WO2017008502A1 - Structure d'antenne entrées multiples sorties multiples (mimo) et terminal - Google Patents

Structure d'antenne entrées multiples sorties multiples (mimo) et terminal Download PDF

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Publication number
WO2017008502A1
WO2017008502A1 PCT/CN2016/073377 CN2016073377W WO2017008502A1 WO 2017008502 A1 WO2017008502 A1 WO 2017008502A1 CN 2016073377 W CN2016073377 W CN 2016073377W WO 2017008502 A1 WO2017008502 A1 WO 2017008502A1
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WO
WIPO (PCT)
Prior art keywords
antenna
printed
antenna structure
mimo
present
Prior art date
Application number
PCT/CN2016/073377
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English (en)
Chinese (zh)
Inventor
舒超凡
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
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 WO2017008502A1 publication Critical patent/WO2017008502A1/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
    • H01Q1/12—Supports; Mounting means
    • 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

Definitions

  • the utility model relates to the field of multiple-input multiple-output (MIMO) antennas, in particular to a MIMO antenna structure and a terminal.
  • MIMO multiple-input multiple-output
  • a MIMO antenna is a device that uses multiple antennas simultaneously for transmitting and receiving signals at the transmitting end and the receiving end. If multiple antennas are small relative to each other, it may cause mutual coupling between multiple antennas, resulting in an antenna between the antennas. The correlation is increased, thereby reducing the communication capacity and also reducing the radiation efficiency of the antenna. In order to reduce the coupling between multiple antennas in a MIMO antenna, it is usually necessary to increase the distance between the antennas, which brings about the following two problems:
  • the size of each antenna in the MIMO antenna will be set larger, which will form a limited space with the terminal. Contradiction; for example, when a MIMO antenna needs to transmit and receive a low-band signal and a high-band signal in an LTE system, the size of each antenna in the MIMO antenna is relatively large, and thus, the mobile terminal in which the MIMO antenna is located is difficult to satisfy the space of the MIMO antenna. Claim.
  • the embodiments of the present invention are expected to provide a MIMO antenna structure and a terminal, which can reduce the physical size of the antenna while transmitting and receiving multi-band signals.
  • Embodiments of the present invention provide a multi-input multi-output antenna structure including multiple antennas, and electrical isolation between the antennas is formed; each antenna includes a printed antenna, and a bracket antenna in the form of a bracket, the printed antenna and the antenna The bracket antenna forms an electrical connection.
  • the printed antenna is loaded with a chip inductor.
  • a loop antenna structure is formed between the printed antenna and the bracket antenna.
  • each antenna is electrically isolated from an adjacent antenna by reference.
  • the printed antenna in the above solution is electrically connected to the bracket antenna by at least one elastic piece.
  • the signal feeding point and the grounding point of each antenna are located in the printed antenna.
  • each antenna in the antenna structure is located on the same printed circuit board.
  • the embodiment of the present invention further provides a terminal, including the antenna structure of any one of the above.
  • the MIMO antenna structure and the terminal provided by the embodiments of the present invention can reduce the physical size of the antenna and reduce the transmission and reception while transmitting and receiving multi-band signals by adopting a combination of a printed antenna and a bracket antenna in each antenna.
  • the electromagnetic absorption ratio (SAR) value of the frequency signal can be reduced.
  • FIG. 1 is a schematic structural view of an antenna inside a first embodiment of a MIMO antenna structure according to the present invention
  • FIG. 2 is a top plan view of a second embodiment of a MIMO antenna structure of the present invention.
  • FIG. 3 is a perspective view of a second embodiment of a MIMO antenna structure of the present invention.
  • FIG. 4 is a schematic diagram showing actual measurement results of a S-parameter of a MIMO antenna structure in a second embodiment of the present invention.
  • the embodiment of the present invention proposes a MIMO antenna structure, the MIMO antenna structure includes a plurality of antennas, and electrical isolation is formed between each antenna; here, each antenna can be used for transmitting and receiving signals.
  • each antenna includes a printed antenna 100 and a support antenna 101.
  • the printed antenna 100 is an antenna that can be printed on a printed circuit board.
  • the stent antenna 101 is an antenna fixed by a bracket; here, the printed antenna 100 is generally presented in a two-dimensional plane, and the stent antenna 101 is generally presented in three dimensions.
  • each antenna in the MIMO antenna structure may be located at any position on the same printed circuit board.
  • the trace form of the printed antenna, the trace form of the support antenna, and the proportion of both in the antenna clearance area may be The layout of each antenna on the printed circuit board is set.
  • the printed antenna 100 is electrically connected to the support antenna 101.
  • the printed antenna 100 can be electrically connected to the support antenna 101 through the elastic piece.
  • the number and position of the elastic pieces can be set according to the layout of the antenna.
  • the printed antenna 100, the elastic piece and the support antenna 101 are combined to form a monopole antenna, unipolar day
  • the line is used to provide low frequency resonance of the antenna when the antenna transmits and receives low frequency signals, and the frequency band of the low frequency signal may be 698 MHz-960 MHz.
