WO2020024666A1 - 天线系统及移动终端 - Google Patents

天线系统及移动终端 Download PDF

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Publication number
WO2020024666A1
WO2020024666A1 PCT/CN2019/087722 CN2019087722W WO2020024666A1 WO 2020024666 A1 WO2020024666 A1 WO 2020024666A1 CN 2019087722 W CN2019087722 W CN 2019087722W WO 2020024666 A1 WO2020024666 A1 WO 2020024666A1
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WO
WIPO (PCT)
Prior art keywords
antenna system
semi
circuit board
printed circuit
end surface
Prior art date
Application number
PCT/CN2019/087722
Other languages
English (en)
French (fr)
Inventor
陈苑洁
黄源烽
戴有祥
Original Assignee
瑞声声学科技(深圳)有限公司
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Publication of WO2020024666A1 publication Critical patent/WO2020024666A1/zh

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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
    • 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
    • H01Q1/12—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
    • 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
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • H01Q5/364—Creating multiple current paths
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers

Definitions

  • the present invention relates to the field of mobile terminals, and in particular, to an antenna system and a mobile terminal device using the antenna system.
  • this metal back cover is very good for both the designer and the end user experience, but there is a challenge for the antenna engineer because electromagnetic waves cannot penetrate the metal, so a completely closed metal back cover radiates the antenna It is not feasible, which will directly destroy the signal strength of the antenna module and affect the user experience of the mobile terminal.
  • An object of the present invention is to provide a mobile terminal having a dual-band antenna with good radiation performance.
  • the invention provides an antenna system, which is applied to a mobile terminal.
  • the mobile terminal includes a metal casing, a printed circuit board, and a liquid crystal screen component, which are arranged in this order.
  • the antenna system includes a dual-frequency antenna.
  • the metal casing includes An end portion and a first slot adjacent to the end portion, a semi-closed slot is provided on the printed circuit board corresponding to the first slot, and the printed circuit board includes The first portion on the side of the end portion and the second portion on the side of the semi-closed notch away from the end portion, the printed circuit board further includes an upper end surface facing the metal housing and a portion facing the metal housing.
  • the semi-closed notch of the lower end surface of the liquid crystal panel component includes a first side wall connecting the upper end surface and the lower end surface and adjoining the first portion.
  • the upper end surface is provided with a feeding point.
  • a ground point is provided on the end surface, and the feed point and the ground point are both located in the second part;
  • the dual-band antenna includes a main body portion and an extension portion connected to each other.
  • the main body portion includes a first vertical portion inserted in the semi-enclosed slot and parallel to the first side wall. Including a feeding end extending from an end of the first vertical portion near the upper end surface to the second portion and an end of the first vertical portion near the lower end surface toward the second portion An extended grounding end, the feeding end being connected to the feeding point, the grounding end being connected to the grounding point, and the main body part further including an end from the first vertical part close to the lower end surface toward A first horizontal portion extending horizontally of the first portion, the first horizontal portion being located on a plane where the lower end surface is located;
  • the extension portion includes a second vertical portion and a second horizontal portion.
  • the second vertical portion is erected from an end of the first horizontal portion away from the first vertical portion in a direction away from the printed circuit board. Extending straight, and the second vertical portion is located on a plane where the first side wall is located, and the second horizontal portion is closer to the first horizontal portion from an end of the second vertical portion away from the first horizontal portion.
  • the sides extend horizontally.
  • the semi-closed slot is filled with a plastic filler
  • the main body portion is fixed in the plastic filler
  • the plastic filler is an ABS resin or a PC-ABS resin.
  • the antenna system further includes a bracket located on a lower end surface side of the printed circuit board, and the bracket includes an upper surface facing the lower end surface, a lower surface disposed opposite to the upper surface, and connecting the upper surface.
  • a second sidewall of the surface and the lower surface, the second vertical portion is disposed on the second sidewall, and the second horizontal portion is disposed on the lower surface.
  • the first vertical portion is located at an intermediate position of the semi-closed slot.
