WO2017128485A1 - Système d'antenne et terminal mobile - Google Patents

Système d'antenne et terminal mobile Download PDF

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Publication number
WO2017128485A1
WO2017128485A1 PCT/CN2016/074846 CN2016074846W WO2017128485A1 WO 2017128485 A1 WO2017128485 A1 WO 2017128485A1 CN 2016074846 W CN2016074846 W CN 2016074846W WO 2017128485 A1 WO2017128485 A1 WO 2017128485A1
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WO
WIPO (PCT)
Prior art keywords
metal
trace
frame strip
antenna system
mobile terminal
Prior art date
Application number
PCT/CN2016/074846
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English (en)
Chinese (zh)
Inventor
沙成江
Original Assignee
宇龙计算机通信科技(深圳)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.)
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Publication date
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Publication of WO2017128485A1 publication Critical patent/WO2017128485A1/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
    • 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
    • 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
    • H01Q1/36—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
    • H01Q1/36—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
    • 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

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to an antenna system and a mobile terminal.
  • the design of the mobile terminal housing has also received attention.
  • the design of the metal shell has become the trend and trend of mobile terminal design due to its structural strength advantage and the all-metal material texture advantage, and it is more and more popular among users.
  • the all-metal back cover design is a category of mobile terminal design and is one of the research hotspots.
  • the mobile terminal of the all-metal back cover cannot effectively radiate or accept the electromagnetic model, which is liable to cause a drop in antenna performance.
  • the prior art has done some research on the all-metal back cover, and compared the application of the traditional antennas PIFA, MONOPOLE and LOOP in the terminal of the all-metal back cover, and found that these antenna structures can not both take care of the antenna.
  • the radiation performance does not destroy the consistency of the appearance of the metal back shell or the problem of large space occupation.
  • the prior art proposes a novel coupled feed antenna for a clean-free metal back shell, comprising a PCB board 01 and an antenna body 02 disposed on the PCB board, as shown in FIG.
  • the antenna design can meet the requirements of the full metal back cover of the mobile terminal, the resonant frequency is mainly changed by changing the slot size, the adjustment is not flexible enough, the direction is not adjustable, and the design requires a large antenna routing area and The height cannot meet the demand for the ultimate appearance of thin, high-screen ratios of mobile terminals.
  • Embodiments of the present invention provide an antenna system and a mobile terminal, which can greatly reduce the difficulty of the implementation of the structure and improve the radiation of the antenna by a simple feed structure design, a small metal trace area, and a novel antenna lead to the radiating element. Performance, you can also flexibly adjust the antenna resonance frequency while adjusting the antenna directivity.
  • an antenna system which may include:
  • the reflecting unit is an all-metal back cover of the mobile terminal
  • the excited unit, the stimulated unit is the first metal trace
  • the all-metal back cover is provided with a feeding point, the feeding point is connected with the first metal trace, and the first metal trace is coupled with the second metal trace.
  • the directing radiation unit comprises a global positioning system GPS directing radiation unit and/or a wireless local area network WIFI leading radiation unit .
  • the size of the second metal trace Adjustable the shape of the second metal trace is adjustable, and the distance between the second metal trace and the first metal trace is adjustable.
  • the all metal The back cover comprises a metal back shell, a left metal frame strip and a right metal frame strip, the left metal frame strip is connected to the left end of the metal back shell, the right metal frame strip is connected to the right end of the metal back shell, and the metal back shell is a non-slotted structure.
  • the metal back shell and the left metal frame strip and the right metal frame strip are integrated structures. .
  • the antenna system further includes:
  • the non-metallic bracket includes a non-metal upper bracket and a non-metal lower bracket.
  • One end of the non-metal upper bracket is connected to the top end of the left metal frame strip, and the other end of the non-metal upper bracket is connected to the top end of the right metal frame strip.
  • the metal lower bracket is connected to the bottom end of the left metal frame strip, and the other end of the non-metal lower bracket is connected to the bottom end of the right metal frame strip.
  • the first metal trace and the second metal trace are both located after the whole metal The upper end of the cover and adjacent to the non-metallic upper bracket; or,
  • the first metal trace and the second metal trace are both located at the lower end of the all metal back cover and adjacent to the non-metal lower bracket.
