WO2012100488A1 - 一种mimo天线及其应用的移动终端 - Google Patents

一种mimo天线及其应用的移动终端 Download PDF

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Publication number
WO2012100488A1
WO2012100488A1 PCT/CN2011/075710 CN2011075710W WO2012100488A1 WO 2012100488 A1 WO2012100488 A1 WO 2012100488A1 CN 2011075710 W CN2011075710 W CN 2011075710W WO 2012100488 A1 WO2012100488 A1 WO 2012100488A1
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Prior art keywords
antenna
antennas
mimo
metal
metal component
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PCT/CN2011/075710
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English (en)
French (fr)
Inventor
张瑜
汪震
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中兴通讯股份有限公司
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Publication of WO2012100488A1 publication Critical patent/WO2012100488A1/zh

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/52Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/28Combinations 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 a secondary device in the form of two or more substantially straight conductive elements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/28Combinations of substantially independent non-interacting antenna units or systems

Definitions

  • the present invention relates to antenna technology, and more particularly to a MIMO (Multi-Input Multiple-Output) antenna and a mobile terminal thereof.
  • MIMO Multi-Input Multiple-Output
  • MIMO wireless communication technology namely: MIMO wireless communication technology. Both the transmitting end and the receiving end of the MIMO antenna use multiple antenna units.
  • MIMO wireless communication technology By using advanced wireless transmission and signal processing technology, multipath propagation of the wireless channel can be used to double the wireless without increasing bandwidth and transmitting power. Communication quality and data rate.
  • each antenna unit required to have good performance, but also mutual interference between the two antennas is required to be well solved. Due to the electromagnetic coupling of the two adjacent antenna elements, the current distribution on the antenna is distorted, causing a change in the radiation pattern and the impedance of the antenna. Moreover, the closer the distance between the two antennas, the stronger the coupling effect, which means that the lower the isolation between the two antennas, the lower the radiation efficiency of the antenna and the higher the correlation coefficient. Moreover, at present, the size of mobile terminal devices is getting smaller and smaller, making the implementation of low correlation coefficient and high isolation of MIMO antennas more difficult. Summary of the invention
  • the main object of the present invention is to provide a MIMO antenna and a mobile terminal for the same, which can reduce the correlation coefficient between antennas in a limited space, thereby improving the isolation between the antennas.
  • the present invention provides a MIMO antenna, comprising: two or more antennas, a feeding system, a matching circuit, and a printed circuit board (PCB).
  • a MIMO antenna comprising: two or more antennas, a feeding system, a matching circuit, and a printed circuit board (PCB).
  • PCB printed circuit board
  • the MIMO antenna further includes: a metal component; wherein
  • the metal component is suspended between the two adjacent antennas or outside;
  • the metal component is used as a reflector or director of the antenna.
  • the metal member is one or more.
  • the metal member has a rectangular shape, a cylindrical shape or a spiral shape.
  • two or more of the metal members are disposed for each of the antennas.
  • the MIMO antenna further includes a plastic outer casing
  • the metal component is attached to the plastic housing or printed on the PCB.
  • the present invention also provides a mobile terminal, the mobile terminal comprising: a casing, a main board, and
  • the MIMO antenna includes: two or more antennas, a feeding system, a matching circuit, and a PCB, the MIMO antenna further comprising: a metal component;
  • the metal component is suspended between the two adjacent antennas or outside;
  • the metal component is used as a reflector or director of the antenna.
  • the MIMO antenna and the mobile terminal of the same provide a metal component between or between two adjacent antennas as a reflector or a director of the antenna, so that the radiation pattern of the antenna can be changed, and the adjacent
  • the coupling between the antennas can reduce the correlation coefficient between the antennas in a limited space, thereby improving the isolation between the antennas.
  • two or more metal parts of different lengths are arranged for each antenna, according to the metal parts.
  • the coefficient which in turn increases the isolation between the antennas.
