WO2016112628A1 - 一种多输入多输出天线系统 - Google Patents

一种多输入多输出天线系统 Download PDF

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Publication number
WO2016112628A1
WO2016112628A1 PCT/CN2015/081397 CN2015081397W WO2016112628A1 WO 2016112628 A1 WO2016112628 A1 WO 2016112628A1 CN 2015081397 W CN2015081397 W CN 2015081397W WO 2016112628 A1 WO2016112628 A1 WO 2016112628A1
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antenna
unit
decoupling
clearance area
antenna unit
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PCT/CN2015/081397
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English (en)
French (fr)
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王小明
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中兴通讯股份有限公司
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Publication of WO2016112628A1 publication Critical patent/WO2016112628A1/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system

Definitions

  • the utility model relates to the application field of mobile wireless terminal technology, in particular to a compact multi-input multi-output antenna system with high isolation.
  • MIMO Multiple-Input Multiple-Output
  • MIMO Multiple-Input Multiple-Output
  • multiple antennas are provided at the receiving end and the transmitting end of a wireless communication system to create multiple parallel spatial channels, multiple The information flow is transmitted simultaneously in the same frequency band through multiple channels, which can multiply the system capacity and improve the utilization efficiency of the spectrum, and is a major breakthrough in the antenna technology in the field of wireless mobile communication.
  • the application of MIMO antennas in small wireless terminal devices has certain difficulties: that is, the antenna must satisfy the MIMO communication isolation requirement and have a compact structure.
  • the following methods are generally used, such as: increasing the antenna spacing; introducing an EBG (Electromagnetic Band Gap) structure; floor grooving; adding parasitic conductors or parasitic gap structures. Increase the network to change the antenna feed and phase.
  • EBG Electromagnetic Band Gap
  • the present invention provides a compact multi-input multi-output antenna system with high isolation for transmitting and receiving electromagnetic signals in a small wireless terminal device, and has a simple structure. compact.
  • a multiple input multiple output antenna system comprising: a substrate; a plurality of clearance areas mounted on the substrate An antenna unit; a plurality of decoupling units mounted in the clearance area of the substrate, configured to perform decoupling processing by coupling between the antenna units; wherein the decoupling unit is a conductive member.
  • the plurality of decoupling units are placed in parallel with the plurality of antenna elements.
  • the method further includes: a first type of adjustable electrical component mounted on the antenna unit and configured to adjust an operating frequency of the antenna; and a setting installed on the decoupling unit to adjust an isolation between the antenna elements and a second operating frequency of the antenna Class adjustable electrical components.
  • the first type of adjustable electrical component and the second type of adjustable electrical component are variable capacitors and/or variable inductors and/or switches.
  • the substrate has a top floor and a bottom floor; the top of the top floor has a top clearance area, the plurality of antenna elements are installed in the top clearance area; and the bottom floor has a bottom clearance area
  • the plurality of decoupling units are disposed in the top clearance area and the bottom clearance area; wherein the decoupling unit located in the top clearance area is placed in parallel with the antenna unit.
  • the structure of the antenna unit is a loop antenna structure or an inverted F antenna structure or a slot antenna structure.
  • the plurality of antenna units includes a first antenna unit and a second antenna unit, and the first antenna unit and the second antenna unit are symmetrically mounted in the top clearance area.
  • the plurality of decoupling units include a first decoupling unit and a second decoupling unit, the first decoupling unit is installed in a top clearance area, and the second decoupling unit is installed in a bottom clearance area;
  • the first decoupling unit is placed in parallel with the first antenna unit and the second antenna unit.
  • the first decoupling unit is an unclosed folded metal strip, and the unclosed folded metal strips are placed at an upper end of the first antenna unit and the second antenna unit at a distance; the second decoupling unit is The three-section metal strip is assembled and installed in the bottom clearance area.
  • the unclosed folded metal strip is in the same plane as the first antenna unit and the second antenna unit, and the opening of the unclosed folded metal strip is aligned between the first antenna unit and the second antenna unit interval.
