WO2019137522A1 - 天线单元、mimo天线及手持设备 - Google Patents

天线单元、mimo天线及手持设备 Download PDF

Info

Publication number
WO2019137522A1
WO2019137522A1 PCT/CN2019/071574 CN2019071574W WO2019137522A1 WO 2019137522 A1 WO2019137522 A1 WO 2019137522A1 CN 2019071574 W CN2019071574 W CN 2019071574W WO 2019137522 A1 WO2019137522 A1 WO 2019137522A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna unit
antenna
radiator
opening
vertical portion
Prior art date
Application number
PCT/CN2019/071574
Other languages
English (en)
French (fr)
Inventor
任周游
赵安平
Original Assignee
深圳市信维通信股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市信维通信股份有限公司 filed Critical 深圳市信维通信股份有限公司
Priority to US16/474,818 priority Critical patent/US10950953B2/en
Publication of WO2019137522A1 publication Critical patent/WO2019137522A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • 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
    • 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
    • H01Q1/12—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
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • 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
    • 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
    • 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
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays 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

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to an antenna unit, a MIMO antenna, and a handheld device.
  • a MIMO antenna structure with more antenna elements such as a 6x6 or 8x8 MIMO antenna, will be applied to the handheld device to achieve greater channel capacity and better communication quality.
  • the MIMO antenna structure with multiple antenna elements can solve multipath fading problems and improve data throughput.
  • an antenna unit comprising a feeding body and a radiator, the radiator being in a U-shape rotated by 90°, the radiator comprising a first horizontal portion, first a vertical portion and a second horizontal portion, the two ends of the first vertical portion are respectively connected to the first horizontal portion and the second horizontal portion;
  • the feeding body is located in the U-shape, and the feeding body includes the second vertical portion a third horizontal portion and a third vertical portion, the two ends of the third horizontal portion are respectively connected to the second vertical portion and the third vertical portion, and the second vertical portion and the third vertical portion are located at the third level a different side of the portion; a first slit between the third horizontal portion and the first horizontal portion, the second vertical portion being disposed adjacent to the first vertical portion and having a second portion between the second vertical portion and the first vertical portion Gap.
  • a MIMO antenna including a grounding plate, having the antenna unit, the antenna unit is disposed perpendicular to an upper surface of the grounding plate, and the first horizontal portion of the antenna unit is connected to the grounding plate, and the plurality of The antenna unit is divided into two antenna unit groups, and the two antenna unit groups are respectively disposed on two long sides of the ground plate.
  • the present invention also adopts the following technical solution: a handheld device having the above MIMO antenna.
  • the invention has the beneficial effects that the antenna unit forms two adjacent double resonances through the structure of the feeding body and the radiator itself and the first and second slits, so that the antenna unit has ultra-wideband; the structure is simple, the processing is convenient, and the manufacturing low cost.
  • FIG. 1 is a front elevational view of an antenna unit according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic structural diagram of a MIMO antenna according to Embodiment 1 of the present invention.
  • FIG. 3 is a side view of a MIMO antenna according to Embodiment 1 of the present invention.
  • FIG. 5 is a graph showing the total efficiency of a MIMO antenna as a function of frequency according to Embodiment 1 of the present invention.
  • FIG. 6 is a current distribution diagram of a first antenna unit operating at a frequency equal to 3.5 GHz in a MIMO antenna according to Embodiment 1 of the present invention
  • FIG. 7 is a current distribution diagram of a first antenna unit operating at a frequency equal to 4.9 GHz in a MIMO antenna according to Embodiment 1 of the present invention.
  • FIG. 8 is a side view of a MIMO antenna according to Embodiment 2 of the present invention.
  • FIG 9 is a side view of a MIMO antenna according to a third embodiment of the present invention.
  • a third antenna unit 8.
  • the antenna unit forms two adjacent double resonances through the structure of the feed body and the radiator itself and the first and second slits.
  • an antenna unit includes a feed body 1 and a radiator 2 , and the radiator 2 is U-shaped rotated by 90°, and the radiator 2 includes a first horizontal portion 21 and a first vertical portion 22 .
  • the second horizontal portion 23 the two ends of the first vertical portion 22 are respectively connected to the first horizontal portion 21 and the second horizontal portion 23;
  • the feed body 1 is located in the U-shape, and the feed body 1 includes the second The vertical portion 11, the third horizontal portion 12, and the third vertical portion 13, the two ends of the third horizontal portion 12 are respectively connected to the second vertical portion 11 and the third vertical portion 13, and the second vertical portion 11 And the third vertical portion 13 is located on a different side of the third horizontal portion 12; between the third horizontal portion 12 and the first horizontal portion 21, there is a first slit 41, and the second vertical portion 11 is disposed adjacent to the first vertical portion 22 And a second slit 42 is formed between the second vertical portion 11 and the first vertical portion 22.
  • the antenna unit forms two adjacent double resonances through the structure of the feed body and the radiator itself and the first and second gaps, so that the antenna unit has ultra-wideband; the structure is simple The processing is convenient and the manufacturing cost is low.
  • the MIMO antenna includes a grounding plate 5 having the above antenna unit, the antenna unit being disposed perpendicular to the upper surface of the grounding plate 5 and the first horizontal portion 21 and the grounding plate 5 in the antenna unit Connected, the plurality of antenna units are divided into two antenna unit groups, and the two antenna unit groups are respectively disposed on two long sides of the grounding plate 5.
  • the MIMO antenna is equipped with a plurality of ultra-wideband antenna units, which greatly improves the performance of the MIMO antenna.
  • the number of antenna elements in the two antenna element groups is equal.
  • the antenna unit group includes a first antenna unit 6, a second antenna unit 7, a third antenna unit 8, and a fourth antenna unit 9, which are sequentially disposed along the long side of the ground plate 5, the first antenna unit 6 and the fourth antenna unit 9 is symmetrically disposed with respect to an axis passing through the center point of the long side and perpendicular to the upper surface of the ground plate 5, and the second antenna unit 7 and the third antenna unit 8 are opposite to the upper surface passing through the center point of the long side and perpendicular to the upper surface of the ground plate 5.
  • the opening of the radiator of the first antenna unit 6 is oriented in the same direction as the opening of the radiator of the second antenna unit 7, the opening of the radiator of the third antenna unit 8 and the opening of the radiator of the fourth antenna unit 9
  • the orientation is the same
  • the opening of the radiator of the third antenna unit 8 is opposite to the opening of the radiator of the first antenna unit 6; the spacing between the second antenna unit 7 and the third antenna unit 8 is larger than that of the second antenna unit 7 and The spacing between the first antenna elements 6.
  • the opening of the radiator of the first antenna unit 6 is oriented in the same direction as the opening of the radiator of the third antenna unit 8, the opening of the radiator of the second antenna unit 7 and the opening of the radiator of the fourth antenna unit 9 Towards the same, the opening of the radiator of the second antenna unit 7 is oriented opposite to the opening of the radiator of the first antenna unit 6; the spacing between the second antenna unit 7 and the third antenna unit 8 is smaller than that of the second antenna unit 7 and The spacing between the first antenna elements 6.
  • the radiator body faces the opposite two antenna units that are opposite to each other and the two first vertical portions are close to each other ("]