  • the first horizontal portion is spaced from the ground terminal.
  • the projection of the semi-closed slot in a direction perpendicular to the upper end surface is rectangular, and the length of the semi-closed slot is 14-18 mm and the width is 1.4-1.6 mm.
  • a clearance area is provided on the first portion of the printed circuit board, and an orthographic projection of the second horizontal portion on the printed circuit board is located in the clearance area; There is no electrical conductor in a projection area perpendicular to the upper end surface.
  • the working frequency band of the antenna system is 2400-2500MHz and 5150-5850MHz.
  • the dual-frequency antenna is made of a flexible circuit board.
  • the present invention also provides a mobile terminal including the antenna system according to any one of the above.
  • the mobile terminal including the dual-frequency antenna provided by the present invention adopts the manner in which the dual-frequency antenna is aligned with the plastic groove of the metal casing, thereby solving the problem that the metal casing cannot perform antenna radiation or the radiation signal is weak.
  • a large degree of radiation is achieved, and the dual-frequency antenna works by dual-frequency, so that the antenna covers a wider range, and by extending the antenna structure to the LCD screen, the dual-frequency antenna can better receive signals.
  • the mobile terminal uses ABS resin or PC-ABS resin to fill the plastic groove on the metal case, which enhances the antenna's impact resistance, heat resistance and low temperature resistance.
  • FIG. 1 is a perspective view of a mobile terminal according to the present invention.
  • FIG. 2 is an exploded view of a mobile terminal of the present invention
  • FIG. 3 is a partially enlarged view of A in the exploded view of FIG. 2;
  • FIG. 4 is a sectional view taken along line B-B in the exploded view of FIG. 2;
  • FIG. 5 is a schematic structural diagram of a dual-frequency antenna in a mobile terminal according to the present invention.
  • FIG. 6 is a return loss diagram of a dual-frequency antenna provided by the present invention.
  • FIG. 7 is a simulation measurement efficiency diagram of a 2400-2500MHz frequency band of a dual-band antenna provided by the present invention.
  • FIG. 8 is an analog measurement efficiency graph of a 5150-5850MHz frequency band of a dual-band antenna provided by the present invention.
  • the mobile terminal 1 provided by the present invention includes a metal case 10, a printed circuit board 20, and a liquid crystal screen component 30 disposed in this order.
  • the mobile terminal 1 further includes an antenna system 40.
  • the metal housing 10 includes an end portion 11 and a first slot 12 adjacent to the end portion 11.
  • a semi-closed slot 21 is provided on the printed circuit board 20 at a position corresponding to the first slot 12.
  • the printed circuit board 20 includes a semi-closed slot.
  • the printed circuit board 20 further includes an upper end surface 24 facing the metal housing 10 and a liquid crystal
  • the lower end face 25 of the panel member 30 and the semi-enclosed notch 21 include a first side wall 26 connecting the upper end face 24 and the lower end face 25 and adjoining the first portion 22.
  • the upper end face 24 is provided with a feeding point 241 and the lower end face 25 is provided with The ground point 251, wherein the feeding point 241 and the ground point 251 are both located in the second part 23; wherein the projection of the semi-closed slot 21 in the direction of the vertical upper end face 24 is rectangular, and the length of the semi-closed slot 21 is 14-18 mm
  • the width is 1.4-1.6 mm.
  • the semi-enclosed notch 21 is 16 mm in length and 1.5 mm in width.
  • the antenna system 40 includes a dual-frequency antenna 41 and a bracket 42 on the lower end surface 25 side of the printed circuit board 20; the dual-frequency antenna 41 includes a main body portion 43 and an extension portion 44 connected to each other; the main body portion 43 includes a semi-closed slot inserted therein
  • the first vertical portion 431 in 21 and parallel to the first side wall 26 and the first horizontal portion 432 extending horizontally from the end of the first vertical portion 431 near the lower end surface 25 to the first portion 22 are located at The plane on which the lower end surface 25 is located; wherein the main body portion 43 further includes a feeding end 431 a extending from an end of the first vertical portion 431 close to the upper end surface 24 to the second portion 23 and a lower end 25 near the first vertical portion 431.