  • FIG. 1 is a schematic structural diagram of a MIMO antenna according to Embodiment 1;
  • FIG. 2 is a schematic structural diagram of a MIMO antenna according to Embodiment 2;
  • FIG. 3 is a schematic structural diagram of a MIMO antenna according to Embodiment 3;
  • FIG. 4 is a schematic structural diagram of a MIMO antenna according to Embodiment 4.
  • FIG. 5 is a schematic structural diagram of a MIMO antenna according to Embodiment 5. detailed description
  • the MIMO antenna of the present invention includes: two or more antennas, a feeding system configured for each antenna, a matching circuit configured for each antenna, a PCB, and a metal member;
  • the metal component is disposed between or outside the two adjacent antennas and is suspended; wherein the suspended placement means that the metal component is neither grounded nor fed, so as to be a reflection of the antenna Or director;
  • a metal member for acting as a reflector or a director of the antenna; specifically, when the metal member is disposed between two adjacent antennas, the metal member functions as the antenna a reflector; when the metal component is disposed outside the two adjacent antennas, the metal component serves as a director of the antenna;
  • the reflector functions to attenuate an electric wave received by the antenna or an electric wave emitted by the antenna; the director acts to enhance an electric wave received by the antenna or an electric wave emitted by the antenna. .
  • the metal component may be any metal material such as copper, stainless steel, etc.;
  • the shape of the metal member may be a rectangular sheet shape, a cylindrical shape, a spiral shape, or the like. It is a commonly used monopole antenna or dipole antenna;
  • the feeding system is configured to feed the antenna, which is completely the same as the feeding system in the prior art;
  • the matching circuit is used for the antenna matching debugging, and is identical to the matching circuit in the prior art.
  • the number of the metal members may be one or more as needed.
  • the present invention will be further described in detail below with reference to the embodiments.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the MIMO antenna of the present embodiment includes: a first antenna 11, a second antenna 12, and a first power feeding system configured for the first antenna 11. 13.
  • a second feed system 14 configured for the second antenna 12, a first matching circuit 15 configured for the first antenna 11, a second matching circuit 16 configured for the second antenna 12, a PCB 17, a metal component 18, and Plastic housing 19;
  • the first antenna 11 is connected to the first power feeding system 13 through the first matching circuit 15, and the second antenna 12 is connected to the second power feeding system 14 through the second matching circuit 16, and the first antenna 11 and the second antenna 12 are parallel.
  • a metal component 18 is placed in parallel between the first antenna 11 and the second antenna 12, that is, the metal component 18 is parallel to the first antenna 11 and the second antenna 12; the shape of the metal component 18 can be It is a rectangular sheet, a cylinder or a spiral.
  • the first antenna 11 and the second antenna 12 may be a monopole antenna or a dipole antenna.
  • the metal component 18 is suspended and can be fixed on the plastic casing 19, or can be directly printed on the PCB 17; here, the fixing method can adopt the hot melt method or the adhesive method; the specific printing process and the existing printing process It's exactly the same.
  • the fixing method can adopt the hot melt method or the adhesive method; the specific printing process and the existing printing process It's exactly the same.
  • the reflector may determine the length of the metal component 18 and the distance between the first antenna 11 and the second antenna 12 according to the principle of the Yagi antenna; wherein, the principle of the Yagi antenna is described in the electronic industry press. "antenna".
  • the directions of the maximum directions of the radiation patterns of the first antenna 11 and the second antenna 12 can be reversed, thereby reducing the correlation coefficient between the first antenna 11 and the second antenna 12, and improving the relationship between the two antennas. Isolation.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • FIG. 2 is a schematic structural diagram of a MIMO antenna according to the embodiment.
  • the MIMO antenna structure in this embodiment is different from the MIMO antenna structure in the first embodiment: between the first antenna 11 and the second antenna 12.
  • Two metal members 18 are placed as reflectors for the first antenna 11 and the second antenna 12, respectively.
