WO2016173485A1 - Antenne à fente et terminal mobile - Google Patents

Antenne à fente et terminal mobile Download PDF

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Publication number
WO2016173485A1
WO2016173485A1 PCT/CN2016/080210 CN2016080210W WO2016173485A1 WO 2016173485 A1 WO2016173485 A1 WO 2016173485A1 CN 2016080210 W CN2016080210 W CN 2016080210W WO 2016173485 A1 WO2016173485 A1 WO 2016173485A1
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WO
WIPO (PCT)
Prior art keywords
antenna
matching network
slot
metal frame
disposed
Prior art date
Application number
PCT/CN2016/080210
Other languages
English (en)
Chinese (zh)
Inventor
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 WO2016173485A1 publication Critical patent/WO2016173485A1/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
    • H01Q1/36—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
    • 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

Definitions

  • the present disclosure relates to the field of antenna technologies, and in particular, to a slot antenna and a mobile terminal.
  • the mobile terminal with the metal middle frame poses a great challenge to the antenna in terms of bandwidth and design complexity, especially in the case where the metal middle frame cannot be broken.
  • a topology of one feed point and one ground point can be used to generate a relatively good low frequency resonance, and in the high frequency band, multiple ground points are used, and the grounding position and the grounding of the low frequency topology are grounded.
  • the location is different.
  • the mobile terminal adopting this scheme adopts an extremely complicated grounding matching network.
  • a technical problem that needs to be urgently solved at present is how to simplify the structure of the slot antenna while taking into consideration the high and low frequency performance.
  • the technical problem to be solved by the embodiments of the present disclosure is to provide a slot antenna and a mobile terminal, which can simplify the structure of the slot antenna while taking into consideration high and low frequency performance.
  • a slot antenna including a metal block, a metal frame, at least two ground plates, and at least one set of antenna components, the antenna assembly including an antenna feed, Antenna unit, and at least two sets of matching networks,
  • the metal frame is disposed along an outer circumference of the metal block, and forms a gap with the metal block;
  • the at least two grounding strips are disposed in the gap to ground the metal frame and the metal block, and the at least two grounding strips are respectively disposed on the first side and the second side of the metal frame On the side, the first side edge is opposite to the second side edge;
  • the antenna assembly is disposed in the slot, wherein the antenna feed is disposed between the metal block and the antenna unit, and the matching network is disposed between the antenna unit and the metal frame.
  • a gap length between two adjacent grounding strips is adapted to the transverse mode and the longitudinal mode of the low frequency resonance.
  • the distance from the grounding strip to the third side is 50 mm to 100 mm, wherein the third side is located between the first side and the second side of the metal frame.
  • the at least two sets of matching networks include a first matching network and a second matching network, wherein the first matching network exhibits different equivalent values on two resonant frequencies of the low frequency.
  • the inductive component in the first matching network and the second matching network is a thin line integrated on the antenna unit.
  • the first matching network and the capacitive element in the second matching network are slot-coupled.
  • the second matching network is a slot coupling between the antenna unit and the third side, wherein the third side is located on the first side of the metal frame and the Between the second sides.
  • the second matching network is connected between the 1/4 to 1/2 portions of the third side.
  • the first matching network is connected to a connection between the first side and the third side.
  • a third matching network is further connected between the antenna unit and the metal block.
  • a fourth matching network is further connected between the metal frame and the metal block.
  • the embodiment of the present disclosure also discloses a mobile terminal in which the above slot antenna is disposed.
  • the embodiments of the present disclosure include the following advantages:
  • the slot antenna in the embodiment of the present disclosure has a simple structure, and is directly grounded by providing a grounding piece on both sides, thereby avoiding the signal passing through the grounding point and generating the upper antenna (such as a GPS antenna, a WIFI antenna, and a diversity antenna). Interference, and without complex ground matching, the matching loss is small, and the antenna assembly takes into account the low-frequency and high-frequency resonant modes through at least two sets of matching networks.
  • FIG. 1 is a schematic structural view of a slot antenna in an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of another slot antenna in the embodiment of the present disclosure.
  • 3 is an equivalent value curve of a first matching network in different frequency bands in an embodiment of the present disclosure
  • FIG. 4 is a circuit diagram of a first matching network in an embodiment of the present disclosure.
  • FIG. 5 is a circuit diagram of a second matching network in an embodiment of the present disclosure.
  • FIG. 6 is a diagram showing a return loss of a slot antenna in an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of another slot antenna in the embodiment of the present disclosure.