  • a ground terminal 431b extending from one end to the second portion 23, a feeding terminal 431a connected to the feeding point 241, a ground terminal 431b connected to the ground point 251, and the first horizontal portion 432 and the ground terminal 431b are spaced apart; in this embodiment,
  • the semi-closed slot 21 is filled with a plastic filler.
  • the plastic filler is ABS resin or PC-ABS resin.
  • the main body portion 43 is fixed in the plastic filler.
  • the first vertical portion 431 is located in the middle of the semi-closed slot 21. The position is preferably located at the center of the semi-closed slot 21.
  • the extending portion 44 includes a second vertical portion 441 and a second horizontal portion 442.
  • the second vertical portion 441 extends vertically from an end of the first horizontal portion 432 away from the first vertical portion 431 in a direction away from the printed circuit board 20.
  • the second vertical portion 441 is located on the plane where the first side wall 26 is located.
  • the second horizontal portion 442 extends horizontally from the end of the second vertical portion 441 away from the first horizontal portion 432 toward the side closer to the first portion 22.
  • the operating frequency band of the antenna system 40 is 2400-2500MHz and 5150-5850MHz.
  • the bracket 42 includes an upper surface 421 facing the lower end surface 25, a lower surface 422 disposed opposite the upper surface 421, and a second sidewall 423 connecting the upper surface 421 and the lower surface 422.
  • the second vertical portion 441 is disposed on the second sidewall. 423.
  • the second horizontal portion 442 is disposed on the lower surface 422.
  • a clearance area 27 is provided on the first portion 22 of the printed circuit board 20, and an orthographic projection of the second horizontal portion 442 on the printed circuit board 20 is located within the clearance area 27; the semi-closed notch 21 is along the vertical upper end There is no conductive body in the projection area of 24; the length of the clearance area 27 in a direction parallel to the semi-closed slot 21 is 5-9 mm, and preferably, the length of the clearance area 27 in a direction parallel to the semi-closed slot 21 is 7 mm.