  • each metal component 18 Before placing the metal component 18, it is necessary to determine the length of each metal component 18 and the distance between each metal component 18 and its corresponding antenna, so that the two metal components 18 can be used as the first after being placed.
  • the specific processing of determining the length of each metal member 18 and the distance between each metal member 18 and its corresponding antenna is the same as that in the first embodiment, where the reflectors of the antenna 11 and the second antenna 12 are identical. No longer.
  • the directions of the maximum directions of the radiation patterns of the first antenna 11 and the second antenna 12 can be reversed, thereby reducing the correlation coefficient of the first antenna 11 and the second antenna 12, and improving the two antennas.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • a plurality of metal components can be added between the two antennas, that is, two or more metal components having different lengths can be configured for each antenna, and the structure of the MIMO antenna as shown in FIG. 3 is formed.
  • the metal part 18 can be used as a reflector for different frequency bands. At this time, it is suitable for a wideband MIMO antenna system.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • FIG. 4 is a schematic structural diagram of a MIMO antenna according to the embodiment.
  • the MIMO antenna structure in this embodiment is different from the MIMO antenna structure in the second embodiment: two metal components 18 are placed on the first antenna 11 and The outer side of the second antenna 12 is parallel to the first antenna 11 and the second antenna 12.
  • the metal component 18 is suspended, can be attached to the plastic housing 19, and can be printed directly onto the PCB 17; wherein the specific printing process is identical to the existing printing process.
  • each metal component 18 Before placing the metal component 18, it is necessary to determine the length of each metal component 18 and the distance between each metal component 18 and its corresponding antenna, so that after the two metal components 18 are placed, they can serve as the first antenna 11 and The director of the second antenna 12, specifically, the length of each metal component 18 and the distance between each metal component 18 and its corresponding antenna can be determined according to the principle of the Yagi antenna; wherein, the principle of the Yagi antenna is detailed. See “Antenna” published by Electronic Industry Press.
  • the directions of the maximum directions of the radiation patterns of the first antenna 11 and the second antenna 12 can be reversed, thereby reducing the correlation coefficient of the first antenna 11 and the second antenna 12, and improving the two antennas.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • a plurality of metal members can be added outside the two antennas, that is, two or more metal members having different lengths can be disposed for each antenna, thereby forming a structure of the MIMO antenna as shown in FIG.
  • the metal part 18 it can be used as a director for different frequency bands. In this case, it is suitable for a wideband MIMO antenna system.
  • the existing MIMO antenna two antenna units are generally included. If more than three antenna units are included, the two adjacent antennas can be considered together to determine the metal portion.
  • the length of the piece and the position where the metal part is placed For example, if there are three antenna elements, considering the space and data transmission rate, the position of the three antenna elements generally forms a triangular shape.
  • the metal component is placed as a director of the antenna to place the metal component, thereby achieving the purpose of reducing the correlation coefficient between adjacent antennas and improving the isolation between the antennas.
  • the present invention further provides a mobile terminal, including: a casing, a motherboard, and a MIMO antenna;
  • the MIMO antenna includes: two or more antennas, a feeding system configured for each antenna, a matching circuit configured for each antenna, a PCB, and a metal component;
  • the metal component is disposed between or outside the two adjacent antennas and is suspended; wherein the suspended component means: the metal component is neither grounded nor fed, so as to be capable of being used as the antenna a reflector or a director;
  • a metal member for acting as a reflector or a director of the antenna; specifically, when the metal member is disposed between two adjacent antennas, the metal member functions as the antenna a reflector; when the metal member is disposed outside the two adjacent antennas, the metal member serves as a director of the antenna.
  • the metal member may be any metal material such as copper, stainless steel or the like; the metal member may have a rectangular sheet shape, a cylindrical shape or a spiral shape. It is a commonly used monopole antenna or dipole antenna;
  • the feeding system is configured to feed the antenna, which is completely the same as the feeding system in the prior art;
  • the matching circuit is used for the antenna matching debugging, and is identical to the matching circuit in the prior art.