  • a decoupling unit is installed in the clearance area of the MIMO antenna, which can adjust the isolation of the antenna and radiate as the equivalent radiation part of the antenna, thereby satisfying the MIMO communication isolation requirement. , and reduce the size of the antenna;
  • the embodiment of the present invention installs an adjustable electrical component on the antenna unit and the decoupling unit, and is configured to The antenna operating frequency and isolation are simultaneously adjusted to cover the desired communication band, so that the antenna unit is not limited to WiFi communication operating in the 2.4 GHz band.
  • FIG. 1 is a schematic top view of the utility model in the first embodiment
  • Figure 2 is a schematic view showing the structure of the bottom surface of the first embodiment of the present invention.
  • Figure 3 is a perspective view of the utility model in the first embodiment
  • FIG. 4 is a graph showing an S-parameter frequency response curve of the present invention for 2.4 GHz band WiFi communication
  • Figure 5 is a perspective view of the present invention in the second embodiment.
  • the utility model provides a compact multi-input multi-output antenna system with high isolation for transmitting and receiving electromagnetic signals in a communication device, comprising: a substrate; a plurality of antenna units installed in a clearance area of the substrate; A plurality of decoupling units placed in the clearance area of the substrate and placed in parallel with the plurality of antenna elements.
  • the decoupling unit is a conductive component, and the decoupling unit of the embodiment of the present invention is preferably metal conductive. component.
  • the decoupling unit can radiate as part of the antenna unit to increase the antenna radiation, thereby achieving a miniaturized design of the antenna.
  • the embodiment of the present invention further includes: a first type of adjustable electrical component mounted on the antenna unit, configured to adjust an antenna operating frequency; and a second type of adjustable electrical component mounted on the decoupling unit, configured to adjust the antenna Isolation between units and antenna operating frequency.
  • the MIMO antenna system in this embodiment includes a substrate having a top floor 14 and a bottom floor 16, the end of the top floor 14 having a top clearance area 190 and the bottom floor 16 end
  • the portion has a bottom clearance area 192; a MIMO dual antenna unit 12 mounted in the top clearance area 190;
  • a first decoupling unit 182 (shown as a solid line in FIG. 3) mounted in the top clearance area 190 and a second decoupling unit 184 (shown as a dashed line in FIG. 3) mounted in the bottom clearance area 192.
  • the substrate is a substrate such as a printed circuit board.
  • the top floor 14 and the floor floor 16 are electrically conductive metal planes that are connected to each other by through holes or other means.
  • the MIMO dual antenna unit 12 includes a first antenna unit 122 and a second antenna unit 124.
  • the first antenna unit 122 and the second antenna unit 124 are symmetrically mounted on the top clearance area 190, the first antenna unit 122 and The second antenna unit 124 is fed by the first feed 126 and the second feed 128, respectively.
  • the feed may include a radio frequency transmitter configured to transmit radio frequency signals, a radio frequency receiver configured to receive radio frequency signals, a transmission line, and a matching network.
  • the first antenna unit 122 and the second antenna unit 124 are configured as a loop antenna structure or an inverted F antenna structure or a slot antenna structure. When installed, the first antenna unit 122 and the second antenna unit 124 may adopt the same antenna unit structure. The form is combined and installed, and it is also possible to use a combination of any two of the three antenna unit structures.
  • the first antenna unit 122 couples a portion of the current to the second antenna unit 124. Since the distance between the antenna elements is small, the coupling current is large, resulting in poor isolation between the first antenna unit 122 and the second antenna unit 124.
  • the coupling current on the second antenna unit 124 changes.
  • the first decoupling unit 182 and the second decoupling unit 184 select an appropriate size, shape, and relative position to the two antenna elements, most of the coupling current will concentrate on the first decoupling unit 182 and the second decoupling unit.
  • the coupling current on the second antenna unit 124 becomes weak, thereby increasing the isolation between the two antenna elements.
  • the first decoupling unit 182 and the second decoupling unit 184 are also radiated as part of the first antenna unit 122, which increases the effective length of the radiation of the first antenna unit 122, and realizes the miniaturization design of the antenna.
