WO2019114340A1 - 一种垂直极化mimo天线和具有mimo天线的终端 - Google Patents

一种垂直极化mimo天线和具有mimo天线的终端 Download PDF

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Publication number
WO2019114340A1
WO2019114340A1 PCT/CN2018/104756 CN2018104756W WO2019114340A1 WO 2019114340 A1 WO2019114340 A1 WO 2019114340A1 CN 2018104756 W CN2018104756 W CN 2018104756W WO 2019114340 A1 WO2019114340 A1 WO 2019114340A1
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Prior art keywords
antenna
diversity
mimo
terminal
main set
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PCT/CN2018/104756
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English (en)
French (fr)
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张菊香
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西安中兴新软件有限责任公司
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Priority to EP18887480.4A priority Critical patent/EP3726652B1/en
Priority to US16/954,104 priority patent/US11050141B2/en
Publication of WO2019114340A1 publication Critical patent/WO2019114340A1/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
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; 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
    • H01Q1/243—Supports; 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
    • 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
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • 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
    • H01Q5/378—Combination of fed elements with parasitic elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems

Definitions

  • the present disclosure relates to the field of communication transmission technologies, and in particular, to a vertically polarized MIMO antenna and a terminal having a MIMO antenna.
  • the antenna form is a conventional PIFA (Planar Inverted F-shaped Antenna), IFA (Inverted F-shaped Antenna, inverted F type). Antenna), Monopole (monopole antenna).
  • PIFA Planar Inverted F-shaped Antenna
  • IFA Inverted F-shaped Antenna, inverted F type
  • Antenna Monopole (monopole antenna).
  • the antenna performance index and MIMO (Multiple Input Multiple Output) performance cannot be balanced; Without increasing the spectrum resources and antenna transmit power, by increasing the MIMO performance to increase the system channel capacity, conventional methods cannot solve this problem in the full frequency range, especially in the low frequency part, even a single low frequency such as LTE B13 (at 5 inches) On the mobile phone, the main antenna and the diversity antenna are just at ⁇ /4, so the conventional antenna form cannot effectively improve the performance of the MIMO antenna.
  • MIMO Multiple Input Multiple Output
  • the present disclosure provides a vertically polarized MIMO antenna and a terminal having a MIMO antenna to improve antenna efficiency and improve antenna MIMO performance.
  • the present disclosure provides a vertically polarized MIMO antenna, comprising: a main set antenna and a diversity antenna, the diversity end of the diversity antenna being vertically distributed with a radiation end of the main set antenna.
  • the antenna segments of the main set antenna and the diversity antenna except the radiating end form a geometry of at least one of the following:
  • the diversity antenna and the main set antenna are disposed on the same side or different sides of the terminal circuit board.
  • the diversity antenna and the main set antenna are respectively disposed at two ends or diagonal lines of the terminal circuit board.
  • the antenna further comprises: a coupling parasitic unit disposed inside or outside the geometry of the diversity antenna.
  • the coupling parasitic unit is disposed within a preset range of the diversity antenna.
  • the present disclosure also provides a terminal having a MIMO antenna, including: the antenna described above.
  • the MIMO antenna combination form of the present disclosure does not limit the position of the antenna feeding, and does not need to limit the size of the terminal (such as a mobile phone) from the antenna spacing alone (in general, the low-frequency MIMO performance of the 5-inch mobile phone is difficult to meet the demand, so It is necessary to appropriately increase the size of the whole machine. It does not require the antenna feed point to be symmetrically designed or diagonally diagonally designed, which satisfies the characteristics of flexible and diverse terminal layout, can maximize the antenna efficiency, reduce the ECC, improve the isolation, and at the same time, is beneficial to Improve antenna MIMO performance.
  • FIG. 1-68 is a schematic diagram of a vertically polarized MIMO antenna according to an embodiment of the present disclosure
  • Figure 69 is a schematic diagram showing the test of the performance of the MIMO antenna OTA in Embodiment 1 of the present disclosure.
  • An embodiment of the present disclosure provides a vertically polarized MIMO antenna, including: a main set antenna and a diversity antenna, wherein the diversity antenna radiating end is vertically distributed with the radiating end of the main set antenna.
  • the antenna segments of the main set antenna and the diversity antenna except the radiating end form a geometry of at least one of the following:
