WO2018219069A1 - Structure multi-antenne de terminal et terminal mobile - Google Patents

Structure multi-antenne de terminal et terminal mobile Download PDF

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Publication number
WO2018219069A1
WO2018219069A1 PCT/CN2018/084248 CN2018084248W WO2018219069A1 WO 2018219069 A1 WO2018219069 A1 WO 2018219069A1 CN 2018084248 W CN2018084248 W CN 2018084248W WO 2018219069 A1 WO2018219069 A1 WO 2018219069A1
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WO
WIPO (PCT)
Prior art keywords
antenna
spacers
slit
antenna structure
metal
Prior art date
Application number
PCT/CN2018/084248
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English (en)
Chinese (zh)
Inventor
黄奂衢
陈玉稳
Original Assignee
维沃移动通信有限公司
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 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Publication of WO2018219069A1 publication Critical patent/WO2018219069A1/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
    • H01Q1/36—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
    • H01Q1/52—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

Definitions

  • the present disclosure relates to the field of electronic technologies, and more particularly, to a terminal multi-antenna structure and a mobile terminal.
  • a antenna structure of the mobile terminal often has a slit 100 corresponding to a group (two or more) of the antenna arms 200. If the side of the slit is used as the radiating end of the antenna, the electric field strength is generally strong, so that it is easier to couple to the antenna on the other side of the slit, and the isolation between the multiple antennas is deteriorated.
  • the technical problem to be solved by the present disclosure is to provide an antenna structure and a mobile terminal to solve the problem of poor isolation between multiple antennas of a mobile terminal in the related art.
  • a terminal multi-antenna structure including:
  • the metal portion is provided with at least one slit, and the metal structures on both sides of the fracture correspond to at least one antenna arm respectively;
  • At least two spacers for isolating the antenna arms on both sides are disposed in the slit, the spacers are electrically conductive, and after each two adjacent ones are electrically connected by a predetermined frequency selection network One of the spacers is grounded.
  • a mobile terminal comprising: the terminal multi-antenna structure as described above.
  • the terminal multi-antenna structure of the embodiment of the present disclosure has a metal portion forming an antenna, the metal portion is provided with at least one slit, and the metal structures on both sides of the fracture correspond to at least one antenna arm respectively; At least two spacers on the two sides of the antenna arm, the spacer is electrically conductive, and after each two adjacent spacers are electrically connected by a predetermined frequency selection network, one of the spacers is grounded. In this way, by adding spacers in the gap between the antennas, the mutual coupling between the multiple antennas on both sides of the fracture is reduced, the isolation between the multiple antennas is improved, and the antenna performance is optimized.
  • each two adjacent isolation spacers selects a network electrical connection by a preset frequency, so that a better isolation between multiple antennas of the same frequency or close to the working frequency is improved, and the multiple antennas with the same frequency or working frequency are improved.
  • the isolation and improved freedom of antenna performance debugging Moreover, the break width of the slit to be increased can be reduced, the appearance effect is ensured, and the overall product competitiveness and user experience can be maintained. The problem of poor isolation between multiple antennas of a mobile terminal in the related art is solved.
  • FIG. 1 is a schematic diagram of a terminal multi-antenna structure in the related art
  • FIG. 2 is a schematic diagram of a multi-antenna structure of the terminal of the present disclosure
  • FIG. 3 is a schematic diagram of a specific implementation of a multi-antenna structure of a terminal according to the present disclosure
  • FIG. 4 is another schematic diagram of a multi-antenna structure of the terminal of the present disclosure.
  • FIG. 5 is a schematic diagram of another specific implementation of the multi-antenna structure of the terminal of the present disclosure.
  • a terminal multi-antenna structure including:
  • the metal portion 1, the metal portion 1 is provided with at least one slit 11, the metal structures on both sides of the fracture 11 respectively correspond to at least one antenna arm 12;
  • At least two spacers 2 for isolating the two side antenna arms 12 are disposed in the slit 11 , the spacers 2 are electrically conductive, and each two adjacent ones of the spacers 2 pass a preset frequency After the network 3 is electrically connected, one of the spacers 2 is grounded.
  • each two adjacent spacers 2 are electrically connected through a preset frequency selection network 3, so that a better isolation between multiple antennas of the same frequency or close to the operating frequency is improved, and the same frequency or working frequency is improved.
  • the spacer 2 is a separate structure inserted in the slit.
  • the spacer 2 may be made of a metal material (but is not limited thereto).
  • At least two spacers 2 for isolating the two antenna arms 12 can be provided in each of the slits 11 respectively.
  • the metal part 1 can be an inner metal outline of a metal frame, a metal ring, a metal shell or a non-metal material, or a multi-antenna structure in a non-metallic shape and a contour.
  • a part of the metal casing may be laterally hollowed out, divided into an antenna area and a main ground, the antenna area is used as the metal part 1, and a slit 11 is arranged in the longitudinal direction of the antenna area, and is broken into at least two.