  • the slot antenna includes a metal block 11, a metal frame 12, a ground plate 13, and an antenna assembly 14.
  • the metal block 11 may be a PCB or a screen metal bracket or a metal battery cover or the like.
  • the metal frame 12 is a continuous annular structure without a break point. Of course, the annular surface may be provided with a notch for mounting a card or inserting a connecting wire, which does not affect the continuity of the metal frame 12.
  • the metal frame 12 is disposed around the outer periphery of the metal block 11 and forms a slit 111 between the metal block 11.
  • the slit 111 may be filled with a non-conductive medium such as air or glass.
  • the grounding piece 13 is disposed in the slit 111 to ground the metal frame 12 and the metal block 11. Specifically, the grounding strips 13 are fixedly connected to the metal frame 12 and the metal frame 11, respectively. The grounding strips 13 are at least two and are respectively disposed on two opposite sides of the metal frame 12.
  • two grounding lugs 13 are disposed on the opposite first side 121 and second side 122 of the metal frame 12, respectively.
  • the two grounding lugs 13 divide the slit 111 into two U-shaped slits.
  • One of the U-shaped slits can be used to set the above antenna assembly, and the other U-shaped slit can be integrated with other antennas.
  • the antenna assembly 14 is disposed in the lower U-shaped slot in FIG. 1, and the upper U-shaped slot is integrated with other antennas, such as a GPS antenna, a WIFI antenna, and a diversity antenna.
  • the grounding strip 13 may also have multiple.
  • a third grounding strip may be disposed in the U-shaped slit of FIG. 1, but the grounding strip needs to be connected in series with a high-resistance low-pass filter. The effect of the third grounding piece on the low frequency is reduced, and the high frequency performance is improved by the influence of the third grounding piece.
  • the length of the gap between two adjacent grounding strips can be set to fit the transverse mode and the longitudinal mode of the low frequency resonance to facilitate low frequency double harmonics. Vibration.
  • the antenna assembly 14 is disposed in the slot 111. If the grounding plate 13 is disposed as in Fig. 1, the antenna assembly 14 is disposed at the bottom of the lower U-shaped slot.
  • the antenna assembly 14 can have multiple sets.
  • the antenna assembly 14 is coupled between the metal block 11 and the metal frame 12, the antenna assembly 14 including an antenna feed, an antenna unit, and a matching network.
  • the antenna feed is disposed between the metal block 11 and the antenna unit
  • the matching network is disposed between the antenna unit and the metal frame 12.
  • the antenna assembly 14 enables the slot antenna to simultaneously satisfy low frequency requirements such as 824-960 MHz and high frequencies such as 1710-2690 MHz.
  • the slot antenna in the embodiment of the present disclosure has a simple structure, and is directly grounded by providing a grounding piece on both sides, thereby avoiding the signal passing through the grounding point and generating the upper antenna (such as a GPS antenna, a WIFI antenna, and a diversity antenna). Interference, and without complex ground matching, the matching loss is small, and the antenna assembly takes into account the low-frequency and high-frequency resonant modes through at least two sets of matching networks.
  • the slot antenna includes a metal block 21, a metal frame 22, two grounding plates 23, 24, and an antenna assembly, wherein the antenna assembly includes an antenna feed 25 and an antenna unit 26 And a matching network having two groups, a first matching network 27 and a second matching network 28, respectively.
  • more matching networks may be added between the antenna unit 26 and the metal frame 22 for better antenna performance, and more matching networks may be added between the antenna unit 26 and the metal block 21, It only increases the complexity of the slot antenna.
  • the metal block 21 and the metal frame 22 are similar to the metal block 11 and the metal frame 12 in the foregoing embodiments, respectively, and are not described herein again.
  • the metal frame 22 is disposed around the outer periphery of the metal block 21, and a gap 211 is formed between the metal block 21 and the metal block 21.
  • the metal frame 22 is rectangular and has a first side 221, a second side 222, and a third side 223.
  • the first side 221 is opposite to the second side 222
  • the third side 223 is located between the first side 221 and the second side 222 , and specifically may be the bottom side of the metal frame 22 .
  • the grounding lugs 23, 24 are disposed in the slit 211 to ground the metal block 21 and the metal frame 22.
  • the grounding strip 23 is disposed on the first side 221, and the grounding strip 24 is disposed on the second side 222.
  • the two grounding strips 23, 24 divide the slit 211 into two U-shaped slits, and the gap between the two grounding strips 23, 24.
  • the length is just right for the low frequency double resonance mode, including the transverse mode and the longitudinal mode.
  • the distance between the grounding strips 23 and 24 from the third side 223 may be about 50-100 mm.
  • the distance between the grounding strip 23 and the third side 223 may be 90 mm, and the distance between the grounding strip 24 and the third side 223. It is 100mm. of course, The distance can be adjusted according to factors such as the size of the machine, the width of the slit, the medium filled in the gap, and the like.
  • the antenna assembly is disposed in the slot 211, wherein the antenna feed 25 is disposed between the metal block 21 and the antenna unit 26, and the first matching network 27 and the second matching network 28 are both disposed between the antenna unit 26 and the metal frame 22.
