部的距离为筒状体长度的2/5～3/5处,最佳位置为筒状体长度的1/2处。
所述缝隙的数量是水平极化馈电板的馈电支节数量的2倍，所述缝隙分为激励缝隙组和隔离缝隙组，所述激励缝隙组中的缝隙与馈电支节相对应，所述隔离缝隙组中的每个缝隙依次设在相临激励缝隙之间，用以控制临近辐射场的耦合。
所述垂直极化馈电板设在辐射杯体的锥体内，且与锥体之间形成电容耦合，垂直极化馈电电缆从辐射杯体的锥体底部穿入与垂直极化馈电板电连接，所述水平极化馈电电缆从辐射杯体的侧壁穿入与水平极化馈电板电连接，所述辐射杯体接地。
所述垂直极化馈电板设在辐射杯体的锥体外且与锥体的底部电连接，所述水平极化馈电电缆从辐射杯体的底部穿入与水平极化馈电板电连接，所述辐射杯体的筒状体接地。
所述筒状体为圆形，所述锥体为圆锥体。
本实用新型的有益效果：
由于将水平极化馈电板由筒状体的顶部移动筒状体内，大大增加了带宽；由于所述垂直极化馈电板设在辐射杯体的锥体外且与锥体的底部电连接，所述水平极化馈电电缆从辐射杯体的底部穿入与水平极化馈电板电连接，所述辐射杯体的筒状体接地，避免了水平极化馈电电缆从辐射杯体的锥体侧壁穿过，从而解决了垂直极化圆度在部分频率点有畸形的问题；辐射杯体上缝隙与馈电电路枝节成2倍关系，相当于有两种缝隙，一组缝隙与馈电枝节相对应—激励缝隙，一组缝隙独立存在，主要作用是控制临近辐射场的耦合，称隔离缝隙，从而大大改善了实际应用效果。
附图说明
下面结合附图和具体实施方式对本实用新型作进一步详细说明：
图1为实用新型实施例1的结构示意图；
图2为图1所示辐射杯体的俯视图；
图3为图1所示垂直极化馈电板的俯视图；
图4为实用新型实施例2的结构示意图；
图5为图4所示的辐射杯体的俯视图。
图中：1、反射板；2、垂直极化馈电电缆；3、垂直极化馈电板；31、隔离层；32、微带电路层；33、接地层；4、辐射杯体；5、水平极化馈电电缆；6、水平极化馈电板；41、筒状体；42、锥体；43、缝隙；431、激励缝隙；432、隔离缝隙。
具体实施方式
为了使本领域的技术人员更好地理解本实用新型的技术方案，下面结合附图和具体实施例对本实用新型作进一步详细的描述，需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
实施例1：如图1所示，一体式双极化吸顶天线，包括反射板1、垂直极化馈电电缆2、垂直极化馈电板3、辐射杯体4、水平极化馈电电缆5和水平极化馈电板6，所述垂直极化馈电电缆2与垂直极化馈电板3电连接，水平极化馈电电缆5与水平极化馈电板6电连接，反射板1接地，所述辐射杯体4是由筒状体41以及设在筒状体底部的锥体42构成，所述筒状体41的筒壁上沿着周向间隔分布有多条与筒状体轴线方向平行的缝隙43，所述辐射杯体4的中心轴垂直于所述反射板1。所述水平极化馈电板6设在筒状体内且离筒状体顶部的距离为筒状体长度的1/2处。
如图2所示，所述缝隙43的数量是水平极化馈电板的馈电支节数量的2倍，水平极化馈电板6采用的是两个馈电支节，故缝隙设有4个，所述缝隙分为激励缝隙组和隔离缝隙组，所述激励缝隙组中共有两个激励缝隙431，每个激励缝隙431与对应1个馈电支节，所述隔离缝隙组中共有两个隔离缝隙432，隔离缝隙432依次设在相临激励缝隙之间，用以控制临近辐射场的耦合，换句话说，激励缝隙431与隔离缝隙432交错分布。水平极化馈电板6是由微带电路层、隔离层和接地层，微带电路层设在隔离层的上表面，接地层设在隔离层的下表面。
如图3所示，垂直极化馈电板3是由微带电路层32、隔离层31和接地层33，微带电路层32设在隔离层31的上表面，接地层33设在隔离层31的下表面。
所述垂直极化馈电板2设在辐射杯体4的锥体42外通过微带电路层32 且与锥体42的底部电连接，所述水平极化馈电电缆5从辐射杯体4的底部穿入与水平极化馈电板6电连接，所述辐射杯体的筒状体接地。所述筒状体为圆形，根据不同场合，也可以是三角形，四边形或其他多边形，所述锥体为圆锥体。