  • the spacing between the "shapes” may be small; the spacing of the radiator openings toward the same adjacent two antenna elements ("]” or “[[" shape) may be smaller; and the radiator openings are opposite and
  • the spacing between adjacent two antenna elements ("[]" shapes) in which the two first vertical portions are distant from each other needs to be large to ensure isolation between adjacent two antennas.
  • the housing includes a PCB and a PCB disposed inside the housing, the grounding plate 5 is the PCB, and the feeding body 1 of the antenna unit is fixed on an inner sidewall of the housing.
  • an embodiment of the present invention is as follows: as shown in FIG. 1 , an antenna unit includes a power feeding body 1 and a radiator 2 , and the radiator body 2 has a U-shaped shape rotated by 90°.
  • the radiator 2 includes a first horizontal portion 21, a first vertical portion 22, and a second horizontal portion 23, and two ends of the first vertical portion 22 are respectively connected to the first horizontal portion 21 and the second horizontal portion 23;
  • the body 1 is located in the U-shape, and the power feeding body 1 includes a second vertical portion 11, a third horizontal portion 12 and a third vertical portion 13, and two ends of the third horizontal portion 12 and the second vertical portion, respectively 11 is connected to the third vertical portion 13, and the second vertical portion 11 and the third vertical portion 13 are located on different sides of the third horizontal portion 12; there is a first between the third horizontal portion 12 and the first horizontal portion 21
  • the slit 41 has a second vertical portion 11 disposed adjacent to the first vertical portion 22 and a second slit 42 between the second vertical portion 11 and the first vertical portion 22, and the first slit 41 is connected to the second slit 42.
  • a MIMO antenna includes a grounding plate 5 having the above antenna unit, the antenna unit being disposed perpendicular to an upper surface of the grounding plate 5 and a first horizontal portion 21 of the antenna unit and the The ground plate 5 is connected; in the antenna unit, the second vertical portion 11 is located on a side of the third horizontal portion 12 away from the first horizontal portion 21, and the third vertical portion 13 is located at the third horizontal portion 12 near the first horizontal portion 21.
  • a plurality of the antenna units are divided into two antenna unit groups, and the two antenna unit groups are respectively disposed on two long sides of the ground plate 5, and preferably, the number of antenna units in the two antenna unit groups equal.
  • each antenna element group of the two antenna element groups includes four antenna elements.
  • four of the antenna units in each antenna unit group are respectively named as a first antenna unit 6, a second antenna unit 7, a third antenna unit 8, and a fourth antenna unit 9, the first antenna unit 6.
  • the second antenna unit 7, the third antenna unit 8, and the fourth antenna unit 9 are sequentially disposed along the long side of the ground plate 5, and the first antenna unit 6 and the fourth antenna unit 9 are perpendicular to the center point passing through the long side.
  • the opening of the radiator of the first antenna unit 6 is oriented in the same direction as the opening of the radiator of the second antenna unit 7, and the opening of the radiator of the third antenna unit 8 and the radiator of the fourth antenna unit 9
  • the opening faces are the same
  • the opening of the radiator of the third antenna unit 8 is opposite to the opening of the radiator of the first antenna unit 6
  • the spacing between the second antenna unit 7 and the third antenna unit 8 is larger than that of the second antenna unit The spacing between 7 and the first antenna unit 6.
  • the working range of the MIMO antenna of the present embodiment is between 3.3 and 5 GHz, covering the 5G standard planning of China.
  • the MIMO antenna reflection coefficient is better than 6 dB, and the isolation between the antenna elements is better than 12 dB.
  • Figure 5 is a graph of the overall efficiency of a MIMO antenna as a function of frequency. As can be seen from Figure 5, the overall efficiency of the antenna is better than 40% in the range of 3.3-5 GHz.
  • the current distribution diagram on the antenna unit can be observed and analyzed by the antenna when operating at frequencies of 3.5 GHz and 4.9 GHz.
  • this embodiment only analyzes the operation of the first antenna unit 6.
  • 6 is a current distribution diagram when the first antenna unit 6 operates at a frequency equal to 3.5 GHz; as can be clearly seen from FIG. 6, the current peak is distributed at the end of the first antenna unit 6 of the feed body 1 (second vertical) The portion 11) and the first antenna unit 6 are on the radiator 2.
  • Fig. 7 is a current distribution diagram when the first antenna unit 6 operates at a frequency equal to 4.9 GHz. As can be seen from Fig.
  • the current peak is distributed in the middle of the feed body 1 of the first antenna unit 6.
  • the antenna unit effectively utilizes the structure of the feed body 1 and the radiator 2 itself and the two gaps (first and second gaps) between the feed body 1 and the radiator 2 to form two adjacent double resonances. This is why the antenna unit of the present MIMO antenna has ultra-wideband.
  • a handheld device having the above MIMO antenna, such as a mobile phone, a tablet computer, a scanner, etc., comprising a housing and a PCB board disposed inside the housing, wherein the grounding plate 5 is A PCB board, the power feeding body 1 of the antenna unit is fixed on an inner side wall of the housing.
  • the embodiment only analyzes and describes 5G 8x8 MIMO operating in the 3.3 GHz-5 GHz band below 6 GHz, the antenna design principle (antenna unit) of this embodiment can also be extended to other working frequency bands and other mxn. (m and n are integers greater than 2) in a MIMO antenna system.
  • a second embodiment of the present invention is a modification of the antenna unit group in the MIMO antenna according to the first embodiment.
  • the antenna unit group includes a first antenna unit 6 and a first phase disposed along the long side of the grounding plate 5.
  • a second antenna unit 7, a third antenna unit 8, and a fourth antenna unit 9 the first antenna unit 6 and the fourth antenna unit 9 are symmetrically arranged with respect to an axis passing through the center point of the long side and perpendicular to the upper surface of the ground plate 5,
  • the two antenna elements 7 and the third antenna unit 8 are symmetrically arranged with respect to an axis passing through the center point of the long side and perpendicular to the upper surface of the ground plate 5.
  • the opening of the radiator of the first antenna unit 6 is oriented in the same direction as the opening of the radiator of the third antenna unit 8, and the opening of the radiator of the second antenna unit 7 is oriented in the same direction as the opening of the radiator of the fourth antenna unit 9,
  • the opening of the radiator of the second antenna unit 7 is oriented opposite to the opening of the radiator of the first antenna unit 6; the spacing between the second antenna unit 7 and the third antenna unit 8 is smaller than that of the second antenna unit 7 and the first antenna The spacing between cells 6.
  • the antenna unit group includes a first antenna unit 6 disposed in sequence along the long side of the grounding plate 5.
  • the second antenna unit 7, the third antenna unit 8, and the fourth antenna unit 9 the opening orientation of the radiator of the first antenna unit 6, the opening orientation of the radiator of the second antenna unit 7, and the radiator of the third antenna unit 8.
  • the opening faces are the same, the opening of the radiator of the fourth antenna unit 9 is opposite to the opening of the radiator of the first antenna unit 6; the spacing between the first antenna unit 6 and the second antenna unit 7 is equal to the second antenna unit
  • the spacing between 7 and the third antenna unit 8 is smaller than the spacing between the third antenna unit 8 and the fourth antenna unit 9.
  • the antenna unit, the MIMO antenna and the handheld device provided by the present invention form two adjacent double resonances through the structure of the feed body and the radiator itself and the first and second slits, thereby making the antenna unit Ultra-wideband; simple structure, convenient processing, low manufacturing cost; MIMO antenna can realize ultra-wideband, covering all frequency bands of 6GHz in the fifth generation mobile communication, and the antenna performance meets the requirements; MIMO antenna has vertical placement and low height Features are beneficial for applications in ultra-thin full-screen phones.

