WO2016123924A1 - Terminal et antenne à entrées multiples et sorties multiples - Google Patents

Terminal et antenne à entrées multiples et sorties multiples Download PDF

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Publication number
WO2016123924A1
WO2016123924A1 PCT/CN2015/084839 CN2015084839W WO2016123924A1 WO 2016123924 A1 WO2016123924 A1 WO 2016123924A1 CN 2015084839 W CN2015084839 W CN 2015084839W WO 2016123924 A1 WO2016123924 A1 WO 2016123924A1
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WO
WIPO (PCT)
Prior art keywords
connecting portion
patch
antenna
radiation patch
microstrip
Prior art date
Application number
PCT/CN2015/084839
Other languages
English (en)
Chinese (zh)
Inventor
蔡凌云
Original Assignee
中兴通讯股份有限公司
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
Priority claimed from CN201520082229.4U external-priority patent/CN204497364U/zh
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2016123924A1 publication Critical patent/WO2016123924A1/fr

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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

Definitions

  • This paper relates to the field of communications, and in particular to a multi-input multi-output antenna and a terminal.
  • MIMO Multiple-Input Multiple-Output
  • This technology is the core technology of LTE and the fourth generation mobile communication system (4G).
  • the application of MIMO technology has been limited by some factors.
  • An important factor is the number and spacing of the antennas.
  • the terminal device on the one hand, the user requires miniaturization of a high quality user experience, and on the other hand, the MIMO antenna system requires each antenna to have balanced radio frequency and electromagnetic performance, and has high isolation and low envelope correlation coefficient.
  • the position of the antenna is placed as far as possible in the layout.
  • the isolation of the antenna is large enough at a distance of half a working wavelength, so that the layout can achieve a certain effect.
  • the following methods are usually used, such as: increase Antenna spacing; increase parasitic conductor or parasitic gap structure; introduce electromagnetic band gap EBG structure; use defective structure to slot the floor; increase network to change antenna feed and phase change antenna mutual coupling; increase neutralization line, decoupling Circuit.
  • Increase the antenna spacing is often limited by the installation volume of the antenna in practical applications; increasing the parasitic conductor or parasitic gap structure increases the headroom of the antenna; the introduction of the EBG structure, the antenna floor engraving and the addition of the network all require a larger antenna floor, the same It is not conducive to the miniaturization of the antenna, while achieving a narrow bandwidth.
  • Embodiments of the present invention provide a multi-input multi-output antenna and a terminal, which can be used in a small space, and have high isolation and good radiation efficiency.
  • a multiple input multiple output antenna comprising: a dielectric substrate;
  • the multiple input multiple output antenna further includes:
  • a first excitation port disposed on an upper surface of the dielectric substrate, coupled to the first radiation patch, for feeding the first radiation patch;
  • a second excitation port disposed on an upper surface of the dielectric substrate is coupled to the second radiation patch for feeding the second radiation patch.
  • the first radiation patch comprises:
  • first connecting portion a first connecting portion, a second connecting portion and a third connecting portion connected in sequence, wherein one end of the second connecting portion is connected to an anode of the first excitation port, and one end of the first connecting portion is The negative terminal of the first excitation port is connected.
  • first connecting portion, the second connecting portion, and the third connecting portion have a shape of a meander line.
  • the second radiation patch comprises:
  • a fourth connecting portion a fifth connecting portion, and a sixth connecting portion connected in sequence, wherein one end of the fifth connecting portion is connected to an anode of the second excitation port, and one end of the fourth connecting portion is The negative terminal of the second excitation port is connected.
  • the dielectric substrate is made of a ceramic material, a polymer material or a ferromagnetic material.
  • a terminal comprising a multiple input multiple output antenna as described above.
  • the multiple input multiple output antenna in the embodiment of the present invention is composed of two completely symmetrical antenna units, wherein the radiation patches of each antenna unit are fed through respective corresponding excitation ports, and then corresponding to the respective shorted columns to corresponding a microstrip patch in which the inductance of the shorting post itself and the coupling capacitance generated by the radiating patch and the microstrip patch cancel out, thereby expanding the bandwidth; at the same time, the two radiating patches generate a coupling current on the opposite antenna unit. The coupling current also reaches the two microstrip patches through the two shorting posts.
  • the two microstrip patches form a cancellation microstrip, and the reverse currents generated inside the two microstrips cancel each other out, thereby
  • the isolation of the two antenna elements is improved; in addition, the outer branches of the microstrip will continue to radiate electromagnetic waves, which in turn makes the frequency of the antenna unit low, thereby realizing the miniaturization and effective reduction of the multi-input and multi-output antennas. Size, increased isolation, and increased bandwidth.
  • FIG. 1 is a front elevational view of a multiple input multiple output antenna according to an embodiment of the present invention
  • FIG. 2 is a side view of a multiple input multiple output antenna according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural view of an upper surface of a dielectric substrate according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a lower surface of a dielectric substrate according to an embodiment of the present invention.
  • FIG. 5 is a front view of a terminal according to an embodiment of the present invention.
  • Figure 6 is a side elevational view of the terminal in accordance with an embodiment of the present invention.
  • an embodiment of the present invention provides a multiple input multiple output antenna, including: a dielectric substrate 9; and a first radiation patch symmetrically disposed on an upper surface of the dielectric substrate 9. 1 and a second radiation patch 2; a first microstrip patch 3 and a second microstrip patch 4 symmetrically disposed on a lower surface of the dielectric substrate 9; symmetrically disposed first shorting posts 5 and second shorting posts 6, wherein The two ends of the first shorting stud 5 are respectively connected to the first radiating patch 1 and the first microstrip patch 3, and the two ends of the second shorting stub 6 are respectively connected to the second radiating patch 2 and the second microstrip patch 4 connection.