  • a second aspect of the present invention provides a mobile terminal, including an antenna system, where the antenna system includes:
  • the reflecting unit is an all-metal back cover of the mobile terminal
  • An excitation unit wherein the stimulated unit is a first metal trace
  • the directing radiation unit is a second metal trace
  • a feeding point is disposed on the all-metal back cover, the feeding point is connected to the first metal trace, and the first metal trace is coupled to the second metal trace
  • the directing radiation unit comprises a global positioning system GPS directing radiation unit and/or a wireless local area network WIFI guiding Radiation unit.
  • the second metal trace The size of the second metal trace is adjustable, and the spacing between the second metal trace and the first metal trace is adjustable.
  • the all-metal back cover comprises a metal back shell, a left metal frame strip and a right metal frame strip, wherein the left metal frame strip is connected to the left end of the metal back shell, and the right metal frame strip is connected to the right end of the metal back shell
  • the metal back shell is a slitless structure.
  • the frame strip is a one-piece structure.
  • the non-metallic bracket includes the non-metal upper bracket and the non-metal bracket a lower bracket, one end of the non-metal upper bracket is connected to a top end of the left metal frame strip, and the other end of the non-metal upper bracket is connected to a top end of the right metal frame strip, the non-metal lower bracket and the bottom The bottom end of the left metal frame strip is connected, and the other end of the non-metal lower bracket is connected to the bottom end of the right metal frame strip.
  • the first metal trace and the second metal trace are both located At an upper end of the all-metal back cover and adjacent to the non-metal upper support; or
  • the first metal trace and the second metal trace are both located at a lower end of the all-metal back cover and adjacent to the non-metal lower bracket.
  • An antenna system is provided in an embodiment of the present invention, including a reflection unit, a stimulated unit, and a directing radiation unit.
  • the reflective unit is an all-metal back cover of the mobile terminal, and the feeding point is provided on the all-metal back cover, the stimulated unit is the first metal trace, and the feeding point can be connected with the first metal trace, so that the antenna system Can be realized by a simple feed structure design, and the lead radiation unit is a second metal trace, the first metal trace can be coupled with the second metal trace, through the first metal trace and the second metal trace Adjusting can reduce the area occupied by the metal traces, thereby greatly reducing the difficulty in realizing the structure of the antenna system, and since the second metal trace is not a slot antenna obtained by opening a gap in the circumference of the all-metal back cover, the antenna The resonant frequency and directivity can also be flexibly adjusted.
  • FIG. 1 is a schematic view showing the assembly of an antenna system in the prior art
  • FIG. 2 is a front elevational view showing the structure of an antenna system in the prior art
  • FIG. 3 is a first structural diagram of an antenna system according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural view of an all-metal back cover of an antenna system according to an embodiment of the present invention.
  • FIG. 5 is a schematic view showing an assembly structure of an all-metal back cover and a non-metal bracket of an antenna system according to an embodiment of the present invention
  • FIG. 6 is a second structural diagram of an antenna system according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of return loss of an antenna system according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
  • Embodiments of the present invention provide an antenna system and a mobile terminal, which can greatly reduce the difficulty of the implementation of the structure and improve the radiation of the antenna by a simple feed structure design, a small metal trace area, and a novel antenna lead to the radiating element. Performance, you can also flexibly adjust the antenna resonance frequency while adjusting the antenna directivity.
  • the conventionally disclosed use on the all-metal back cover mobile terminal is a conventional PIFA antenna utilizing a systematic coupling metal branch, as shown in FIG. 1, the antenna includes a PCB board 01 and an antenna body 02 disposed on the PCB board. . As shown in FIG. 2, the antenna body 02 includes a feed structure. The feed structure is divided into a first feed branch 0202 and a second feed branch 0203 by a feed point 0201. The first feed branch 0202 and the first feed branch respectively A parasitic coupling branch 0204 is coupled to a second parasitic coupling branch 0205, which is coupled to the first parasitic coupling branch 0204.
  • the antenna structure design is relatively complicated, and the antenna routing area and height are large, which cannot meet the requirements of the current terminal requirements, high screen ratio, etc. Appearance needs, and
  • the resonance frequency is mainly adjusted by changing the coupling pitch between the feed branch and the parasitic coupling branch.
  • the adjustment is relatively simple, not flexible enough, and the antenna direction is not adjustable, which cannot meet the higher technical requirements of the mobile terminal.