  • the number of the metal members may be one or more.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

本发明公开了一种多入多出(MIMO)天线,包括:两个以上天线、馈电系统、匹配电路、以及印刷电路板(PCB),该天线还包括:金属部件;所述金属部件悬空放置于相邻的两个所述天线之间或外侧;所述金属部件,用于作为所述天线的反射器或引向器。本发明同时公开了一种移动终端,采用本发明的MIMO天线及移动终端,能改变天线的辐射方向图,降低相邻天线之间的耦合作用,从而能在有限的空间里降低天线之间的相关性系数,进而提升天线之间的隔离度。

Description

一种 MIMO天线及其应用的移动终端 技术领域
本发明涉及天线技术, 特别是指一种多输入多输出 (MIMO , Multiple-Input Multiple-Out-put ) 天线及其应用的移动终端。 背景技术
随着无线通信技术的快速发展, 移动用户对无线通信的容量及质量的 要求越来越高, 由于目前的无线信道存在多径衰落、 频谱拥挤、 以及噪声 干扰等问题, 大大影响了数据速率的提高。 为了进一步提高系统的容量, 人们提出了天线分集技术, 而分集技术的进一步发展随即产生了 MIMO系 统, 即: MIMO无线通信技术。 MIMO天线的发射端与接收端均釆用多天 线单元, 运用先进的无线传输与信号处理技术, 利用无线信道的多径传播, 能实现在不增加带宽及发射功率的条件下, 成倍提高无线通信的质量及数 据速率。
目前, 在 MIMO天线的设计中, 为了实现良好的 MIMO性能, 不仅要 求每个天线单元具有良好的性能, 而且要求两个天线之间的相互干扰也要 得到良好的解决。 由于临近的两个天线单元的电磁耦合使得天线上的电流 分布发生畸变, 从而引起辐射方向图和天线的阻抗发生变化。 并且, 两个 天线之间的距离越近, 耦合作用就越强, 这也就意味着两个天线之间的隔 离度越低, 天线的辐射效率就越低, 相关性系数就越高。 而且, 目前, 移 动终端设备的体积越来越小, 从而使得 MIMO天线的低相关性系数和高隔 离度的实现变得更加困难。 发明内容
有鉴于此, 本发明的主要目的在于提供一种 MIMO天线及其应用的移 动终端, 能在有限的空间里降低天线之间的相关性系数, 进而提升天线之 间的隔离度。
为达到上述目的, 本发明的技术方案是这样实现的:
本发明提供了一种 MIMO天线, 该 MIMO天线包括: 两个以上天线、 馈电系统、 匹配电路、 以及印刷电路板( PCB , Printed Circuit Board ) , 该
MIMO天线还包括: 金属部件; 其中,
所述金属部件悬空放置于相邻的两个所述天线之间或外侧;
所述金属部件, 用于作为所述天线的反射器或引向器。
上述方案中, 所述金属部件为一个以上。
上述方案中, 所述金属部件的形状为矩形、 圓柱形或螺旋状。
上述方案中, 为每个所述天线配置两个以上所述金属部件。
上述方案中, 该 MIMO天线还包括塑料外壳;
所述金属部件固定于所述塑料外壳上或印刷在所述 PCB上。
本发明还提供了一种移动终端, 该移动终端包括: 外壳、 主板、 以及
MIMO天线; MIMO天线包括: 两个以上天线、 馈电系统、 匹配电路、 以 及 PCB, 该 MIMO天线还包括: 金属部件; 其中,
所述金属部件悬空放置于相邻的两个所述天线之间或外侧;
所述金属部件, 用于作为所述天线的反射器或引向器。