  • the multiple input multiple output antenna in the embodiment of the present invention is composed of two completely symmetric antenna units, wherein each antenna unit includes: a radiation patch, a microstrip patch, and a shorting column, and each of the radiation patches passes through a corresponding one.
  • the corresponding short-circuiting post is passed to the corresponding microstrip patch, wherein the inductance of the short-circuiting column itself and the coupling capacitance generated by the radiation patch and the microstrip patch cancel out, thereby expanding the bandwidth;
  • the two radiating patches generate a coupling current on the opposite antenna unit, and the coupling current also reaches the two microstrip patches through the two shorting posts.
  • the two microstrip patches constitute a pair of micro-strips.
  • the reverse current generated inside the two microstrips cancels each other, thereby improving the isolation of the two antenna elements; in addition, the outer branches of the microstrip will continue to radiate electromagnetic waves, which in turn makes the frequency of the antenna unit low.
  • the dielectric substrate 9 may be made of a ceramic material, a polymer material, or a ferromagnetic material.
  • the multiple input multiple output antenna further includes: a first excitation port 7 disposed on an upper surface of the dielectric substrate 9, connected to the first radiation patch 1 for feeding the first radiation patch 1; A second excitation port 8 on the upper surface of the dielectric substrate 9 is connected to the second radiation patch 2 for feeding the second radiation patch 2.
  • the first radiation patch 1 includes:
  • the first connecting portion 101, the second connecting portion 102, and the third connecting portion 103 are sequentially connected, wherein one end of the second connecting portion 102 is connected to the positive pole of the first excitation port 7, and the first connecting portion 101 One end is connected to the negative pole of the first excitation port 7.
  • the first excitation port 7 may also be reversely disposed, that is, one end of the second connection portion 102 may be connected to the negative pole of the first excitation port 7, and one end of the first connection portion 101 is first.
  • the positive terminal of the excitation port 7 is connected.
  • the first connecting portion 101, the second connecting portion 102, and the third connecting portion 103 may each be designed as a meander line to reduce the antenna clearance area; wherein the first excitation port 7 may also be located at the first connecting portion 101 and the first
  • the antennas can be operated in different frequency bands, and the asymmetric feeding refers to the first connecting portion 101 and the second connecting portion.
  • the portion 102 does not constitute an axisymmetric structure, thereby forming an asymmetric feed.
  • the second radiating patch 2 includes:
  • the fourth connecting portion 201, the fifth connecting portion 202, and the sixth connecting portion 203 are sequentially connected, wherein one end of the fifth connecting portion 202 is connected to the positive pole of the second excitation port 8, and one end and the second end of the fourth connecting portion 201 are connected.
  • the negative terminal of the excitation port 8 is connected.
  • the second excitation port 8 may also be reversely disposed, that is, one end of the fifth connection portion 202 may be connected to the negative pole of the first excitation port 8, and one end and the second end of the fourth connection portion 101 may be The positive terminal of the excitation port 8 is connected.
  • the fourth connecting portion 201, the fifth connecting portion 202, and the sixth connecting portion 203 may each be designed as a meander line to reduce the antenna clearance area; the second excitation port 8 may also be located at the fourth connecting portion 201 and the fifth connection.
  • first radiation patch 1 and the second radiation patch 2 can be designed into an L shape or other curved shapes as needed, which is not limited by the embodiment.
  • the spacing between the first microstrip 3 and the second microstrip 4 can be set as needed to achieve higher isolation; while the first microstrip 3 and the second microstrip
  • the shape of the sheet 4 can be designed as needed to achieve adjustment of the antenna impedance bandwidth and operating frequency.
  • the thickness of the first shorting column 5 and the second shorting column 6 can be adjusted according to actual design requirements to achieve adjustment of the antenna impedance bandwidth.
  • a terminal is further provided.
  • the terminal includes a multiple input multiple output antenna as described above, and the terminal further includes an antenna floor 10 and an antenna.
  • the floor panel 10 includes an upper surface antenna floor 11 and a lower surface antenna floor 12.
  • the terminal includes, but is not limited to, a mobile phone, and can also be applied to all places where the multi-input multi-output antenna can be applied, such as wireless routing.
  • the multiple input multiple output antenna in the embodiment of the present invention is composed of two completely symmetrical antenna units, wherein the radiation patches of each antenna unit are fed through respective corresponding excitation ports, and then corresponding to the respective shorted columns to corresponding a microstrip patch in which the inductance of the shorting post itself and the coupling capacitance generated by the radiating patch and the microstrip patch cancel out, thereby expanding the bandwidth; at the same time, the two radiating patches generate a coupling current on the opposite antenna unit. The coupling current also reaches the two microstrip patches through the two shorting posts.
  • the two microstrip patches form a cancellation microstrip, and the reverse currents generated inside the two microstrips cancel each other out, thereby
  • the isolation of the two antenna elements is improved; in addition, the outer branches of the microstrip will continue to radiate electromagnetic waves, which in turn makes the frequency of the antenna unit low, thereby realizing the miniaturization and effective reduction of the multi-input and multi-output antennas. Size, increased isolation, and increased bandwidth.
  • the multi-input multi-output antenna of the embodiment of the invention can be used in a small space size, and has excellent performance, can effectively improve the isolation between the two antennas, and solves the problem of inter-antenna interference in the multi-input multi-output antenna system. It lays a foundation for the application of multi-input and multi-output antenna technology in small terminal devices such as mobile phones and wireless access.