  • the above mode of operation is also applicable to the case when the second feed unit 128 feeds the second antenna unit 124.
  • the size, shape and relative position of the decoupling unit affect the operating frequency and isolation of the antenna unit.
  • the first decoupling unit 182 is an unclosed folded metal strip that is in the same plane as the first antenna unit 122 and the second antenna unit 124. And placed at an upper end of the first antenna unit 122 and the second antenna unit 124 at a certain distance; specifically, the opening of the unclosed folded metal strip is aligned with the first antenna unit 122 and the next day The spacing between line units 124.
  • the second decoupling unit 184 is composed of three metal strips and is mounted in the bottom clearance area 192.
  • the decoupling unit When the perimeter of the two decoupling units is compared to the one-half wavelength corresponding to the antenna operating frequency, the decoupling unit resonates at the operating frequency of the antenna.
  • the mutual coupling current between the two antenna units is weakened, and the isolation between the antennas is improved.
  • the current on the decoupling unit is also radiated, reducing the size of the antenna unit.
  • Figure 4 shows the S-parameter frequency response plot of a MIMO antenna system for 2.4 GHz band WiFi communication, where the slashed area is the antenna operating band area (2.4-2.48 GHz).
  • the MIMO antenna system has low reflection loss and high isolation in the operating frequency band region.
  • the MIMO antenna system in this embodiment includes a substrate having a top floor 14 and a bottom floor 16, the end of the top floor 14 having a top clearance area 190, and the end of the bottom floor 16 having a bottom clearance area 192; a MIMO dual antenna unit 12 mounted in the top clearance area 190; a first decoupling unit 182 (shown as a solid line in FIG. 5) mounted in the top clearance area 190 and mounted on the bottom clearance area 192 The second decoupling unit 184 (shown as a dashed line in Figure 5).
  • the MIMO dual antenna unit 12 includes a first antenna unit 122 and a second antenna unit 124.
  • the first antenna unit 122 and the second antenna unit 124, and the first decoupling unit 182 and the second decoupling unit 184 are configured and operated in the same manner as in the first embodiment.
  • the embodiment further includes a first type of adjustable electrical components 260, 264 mounted on the first antenna unit 122, and a first type of adjustable electrical components 262, 266 mounted on the second antenna unit 124, mounted in the A second type of adjustable electrical component 270 on a decoupling unit 182, a second type of adjustable electrical component 268 mounted on the second decoupling unit 184.
  • the operating frequency of the first antenna unit 122 can be varied by changing the state of the first type of adjustable electrical components 260, 264.
  • the first antenna unit 122 can be coupled to the second by adjusting the second type of adjustable electrical component 270 mounted on the first decoupling unit 182 and the second type of adjustable electrical component 268 mounted on the second decoupling unit 184.
  • the magnitude of the current on the antenna unit 124 increases the isolation between the two antenna elements; at the same time, the second type of adjustable electrical component 270 and the second type of adjustable electrical component 268 can adjust the antenna operating frequency to cover the desired communication. Band.
  • the above mode of operation is also applicable to the case when the second feed unit 128 feeds the second antenna unit 124.
  • each antenna unit may also include only one first type of adjustable electrical components for operating frequency adjustment; the two decoupling units may include only one second type of adjustable electrical components for isolation and antenna operation. Frequency adjustment.
  • the first type of adjustable electrical component and the second type of adjustable electrical component can be implemented using switches, or can be implemented using components that can be placed in a variety of different states, such as capacitors that can be continuously changed and/or can Continuously changing inductors.
  • the first type of adjustable electrical components and the second type of adjustable electrical components can be implemented using only switches or continuously changeable capacitors or continuously changeable inductors, or switches, continuously changeable capacitors, and continuous The changed inductance is implemented in any of three forms.
  • the antenna unit in the embodiment of the present invention is not limited to WiFi communication operating in the 2.4 GHz band, and changing the size of the antenna or the adjustable electrical component can change the operating frequency.