本发明提供的 MIMO天线及其应用的移动终端, 在相邻的两个天线之 间或外侧设置金属部件, 作为天线的反射器或引向器, 如此, 能改变天线 的辐射方向图, 降低相邻天线之间的耦合作用, 从而能在有限的空间里能 降低天线之间的相关性系数, 进而提升天线之间的隔离度。
另外, 为每个天线配置两个以上长度不同的金属部件, 根据金属部件 长度的不同, 作为不同频段的反射器或引向器使用, 如此, 能降低宽频带 的 MIMO天线系统中相邻天线之间的耦合作用, 从而在有限的空间里能降 低天线之间的相关性系数, 进而提升天线之间的隔离度。 附图说明
图 1为实施例一的 MIMO天线的结构示意图;
图 2为实施例二的 MIMO天线的结构示意图;
图 3为实施例三的 MIMO天线的结构示意图;
图 4为实施例四的 MIMO天线的结构示意图;
图 5为实施例五的 MIMO天线的结构示意图。 具体实施方式
下面结合附图及具体实施例对本发明再作进一步详细的说明。
本发明的 MIMO天线包括: 两个以上天线、 为每个天线配置的馈电系 统、 为每个天线配置的匹配电路、 PCB、 以及金属部件; 其中,
所述金属部件设置于相邻的两个所述天线之间或外侧, 且悬空放置; 这里, 所述悬空放置是指所述金属部件既不接地也不馈电, 以便能作 为所述天线的反射器或引向器;
所述金属部件, 用于充当所述天线的反射器或引向器; 具体地, 当所 述金属部件设置于相邻的两个所述天线之间时, 所述金属部件作为所述天 线的反射器; 当所述金属部件设置于相邻的两个所述天线外侧时, 所述金 属部件作为所述天线的引向器;
其中, 所述反射器起着削弱所述天线接收到的电波或所述天线发射的 电波的作用; 所述引向器起着增强所述天线接收到的电波或所述天线发射 的电波的作用。
所述金属部件可以是任何一种金属材料, 比如: 铜、 不锈钢等; 所述 金属部件的形状可以是矩形片状、 圓柱形或螺旋状等。 是常用的单极子天线或偶极子天线等;
所述馈电系统, 用于给所述天线馈电, 与现有技术中的馈电系统完全 相同;
所述匹配电路, 用于供所述天线匹配调试使用, 与现有技术中的匹配 电路完全相同。
在实际应用时, 根据需要, 所述金属部件的个数可以是一个以上。 下面结合实施例对本发明再作进一步详细的描述。
实施例一:
本实施例在现有技术的 MIMO天线系统设计方案的基础上, 增加设置 金属部件, 构成天线的反射器。 图 1为本实施例的 MIMO天线的结构示意 图, 从图 1中可以看出, 本实施的 MIMO天线包括: 第一天线 11、 第二天 线 12、 为第一天线 11配置的第一馈电系统 13、 为第二天线 12配置的第二 馈电系统 14、 为第一天线 11配置的第一匹配电路 15、 为第二天线 12配置 的第二匹配电路 16、 PCB 17、 金属部件 18、 以及塑料外壳 19;
其中, 第一天线 11通过第一匹配电路 15与第一馈电系统 13连接, 第 二天线 12通过第二匹配电路 16与第二馈电系统 14连接, 第一天线 11及 第二天线 12平行放置于 PCB 17的两侧, 在第一天线 11与第二天线 12之 间平行放置一个金属部件 18, 即: 金属部件 18与第一天线 11及第二天线 12平行; 金属部件 18的形状可以是矩形片状、 圓柱形或螺旋状等。
第一天线 11及第二天线 12可以是单极子天线或偶极子天线。
金属部件 18悬空放置, 可以固定于塑料外壳 19上, 或者, 可以直接 印刷在 PCB 17上; 这里, 固定的方式可以釆用热熔方式或背胶方式; 具体 的印刷过程与现有的印刷过程完全相同。 在放置金属部件 18之前, 需要确定金属部件 18的长度、 以及与第一 天线 11及第二天线 12之间的距离, 使金属部件 18在放置后作为第一天线 11及第二天线 12的公用反射器, 具体地, 可以依据八木天线的原理分别确 定金属部件 18的长度、 以及与第一天线 11及第二天线 12之间的距离; 其 中, 八木天线的原理详见电子工业出版社出版的 《天线》。