  • the mobile terminal including the dual-frequency antenna provided by the present invention adopts a manner in which the dual-frequency antenna is aligned with the plastic groove of the metal casing, which solves the problem that the metal casing cannot perform antenna radiation or the radiation signal is weak, and achieves a greater degree of Radiation, and the dual-frequency antenna works by dual-frequency, so that the antenna covers a wider range, and by extending the antenna structure to the LCD screen, the dual-frequency antenna can better receive signals.
  • the mobile terminal uses ABS resin or PC-ABS resin to fill the plastic groove on the metal case, which enhances the antenna's impact resistance, heat resistance and low temperature resistance.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Support Of Aerials (AREA)
  • Telephone Set Structure (AREA)
  • Waveguide Aerials (AREA)

Abstract

本发明提供了一种天线系统，其包括双频天线；本发明还提供了一种包括所述天线系统的移动终端，其包括依次设置的金属壳体、印刷电路板和液晶屏部件；所述金属壳体包括一端部以及邻近所述端部的第一槽口，所述印刷电路板上对应所述第一槽口的位置设有半封闭槽口，所述双频天线设置于所述半封闭槽口，所述双频天线通过塑料填充物固定于半封闭槽口并金属壳体的第一槽口对齐，解决了金属壳体不能进行天线辐射或辐射信号较弱的问题，实现了较大程度的辐射，所述塑料填充物包括ABS树脂或PC-ABS树脂，增强了天线的抗冲击性、耐热性和耐低温性。

Description

天线系统及移动终端 【技术领域】
本发明涉及移动终端领域，具体涉及一种天线系统及采用该天线系统的移动终端设备。
【背景技术】
当前，随着移动终端智能化的普及，消费者对各种移动终端的外观美观性要求越来越高，金属以其美观耐磨，并具优质的光泽和手感而日益受到消费者的认可，移动终端的外观设计已经从便宜的塑性材料体逐渐升级到全金属体。
这种金属后盖的外观设计，对于设计师和终端用户体验都非常好，但是对于天线工程师而言却存在着一个挑战，因为电磁波无法穿透金属，因此一个完全封闭的金属后盖对于天线辐射是不可行的，将直接破坏天线模组的信号强度，影响移动终端用户的使用体验。
因此，有必要提供一种天线辐射性能好的移动终端以解决上述问题。
【发明内容】
本发明的目的在于提供一种具有辐射性能好的双频天线的移动终端。
本发明提供了一种天线系统，其应用于移动终端，所述移动终端包括依次设置的金属壳体、印刷电路板和液晶屏部件，所述天线系统包括双频天线，所述金属壳体包括一端部以及邻近所述端部的第一槽口，所述印刷电路板上对应所述第一槽口的位置设有半封闭槽口，所述印刷电路板包括位于所述半封闭槽口靠近所述端部一侧的第一部和位于所述半封闭槽口远离所述端部一侧的第二部，所述印刷电路板还包括朝向所述金属壳体的上端面和朝向所述液晶屏部件的下端面，所述半封闭槽口包括连接所述上端面和所述下端面且邻接所述第一部的第一侧壁，所述上端面设置有馈电点，所述下端面设置有接地点，所述馈电点和所述接地点均位于所述第二部；