  • a suitable antenna unit and a matching network can be designed, and several modes obtained by the simulation can be simultaneously excited, so that the slot antenna simultaneously satisfies the low frequency.
  • a suitable antenna unit and a matching network can be designed, and several modes obtained by the simulation can be simultaneously excited, so that the slot antenna simultaneously satisfies the low frequency.
  • 824-960MHz, high frequency such as 1710-2690MHz demand.
  • the low frequency and high frequency resonance modes generated by the simulation can be known:
  • the 827 MHz mode is lateral excitation, and a suitable first matching network 27 can be designed such that the incoming energy of the antenna feed 25 can reach the metal frame 22 through the first matching network 27 at 827 MHz, while the second matching network 28 is compared at 827 MHz. By blocking the passage of energy, a resonant mode of 827 MHz can be excited.
  • the 957 MHz mode is a longitudinal excitation, and a suitable first matching network 27 is designed such that the incoming energy of the antenna feed 25 can be more evenly distributed to the first matching network 27 and the second matching network 28 at 957 MHz, thereby exciting the metal frame.
  • the resonant mode of 957MHz can be excited.
  • the low frequency of the slot antenna exhibits double resonance, thereby achieving the purpose of expanding the bandwidth.
  • the equivalent value of the first matching network 27 in different frequency bands the first matching network 27 exhibits an equivalent value of a large inductance and a small capacitance at the first resonant frequency of the low frequency band.
  • the equivalent value of the second resonant frequency of the low frequency band is a small inductance and a large capacitance.
  • the various modes of the high frequency can also be simultaneously excited by the appropriate first matching network 27 and the second matching network 28.
  • the third side 223 of the metal frame 22, that is, the 1/4 to 1/2 portion of the bottom side is always the part with the stronger electric field, so the second optimization is performed in this interval.
  • the position and matching value of the matching network 28 is such that the second matching network 28 is connected between the 1/4 and 1/2 portions of the third side 223 to achieve better high frequency performance.
  • the inductive components in the first matching network 27 and the second matching network 28 may be integrated.
  • the capacitive elements may be slot coupled.
  • the first matching network 27 may be composed of an inductive element and a capacitive element as shown in FIG. 4, and the first matching network 27 is connected to the junction of the first side 221 and the third side 223, as shown in FIG.
  • the second matching network 28, as shown in FIG. 5, can be directly simplified to the slot coupling between the antenna unit 26 and the third side 223, and as shown in FIG. 2, the second matching network 28 is connected to the third side 223. Between 1/4 and 1/2 parts.
  • the antenna feed 25 can be moved right and left to achieve better results.
  • the return loss diagram of the slot antenna in the above example can significantly generate double resonance at low frequencies, and the high frequency bandwidth is also good.
  • a third matching network 71 may be connected between the antenna unit 26 and the metal block 21, and the metal frame 22 and the metal block 21 may be connected.
  • a fourth matching network 72 wherein the third matching network 71 can adjust the high frequency bandwidth better, and the fourth matching network 72 can make the antenna unit 26 more flexible.
  • the slot antenna in the embodiment of the present disclosure has a simple structure, and is directly grounded by providing two grounding plates on both sides, thereby avoiding not only the signal passing through the grounding point but also the upper antenna (such as a GPS antenna, a WIFI antenna, and a diversity antenna).
  • the interference occurs, and the antenna component realizes low-frequency double resonance through two sets of matching networks, expands the bandwidth, and realizes the high-frequency resonance mode, which reduces the absorption of signals by the human hand.
  • the U-shaped portion of the metal frame corresponding to the other integrated antennas may have a break point to make other antennas perform better, and the U-shaped portion corresponding to the antenna assembly is continuous without breakpoints; or
  • the metal frame may not be a complete ring frame, and may be a semi-annular frame.
  • the metal frame is continuous without break points.
  • the metal frame is disposed along the outer periphery of the metal block and forms a U-shaped slit with the metal frame.
  • the U-shaped slit An antenna assembly is provided inside. That is, the metal frame is only continuous without a break point near the set position of the antenna assembly.
  • the shape of the antenna unit can be flexible, such as a strip shape, a U shape, an S shape, and the like.
  • Devices such as USB or speakers, microphones, etc. can also be placed in the lower end slot area of the mobile terminal.
  • the embodiment of the present disclosure further discloses a mobile terminal, which includes the slot antenna in the above embodiment.
  • a mobile terminal which includes the slot antenna in the above embodiment.
  • the slot antenna For the specific structure of the slot antenna, refer to the description of the foregoing embodiment, and details are not described herein again.
  • the shapes and structures of the respective members are merely examples and are not limited.
  • the above components may be replaced by other components having the same function, and combined to form more technical solutions, and the technical solutions formed by these replacements are all within the scope of the technical solutions of the present disclosure.