Abstract

本发明公开了天线单元、MIMO天线及手持设备，包括馈电体和辐射体，所述辐射体呈旋转90°的U字型，所述辐射体包括第一水平部、第一竖直部和第二水平部，第一竖直部的两端分别与第一水平部和第二水平部相连；馈电体位于所述U字型中，馈电体包括第二竖直部、第三水平部及第三竖直部，第三水平部的两端分别与第二竖直部和第三竖直部相连，且第二竖直部和第三竖直部位于第三水平部的不同侧；第三水平部和第一水平部之间具有第一缝隙，第二竖直部靠近第一竖直部设置且第二竖直部与第一竖直部之间具有第二缝隙。天线单元通过馈电体和辐射体自身结构以及第一、二缝隙，形成了两个相邻的双谐振，从而使得MIMO天线能够实现超宽带。

Description

天线单元、MIMO天线及手持设备 技术领域
本发明涉及移动通信技术领域，尤其涉及天线单元、MIMO天线及手持设备。
 背景技术
第五代移动通信技术(5G)将在2020年大规模商用，在未来几年中，新的移动端天线和基站天线将有很广阔的市场。在第四代移动通信(4G)系统中，2x2的多输入多输出(MIMO)天线已经被广泛研究并使用在手持移动设备中。根据目前各国的研究，5G技术相比目前4G技术，其峰值速率将增长数十倍，所以，2x2或者4x4的MIMO天线结构已经不能满足5G系统中对传输速率和连接可靠性的要求。在5G系统中，具有更多天线单元个数的MIMO天线结构，比如6x6或者8x8MIMO天线将被应用到手持设备，以实现更大的信道容量和更好的通信质量。此外，具有多天线单元的MIMO天线结构可以很好的解决多径衰落问题并提升数据吞吐量。
2017年11月9日，国家工信部公布5G频段，规划3.3GHz－3.6GHz和4.8GHz－5GHz频段作为5G系统的工作频段，其中，3.3GHz-3.4GHz频段原则上限室内使用。所以，如何设计能够覆盖上述频段的多天线的MIMO天线结构，成为目前新的研究方向。此外，在手持设备日渐趋于更薄，更窄的边框(全面屏)的大环境下，设计满足天线效率和天线相互之间隔离度的多天线的MIMO天线结构变得更加复杂。
因此，有必要设计一种超宽带的天线单元的结构以及具有该天线单元的超宽带MIMO天线，从而使得装备该MIMO天线系统的手持设备能够覆盖5G系统6GHz以下所有工作频段。
 技术问题
本发明所要解决的技术问题是：提供一种超宽带的天线单元、具有该天线单元的超宽带MIMO天线以及具有该超宽带MIMO天线的手持设备。
 技术解决方案
为了解决上述技术问题，本发明采用的技术方案为：天线单元，包括馈电体和辐射体，所述辐射体呈旋转90°的U字型，所述辐射体包括第一水平部、第一竖直部和第二水平部，第一竖直部的两端分别与第一水平部和第二水平部相连；馈电体位于所述U字型中，馈电体包括第二竖直部、第三水平部及第三竖直部，第三水平部的两端分别与第二竖直部和第三竖直部相连，且第二竖直部和第三竖直部位于第三水平部的不同侧；第三水平部和第一水平部之间具有第一缝隙，第二竖直部靠近第一竖直部设置且第二竖直部与第一竖直部之间具有第二缝隙。
本发明还采用以下技术方案：MIMO天线，包括接地板，具有上述天线单元，所述天线单元垂直于接地板的上表面设置且天线单元中的第一水平部与所述接地板相连，多个所述天线单元分为两个天线单元组，两个所述天线单元组分别设于接地板的两个长边上。
本发明还采用以下技术方案：手持设备，具有上述MIMO天线。
 有益效果
本发明的有益效果在于：天线单元通过馈电体和辐射体自身结构以及第一、二缝隙，形成了两个相邻的双谐振，从而使得天线单元具有超宽带；结构简单，加工方便、制造成本低。
 附图说明
图1为本发明实施例一的天线单元的正视图；
图2为本发明实施例一的MIMO天线的结构示意图；
图3为本发明实施例一的MIMO天线的侧视图；
图4为本发明实施例一的MIMO天线中第一、二、三、四天线单元的天线S-参数图；
图5为本发明实施例一的MIMO天线的总效率随频率变化的曲线图；
图6为本发明实施例一的MIMO天线中的第一天线单元工作在频率等于3.5GHz时的电流分布图；
图7为本发明实施例一的MIMO天线中的第一天线单元工作在频率等于4.9GHz时的电流分布图；
图8为本发明实施例二的MIMO天线的侧视图；
图9为本发明实施例三的MIMO天线的侧视图。
标号说明：
1、馈电体；
11、第二竖直部；
12、第三水平部；
13、第三竖直部；
2、辐射体；
21、第一水平部；
22、第一竖直部；
23、第二水平部；
41、第一缝隙；
42、第二缝隙；
5、接地板；
6、第一天线单元；
7、第二天线单元；
8、第三天线单元；
9、第四天线单元。
 本发明的实施方式
为详细说明本发明的技术内容、所实现目的及效果，以下结合实施方式并配合附图予以说明。
本发明最关键的构思在于：天线单元通过馈电体和辐射体自身结构以及第一、二缝隙，形成了两个相邻的双谐振。