  • the antenna system includes a reflective unit.
  • a metal trace can be connected to the all-metal back cover through the feeding point, so that the feeding structure of the antenna system is relatively simple, and the guiding radiation unit is a second metal trace, which can be coupled with the first metal trace. Adjusting the first metal trace and the second metal trace can not only reduce the area occupied by the metal trace, thereby reducing the difficulty of the antenna system structure, improving the radiation performance of the antenna, and flexibly adjusting the antenna resonance frequency and Directionality.
  • an embodiment of the antenna system in the embodiment of the present invention includes:
  • the reflecting unit may be an all-metal back cover 1 of the mobile terminal
  • the stimulated unit, the stimulated unit may be the first metal trace 2;
  • the directing radiation unit may be the second metal trace 3;
  • a feed point 4 may be provided on the all-metal back cover 1, and the feed point 101 may be connected to the first metal trace 2, and the first metal trace 2 may be coupled to the second metal trace 3.
  • the first metal trace 2 and the second metal trace 3 may be shaped metal sheets.
  • the reflection unit, the excitation unit and the directing radiation unit may constitute an antenna system provided by an embodiment of the present invention based on an all-metal back cover design that is both aesthetic and textured.
  • the all-metal back cover 1 of the mobile terminal is a reflection unit, and the set feed point 101 can be connected with the first metal trace 2 as the stimulated unit, and the entire feed structure is relatively simple in design, which reduces the complexity of the antenna system design.
  • a large area of the all-metal back cover 1 also serves as a reference ground for the antenna system, so that the design of the feed point is more flexible.
  • the second metal trace 3 which is coupled to the first metal trace 1 as a lead radiation unit, is the main radiator of the antenna system, and can be used to flexibly adjust the antenna radiation and directivity, and occupy less metal traces.
  • the area is advantageous for realizing the structure of the antenna system, and it is also easy to meet the needs of the extreme appearance such as the thinness of the mobile terminal and the proportion of the high screen.
  • another embodiment of the antenna system in the embodiment of the present invention includes:
  • the all-metal back cover 1 may include a metal back shell 101, a left metal frame strip 102, and a right metal frame strip 103.
  • the left metal frame strip 102 may be connected to the left end of the metal back shell 101
  • the right metal frame strip 103 may be connected to the right end of the metal back shell 101
  • the metal back shell 101 may be a non-slotted structure.
  • the all-metal back cover 1 of the embodiment except the above-mentioned metal back shell 1, the left metal frame strip 102 and the right metal frame strip 103, may also comprise only the metal back.
  • the shell 101 is not limited herein.
  • the full metal back cover 1 is the metal back shell 101, in the practical application, the left metal frame strip 102 and the right metal frame strip 103 in this embodiment may also be non-metal materials, specifically not here. Make a limit.
  • the metal back shell 101 and the left metal frame strip 102 and the right metal frame strip 103 may have a unitary structure.
  • the metal back shell 101 and the left metal frame strip 102 and the right metal frame strip 103 in this embodiment may also be a combined splicing structure in practical applications, as long as the full metal is satisfied.
  • the back cover 1 is made of an all-metal material, which is not limited herein.
  • the antenna system in this embodiment may further include: a non-metal bracket 4, which may include a non-metal upper bracket 401 and The non-metal lower bracket 402 is such that the signal of the antenna can be radiated, thereby improving the radiation performance of the antenna system.
  • One end of the non-metal upper bracket 401 may be connected to the top end of the left metal frame strip 102, and the other end of the non-metal upper bracket 401 is connected to the top end of the right metal frame strip 103, and the non-metal lower bracket 402 and the left metal frame strip 102 are The bottom end is connected, and the other end of the non-metal lower bracket 402 is connected to the bottom end of the right metal frame strip 103.
  • the material of the non-metal bracket 4 in this embodiment may be plastic or other types of non-metal materials. As long as it has a certain structural strength, it does not affect the radiation performance of the antenna. Make a limit.
  • the non-metal upper bracket 401 and the non-metal lower bracket 402 in this embodiment may be a U-shaped structure or a linear structure as long as the left metal frame strip 102 and the right metal frame strip 102 can be used.
  • the middle frame structure of the mobile terminal is formed, which is not limited herein.