  • Antenna arm 12 is used when a metal casing is used, a part of the metal casing may be laterally hollowed out, divided into an antenna area and a main ground, the antenna area is used as the metal part 1, and a slit 11 is arranged in the longitudinal direction of the antenna area, and is broken into at least two.
  • Antenna arm 12 is arranged in the longitudinal direction of the antenna area, and is broken into at least two.
  • the terminal multi-antenna structure of the embodiment of the present disclosure by adding the spacer 2 to the slit 11 between the antennas, the mutual coupling between the multiple antennas on both sides of the fracture 11 is reduced, the isolation between the multiple antennas is improved, and the optimization is optimized. Antenna performance. And each two adjacent spacers 2 are electrically connected through the preset frequency selection network 3, so that the better isolation between the multi-antennas at the same frequency or close to the working frequency is improved, and the same frequency or the operating frequency is improved.
  • the isolation between the antennas improves the freedom of antenna performance debugging.
  • the breaking width of the slit 11 to be increased can be reduced, the appearance effect is ensured, and the overall product competitiveness and user experience can be maintained.
  • the problem of poor isolation between multiple antennas of a mobile terminal in the related art is solved.
  • two of the spacers 2 are disposed in the slit 11
  • the spacers 2 are electrically connected to each other through a preset frequency selection network 3 and grounded.
  • the spacer 2 can be close to the short-circuit state on one side of the fracture 11 and close to the open on the other antenna.
  • the state, so that the antenna on both sides of the fracture 11 can have different responses and effects, so there is a higher degree of freedom in antenna performance debugging.
  • the position optimization of the spacer 2 can be performed, that is, the two spacers 2 as a whole (but not limited thereto) can be disposed in the fracture 11 in a centered manner. It can also be placed in the slit 11 in a non-centered manner to achieve better antenna performance.
  • the two spacers 2 may be adjusted as a whole (but not limited thereto) to be offset from the side antenna, that is, to be open to the other side.
  • the antennas are close to reduce the effect on the performance of the side antenna due to the presence of a short circuit condition.
  • this method can often reduce the need to increase the breaking width of the slit 11 to ensure the appearance effect and have better antenna performance.
  • Each antenna arm 12 can be connected to the ground through a feed source 5, and the feed source 5 generally refers to a portion where the feed line is connected to the antenna.
  • the feed line generally refers to a transmission line whose RF front end is connected to the antenna.
  • the metal portion 1 in which the antenna arm 12 and the slit 11 are disposed may be the top or bottom of the metal middle frame (but is not limited thereto).
  • Two slits 11 may be arranged at the top or bottom of the metal middle frame to break the metal middle frame into three metal structures, wherein the metal structure between the two fractures 11 is divided into two antenna arms 12 by grounding, and the other two The metal structures act as an antenna arm 12, respectively, thereby breaking the top or bottom of the metal middle frame into four antenna arms 12, each antenna arm 12 being grounded through a feed.
  • two spacers 2 (a first spacer 21 and a second spacer 22) are disposed in the slit 11, and the two spacers 2 are independent structures inserted in the slit 11.
  • the two spacers 2 are electrically connected to each other through a preset frequency selection network 3 and grounded.
  • the preset frequency selection network 3 and the feed 5 are disposed between the metal middle frame and the main ground 4 of the terminal circuit.
  • the two isolation sheets 2 are electrically connected to each other through the preset frequency selection network 3, so that even multiple antennas with the same frequency or close to the working frequency can have better isolation, which improves the performance of the antenna. Degree of freedom.
  • the two spacers can be disposed in the slit in a centered or non-centered manner as a whole (but not limited thereto), thereby achieving better antenna performance.
  • the spacer 2 to the slit 11 between the antennas, the mutual coupling between the multiple antennas on both sides of the slit 11 is reduced, the isolation between the multiple antennas is improved, and the antenna performance is optimized. Moreover, the breaking width of the slit 11 to be increased can be reduced, the appearance effect is ensured, and the overall product competitiveness and user experience can be maintained. Moreover, even multiple antennas with the same frequency or close to the working frequency can have better isolation, improve the isolation between multiple antennas with the same frequency or working frequency, and improve the degree of freedom of antenna performance debugging.
  • the second spacer 22 located in the middle is grounded.
  • the spacer 2 can be close to the short-circuit state on one side of the fracture 11 and close to the open on the other antenna.
  • the state, so that the antenna on both sides of the fracture 11 can have different responses and effects, so there is a higher degree of freedom in antenna performance debugging.
  • the position optimization of the spacer 2 can be performed, that is, the three spacers 2 as a whole (but not limited thereto) can be disposed in the fracture 11 in a centered manner. It can also be placed in the slit 11 in a non-centered manner to achieve better antenna performance.
  • the three spacers 2 may be adjusted as a whole (but not limited thereto) to deviate from the side antenna, that is, to present an open state to the other side.
  • the antennas are close to reduce the effect on the performance of the side antenna due to the presence of a short circuit condition.
  • this method can often reduce the need to increase the breaking width of the slit 11 to ensure the appearance effect and have better antenna performance.