  • the effective electrical length of the monopole antenna is one quarter of the wavelength of the low frequency signal. Since the wavelength of the low frequency signal is relatively long, it is difficult to realize a small size monopole antenna for transmitting and receiving low frequency signals in the prior art.
  • the printed antenna 100 is loaded with a chip inductor, that is, the printed antenna 100 is connected with a chip inductor, and the chip inductor can be used to increase the effective electrical power of the monopole antenna.
  • the length can also compensate for the capacitive effect caused by the small size of the monopole antenna, thereby reducing the actual physical size of the monopole antenna receiving the low frequency signal.
  • the number of chip inductors, the parameters of each chip inductor, the routing form of the monopole antenna, and the trace width of the monopole antenna can be selected according to the frequency of the low frequency signal that needs to be transmitted and received.
  • the parameters of each chip inductor may be an inductance value, a parasitic capacitance value, a DC resistance value, and the like.
  • a loop antenna structure is formed between the printed antenna 100 and the rack antenna 101, and the loop antenna structure is used to provide a high frequency of antenna operation when the antenna transmits and receives high frequency signals.
  • the frequency band of the high frequency signal can be 2500MHz-2690MHz; the effective electrical length of the loop antenna structure is one-half of the wavelength of the high frequency signal.
  • the ring size of the loop antenna structure and the width of the trace around the loop antenna structure may be set according to the frequency of the transmitted and received high frequency signals.
  • the antenna fixed by the bracket since the antenna fixed by the bracket is usually presented in three dimensions, there is a possibility that the SAR value is too high when transmitting and receiving the high frequency signal;
  • the printed antenna 100 since the printed antenna 100 has a planar two-dimensional shape, the loop antenna structure formed between the printed antenna 100 and the cradle antenna 101 can effectively reduce the SAR value of the high frequency signal.
  • the loop antenna structure can reduce a small amount of surface waves, thereby effectively reducing mutual interference between the antennas in the MIMO antenna structure.
  • each antenna is electrically isolated from an adjacent antenna by reference, where there is only one reference ground for the MIMO antenna structure.
  • the electrical isolation of the reference ground the correlation between the individual antennas in the MIMO antenna structure can be reduced.
  • the signal feeding point and the grounding point of each antenna are located in the printed antenna, and the feeding mode of each antenna may be a microstrip feeding mode or a coplanar waveguide feeding. Mode or coupled feed mode.
  • the feeding mode of each antenna can be selected according to the layout of each antenna on the printed circuit board.
  • the MIMO antenna structure includes two antennas: a primary antenna and a secondary antenna; each antenna of the MIMO antenna structure is used for transmitting and receiving LTE high-band signals and LTE low-band signals, where LTE high-band signals are used. It can be 2500MHz-2690MHz, and the LTE low-band signal can be 698MHz-960MHz.
  • FIG. 2 is a top plan view of a second embodiment of a MIMO antenna structure according to the present invention
  • FIG. 3 is a perspective view of a second embodiment of the MIMO antenna structure of the present invention
  • FIG. 2 and FIG. 3 show a main antenna of the MIMO antenna structure.
  • 21 and the sub antenna 22 are both located on the printed circuit board 201.
  • the size of the printed circuit board 201 is 60 mm * 95 mm, and the main antenna 21 and the sub antenna 22 are both located at the bottom of the printed circuit board 201, and the main antenna 21 and the sub antenna 22 are provided. Electrical isolation is formed between the reference grounds.
  • the main antenna 21 includes a first printed antenna 200 and a first bracket antenna 207.
  • a first loop antenna structure 209 is formed between the first printed antenna 200 and the first bracket antenna 207.
  • the first printed antenna 200 and the first bracket antenna 207 The electrical connection is formed by the elastic pieces, and the first printed antenna 200, the first support antenna 207, and the elastic pieces between the two are combined to form the first monopole antenna 210.
  • the first printed antenna 200 is loaded with a first chip inductor 206, and the main antenna signal feed point 202 and the main antenna ground point 203 are both disposed on the first printed antenna 200.
  • the secondary antenna 22 includes a second printed antenna 213 and a second bracket antenna 208, and a second loop antenna structure 211 is formed between the second printed antenna 213 and the second bracket antenna 208; between the second printed antenna 213 and the second bracket antenna 208
  • the electrical connection is formed by the shrapnel, and the second printed antenna 213, the second bogie antenna 208, and the shrapnel between the two are combined to form the second monopole antenna 212.
  • the second printed antenna 213 is loaded with a second chip inductor 214, and the secondary antenna signal feed point 204 and the secondary antenna ground point 205 are both disposed on the second printed antenna 213.
  • the implementation of the MIMO antenna structure in the second embodiment of the present invention is the same as the implementation of the MIMO antenna structure in the first embodiment of the present invention, and will not be described in detail herein.
  • the following is a description of the measured results of the MIMO antenna structure parameters in the second embodiment of the present invention.
  • the MIMO antenna structure in the second embodiment of the present invention is actually measured.
  • the curve S11 is used to indicate the efficiency of the main antenna
  • the curve S22 is the efficiency of the sub antenna
  • the curve S21 is the correlation between the main antenna and the sub antenna.
  • the embodiment of the present invention further provides a terminal, which includes any one of the MIMO antenna structures in the foregoing embodiments.