  • the radiating end of the diversity antenna is vertically distributed with the radiation end of the main set antenna to optimize and adjust the polarization direction of the diversity antenna radiation and the radiation of the main set antenna so that the polarization direction is close to vertical.
  • the antenna provided in the embodiments of the present disclosure is mainly applicable to a 2*2 MIMO system. Regardless of the type of routing of the main set antenna, the radiating end of the corresponding diversity antenna is vertically distributed with the corresponding radiating end surface of the main set antenna; except for the other antenna branches of the radiating end portion, which are rectangular, triangular, circular, polygonal, etc. connection.
  • the two antennas in any one of the antenna combinations may be in a main set and a diversity form, respectively.
  • the main antenna in the lower part of the drawing is a diversity antenna in the upper part of the drawing, and the diversity antenna and the main antenna are disposed on the same side or different sides of the terminal circuit board. side.
  • the diversity antenna and the main set antenna are respectively disposed at two ends or diagonal lines of the terminal circuit board. There is no special requirement for the layout of the diversity antenna and the main set antenna in the terminal circuit board. For example, the distance between the diversity antenna and the main set antenna may be in the range of ⁇ /4 to ⁇ /10.
  • the antennas as shown in FIGS. 1-8, 13-20, 23-26, 29-34, 37-38, 43-44, and 49-68 also include: coupling A parasitic unit, the coupled parasitic unit being disposed inside or outside the geometry of the diversity antenna.
  • the coupled parasitic unit in this embodiment is a short antenna stub disposed around the diversity antenna, and the coupling parasitic unit functions to increase the bandwidth by near-field coupling of electromagnetic waves.
  • the coupling parasitic unit is disposed within a preset range of the diversity antenna.
  • Embodiments of the present disclosure also provide a terminal having a MIMO antenna, including the antenna described above.
  • the MIMO antenna in the MIMO antenna with a vertically distributed end in this embodiment, in the 2*2 MIMO antenna system, it is necessary to ensure that the radiating end of the diversity antenna of the main set antenna and the radiating end of the diversity antenna corresponding to the antenna maintain vertical polarization.
  • the other nodes of the antenna are not limited to any form.
  • the MIMO antenna can reduce the isolation between the ECC index and the antenna to some extent, and can improve the performance of the MIMO antenna. The performance is tested as follows:
  • FIG. 69 is a block diagram of a MIMO antenna OTA (OVER THE AIR) performance test principle and an authentication test system performed by a CTIA (American Wireless Communications and Internet Association) certification accredited darkroom according to the present embodiment:
  • MIMO technology in the existing 4G mobile phone terminal mainly introduces at least two antennas to receive downlink signals.
  • the so-called MIMO OTA is to accurately simulate the wireless transmission environment in the darkroom, and then to measure the components in the simulated wireless transmission environment. carry out testing.
  • the current CTIA-approved certification test method is shown in Figure 69 for the Multi-Probe Test Method (MPAC).
  • the main principle is: 8 or 16 antenna probes are installed in the anechoic chamber, where each antenna is in the form of dual polarization, and each probe antenna transmits a signal that has undergone a wireless fading channel to the device under test from different directions. By controlling the signal power transmitted by each probe, a directional controllable wireless fading channel can be directly fabricated in the darkroom.
  • the multi-probe method simulates the wireless channel multipath, PDP (Power Delay Profile) and Doppler characteristics in a channel emulator.
  • the spatial directional analog is achieved by probe antennas and power ratios installed in different directions.
  • the test results show that the MIMO antenna provided in this embodiment has the same MIMO performance, and the MIMO performance in this embodiment is much better than other routing forms of the same size machine.
  • the extreme position in the pattern of the primary and secondary antennas can be controlled by controlling the relative positions of the main radiating end faces of the primary and secondary antennas, thereby achieving maximum polarization of the antenna; and, while ensuring antenna efficiency, It can effectively control the isolation between the antennas and ECC.
  • the present disclosure is applicable to the field of communication transmission technology, and can meet the characteristics of flexible and diverse terminal layouts at present, can maximize antenna efficiency, reduce ECC, improve isolation, and at the same time, improve antenna MIMO performance.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radio Transmission System (AREA)

Abstract

本申请提出一种垂直极化MIMO天线和具有MIMO天线的终端，所述天线包括：主集天线和分集天线，所述分集天线辐射末端与所述主集天线的辐射末端呈垂直分布。所述终端包括上述天线，本公开的MIMO天线组合形式不拘泥于天线馈电的位置，不需要单从天线间距出发限制终端尺寸，不需要天线馈点作对称设计或者斜对角设计，满足了现在终端布局灵活多样的特点，能最大限度的提升天线效率，降低ECC，改善隔离度，同时，利于提升天线MIMO性能。 (图1)