  • the all-metal back cover 1 in this embodiment may be provided with a physical function opening, such as a camera, a left metal frame strip 102, a right metal frame strip 103 or a non-metal.
  • the bracket 4 can be provided with an opening corresponding to the physical function button, such as an opening of a volume adjustment button, an opening of a power button, an opening of a USB interface, and the like.
  • first metal trace 2 and the second metal trace 3 in this embodiment may both be located at the upper end of the all-metal back cover 1 and adjacent to the non-metal upper bracket 401; or
  • the first metal trace 2 and the second metal trace 3 are both located at the lower end of the all-metal back cover 1 and adjacent to the non-metal lower support.
  • the antenna system in this embodiment adopts the design concept of an all-metal back cover in order to meet the requirements of the appearance trend of the mobile terminal. Since the metal material easily shields the signal of the antenna, the non-metal upper bracket 401 and the non-metal are used.
  • the lower bracket 402 is connected to the all-metal back cover 1, and the first metal trace 2 and the second metal trace 3 can be disposed at the upper end or the lower end of the all-metal back cover 1, and according to the actual situation, the non-metal upper bracket 401 or non- The metal lower brackets 402 are adjacent to each other, so that the signals of the antennas can be radiated through the non-metal brackets 4, thereby effectively reducing the signal loss of the antenna, thereby improving the radiation performance of the antenna system.
  • the first metal trace 2 and the second metal trace 3 of the antenna system in this embodiment are not attached to the all-metal back cover 1, but are relatively attached to the back cover of the mobile terminal.
  • the first metal trace 2 and the second metal trace 3 are located at the upper or lower end of the all-metal back cover 1 in a relative position.
  • the mobile terminal can also utilize the all-metal back cover 1 as a reference ground, that is, the circuit board of the mobile terminal can be provided on the all-metal back cover, which fully saves the internal space of the mobile terminal and is beneficial to the mobile terminal. Thin.
  • the positions of the all-metal back cover 1 and the first metal trace 2 and the second metal trace 3 are further described. It can be understood that the whole metal is not affected by the antenna radiation performance.
  • the cover 1 can have various forms, and is not limited to the integrated structure.
  • the positions of the first metal trace 2 and the second metal trace 3 can also be flexibly adjusted.
  • the design of the entire antenna system is relatively simple, and the adjustable range is large. It can also meet the needs of the ultimate appearance of thin, high-screen ratios of mobile terminals.
  • another embodiment of the antenna system in the embodiment of the present invention further includes:
  • the directing radiation unit may include a global positioning system GPS directing radiation unit and/or a wireless local area network WIFI leading radiation unit.
  • the guiding radiation unit includes a GPS directing radiation unit and the WIFI Leading to the radiating unit, that is, the antenna system is a combined GPS and WIFI antenna system, as shown in FIG. 6, the second metal trace 3 may include an adjustable GPS metal trace 301 and an adjustable WIFI metal trace 302, the combined antenna The system can work in both the GPS and WIFI bands.
  • the adjustable GPS metal trace 301 and the adjustable WIFI metal trace 302 are connected to form a metal trace, that is, the second metal trace 3 is a non-breakpoint structure, but is adjustable.
  • the coupling positions of the GPS metal traces 301 and the adjustable metal traces 302 and the first metal traces 2 may be different, and are not limited herein.
  • the second metal trace 3 connected by the adjustable GPS metal trace 301 and the adjustable WIFI metal trace 302 is used as the lead radiation unit of the antenna system.
  • the abscissa in the figure is the frequency (Frequency), the unit is GHz (GHZ), and the ordinate is the return loss parameter (S-Parameter), the unit is dB. From the figure, we can see that there are two troughs, One trough is a GPS band, and the second trough is a WIFI band. It can be seen that the antenna system of the embodiment of the present invention can be a GPS and WIFI two-in-one system.
  • the size of the second metal trace 3 is adjustable, the shape of the second metal trace 3 is adjustable, and the distance between the second metal trace 3 and the first metal trace 2 is Adjustable.
  • the second metal trace 3 can be adjusted, for example, the adjustable GPS metal trace 301 and the adjustable WIFI metal trace 302 can be obtained by adjusting the shape of the second metal trace 3, and The size of the two metal traces 3 can adjust the resonant frequency of the antenna. Similarly, by adjusting the spacing between the second metal trace 3 and the first metal trace 2, the antenna resonance frequency can be adjusted, and the radiation of the antenna can also be adjusted. direction.