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  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

La présente invention concerne une antenne à entrées multiples et sorties multiples, et un terminal. L'antenne à entrées multiples et sorties multiples comprend : un substrat diélectrique ; une première plaque rayonnante et une seconde plaque rayonnante qui sont disposées symétriquement sur une surface supérieure du substrat diélectrique ; une première plaque microruban et une seconde plaque microruban qui sont disposées symétriquement sur une surface inférieure du substrat diélectrique ; et un premier pilier de court-circuit et un second pilier de court-circuit qui sont disposés symétriquement, deux extrémités du premier pilier de court-circuit étant connectées respectivement à la première plaque rayonnante et à la première plaque microruban, et deux extrémités du second pilier de court-circuit étant connectées respectivement à la seconde plaque rayonnante et à la seconde plaque microruban.
PCT/CN2015/084839 2015-02-05 2015-07-22 Terminal et antenne à entrées multiples et sorties multiples WO2016123924A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201520082229.4 2015-02-05
CN201520082229.4U CN204497364U (zh) 2015-01-27 2015-02-05 一种多输入多输出天线及终端

Publications (1)

Publication Number Publication Date
WO2016123924A1 true WO2016123924A1 (fr) 2016-08-11

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106410406A (zh) * 2016-10-28 2017-02-15 福州大学 一种双频低剖面紧耦合高隔离度mimo天线
CN108281783A (zh) * 2018-03-06 2018-07-13 厦门大学嘉庚学院 折线螺旋偶极子-互补缝隙复合超宽频带天线
CN110034399A (zh) * 2019-05-16 2019-07-19 努比亚技术有限公司 多输入多输出天线和移动终端
CN112421231A (zh) * 2020-10-23 2021-02-26 普联国际有限公司 一种高隔离度天线
CN114094329A (zh) * 2021-11-22 2022-02-25 江苏科技大学 一种对称式顶部Peano分形加载的微带贴片天线

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080094282A1 (en) * 2006-10-20 2008-04-24 Hon Hai Precision Industry Co., Ltd. Multiple input multiple output antenna
CN101316008A (zh) * 2008-06-13 2008-12-03 哈尔滨工业大学 具有高隔离低相关特性的mimo移动终端多天线
CN102570030A (zh) * 2012-01-18 2012-07-11 华南理工大学 利用宽带t型中和线提高隔离度的mimo天线
CN103811869A (zh) * 2012-11-08 2014-05-21 中兴通讯股份有限公司 一种多输入多输出天线系统及移动终端

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080094282A1 (en) * 2006-10-20 2008-04-24 Hon Hai Precision Industry Co., Ltd. Multiple input multiple output antenna
CN101316008A (zh) * 2008-06-13 2008-12-03 哈尔滨工业大学 具有高隔离低相关特性的mimo移动终端多天线
CN102570030A (zh) * 2012-01-18 2012-07-11 华南理工大学 利用宽带t型中和线提高隔离度的mimo天线
CN103811869A (zh) * 2012-11-08 2014-05-21 中兴通讯股份有限公司 一种多输入多输出天线系统及移动终端

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106410406A (zh) * 2016-10-28 2017-02-15 福州大学 一种双频低剖面紧耦合高隔离度mimo天线
CN108281783A (zh) * 2018-03-06 2018-07-13 厦门大学嘉庚学院 折线螺旋偶极子-互补缝隙复合超宽频带天线
CN108281783B (zh) * 2018-03-06 2023-07-28 厦门大学嘉庚学院 折线螺旋偶极子-互补缝隙复合超宽频带天线
CN110034399A (zh) * 2019-05-16 2019-07-19 努比亚技术有限公司 多输入多输出天线和移动终端
CN112421231A (zh) * 2020-10-23 2021-02-26 普联国际有限公司 一种高隔离度天线
CN114094329A (zh) * 2021-11-22 2022-02-25 江苏科技大学 一种对称式顶部Peano分形加载的微带贴片天线
CN114094329B (zh) * 2021-11-22 2023-10-03 江苏科技大学 一种对称式顶部Peano分形加载的微带贴片天线

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