  • a multiple input multiple output antenna system provided by an embodiment of the present invention has the following beneficial effects: 1)
  • the embodiment of the present invention installs a decoupling unit in the clearance area of the MIMO antenna, which can not only isolate the antenna. The adjustment can be performed as the equivalent radiation portion of the antenna, so as to meet the MIMO communication isolation requirement and reduce the antenna size; 2) the embodiment of the present invention is adjustable on the antenna unit and the decoupling unit.
  • the electrical component is arranged to simultaneously adjust the antenna operating frequency and isolation to cover the desired communication band, so that the antenna unit is not limited to WiFi communication operating in the 2.4 GHz band.

Abstract

本实用新型公开了一种多输入多输出天线系统，包括：基板；安装在所述基板的净空区的多个天线单元；安装在所述基板的净空区并与所述多个天线单元平行放置的多个去耦单元，设置为通过对天线单元间的耦合进行去耦处理来提高天线单元之间的隔离度，并增加天线辐射；其中，所述去耦单元为导电部件；安装在天线单元上的设置为调节天线工作频率的第一类可调节电部件；安装在去耦单元上的设置为调节天线单元之间的隔离度及天线工作频率的第二类可调节电部件。本实用新型用于在小型无线终端设备中发射和接收电磁信号，结构简单紧凑。

Description

一种多输入多输出天线系统 技术领域
本实用新型涉及移动无线终端技术应用领域，尤其涉及一种具有高隔离度的紧凑型的多输入多输出天线系统。
技术背景
近几年，无线通信正朝着大容量、高传输率和高可靠性方向发展，这使得针对有限的频谱资源，如何最大限度的提高频谱利用率，成为当前研究的一个热门课题。MIMO(Multiple-Input Multiple-Output，多输入多输出)技术是一种多天线技术，即在无线通信系统的接收端和发射端都配备有多个天线，创造出多个并行空间信道，多个信息流经过多个信道在同一频带同时传输，可以成倍地增加系统容量，提高频谱的利用效率，是无线移动通信领域天线技术的重大突破。
但是，由于消费者对小型无线终端设备的追求，MIMO天线在小型无线终端设备中的应用具有一定难度：即既要让天线满足MIMO通信隔离度要求，又要具有紧凑型结构。目前，为提高MIMO天线之间的耦合隔离度，通常会使用以下方法，如：增大天线间距；引入EBG(Electromagnetic Band Gap，电磁带隙)结构；地板刻槽；增加寄生导体或寄生缝隙结构；增加网络以改变天线馈电和相位等。而增大天线间距在实际应用中往往受到天线安装体积的限制；增加寄生导体或寄生缝隙结构会增加天线的净空；引入EBG结构、地板刻槽和增加网络都需要较大的地板，均不利于天线的小型化。
实用新型内容
本实用新型实施例为了至少克服上述现有技术存在的问题，提供一种具有高隔离度的紧凑型的多输入多输出天线系统，用于在小型无线终端设备中发射和接收电磁信号，结构简单紧凑。