Description

一种垂直极化MIMO天线和具有MIMO天线的终端 技术领域
本公开涉及通信传输技术领域，具体涉及一种垂直极化MIMO天线和具有MIMO天线的终端。
背景技术
目前，最常用的主分集天线通常呈上下或者左右分布在终端上，天线形式是常规的PIFA(Planar Inverted F-shaped Antenna，平面倒F型天线)、IFA(Inverted F-shaped Antenna，倒F型天线)、Monopole(单极子天线)这几种。
但不论是主分集天线上下放置还是左右放置，也不论主分集天线采取何种形式，在有限的空间布局内，无法兼顾天线性能指标和MIMO(Multiple Input Multiple Output，多输入多输出)性能；在不增加频谱资源和天线发射功率的情况下，通过提升MIMO性能来提升系统信道容量，常规的做法无法全频段的解决此问题，尤其是低频部分，即便是单一的低频如LTE B13(在5寸手机上，其主天线与分集天线，正好处于λ/4，故常规天线形式无法有效改善MIMO天线性能)，在吞吐量理论值的70％、90％、95％三种状态下，相应的信噪比不能保证在全角度满足CTIA(美国无线通信和互联网协会)要求，更不能满足诸如VZW(Verizon wireless，Verizon无线公司)之类的要求更为苛刻的运行商的需求。
发明内容
本公开提供一种垂直极化MIMO天线和具有MIMO天线的终端，提升天线效率、提升天线MIMO性能。
为了实现上述发明目的，本公开采取的技术方案如下：
第一方面，本公开提供一种垂直极化MIMO天线，包括：主集天线和分集天线，所述分集天线辐射末端与所述主集天线的辐射末端呈垂直分布。
可选地，所述主集天线和分集天线除辐射末端的天线枝节形成如下至少之一的几何形状：
矩形、三角形、圆形、多边形、不规则形状。
可选地，所述分集天线与所述主集天线设置在终端线路板的同一侧或者不同侧。
可选地，所述分集天线与所述主集天线分别设置在终端线路板的两端或者对角线。
可选地，所述的天线还包括：耦合寄生单元，所述耦合寄生单元设置在所述分集天线组成的几何形状的内部或者外部。
可选地，所述耦合寄生单元设置在所述分集天线的预设范围内。
第二方面，本公开还提供一种具有MIMO天线的终端，包括：上述的天线。
本公开和现有技术相比，具有如下有益效果：
本公开的MIMO天线组合形式不拘泥于天线馈电的位置，不需要单从天线间距出发限制终端(如手机)尺寸(一般来讲，5寸的手机其低频MIMO性能均很难满足需求，故需要适当增加整机尺寸)，不需要天线馈点作对称设计或者斜对角设计，满足了现在终端布局灵活多样的特点，能最大限度的提升天线效率，降低ECC，改善隔离度，同时，利于提升天线MIMO性能。
附图说明
图1-68为本公开实施例的垂直极化MIMO天线的示意图；
图69为本公开实施例1中MIMO天线OTA性能的测试原理图。
具体实施方式
为使本公开的发明目的、技术方案和有益效果更加清楚明了，下面结合附图对本公开的实施例进行说明，需要说明的是，在不冲突的情况下，本申请中的实施例和实施例中的特征可以相互任意组合。
本公开实施例提供一种垂直极化MIMO天线，包括：主集天线和分集天线，所述分集天线辐射末端与所述主集天线的辐射末端呈垂直分布。
其中，所述主集天线和分集天线除辐射末端的天线枝节形成如下至少之一的几何形状：
矩形、三角形、圆形、多边形、不规则形状。
本公开实施例分集天线辐射末端与所述主集天线的辐射末端呈垂直分布可以优化和调整分集天线辐射与主集天线的辐射的极化方向，使极化方向接近垂直。
本公开实施例中提供的天线主要适用于2*2MIMO系统。不论主集天线呈何种走线形式，对应分集天线的辐射末端与主集天线相应的辐射末端面呈垂直分布状态；除了辐射末端部分的其他天线枝节通过矩形、三角形、圆形、多边形等方式连接。任何一种天线组合中的两个天线分别可以互为主集、分集形式。
如图1-图68所示，其中，处于附图下部的为主集天线，处于附图上部的为分集天线，所述分集天线与所述主集天线设置在终端线路板的同一侧或者不同侧。
所述分集天线与所述主集天线分别设置在终端线路板的两端或者对角线。所述分集天线与所述主集天线在终端线路板的布局，距离没有特殊要求。例如，所述分集天线与所述主集天线的距离可以为λ/4至λ/10范围内。
如图1-图8、图13-图20、图23-图26、图29-图34、图37-图38、图43-图44、图49-图68所述的天线还包括：耦合寄生单元，所述耦合寄生单元设置在所述分集天线组成的几何形状的内部或者外部。
本实施例中的耦合寄生单元为设置在分集天线周围的短天线枝节，所述耦合寄生单元的作用是通过电磁波的近场耦合增加带宽。
所述耦合寄生单元设置在所述分集天线的预设范围内。
本公开实施例还提供一种具有MIMO天线的终端，包括上述的天线。
实施例1
如图1-68所示，本实施例的末端垂直分布的MIMO天线，在2*2MIMO天线系统中，要确保主集天线辐射端与该天线相对应的分集天线的辐射端，保持垂直极化，而该天线的其他枝节不限于任何形式，该MIMO天线可以一定程度上降低ECC指标和天线间的隔离度，同时可以改善MIMO天线性能，该性能通过如下方式测试：
如图69为本实施例中MIMO天线OTA(OVER THE AIR，空中激活)性能的测试原理、及CTIA(美国无线通信和互联网协会)认证认可的认证暗室进行的认证测试系统框图：
MIMO技术在现有的4G手机终端，主要是引入至少两个天线来接收下行信号，所谓的MIMO OTA就是在暗室中准确的对无线传输环境进行模拟，然后在模拟的无线传输环境下对待测件进行测试。目前CTIA认可的认证测试方法如图69所示的多探头测试方法(MPAC)。其主要原理是：在吸波暗室安装了8或16个天线探头，这里的每个天线都是双极化形式，每个探头天线从不同方向发射经历了无线衰落信道的信号给待测件，通过控制各个探头发送的信号功率，可以在暗室直接制造出方向性可控的无线衰落信道。多探头方法对无线信道多径、PDP(Power Delay Profile)以及多普勒特性的模拟是在信道仿真器中实现的。空间方向性的模拟式通过安装在不同方向上的探头天线及功率配比实现。
测试结果表明，本实施例提供的MIMO天线在相同隔离度的情况下，本实施例中的天线形式，其MIMO性能远胜于同尺寸机器的其他走线形式。可以通过控制主副两个天线主辐射端面的相对位置，来控制主副天线的方向图中的极值位置，由此实现天线最大程度的双极化；同时，在保证天线效率的前提下，可以有效控制天线间的隔离度、ECC。
虽然本公开所揭示的实施方式如上，但其内容只是为了便于理解本公开的技术方案而采用的实施方式，并非用于限定本公开。任何本公开所属技术领域内的技术人员，在不脱离本公开所揭示的核心技术方案的前提下，可以在实施的形式和细节上做任何修改与变化，但本公开所限定的保护范围，仍须以所附的权利要求书限定的范围为准。
工业实用性
本公开适用于通信传输技术领域，用以满足现在终端布局灵活多样的特点，能最大限度的提升天线效率，降低ECC，改善隔离度，同时，利于提升天线MIMO性能。