放置金属部件 18后, 能使得第一天线 11及第二天线 12的辐射方向图 的最大方向的指向相反, 从而降低第一天线 11及第二天线 12的相关性系 数, 提高两个天线之间的隔离度。
实施例二:
图 2为本实施例的 MIMO天线的结构示意图, 从图 2中可以看出, 本 实施例与实施例一中的 MIMO天线结构所不同的是:在第一天线 11与第二 天线 12之间放置两个金属部件 18,分别作为第一天线 11及第二天线 12的 反射器。
同样的, 在放置金属部件 18之前, 需要确定每个金属部件 18的长度、 以及每个金属部件 18与其对应的天线之间的距离, 使两个金属部件 18在 放置后, 可以分别作为第一天线 11及第二天线 12的反射器, 确定每个金 属部件 18的长度、 以及每个金属部件 18与其对应的天线之间的距离的具 体处理过程与实施例一中的处理过程完全相同, 这里不再赘述。
放置两个金属部件 18后, 能使得第一天线 11及第二天线 12的辐射方 向图的最大方向的指向相反, 从而降低第一天线 11及第二天线 12的相关 性系数, 提高两个天线之间的隔离度。
实施例三:
根据实施例二, 还可以在两个天线之间增加多个金属部件, 即: 可以 为每个天线配置两个以上长度不同的金属部件,则形成如图 3所示的 MIMO 天线的结构。 根据金属部件 18长度的不同, 可以作为不同频段的反射器使 用, 此时, 适用于宽频带 MIMO天线系统。
实施例四:
本实施例在现有技术的 MIMO天线系统设计方案的基础上, 增加设置 金属部件, 构成天线的引向器。 图 4为本实施例的 MIMO天线的结构示意 图, 从图 4中可以看出, 本实施例与实施例二中的 MIMO天线结构所不同 的是: 两个金属部件 18放置于第一天线 11及第二天线 12的外侧, 且平行 于第一天线 11及第二天线 12。
同样的, 金属部件 18悬空放置, 可以固定于塑料外壳 19上, 还可以 直接印刷在 PCB 17上;其中,具体的印刷过程与现有的印刷过程完全相同。
在放置金属部件 18之前, 需要确定每个金属部件 18的长度、 以及每 个金属部件 18与其对应的天线之间的距离, 使两个金属部件 18在放置后, 可以分别作为第一天线 11及第二天线 12的引向器, 具体地, 可以依据八 木天线的原理分别确定每个金属部件 18的长度、 以及每个金属部件 18与 其对应的天线之间的距离; 其中, 八木天线的原理详见电子工业出版社出 版的 《天线》。
放置两个金属部件 18后, 能使得第一天线 11及第二天线 12的辐射方 向图的最大方向的指向相反, 从而降低第一天线 11及第二天线 12的相关 性系数, 提高两个天线之间的隔离度。
实施例五:
根据实施例四, 还可以在两个天线的外侧增加多个金属部件, 即: 可 以为每个天线配置两个以上长度不同的金属部件, 则形成如图 5 所示的 MIMO天线的结构。 根据金属部件 18长度的不同, 可以作为不同频段的引 向器使用, 此时, 适用于宽频带 MIMO天线系统。
在现有的 MIMO天线中, 一般包括两个天线单元, 如果包含三个以上 天线单元时, 则可以釆用两两相邻的天线之间进行考虑, 从而确定金属部 件的长度及金属部件所放置的位置, 举个例子来说, 如果存在三个天线单 元, 考虑到空间及数据的传输速率, 一般三个天线单元的位置形成三角形 状, 此时, 可以釆用金属部件作为天线的引向器的方式放置金属部件, 从 而实现降低相邻天线之间的相关系数, 提高天线之间的隔离度的目的。