为了至少实现本实用新型实施例的上述目的，提供以下技术方案：
一种多输入多输出天线系统，包括：基板；安装在所述基板的净空区的多个 天线单元；安装在所述基板的净空区的多个去耦单元，设置为通过对天线单元间的耦合进行去耦处理；其中，所述去耦单元为导电部件。
所述多个去耦单元与所述多个天线单元平行放置。
此外，还包括：安装在天线单元上的设置为调节天线工作频率的第一类可调节电部件；安装在去耦单元上的设置为调节天线单元之间的隔离度及天线工作频率的第二类可调节电部件。
所述第一类可调节电部件和第二类可调节电部件为可变电容和/或可变电感和/或开关。
所述基板具有顶面地板和底面地板；所述顶面地板的端部具有顶面净空区，所述多个天线单元安装在顶面净空区内；所述底面地板的端部具有底面净空区，所述多个去耦单元安置在顶面净空区和底面净空区内；其中，位于所述顶面净空区的去耦单元与所述天线单元平行放置。
所述天线单元的结构为环形天线结构或倒F天线结构或缝隙天线结构。
所述多个天线单元包括第一天线单元和第二天线单元，所述第一天线单元和第二天线单元对称安装在所述顶面净空区内。
所述多个去耦单元包括第一去耦单元和第二去耦单元，所述第一去耦单元安装在顶面净空区内，所述第二去耦单元安装在底面净空区内；其中，所述第一去耦单元与所述第一天线单元和第二天线单元平行放置。
所述第一去耦单元为未闭合的折合金属条带，所述未闭合的折合金属条带间隔一定距离放置在第一天线单元和第二天线单元的上端；所述第二去耦单元由三段金属条带组成，安装在底面净空区内。
所述未闭合的折合金属条带与第一天线单元和第二天线单元位于同一平面内，并且所述未闭合的折合金属条带的开口对准第一天线单元和第二天线单元之间的间隔。
本实用新型实施例的有益效果体现在以下方面：
1)本实用新型实施例在MIMO天线的净空区安装去耦单元，既可对天线的隔离度进行调节，又可以作为天线的等效辐射部分进行辐射，从而做到既满足MIMO通信隔离度要求，又减小天线尺寸；
2)本实用新型实施例在天线单元和去耦单元上安装可调节电部件，设置为 对天线工作频率和隔离度同时进行调节，以便覆盖期望的通信波段，使天线单元不限于工作在2.4GHz波段WiFi通信。
附图说明
图1是本实用新型在实施例一中的顶面结构示意图；
图2是本实用新型在实施例一中的底面结构示意图；
图3是本实用新型在实施例一中的透视图；
图4是本实用新型用于2.4GHz波段WiFi通信的S参数频率响应曲线图；
图5是本实用新型在实施例二中的透视图。
附图标记说明：14-顶面底板；16-底面地板；190-顶面净空区；192-底面净空区；12-MIMO双天线单元；122-第一天线单元；124-第二天线单元；182-第一去耦单元；184-第一去耦单元；126-第一馈源；128-第二馈源；260、262、264、266-第一类可调节电部件；268、270-第二类可调节电部件。
具体实施方式
本实用新型提供一种用于在通信设备中发射和接收电磁信号的具有高隔离度的紧凑型的多输入多输出天线系统，包括：基板；安装在基板的净空区的多个天线单元；安装在基板的净空区并与多个天线单元平行放置的多个去耦单元。其中，通过调整去耦单元，可对天线单元间的耦合进行去耦处理来提高天线单元之间的隔离度；同时，去耦单元为导电部件，本实用新型实施例的去耦单元优选金属导电部件。去耦单元可以作为天线单元的一部分进行辐射来增加天线辐射，从而实现天线的小型化设计。
此外，本实用新型实施例还包括：安装在天线单元上的第一类可调节电部件，设置为调节天线工作频率；安装在去耦单元上的第二类可调节电部件，设置为调节天线单元之间的隔离度及天线工作频率。
下面通过两个具体的实施例对本实用新型的技术方案做进一步的详细说明。
实施例一
如图1至3所示，该实施例中的MIMO天线系统包括：基板，基板具有顶面地板14和底面地板16，顶面地板14的端部具有顶面净空区190，底面地板16的端部具有底面净空区192；安装在顶面净空区190的MIMO双天线单元12； 安装在顶面净空区190的第一去耦单元182(图3中显示为实线)和安装在底面净空区192的第二去耦单元184(图3中显示为虚线)。