Claims (7)

  1. 一种垂直极化MIMO天线，包括：主集天线和分集天线，所述分集天线辐射末端与所述主集天线的辐射末端呈垂直分布。
  2. 如权利要求1所述的天线，其中：所述主集天线和分集天线除辐射末端的天线枝节形成如下至少之一的几何形状：
    矩形、三角形、圆形、多边形、不规则形状。
  3. 如权利要求1或2所述的天线，其中：所述分集天线与所述主集天线设置在终端线路板的同一侧或者不同侧。
  4. 如权利要求3所述的天线，其中：所述分集天线与所述主集天线分别设置在终端线路板的两端或者对角线。
  5. 如权利要求2所述的天线，还包括：耦合寄生单元，所述耦合寄生单元设置在所述分集天线组成的几何形状的内部或者外部。
  6. 如权利要求5所述的天线，其中：所述耦合寄生单元设置在所述分集天线的预设范围内。
  7. 一种具有MIMO天线的终端，包括：权利要求1-6任一所述的天线。
PCT/CN2018/104756 2017-12-15 2018-09-10 一种垂直极化mimo天线和具有mimo天线的终端 WO2019114340A1 (zh)

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Application Number Priority Date Filing Date Title
EP18887480.4A EP3726652B1 (en) 2017-12-15 2018-09-10 Vertically polarized mimo antenna and terminal having same
US16/954,104 US11050141B2 (en) 2017-12-15 2018-09-10 Vertically polarized MIMO antenna and terminal having same

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CN201711351032.6A CN109935962A (zh) 2017-12-15 2017-12-15 一种垂直极化mimo天线和具有mimo天线的终端
CN201711351032.6 2017-12-15

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EP3726652B1 (en) 2023-12-27
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