请参照图1，天线单元，包括馈电体1和辐射体2，所述辐射体2呈旋转90°的U字型，所述辐射体2包括第一水平部21、第一竖直部22和第二水平部23，第一竖直部22的两端分别与第一水平部21和第二水平部23相连；馈电体1位于所述U字型中，馈电体1包括第二竖直部11、第三水平部12及第三竖直部13，第三水平部12的两端分别与第二竖直部11和第三竖直部13相连，且第二竖直部11和第三竖直部13位于第三水平部12的不同侧；第三水平部12和第一水平部21之间具有第一缝隙41，第二竖直部11靠近第一竖直部22设置且第二竖直部11与第一竖直部22之间具有第二缝隙42。
从上述描述可知，本发明的有益效果在于：天线单元通过馈电体和辐射体自身结构以及第一、二缝隙，形成了两个相邻的双谐振，从而使得天线单元具有超宽带；结构简单，加工方便、制造成本低。
请参照图2至图9，MIMO天线，包括接地板5，具有上述天线单元，所述天线单元垂直于接地板5的上表面设置且天线单元中的第一水平部21与所述接地板5相连，多个所述天线单元分为两个天线单元组，两个所述天线单元组分别设于接地板5的两个长边上。
由上述描述可知，MIMO天线配备多个超宽带天线单元，极大程度上提高了MIMO天线性能。
进一步的，两个天线单元组中天线单元的数目相等。
进一步的，天线单元组包括沿接地板5长边依次设置的第一天线单元6、第二天线单元7、第三天线单元8和第四天线单元9，第一天线单元6和第四天线单元9相对于经过该长边中心点且垂直于接地板5上表面的轴对称设置，第二天线单元7和第三天线单元8相对于经过该长边中心点且垂直于接地板5上表面的轴对称设置。
进一步的，第一天线单元6的辐射体的开口朝向和第二天线单元7的辐射体的开口朝向相同，第三天线单元8的辐射体的开口朝向和第四天线单元9的辐射体的开口朝向相同，第三天线单元8的辐射体的开口朝向和第一天线单元6的辐射体的开口朝向相反；第二天线单元7和第三天线单元8之间的间距大于第二天线单元7和第一天线单元6之间的间距。
进一步的，第一天线单元6的辐射体的开口朝向和第三天线单元8的辐射体的开口朝向相同，第二天线单元7的辐射体的开口朝向和第四天线单元9的辐射体的开口朝向相同，第二天线单元7的辐射体的开口朝向和第一天线单元6的辐射体的开口朝向相反；第二天线单元7和第三天线单元8之间的间距小于第二天线单元7和第一天线单元6之间的间距。
进一步的，天线单元组包括沿接地板5长边依次设置的第一天线单元6、第二天线单元7、第三天线单元8和第四天线单元9，第一天线单元6的辐射体的开口朝向、第二天线单元7的辐射体的开口朝向及第三天线单元8的辐射体的开口朝向相同，第四天线单元9的辐射体的开口朝向和第一天线单元6的辐射体的开口朝向相反；第一天线单元6和第二天线单元7之间的间距等于第二天线单元7和第三天线单元8之间的间距且小于第三天线单元8和第四天线单元9之间的间距。
由上述描述可知，天线单元中接地的辐射体整体可以起到一定程度的隔离作用，因此，辐射体开口朝向相反且两个第一竖直部相互靠近的相邻两个天线单元（“】【”形状）之间的间距可以很小；辐射体开口朝向相同的相邻两个天线单元之间（“】】”或“【【”形状）的间距可以较小；而辐射体开口朝向相反且两个第一竖直部相互远离的相邻两个天线单元之间（“【】”形状）的间距需要较大以保证相邻两个天线之间的隔离度。
手持设备，具有上述MIMO天线。
进一步的，包括壳体及设于壳体内部的PCB板，所述接地板5为所述PCB板，所述天线单元的馈电体1固定在所述壳体的内侧壁上。
实施例一
请参照图1至图9，本发明的实施例一为：如图1所示，天线单元，包括馈电体1和辐射体2，所述辐射体2呈旋转90°的U字型，所述辐射体2包括第一水平部21、第一竖直部22和第二水平部23，第一竖直部22的两端分别与第一水平部21和第二水平部23相连；馈电体1位于所述U字型中，馈电体1包括第二竖直部11、第三水平部12及第三竖直部13，第三水平部12的两端分别与第二竖直部11和第三竖直部13相连，且第二竖直部11和第三竖直部13位于第三水平部12的不同侧；第三水平部12和第一水平部21之间具有第一缝隙41，第二竖直部11靠近第一竖直部22设置且第二竖直部11与第一竖直部22之间具有第二缝隙42，第一缝隙41与第二缝隙42相连。
如图2和图3所示，一种MIMO天线，包括接地板5，具有上述天线单元，所述天线单元垂直于接地板5的上表面设置且天线单元中的第一水平部21与所述接地板5相连；天线单元中，第二竖直部11位于第三水平部12远离第一水平部21的一侧，第三竖直部13位于第三水平部12靠近第一水平部21的一侧，多个所述天线单元分为两个天线单元组，两个所述天线单元组分别设于接地板5的两个长边上，优选的，两个天线单元组中天线单元的数目相等。