  • the GPS frequency band in this embodiment The surface current is mainly distributed on the right side of the first metal trace 2 near the feed point 101, and the inner side of the right side edge of the second metal trace 3, and the GPS metal trace 301 can be adjusted. Therefore, by adjusting the size of the adjustable GPS metal trace 301, the resonant frequency of the GPS antenna can be adjusted, the shape and position of the adjustable GPS metal trace 301 and the distance from the first metal trace 1 can be adjusted, and the GPS antenna can be adjusted.
  • Radiation direction specifically, GPS antenna can cover GPS (Global Positioning System), GLONASS (Global Navigation Satellite System), Galileo Positioning System (Galileo Positioning System) And the frequency band of the navigation system such as Beidou.
  • the surface current of the WIFI band in the present embodiment is mainly distributed on the first metal trace 2
  • the WIFI metal trace 302 can be adjusted near the left side of the feed point 101 and the left side of the trace line portion of the second metal trace. Therefore, the resonant frequency of the WIFI antenna can be adjusted by adjusting the size and shape of the adjustable WIFI metal trace 302. Specifically, the WIFI antenna can cover the 2.4 GHz band.
  • the surface current of the reflective unit of the antenna system is mainly distributed at the feed point 101.
  • the position area of the all-metal back cover 1 corresponding to the first metal trace 2 and the second metal trace 3 indicates that the all-metal back cover 1 is an important component of the antenna system as a reference ground for the antenna system.
  • the radiation loss caused by the user to the antenna system can be reduced, thereby improving the radiation performance of the antenna system.
  • the size and shape of the second metal trace 3 and the distance from the first metal trace 2 can be flexibly adjusted, so that the antenna can cover a plurality of frequency bands and can work in the low frequency band and the high frequency band at the same time.
  • the GPS band and the WIFI band the combined antenna system can not only reduce the structural design requirements of the antenna system for the all-metal back cover of the mobile terminal, but also meet the performance requirements of various network standards of the mobile terminal in the future.
  • the second metal trace 3 by adjusting the second metal trace 3, the high performance and directionality of the antenna can be adjusted, and the flexibility of adjusting the resonant frequency of the antenna is significantly improved, so that the antenna system has very good achievability and Mass production.
  • the embodiment of the present invention further provides a mobile terminal.
  • the mobile terminal includes the antenna system in any of the above embodiments.
  • the mobile terminal in this embodiment may be a smart phone, a tablet computer, or a navigator, as long as it is a mobile terminal device having an antenna system, which is not limited herein.
  • the mobile terminal provided in this embodiment has all the beneficial effects of the antenna system by providing the antenna system in any of the above embodiments, and details are not described herein again.

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Abstract

Selon un mode de réalisation, la présente invention concerne un système d'antenne. Au moyen d'une conception de structure d'alimentation simple, d'une zone de câblage métallique relativement petite, et d'une nouvelle unité d'orientation de rayonnement d'antenne, le système d'antenne peut considérablement réduire les difficultés de réalisation de structures d'antenne, améliorer les performances de rayonnement d'une antenne, régler de manière flexible la fréquence de résonance d'une antenne, et régler la directivité d'une antenne. Le système d'antenne selon le mode de réalisation de la présente invention comprend : une unité réfléchissante, qui est un couvercle arrière entièrement métallique d'un terminal mobile ; une unité excitée, qui est un premier fil métallique ; et une unité d'orientation de rayonnement, qui est un second fil métallique. La couvercle arrière entièrement métallique est pourvu d'un point d'alimentation connecté au premier fil métallique, et le premier fil métallique est couplé au second fil métallique. Selon un mode de réalisation, la présente invention concerne également un terminal mobile pouvant utiliser le système d'antenne décrit ci-dessus.
PCT/CN2016/074846 2016-01-27 2016-02-29 Système d'antenne et terminal mobile WO2017128485A1 (fr)

Applications Claiming Priority (2)

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CN201610057262.0A CN105811074A (zh) 2016-01-27 2016-01-27 一种天线系统以及移动终端
CN201610057262.0 2016-01-27

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