其中，基板为诸如印刷电路板之类的基板。顶面地板14和底面地板16为导电金属平面，通过通孔或其它方式连接共地。
如图3所示，MIMO双天线单元12包括第一天线单元122和第二天线单元124，第一天线单元122和第二天线单元124对称安装在顶面净空区190，第一天线单元122和第二天线单元124分别由第一馈源126和第二馈源128对其进行馈电。优选的，馈源可以包括设置为传送射频信号的射频发射机、设置为接收射频信号的射频接收机、传输线和匹配网络。
其中，第一天线单元122和第二天线单元124的结构为环形天线结构或倒F天线结构或缝隙天线结构，安装时，第一天线单元122和第二天线单元124可以采用相同的天线单元结构形式进行组合安装，也可以采用三种天线单元结构形式中的任意两种进行组合安装。
当第一馈源126对第一天线单元122馈电，第一天线单元122会耦合一部分电流至第二天线单元124。由于天线单元之间距离很小，该耦合电流会很大，导致第一天线单元122和第二天线单元124之间隔离度很差。当引入第一去耦单元182和第二去耦单元184时，第二天线单元124上的耦合电流会发生改变。当第一去耦单元182和第二去耦单元184选择合适的尺寸、形状以及与两个天线单元的相对位置时，大部分耦合电流会集中在第一去耦单元182和第二去耦单元184上，使得第二天线单元124上的耦合电流会变得很弱，从而提高了两天线单元之间的隔离度。同时，第一去耦单元182和第二去耦单元184也作为第一天线单元122的一部分进行辐射，增加了第一天线单元122辐射的有效长度，实现了天线的小型化设计。
上述工作方式也适用于第二馈源128对第二天线单元124馈电时的情况。
去耦单元的尺寸、形状及与天线单元的相对位置会影响天线单元的工作频点和隔离度的大小。作为示例，如图1和3所示，第一去耦单元182为未闭合的折合金属条带，该未闭合的折合金属条带与第一天线单元122和第二天线单元124位于同一平面内并间隔一定距离放置在第一天线单元122和第二天线单元124的上端；具体的，未闭合的折合金属条带的开口对准第一天线单元122和第二天 线单元124之间的间隔。如图2和3所示，第二去耦单元184由三段金属条带组成，安装在底面净空区192内。当两个去耦单元的周长与天线工作频率对应的二分之一波长相比拟时，去耦单元谐振在天线的工作频率上。通过调整两个去耦单元与天线单元的相对位置，减弱两个天线单元之间的互耦电流，提高天线间隔离度。同时，去耦单元上的电流也进行辐射，减小了天线单元的尺寸。
图4给出了用于2.4GHz波段WiFi通信的MIMO天线系统的S参数频率响应曲线图，其中斜线区域为天线工作频段区域(2.4-2.48GHz)。从图4中可以看出，MIMO天线系统在工作频段区域内反射损耗较小，具有很高的隔离度。
实施例二
如图5所示，该实施例中的MIMO天线系统包括：基板，基板具有顶面地板14和底面地板16，顶面地板14的端部具有顶面净空区190，底面地板16的端部具有底面净空区192；安装在顶面净空区190的MIMO双天线单元12；安装在顶面净空区190的第一去耦单元182(图5中显示为实线)和安装在底面净空区192的第二去耦单元184(图5中显示为虚线)。其中，MIMO双天线单元12包括第一天线单元122和第二天线单元124。
该实施例中，第一天线单元122和第二天线单元124，以及第一去耦单元182和第二去耦单元184的结构以及工作方式同实施例一。此外，该实施例还包括安装在第一天线单元122上的第一类可调节电部件260、264，安装在第二天线单元124上的第一类可调节电部件262、266，安装在第一去耦单元182上的第二类可调节电部件270，安装在第二去耦单元184上的第二类可调节电部件268。
当第一馈源126对第一天线单元122馈电，可通过改变第一类可调节电部件260、264的状态来改变第一天线单元122的工作频率。通过调节安装在第一去耦单元182上的第二类可调节电部件270和安装在第二去耦单元184的第二类可调节电部件268，可改变第一天线单元122耦合至第二天线单元124上的电流幅度，提高了两天线单元间的隔离度；同时，第二类可调节电部件270和第二类可调节电部件268可对天线工作频率进行调节，以便覆盖期望的通信波段。