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Abstract

Des modes de réalisation de la présente invention concernent une antenne à fente et un terminal mobile. L'antenne à fente comprend un bloc métallique, un cadre métallique, au moins deux plaques de mise à la masse et au moins un groupe d'ensembles d'antenne. Les ensembles d'antenne comprennent une ligne d'alimentation d'antenne, une unité d'antenne et au moins deux groupes de réseaux d'adaptation. Le cadre métallique est disposé le long de la périphérie du bloc métallique et forme un espacement avec le bloc métallique. Lesdites plaques de mise à la masse sont disposées dans l'espacement afin de permettre au cadre métallique et au bloc métallique d'être reliés à la masse. Lesdites plaques de mise à la masse sont respectivement disposées sur un premier bord latéral et un deuxième bord latéral du cadre métallique, et le premier bord latéral est à l'opposé du deuxième bord latéral. Les ensembles d'antenne sont disposés dans l'espacement. La ligne d'alimentation d'antenne est disposée entre le bloc métallique et l'unité d'antenne. Les réseaux d'adaptation sont disposés entre l'unité d'antenne et le cadre métallique.
PCT/CN2016/080210 2015-04-27 2016-04-26 Antenne à fente et terminal mobile WO2016173485A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510210078.0 2015-04-27
CN201510210078.0A CN105762519B (zh) 2015-04-27 2015-04-27 一种缝隙天线及移动终端

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WO2016173485A1 true WO2016173485A1 (fr) 2016-11-03

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CN111490333A (zh) 2018-11-06 2020-08-04 华为终端有限公司 耦合天线装置及电子设备
CN113097698B (zh) * 2020-01-08 2022-07-19 华为技术有限公司 天线组件和移动终端

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CN103066374A (zh) * 2011-10-24 2013-04-24 联想(北京)有限公司 缝隙结构天线装置和终端设备
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CN104022350A (zh) * 2014-06-12 2014-09-03 电子科技大学 具有金属边框的智能机天线
US8963785B2 (en) * 2012-12-27 2015-02-24 Auden Techno. Corp. Antenna structure for using with a metal frame of a mobile phone

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TWI350027B (en) * 2007-12-31 2011-10-01 Htc Corp Electronic apparatus with hidden antenna
KR101779457B1 (ko) * 2011-04-22 2017-09-19 삼성전자주식회사 휴대용 단말기의 안테나 장치
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CN103066374A (zh) * 2011-10-24 2013-04-24 联想(北京)有限公司 缝隙结构天线装置和终端设备
US8963785B2 (en) * 2012-12-27 2015-02-24 Auden Techno. Corp. Antenna structure for using with a metal frame of a mobile phone
CN103682570A (zh) * 2013-12-16 2014-03-26 联想(北京)有限公司 一种天线及电子设备
CN104022350A (zh) * 2014-06-12 2014-09-03 电子科技大学 具有金属边框的智能机天线

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108736133A (zh) * 2018-07-13 2018-11-02 Oppo广东移动通信有限公司 天线组件以及电子装置

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CN105762519B (zh) 2019-04-12
CN105762519A (zh) 2016-07-13

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