  • Each of the antenna arms 12 can be connected to the ground through a feed source.
  • the feed source generally refers to a portion where the feed line is connected to the antenna.
  • the feed line generally refers to a transmission line whose RF front end is connected to the antenna.
  • the metal portion 1 in which the antenna arm 12 and the slit 11 are disposed may be the top or bottom of the metal middle frame (but is not limited thereto).
  • Two slits 11 may be arranged at the top or bottom of the metal middle frame to break the metal middle frame into three metal structures, wherein the metal structure between the two fractures 11 is divided into two antenna arms 12 by grounding, and the other two The metal structures act as an antenna arm 12, respectively, thereby breaking the top or bottom of the metal middle frame into four antenna arms 12, each antenna arm 12 being grounded through a feed.
  • three spacers 2 (a first spacer 21, a second spacer 22 and a third spacer 23) are disposed in the slit 11, and the three spacers 2 are independent structures inserted in the slit 11.
  • the second spacers 22 are grounded again.
  • the preset frequency selection network 3 and the feed 5 are disposed between the metal middle frame and the main ground 4 of the terminal circuit.
  • the second spacer 22 is grounded again, so that even between multiple antennas of the same frequency or close to the operating frequency. It can have better isolation and improve the freedom of antenna performance debugging.
  • the three spacers can be disposed in the slit in a centered or uncentered manner as a whole (but not limited to) to achieve better antenna performance.
  • the spacer 2 to the slit 11 between the antennas, the mutual coupling between the multiple antennas on both sides of the slit 11 is reduced, the isolation between the multiple antennas is improved, and the antenna performance is optimized. Moreover, the breaking width of the slit 11 to be increased can be reduced, the appearance effect is ensured, and the overall product competitiveness and user experience can be maintained. Moreover, even multiple antennas with the same frequency or close to the working frequency can have better isolation, improve the isolation between multiple antennas with the same frequency or working frequency, and improve the degree of freedom of antenna performance debugging.
  • the preset frequency selection network 3 as referred to herein may be combined by one or more of a capacitor, an inductor, a magnetic bead, a resistor and a filter by series and/or parallel.
  • the preset frequency selection network 3 is an adjustable frequency selection network or a fixed (ie, non-adjustable) frequency selection network. The specific settings can be made according to actual needs.
  • the preset frequency selection network 3 may be a network having a specific frequency selection function that meets the requirements obtained by combining the experimental data.
  • the adjustable frequency selection network is a frequency selective network with adjustable parameters
  • the fixed frequency selection network is a frequency selection network with non-adjustable parameters.
  • the spacer 2 can be placed in the slit 11 in a centered or uncentered manner to further optimize the antenna performance.
  • the plurality of spacers 2 may be disposed as a whole in a centered or not centered manner.
  • the length of the grounding path of the spacer 2 is smaller than the length of the shortest antenna arm 12 on both sides of the slit 11.
  • the width of the slit 11 is less than or equal to 100 mm; the total thickness of all the spacers 2 in the slit 11 is less than or equal to 50 mm.
  • the cross-sectional area of the spacer 2 may be smaller than the cross-sectional area of the metal structure on both sides of the slit 11 so that the spacer 2 is not covered by the non-metallic material in the slit 11.
  • all of the conductive structures described herein, such as spacers, may be made of a metal material (but are not limited thereto).
  • the multi-antenna structure of the terminal in the embodiment of the present disclosure utilizes a relatively simple, mature, stable, and low-cost design implementation scheme, which reduces the mutual coupling between multiple antennas on both sides of the fracture 11 and improves the inter-connectivity between the multiple antennas. Isolation optimizes antenna performance.
  • the plurality of the above-mentioned spacers 2 are connected to the ground through an adjustable or fixed frequency selection network, etc., and the antennas on both sides of the fracture 11 are designed to generate different impedance load environments as the pair of fractures.
  • the present disclosure may have a greater chance of achieving better multi-antenna performance without significantly increasing the width of the appearance slit 11 and thus maintaining a better overall product competitiveness and user experience.
  • the spirit of the present disclosure is directed to multiple antennas (not limited to the metal ring and the broken joint on the metal shell, as long as it is applicable between multiple antennas, that is, it can also be used for the non-metallic material shape and the multi-antenna structure in the contour. Inserting a plurality of (one or more) of the above-mentioned spacers 2, and selecting a frequency selective network via (adjustable or fixed) inductors/capacitors/beads/resistors/filters or their series/parallel mixing The phase connection is connected to the ground to serve as the spacer 2 for isolation between the multiple antennas to achieve better overall product competitiveness and user experience. Therefore, the scope of protection includes but is not limited to the above-mentioned embodiments and the structures therein. Shape, form, size, position and number, etc.
  • a mobile terminal comprising: the terminal multi-antenna structure as described in the above embodiments.
  • the mobile terminal of the present disclosure may be, for example, a computer, a tablet computer, a personal digital assistant (PDA), or a vehicle-mounted computer.
  • PDA personal digital assistant