所述双频天线包括相互连接的主体部和延伸部，所述主体部包括插设 于所述半封闭槽口内并平行于所述第一侧壁的第一竖直部，所述主体部还包括自所述第一竖直部靠近所述上端面的一端向所述第二部延伸出的馈电端以及自所述第一竖直部靠近所述下端面的一端向所述第二部延伸出的接地端，所述馈电端连接所述馈电点，所述接地端连接所述接地点，所述主体部还包括自所述第一竖直部靠近所述下端面的一端向所述第一部水平延伸的第一水平部，所述第一水平部位于所述下端面所在平面；
所述延伸部包括第二竖直部和第二水平部，所述第二竖直部自所述第一水平部远离所述第一竖直部的一端向远离所述印刷电路板的方向竖直延伸，且所述第二竖直部位于所述第一侧壁所在平面，所述第二水平部自所述第二竖直部远离所述第一水平部的一端向靠近所述第一部一侧水平延伸。
优选的，所述半封闭槽口中填充有塑料填充物，所述主体部固定于所述塑料填充物中，所述塑料填充物为ABS树脂或PC-ABS树脂。
优选的，所述天线系统还包括位于所述印刷电路板下端面一侧的支架，所述支架包括朝向所述下端面的上表面、与所述上表面相对设置的下表面以及连接所述上表面和所述下表面的第二侧壁，所述第二竖直部设置于所述第二侧壁，所述第二水平部设置于所述下表面。
优选的，所述第一竖直部位于所述半封闭槽口的中间位置。
优选的，所述第一水平部与所述接地端间隔设置。
优选的，所述半封闭槽口沿垂直所述上端面方向的投影呈矩形，所述半封闭槽口长为14-18mm、宽为1.4-1.6mm。
优选的，所述印刷电路板的所述第一部上设置有净空区域，所述第二水平部在所述印刷电路板上的正投影位于所述净空区域内；所述半封闭槽口沿垂直所述上端面的投影区域内无导电体。
优选的，所述天线系统的工作频带为2400-2500MHz和5150-5850MHz。
优选的，所述双频天线由柔性电路板制成。
本发明还提供了一种移动终端，其包括如以上任一项所述的天线系统。
与相关技术相比，本发明提供的包含了双频天线的移动终端采用了双频天线与金属壳体塑料槽对齐的方式，解决了金属壳体不能进行天线辐射或辐射信号较弱的问题，实现了较大程度的辐射，且该双频天线通过双频工作，使得天线覆盖的范围更广，并且通过将天线结构延伸到液晶屏使得双频天线能够更好的接收信号。该移动终端采用ABS树脂或PC-ABS树脂填充金属壳体上的塑料槽，增强了天线的抗冲击性、耐热性和耐低温性。
【附图说明】
图1是本发明的移动终端的立体图；
图2是本发明的移动终端的分解图；
图3是图2分解图中A的局部放大图；
图4是图2分解图中沿B-B线的截面图；
图5是本发明移动终端中双频天线结构示意图；
图6是本发明提供的双频天线的回波损耗图；
图7是本发明提供的双频天线的2400-2500MHz频段模拟测量效率图；
图8是本发明提供的双频天线的5150-5850MHz频段模拟测量效率图。
【具体实施方式】
下面结合图1至图8对本发明作详细描述。
如图1-图5所示，本发明提供的移动终端1，其包括依次设置的金属壳体10、印刷电路板20和液晶屏部件30，移动终端1还包括天线系统40。
金属壳体10包括一端部11以及邻近端部11的第一槽口12，印刷电路板20上对应第一槽口12的位置设有半封闭槽口21，印刷电路板20包括位于半封闭槽口21靠近端部11一侧的第一部22和位于半封闭槽口21远离端部11一侧的第二部23，印刷电路板20还包括朝向金属壳体10的上端面24和朝向液晶屏部件30的下端面25，半封闭槽口21包括连接上端面24和下端面25且邻接第一部22的第一侧壁26，上端面24设置有馈电点241，下端面25设置有接地点251，其中，馈电点241和接地点251均位于第二部23；其中，半封闭槽口21沿垂直上端面24方向的投影呈矩形，该半封闭槽口21长为14-18mm、宽为1.4-1.6mm，优选地，半封闭槽 口21长为16mm、宽为1.5mm。
天线系统40包括双频天线41以及位于印刷电路板20下端面25一侧的支架42；双频天线41包括相互连接的主体部43和延伸部44；主体部43包括插设于半封闭槽口21内并平行于第一侧壁26的第一竖直部431和自第一竖直部431靠近下端面25一端向第一部22水平延伸的第一水平部432，第一水平部432位于下端面25所在平面；其中，主体部43还包括自第一竖直部431靠近上端面24的一端向第二部23延伸出的馈电端431a以及自第一竖直部431靠近下端面25的一端向第二部23延伸出的接地端431b，馈电端431a连接馈电点241，接地端431b连接接地点251，第一水平部432与接地端431b间隔设置；在本实施例中，半封闭槽口21中填充有塑料填充物，塑料填充物为ABS树脂或PC-ABS树脂，主体部43固定于塑料填充物中，此外，第一竖直部431位于半封闭槽口21的中间位置，优选的位于半封闭槽口21的中心位置。延伸部44包括第二竖直部441和第二水平部442，第二竖直部441自第一水平部432远离第一竖直部431的一端向远离印刷电路板20的方向竖直延伸，且第二竖直部441位于第一侧壁26所在平面，第二水平部442自第二竖直部441远离第一水平部432的一端向靠近第一部22一侧水平延伸。该系天线系统40的工作频带为2400-2500MHz和5150-5850MHz。