接下来，本实施例对可覆盖5G系统6GHz以下所有工作频段的一种MIMO天线进行阐述，如图2和图3所示，两个天线单元组中每个天线单元组均包括四个天线单元，为方便描述，将每个天线单元组中的四个所述天线单元分别命名为第一天线单元6、第二天线单元7、第三天线单元8和第四天线单元9，第一天线单元6、第二天线单元7、第三天线单元8和第四天线单元9沿接地板5长边依次设置，且第一天线单元6和第四天线单元9相对于经过该长边中心点且垂直于接地板5上表面的轴对称设置，第二天线单元7和第三天线单元8相对于经过该长边中心点且垂直于接地板5上表面的轴对称设置。通过调节第一、二、三、四天线单元的馈电体1和与其耦合的辐射体2的尺寸以及第一、二缝隙之间的间距将能够产生覆盖3.3GHz-5GHz的谐振频率。
本实施例中，第一天线单元6的辐射体的开口朝向和第二天线单元7的辐射体的开口朝向相同，第三天线单元8的辐射体的开口朝向和第四天线单元9的辐射体的开口朝向相同，第三天线单元8的辐射体的开口朝向和第一天线单元6的辐射体的开口朝向相反；第二天线单元7和第三天线单元8之间的间距大于第二天线单元7和第一天线单元6之间的间距。
图4为第一、二、三、四天线单元的天线S-参数图，从图4中可以看出本实施例的MIMO天线的工作范围在3.3-5GHz之间，覆盖了我国5G标准规划的3.3-3.4GHz，3.4-3.6GHz以及4.8-5GHz频段，MIMO天线反射系数均优于6dB，且天线单元之间的隔离度均好于12dB。
图5为MIMO天线的总效率随频率变化的曲线图。从图5中可以看出，天线的总效率在3.3-5GHz的范围内均好于40% 。
图4和图5中给出的MIMO天线指标完全可以满足6GHz 以下的5G 8x8 MIMO天线系统在手持设备（例如手机）中使用的要求。
为了进一步地阐述本实施例MIMO天线的工作原理，可以通过观察和分析天线在频率为3.5GHz和4.9GHz工作时，天线单元上的电流分布图。为了简化，本实施例只对第一天线单元6的工作情况进行分析。图6为第一天线单元6工作在频率等于3.5GHz时的电流分布图；从图6中我们可以清楚的看到，电流峰值分布在第一天线单元6馈电体1末端（第二竖直部11）及第一天线单元6辐射体2上。图7为第一天线单元6工作在频率等于4.9GHz时电流分布图。从图7中我们可以看出，电流峰值分布在第一天线单元6馈电体1中部。本天线单元有效的利用了馈电体1和辐射体2自身结构及馈电体1与辐射体2之间的两个缝隙（第一、二缝隙），形成了两个相邻的双谐振，这正是本MIMO天线中天线单元具有超宽带的原因。
一种具有上述MIMO天线的手持设备（图未示），例如手机、平板电脑、扫码器等等，其包括壳体及设于壳体内部的PCB板，所述接地板5即为所述PCB板，所述天线单元的馈电体1固定在所述壳体的内侧壁上。
本实施例虽然只对6GHz以下的工作在3.3GHz-5GHz频段的5G 8x8 MIMO进行了分析和描述，但是本实施例的天线设计原理（天线单元）也可以扩展到其它的工作频段以及其它的mxn (m和n 为大于2的整数) MIMO天线系统中。
实施例二
请参照图8，本发明的实施例二是对实施例一MIMO天线中天线单元组的一种变形，具体为：天线单元组包括沿接地板5长边依次设置的第一天线单元6、第二天线单元7、第三天线单元8和第四天线单元9，第一天线单元6和第四天线单元9相对于经过该长边中心点且垂直于接地板5上表面的轴对称设置，第二天线单元7和第三天线单元8相对于经过该长边中心点且垂直于接地板5上表面的轴对称设置。
第一天线单元6的辐射体的开口朝向和第三天线单元8的辐射体的开口朝向相同，第二天线单元7的辐射体的开口朝向和第四天线单元9的辐射体的开口朝向相同，第二天线单元7的辐射体的开口朝向和第一天线单元6的辐射体的开口朝向相反；第二天线单元7和第三天线单元8之间的间距小于第二天线单元7和第一天线单元6之间的间距。
实施例三
请参照图9，本发明的实施例二是对实施例一MIMO天线中天线单元组的另一种变形，具体为：天线单元组包括沿接地板5长边依次设置的第一天线单元6、第二天线单元7、第三天线单元8和第四天线单元9，第一天线单元6的辐射体的开口朝向、第二天线单元7的辐射体的开口朝向及第三天线单元8的辐射体的开口朝向相同，第四天线单元9的辐射体的开口朝向和第一天线单元6的辐射体的开口朝向相反；第一天线单元6和第二天线单元7之间的间距等于第二天线单元7和第三天线单元8之间的间距且小于第三天线单元8和第四天线单元9之间的间距。
综上所述，本发明提供的天线单元、MIMO天线及手持设备，天线单元通过馈电体和辐射体自身结构以及第一、二缝隙，形成了两个相邻的双谐振，从而使得天线单元具有超宽带；结构简单，加工方便、制造成本低；MIMO天线能够实现超宽带，从而覆盖第五代移动通信中6GHz下所有频段，并且天线性能满足要求；MIMO天线具有垂直放置和高度较低的特点，有利于应用在超薄全面屏手机中。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等同变换，或直接或间接运用在相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (9)