Abstract

L'invention concerne une structure multi-antenne de terminal et un terminal mobile. La structure multi-antenne de terminal comprend : une partie métallique, qui est pourvue d'au moins un joint de rupture, des structures métalliques sur les deux côtés du joint de rupture correspondant respectivement à au moins un bras d'antenne ; au moins deux feuilles d'isolation sont disposées dans le joint de rupture et utilisées pour isoler les bras d'antenne au niveau des deux côtés, les feuilles d'isolation sont électroconductrices, et pour toutes les deux feuilles d'isolation adjacentes connectées électriquement par l'intermédiaire d'un réseau de sélection de fréquence prédéfini, l'une des feuilles d'isolation est mise à la terre.
PCT/CN2018/084248 2017-05-31 2018-04-24 Structure multi-antenne de terminal et terminal mobile WO2018219069A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710401390.7A CN107257023B (zh) 2017-05-31 2017-05-31 一种终端多天线结构及移动终端
CN201710401390.7 2017-05-31

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WO2018219069A1 true WO2018219069A1 (fr) 2018-12-06

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WO (1) WO2018219069A1 (fr)

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CN106887678A (zh) * 2017-03-28 2017-06-23 维沃移动通信有限公司 一种移动终端天线及移动终端
CN107275760B (zh) * 2017-05-31 2019-09-27 维沃移动通信有限公司 一种终端多天线结构及移动终端
CN107257023B (zh) * 2017-05-31 2019-11-22 维沃移动通信有限公司 一种终端多天线结构及移动终端
CN108258407B (zh) * 2018-01-12 2019-11-15 维沃移动通信有限公司 一种天线及无线通信电子设备
CN113054428A (zh) * 2019-12-29 2021-06-29 昆山睿翔讯通通信技术有限公司 改善隔离度的天线结构及移动终端

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CN104103888B (zh) * 2014-08-06 2016-09-21 广东欧珀移动通信有限公司 一种手机及其天线

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Publication number Priority date Publication date Assignee Title
EP1690319A1 (fr) * 2002-12-04 2006-08-16 Raython Company Module actif integre et peu encombrant a bande large pour systemes radar et de communication
EP1889326B1 (fr) * 2005-06-02 2011-04-06 Lockheed Martin Corporation Antenne balayee electroniquement a ondes millimetriques
CN103682625A (zh) * 2012-09-18 2014-03-26 中兴通讯股份有限公司 一种多输入多输出天线及移动终端
CN104218317A (zh) * 2013-06-03 2014-12-17 中兴通讯股份有限公司 一种印刷电路板及采用多入多出天线技术的无线终端
CN107257023A (zh) * 2017-05-31 2017-10-17 维沃移动通信有限公司 一种终端多天线结构及移动终端

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