这里, 需要说明的是: 本发明的 MIMO天线, 天线发射电波及接收电波 的处理流程与现有技术完全相同。
基于上述 MIMO天线, 本发明又提供了一种移动终端, 包括: 外壳、 主板、 以及 MIMO天线;
MIMO 天线包括: 两个以上天线、 为每个天线配置的馈电系统、 为每 个天线配置的匹配电路、 PCB、 以及金属部件; 其中,
所述金属部件设置于相邻的两个所述天线之间或外侧, 且悬空放置; 这里, 所述悬空放置是指: 所述金属部件既不接地也不馈电, 以便能 作为所述天线的反射器或引向器;
所述金属部件, 用于充当所述天线的反射器或引向器; 具体地, 当所 述金属部件设置于相邻的两个所述天线之间时, 所述金属部件作为所述天 线的反射器; 当所述金属部件设置于相邻的两个所述天线外侧时, 所述金 属部件作为所述天线的引向器。
所述金属部件可以是任何一种金属材料, 比如: 铜、 不锈钢等; 所述 金属部件的形状可以是矩形片状、 圓柱形或螺旋状等。 是常用的单极子天线或偶极子天线等;
所述馈电系统, 用于给所述天线馈电, 与现有技术中的馈电系统完全 相同;
所述匹配电路, 用于供所述天线匹配调试使用, 与现有技术中的匹配 电路完全相同。 所述金属部件的个数可以是一个以上。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围, 凡在本发明的精神和原则之内所作的任何修改、 等同替换和改进 等, 均应包含在本发明的保护范围之内。

Claims

权利要求书
1、 一种多输入多输出 ( MIM0 )天线, 该 MIM0天线包括: 两个以上 天线、 馈电系统、 匹配电路、 以及印刷电路板(PCB ), 其特征在于, 该 MIMO天线还包括: 金属部件; 其中,
所述金属部件悬空放置于相邻的两个所述天线之间或外侧;
所述金属部件, 用于作为所述天线的反射器或引向器。
2、根据权利要求 1所述的 MIMO天线, 其特征在于, 所述金属部件为 一个以上。
3、根据权利要求 1所述的 MIMO天线, 其特征在于, 所述金属部件的 形状为矩形、 圓柱形或螺旋状。
4、根据权利要求 2所述的 MIMO天线, 其特征在于, 为每个所述天线 配置两个以上所述金属部件。
5、 根据权利要求 1至 4任一项所述的 MIMO天线, 其特征在于, 该 MIMO天线还包括塑料外壳;
所述金属部件固定于所述塑料外壳上或印刷在所述 PCB上。
6、 一种移动终端, 该移动终端包括: 外壳、 主板、 以及 MIMO天线; MIMO天线包括: 两个以上天线、 馈电系统、 匹配电路、 以及 PCB, 其特 征在于, 该 MIMO天线还包括: 金属部件; 其中,
所述金属部件悬空放置于相邻的两个所述天线之间或外侧;
所述金属部件, 用于作为所述天线的反射器或引向器。
7、 根据权利要求 6所述的移动终端, 其特征在于, 所述金属部件为一 个以上。
8、 根据权利要求 6所述的移动终端, 其特征在于, 所述金属部件的形 状为矩形、 圓柱形或螺旋状。
9、 根据权利要求 7所述的移动终端, 其特征在于, 为每个所述天线配 置两个以上所述金属部件。
10、 根据权利要求 6至 9任一项所述的移动终端, 其特征在于, 所述 MIMO天线还包括塑料外壳;
所述金属部件固定于所述塑料外壳上或印刷在所述 PCB上。
PCT/CN2011/075710 2011-01-24 2011-06-14 一种mimo天线及其应用的移动终端 WO2012100488A1 (zh)

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