  1. 天线单元，包括馈电体和辐射体，其特征在于：所述辐射体呈旋转90°的U字型，所述辐射体包括第一水平部、第一竖直部和第二水平部，第一竖直部的两端分别与第一水平部和第二水平部相连；馈电体位于所述U字型中，馈电体包括第二竖直部、第三水平部及第三竖直部，第三水平部的两端分别与第二竖直部和第三竖直部相连，且第二竖直部和第三竖直部位于第三水平部的不同侧；第三水平部和第一水平部之间具有第一缝隙，第二竖直部靠近第一竖直部设置且第二竖直部与第一竖直部之间具有第二缝隙。
  2. MIMO天线，包括接地板，其特征在于：具有多个如权利要求1所述的天线单元，所述天线单元垂直于接地板的上表面设置且天线单元中的第一水平部与所述接地板相连，多个所述天线单元分为两个天线单元组，两个所述天线单元组分别设于接地板的两个长边上。
  3. 根据权利要求2所述的MIMO天线，其特征在于：两个天线单元组中天线单元的数目相等。
  4. 根据权利要求3所述的MIMO天线，其特征在于：天线单元组包括沿接地板长边依次设置的第一天线单元、第二天线单元、第三天线单元和第四天线单元，第一天线单元和第四天线单元相对于经过该长边中心点且垂直于接地板上表面的轴对称设置，第二天线单元和第三天线单元相对于经过该长边中心点且垂直于接地板上表面的轴对称设置。
  5. 根据权利要求4所述的MIMO天线，其特征在于：第一天线单元的辐射体的开口朝向和第二天线单元的辐射体的开口朝向相同，第三天线单元的辐射体的开口朝向和第四天线单元的辐射体的开口朝向相同，第三天线单元的辐射体的开口朝向和第一天线单元的辐射体的开口朝向相反；第二天线单元和第三天线单元之间的间距大于第二天线单元和第一天线单元之间的间距。
  6. 根据权利要求4所述的MIMO天线，其特征在于：第一天线单元的辐射体的开口朝向和第三天线单元的辐射体的开口朝向相同，第二天线单元的辐射体的开口朝向和第四天线单元的辐射体的开口朝向相同，第二天线单元的辐射体的开口朝向和第一天线单元的辐射体的开口朝向相反；第二天线单元和第三天线单元之间的间距小于第二天线单元和第一天线单元之间的间距。
  7. 根据权利要求3所述的MIMO天线，其特征在于：天线单元组包括沿接地板长边依次设置的第一天线单元、第二天线单元、第三天线单元和第四天线单元，第一天线单元的辐射体的开口朝向、第二天线单元的辐射体的开口朝向及第三天线单元的辐射体的开口朝向相同，第四天线单元的辐射体的开口朝向和第一天线单元的辐射体的开口朝向相反；第一天线单元和第二天线单元之间的间距等于第二天线单元和第三天线单元之间的间距且小于第三天线单元和第四天线单元之间的间距。
  8. 手持设备，其特征在于：具有权利要求2-7任意一项所述的MIMO天线。
  9. 根据权利要求8所述的手持设备，包括壳体及设于壳体内部的PCB板，其特征在于：所述接地板为所述PCB板，所述天线单元的馈电体固定在所述壳体的内侧壁上。
PCT/CN2019/071574 2018-01-15 2019-01-14 天线单元、mimo天线及手持设备 WO2019137522A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/474,818 US10950953B2 (en) 2018-01-15 2019-01-14 Antenna unit, MIMO antenna and handheld device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810035964.8A CN108493590B (zh) 2018-01-15 2018-01-15 天线单元、mimo天线及手持设备
CN201810035964.8 2018-01-15