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  • Details Of Aerials (AREA)

Abstract

L'invention concerne une structure d'antenne entrées multiples sorties multiples, qui comprend une pluralité d'antennes entre lesquelles est présente une isolation électrique. Chaque antenne comprend une antenne à circuits imprimés et une antenne à équerre en forme d'équerre, et l'antenne à circuits imprimés est connectée électriquement à l'antenne à équerre. L'invention concerne en outre un terminal.
PCT/CN2016/073377 2015-07-10 2016-02-03 Structure d'antenne entrées multiples sorties multiples (mimo) et terminal WO2017008502A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201520498445.7U CN204885426U (zh) 2015-07-10 2015-07-10 一种多输入多输出天线结构和终端
CN201520498445.7 2015-07-10

Publications (1)

Publication Number Publication Date
WO2017008502A1 true WO2017008502A1 (fr) 2017-01-19

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Application Number Title Priority Date Filing Date
PCT/CN2016/073377 WO2017008502A1 (fr) 2015-07-10 2016-02-03 Structure d'antenne entrées multiples sorties multiples (mimo) et terminal

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CN (1) CN204885426U (fr)
WO (1) WO2017008502A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109509962A (zh) * 2018-11-19 2019-03-22 惠州硕贝德无线科技股份有限公司 一种用于5g手机终端的双频mimo天线结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204885426U (zh) * 2015-07-10 2015-12-16 西安中兴新软件有限责任公司 一种多输入多输出天线结构和终端

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101242034A (zh) * 2007-02-09 2008-08-13 宏达国际电子股份有限公司 小型化的多频天线
CN101950856A (zh) * 2010-07-19 2011-01-19 中兴通讯股份有限公司 一种多频段天线装置及其应用终端
CN102714353A (zh) * 2009-11-27 2012-10-03 脉冲芬兰有限公司 Mimo天线
CN104471790A (zh) * 2014-04-24 2015-03-25 华为终端有限公司 天线、天线***和通信装置
CN204885426U (zh) * 2015-07-10 2015-12-16 西安中兴新软件有限责任公司 一种多输入多输出天线结构和终端

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101242034A (zh) * 2007-02-09 2008-08-13 宏达国际电子股份有限公司 小型化的多频天线
CN102714353A (zh) * 2009-11-27 2012-10-03 脉冲芬兰有限公司 Mimo天线
CN101950856A (zh) * 2010-07-19 2011-01-19 中兴通讯股份有限公司 一种多频段天线装置及其应用终端
CN104471790A (zh) * 2014-04-24 2015-03-25 华为终端有限公司 天线、天线***和通信装置
CN204885426U (zh) * 2015-07-10 2015-12-16 西安中兴新软件有限责任公司 一种多输入多输出天线结构和终端

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109509962A (zh) * 2018-11-19 2019-03-22 惠州硕贝德无线科技股份有限公司 一种用于5g手机终端的双频mimo天线结构
CN109509962B (zh) * 2018-11-19 2023-10-20 惠州硕贝德无线科技股份有限公司 一种用于5g手机终端的双频mimo天线结构

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