上述工作方式也适用于第二馈源128对第二天线单元124馈电时的情况。
此外，每个天线单元上也可以只包含一个第一类可调节电部件进行工作频率调节；两个去耦单元可以只包含一个第二类可调节电部件进行隔离度及天线工作 频率调节。
优选的，第一类可调节电部件和第二类可调节电部件可使用开关来实现，也可使用能够置于多种不同状态下的部件来实现，例如可以连续改变的电容和/或可以连续改变的电感器。使用时，第一类可调节电部件和第二类可调节电部件可以只采用开关或可以连续改变的电容或可以连续改变的电感来实现，也可以采用开关、可以连续改变的电容以及可以连续改变的电感三种形式中的任意两种来实现。
本实用新型实施例中的天线单元不限于工作于2.4GHz波段WiFi通信，改变天线的尺寸或者可调节电部件可以改变工作频率。
尽管上述对本实用新型做了详细说明，但本实用新型不限于此，本技术领域的技术人员可以根据本实用新型的原理进行修改，因此，凡按照本实用新型的原理进行的各种修改都应当理解为落入本实用新型的保护范围。
工业实用性
如上所述，本实用新型实施例提供的一种多输入多输出天线系统，具有以下有益效果：1)本实用新型实施例在MIMO天线的净空区安装去耦单元，既可对天线的隔离度进行调节，又可以作为天线的等效辐射部分进行辐射，从而做到既满足MIMO通信隔离度要求，又减小天线尺寸；2)本实用新型实施例在天线单元和去耦单元上安装可调节电部件，设置为对天线工作频率和隔离度同时进行调节，以便覆盖期望的通信波段，使天线单元不限于工作在2.4GHz波段WiFi通信。

Claims (10)

  1. 一种多输入多输出天线系统，包括：
    基板；
    安装在所述基板的净空区的多个天线单元；
    安装在所述基板的净空区的多个去耦单元，设置为通过对天线单元间的耦合进行去耦处理；
    其中，所述去耦单元为导电部件。
  2. 如权利要求1所述的多输入多输出天线系统，其中，所述多个去耦单元与所述多个天线单元平行放置。
  3. 如权利要求2所述的多输入多输出天线系统，其中，还包括：
    安装在天线单元上的设置为调节天线工作频率的第一类可调节电部件；
    安装在去耦单元上的设置为调节天线单元之间的隔离度及天线工作频率的第二类可调节电部件。
  4. 如权利要求3所述的多输入多输出天线系统，其中，所述第一类可调节电部件和第二类可调节电部件为可变电容和/或可变电感和/或开关。
  5. 如权利要求4所述的多输入多输出天线系统，其中，所述基板具有顶面地板和底面地板；所述顶面地板的端部具有顶面净空区，所述多个天线单元安装在顶面净空区内；所述底面地板的端部具有底面净空区，所述多个去耦单元安置在顶面净空区和底面净空区内；
    其中，位于所述顶面净空区的去耦单元与所述天线单元平行放置。
  6. 如权利要求5所述的多输入多输出天线系统，其中，所述天线单元的结构为环形天线结构或倒F天线结构或缝隙天线结构。
  7. 如权利要求6所述的多输入多输出天线系统，其中，所述多个天线单元包括第一天线单元和第二天线单元，所述第一天线单元和第二天线单元对称安装在所述顶面净空区内。
  8. 如权利要求7所述的多输入多输出天线系统，其中，所述多个去耦单元包括第一去耦单元和第二去耦单元，所述第一去耦单元安装在顶面净空区内，所述第二去耦单元安装在底面净空区内；
    其中，所述第一去耦单元与所述第一天线单元和第二天线单元平行放置。
  9. 如权利要求8所述的多输入多输出天线系统，其中，所述第一去耦单元为未闭合的折合金属条带，所述未闭合的折合金属条带间隔预定距离放置在第一天线单元和第二天线单元的上端；所述第二去耦单元由三段金属条带组成，安装在底面净空区内。
  10. 如权利要求9所述的多输入多输出天线系统，其中，所述未闭合的折合金属条带与第一天线单元和第二天线单元位于同一平面内，并且所述未闭合的折合金属条带的开口对准第一天线单元和第二天线单元之间的间隔。
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