Publications (1)

Publication Number Publication Date
WO2019137522A1 true WO2019137522A1 (zh) 2019-07-18

Family

ID=63344084

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/071574 WO2019137522A1 (zh) 2018-01-15 2019-01-14 天线单元、mimo天线及手持设备

Country Status (3)

Country Link
US (1) US10950953B2 (zh)
CN (1) CN108493590B (zh)
WO (1) WO2019137522A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114865297A (zh) * 2022-05-27 2022-08-05 西安理工大学 高隔离宽带5g mimo手机天线

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108493590B (zh) 2018-01-15 2020-02-11 深圳市信维通信股份有限公司 天线单元、mimo天线及手持设备
CN108736130B (zh) * 2018-07-11 2020-01-14 Oppo广东移动通信有限公司 天线组件以及电子设备
US11367967B2 (en) * 2019-03-01 2022-06-21 Shenzhen Sunway Communication Co., Ltd. Compact 5G MIMO antenna system and mobile terminal
CN109860980B (zh) * 2019-03-01 2024-04-16 深圳市信维通信股份有限公司 一种移动终端
CN109860979B (zh) * 2019-03-01 2024-05-03 深圳市信维通信股份有限公司 应用于5g通信的移动终端
CN113964511B (zh) * 2021-10-21 2022-09-27 安徽大学 一种零净空5g超宽带mimo天线