实施例2：如图4所示，一体式双极化吸顶天线，包括反射板1、垂直极化馈电电缆2、垂直极化馈电板3、辐射杯体4、水平极化馈电电缆5和水平极化馈电板6，所述辐射杯体4的中心轴垂直于所述反射板1，反射板1接地。所述水平极化馈电板6设在筒状体内且离筒状体顶部的距离为筒状体长度的1/2处。所述垂直极化馈电板3设在辐射杯体4的锥体42内，且与锥体42之间形成电容耦合，垂直极化馈电电缆2从辐射杯体4的锥体底部穿入与垂直极化馈电板电连接，所述水平极化馈电电缆5从辐射杯体4的侧壁穿入与水平极化馈电板6电连接，所述辐射杯体4接地。
如图5所示，所述缝隙43的数量是水平极化馈电板的馈电支节数量的2倍，水平极化馈电板6采用的是3个馈电支节，3个馈电支节沿筒状体的圆周均匀分布，故缝隙设有6个，所述缝隙分为激励缝隙组和隔离缝隙组，所述激励缝隙组中共有3个激励缝隙431，每个激励缝隙431与对应1个馈电支节，所述隔离缝隙组中共有3个隔离缝隙432，隔离缝隙432依次设在相临激励缝隙之间，用以控制临近辐射场的耦合，换句话说，激励缝隙431与隔离缝隙432交错分布。水平极化馈电板6是由微带电路层、隔离层和接地层，微带电路层设在隔离层的上表面，接地层设在隔离层的下表面。
实施例1与实施例2相比，实施例1采用“水平极化中心馈电，垂直极化侧馈电”的模式，目的是为了避免水平极化馈电线对垂直极化的影响，使其边届不对称而带来的辐射畸形，故实施例1的技术方案更佳。只所以给出实施例2，以说明“水平极化馈电板离筒状体顶部的距离为筒状体长度的2/5～3/5处”这个技术特征可以应用在“垂直极化中心馈电，水平极化侧馈电”的模式下。
本发明的双极化吸顶天线，反射板1和辐射杯体4可以采用各种类型的金属材料，也可以是由表面镀金属材料的其他类型材料做成。
通过上述结构设计的双极化吸顶天线，在天线的反射板为水平面的情况下，使用一个辐射杯体实现垂直方向和水平方向的极化，且保证两极化的宽频带和高隔离度。本发明的双极化吸顶天线产品可使用在宽频信号的传输上，也可以 应用于移动通信系统的室内覆盖，也可以适用其他类似场合，本发明具有结构简单，性能稳定、制造成本低的特点。
总之，本实用新型虽然列举了上述优选实施方式，但是应该说明，虽然本领域的技术人员可以进行各种变化和改型，除非这样的变化和改型偏离了本实用新型的范围，否则都应该包括在本实用新型的保护范围内。

Claims (7)

  1. 一种一体式双极化吸顶天线，包括反射板、垂直极化馈电电缆、垂直极化馈电板、辐射杯体、水平极化馈电电缆和水平极化馈电板，所述垂直极化馈电电缆与垂直极化馈电板电连接，水平极化馈电电缆与水平极化馈电板电连接，反射板接地，所述辐射杯体是由筒状体以及设在筒状体底部的锥体构成，所述筒状体的筒壁上沿着周向间隔分布有多条与筒状体轴线方向平行的缝隙，其特征在于：所述水平极化馈电板设在所述筒状体内。
  2. 根据权利要求1所述的一体式双极化吸顶天线，其特征在于：所述辐射杯体的中心轴垂直于所述反射板。
  3. 根据权利要求1所述的一体式双极化吸顶天线，其特征在于：所述水平极化馈电板离筒状体顶部的距离为筒状体长度的2/5～3/5处。
  4. 根据权利要求1所述的一体式双极化吸顶天线，其特征在于：所述缝隙的数量是水平极化馈电板的馈电支节数量的2倍，所述缝隙分为激励缝隙组和隔离缝隙组，所述激励缝隙组中的缝隙与馈电支节相对应，所述隔离缝隙组中的每个缝隙依次设在相临激励缝隙之间，用以控制临近辐射场的耦合。
  5. 根据权利要求1所述的一体式双极化吸顶天线，其特征在于：所述水平极化馈电板设在辐射杯体的锥体内，且水平极化亏版板底层电路与锥体相连，水平极化馈电电缆从辐射杯体的锥体底部穿入与水平极化馈电板电路连接。
  6. 根据权利要求1所述的一体式双极化吸顶天线，其特征在于：所述垂直极化馈电板设在辐射杯体的锥体外且与锥体的底部电连接，所述水平极化馈电电缆从辐射杯体的底部穿入与水平极化馈电板电连接，所述辐射杯体的筒状体接地。
  7. 根据权利要求1所述的一体式双极化吸顶天线，其特征在于：所述筒状体为圆形，所述锥体为圆锥体，也可以任意多边型结构。
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