支架42包括朝向下端面25的上表面421、与上表面421相对设置的下表面422以及连接上表面421和下表面422的第二侧壁423，第二竖直部441设置于第二侧壁423，第二水平部442设置于下表面422。
本实施例中，印刷电路板20的第一部22上设置有净空区域27，第二水平部442在印刷电路板20上的正投影位于净空区域27内；半封闭槽口21沿垂直上端面24的投影区域内无导电体；该净空区域27沿平行于半封闭槽口21方向的长度为5-9mm，优选的，净空区域27沿平行于半封闭槽口21方向的长度为7mm。
通过对移动终端1的天线系统40的回波损耗和效率进行测试，结果如图6-图8所示。从图中可以看出双频天线40在2400-2500MHz频段的效率 大于40％，在5150-5850MHz频段的效率大于35％。
本发明提供的包含了双频天线的移动终端采用了双频天线与金属壳体塑料槽对齐的方式，解决了金属壳体不能进行天线辐射或辐射信号较弱的问题，实现了较大程度的辐射，且该双频天线通过双频工作，使得天线覆盖的范围更广，并且通过将天线结构延伸到液晶屏使得双频天线能够更好的接收信号。该移动终端采用ABS树脂或PC-ABS树脂填充金属壳体上的塑料槽，增强了天线的抗冲击性、耐热性和耐低温性。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (10)

  1. 一种天线系统，其应用于移动终端，所述移动终端包括依次设置的金属壳体、印刷电路板和液晶屏部件，其特征在于:所述天线系统包括双频天线，所述金属壳体包括一端部以及邻近所述端部的第一槽口，所述印刷电路板上对应所述第一槽口的位置设有半封闭槽口，所述印刷电路板包括位于所述半封闭槽口靠近所述端部一侧的第一部和位于所述半封闭槽口远离所述端部一侧的第二部，所述印刷电路板还包括朝向所述金属壳体的上端面和朝向所述液晶屏部件的下端面，所述半封闭槽口包括连接所述上端面和所述下端面且邻接所述第一部的第一侧壁，所述上端面设置有馈电点，所述下端面设置有接地点，所述馈电点和所述接地点均位于所述第二部；
    所述双频天线包括相互连接的主体部和延伸部，所述主体部包括插设于所述半封闭槽口内并平行于所述第一侧壁的第一竖直部，所述主体部还包括自所述第一竖直部靠近所述上端面的一端向所述第二部延伸出的馈电端以及自所述第一竖直部靠近所述下端面的一端向所述第二部延伸出的接地端，所述馈电端连接所述馈电点，所述接地端连接所述接地点，所述主体部还包括自所述第一竖直部靠近所述下端面的一端向所述第一部水平延伸的第一水平部，所述第一水平部位于所述下端面所在平面；
    所述延伸部包括第二竖直部和第二水平部，所述第二竖直部自所述第一水平部远离所述第一竖直部的一端向远离所述印刷电路板的方向竖直延伸，且所述第二竖直部位于所述第一侧壁所在平面，所述第二水平部自所述第二竖直部远离所述第一水平部的一端向靠近所述第一部一侧水平延伸。
  2. 根据权利要求1所述的天线系统，其特征在于：所述半封闭槽口中填充有塑料填充物，所述主体部固定于所述塑料填充物中，所述塑料填充物为ABS树脂或PC-ABS树脂。
  3. 根据权利要求1所述的天线系统，其特征在于：所述天线系统还包括位于所述印刷电路板下端面一侧的支架，所述支架包括朝向所述下端面 的上表面、与所述上表面相对设置的下表面以及连接所述上表面和所述下表面的第二侧壁，所述第二竖直部设置于所述第二侧壁，所述第二水平部设置于所述下表面。
  4. 根据权利要求1所述的天线系统，其特征在于：所述第一竖直部位于所述半封闭槽口的中间位置。
  5. 根据权利要求1所述的天线系统，其特征在于：所述第一水平部与所述接地端间隔设置。
  6. 根据权利要求1所述的天线系统，其特征在于：所述半封闭槽口沿垂直所述上端面方向的投影呈矩形，所述半封闭槽口长为14-18mm、宽为1.4-1.6mm。
  7. 根据权利要求1所述的天线系统，其特征在于：所述印刷电路板的所述第一部上设置有净空区域，所述第二水平部在所述印刷电路板上的正投影位于所述净空区域内；所述半封闭槽口沿垂直所述上端面的投影区域内无导电体。
  8. 根据权利要求6所述的天线系统，其特征在于：所述天线系统的工作频带为2400-2500MHz和5150-5850MHz。
  9. 根据权利要求1所述的天线系统，其特征在于：所述双频天线由柔性电路板制成。
  10. 一种移动终端，其特征在于：包括如权利要求1-9任意一项所述的天线系统。
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