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140375515A1 (en) * 2013-06-20 2014-12-25 Blackberry Limited Frequency tunable antenna
CN104638356A (zh) * 2015-01-30 2015-05-20 董健 一种电感耦合型等间距弯折偶极子rfid标签天线
CN105161837A (zh) * 2015-09-06 2015-12-16 中国人民解放军63680部队 一种小型化共面波导馈电宽带印刷天线
CN105470644A (zh) * 2016-01-07 2016-04-06 华南理工大学 一种毫米波mimo天线
CN106374226A (zh) * 2016-09-30 2017-02-01 深圳市信维通信股份有限公司 用于第五代无线通信的双频阵列天线
CN106910986A (zh) * 2017-04-14 2017-06-30 深圳市信维通信股份有限公司 一种多谐振超宽带nfc天线系统
CN108493590A (zh) * 2018-01-15 2018-09-04 深圳市信维通信股份有限公司 天线单元、mimo天线及手持设备

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI548145B (zh) * 2013-01-07 2016-09-01 智易科技股份有限公司 全向式天線
US9331396B2 (en) * 2013-05-06 2016-05-03 Qualcomm Incorporated Antenna structure having orthogonal polarizations
US9496614B2 (en) * 2014-04-15 2016-11-15 Dockon Ag Antenna system using capacitively coupled compound loop antennas with antenna isolation provision
CN104701623A (zh) * 2015-03-25 2015-06-10 电子科技大学 一种高隔离度mimo天线
FR3045219B1 (fr) * 2015-12-09 2017-12-15 Thales Sa Cellule rayonnante elementaire multi-bande
TWM529948U (zh) * 2016-06-01 2016-10-01 啟碁科技股份有限公司 通訊裝置
FR3052617B1 (fr) * 2016-06-14 2019-04-05 Parrot Drones Antenne wifi compacte a reflecteur en metamateriau
CN206595397U (zh) * 2017-02-27 2017-10-27 深圳市睿德通讯科技有限公司 一种多输入多输出天线
CN207910050U (zh) * 2018-01-15 2018-09-25 深圳市信维通信股份有限公司 天线单元、mimo天线及手持设备
TWI671952B (zh) * 2018-06-07 2019-09-11 啓碁科技股份有限公司 天線結構

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140375515A1 (en) * 2013-06-20 2014-12-25 Blackberry Limited Frequency tunable antenna
CN104638356A (zh) * 2015-01-30 2015-05-20 董健 一种电感耦合型等间距弯折偶极子rfid标签天线
CN105161837A (zh) * 2015-09-06 2015-12-16 中国人民解放军63680部队 一种小型化共面波导馈电宽带印刷天线
CN105470644A (zh) * 2016-01-07 2016-04-06 华南理工大学 一种毫米波mimo天线
CN106374226A (zh) * 2016-09-30 2017-02-01 深圳市信维通信股份有限公司 用于第五代无线通信的双频阵列天线
CN106910986A (zh) * 2017-04-14 2017-06-30 深圳市信维通信股份有限公司 一种多谐振超宽带nfc天线系统
CN108493590A (zh) * 2018-01-15 2018-09-04 深圳市信维通信股份有限公司 天线单元、mimo天线及手持设备

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114865297A (zh) * 2022-05-27 2022-08-05 西安理工大学 高隔离宽带5g mimo手机天线

Also Published As

Publication number Publication date
CN108493590B (zh) 2020-02-11
CN108493590A (zh) 2018-09-04
US20200243984A1 (en) 2020-07-30
US10950953B2 (en) 2021-03-16

Similar Documents

Publication Publication Date Title
WO2019137522A1 (zh) 天线单元、mimo天线及手持设备
CN108565544B (zh) 一种超宽带5g mimo天线结构
CN102570058B (zh) 复合式多天线系统及其无线通信装置
CN108565543B (zh) Mimo天线结构及具有该mimo天线结构的手持设备
WO2015096702A1 (zh) 一种多频阵列天线
CN106299727B (zh) 低互耦4单元超宽带mimo天线
US10720705B2 (en) 5G wideband MIMO antenna system based on coupled loop antennas and mobile terminal
CN102823060A (zh) 天线装置及无线通信装置
CN109888477B (zh) 应用于5g通信的双频双极化mimo天线系统及移动终端
CN109841943B (zh) 应用于5g通信的三频mimo天线系统及移动终端
US10727596B2 (en) Antenna structure
WO2020147172A1 (zh) 5g mimo 天线系统及手持设备
CN109860979B (zh) 应用于5g通信的移动终端
CN111129767B (zh) 双频天线结构
CN109860980B (zh) 一种移动终端
CN109509965B (zh) 基于耦合式环形天线的5g宽频mimo天线系统及移动终端
CN103326116A (zh) 用于移动终端的小型平面宽频带双天线系统
CN102904011A (zh) 平衡微带线过渡全模双脊集成波导馈电对称振子印刷天线
CN105846069A (zh) 一种去耦结构简单的多频段mimo手机天线
CN108963431B (zh) 一种移动通讯终端双极化sub-6GHz天线系统
CN106129600B (zh) 一种高增益毫米波网格阵列天线
CN108232436B (zh) 一种基于寄生地结构的高隔离多输入多输出天线
CN109935962A (zh) 一种垂直极化mimo天线和具有mimo天线的终端
CN207910050U (zh) 天线单元、mimo天线及手持设备
CN201781058U (zh) 分集式槽孔天线

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19738717

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19738717

Country of ref document: EP

Kind code of ref document: A1