WO2017166356A1 - 终端背盖 - Google Patents

终端背盖 Download PDF

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Publication number
WO2017166356A1
WO2017166356A1 PCT/CN2016/080612 CN2016080612W WO2017166356A1 WO 2017166356 A1 WO2017166356 A1 WO 2017166356A1 CN 2016080612 W CN2016080612 W CN 2016080612W WO 2017166356 A1 WO2017166356 A1 WO 2017166356A1
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WO
WIPO (PCT)
Prior art keywords
back cover
terminal
slot
terminal back
antenna
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PCT/CN2016/080612
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English (en)
French (fr)
Inventor
席萌
李克
Original Assignee
宇龙计算机通信科技(深圳)有限公司
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Publication of WO2017166356A1 publication Critical patent/WO2017166356A1/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
    • H01Q1/36—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
    • H01Q1/12—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
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
    • 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
    • H01Q5/10—Resonant antennas

Definitions

  • the present invention relates to the field of mobile phone terminal back cover technologies, and in particular, to a terminal back cover.
  • the antenna of the mobile phone is designed according to the built-in antenna in the conventional technology, the closedness of the metal casing will cause the antenna of the mobile phone to be easily shielded by the metal casing. Therefore, the antenna of the mobile phone needs to be designed outside the mobile phone, resulting in the use of metal in the conventional technology.
  • the antennas of the outer casing of the mobile phone are often ring-shaped or slot antennas, and are usually in the form of a metal middle frame + plastic back cover to fill the plastic to the breakpoint or the gap.
  • the mobile phone antenna using the metal casing although initially satisfying the antenna requirements of the metal casing of the mobile phone, is very inconvenient in tuning the resonant frequency of the mobile phone antenna, and is subject to an inflexible antenna resonance frequency adjustment (changing the slot size, The grounding point position makes the radiation performance of the mobile phone antenna relatively weak and the bandwidth is limited.
  • the metal slotted or slotted antenna on the back cover of the mobile phone the number of antennas that can be constructed and the volume of the radiator used are limited, which further leads to a relatively weak radiation performance of the mobile phone antenna and limited bandwidth.
  • the architecture of the metal back cover-based mobile phone antenna in the conventional technology has a technical problem that the radiation performance is relatively weak and the bandwidth is limited.
  • a terminal back cover is made of a metal material, and the terminal back cover is provided with a side edge perpendicular to the back cover of the terminal and penetrates the back cover of the terminal on the back surface of the terminal back cover a first slot and a second slot, and the openings of the first slot are respectively located on opposite side edges of the terminal back cover of the second slot, the first slot and the second slot
  • the slot divides the terminal back cover into a radiating portion and a ground portion, and the radiating portion of the terminal back cover is provided with a first feeding point at the opening of the first slot, and the radiating portion of the terminal back cover is a second feeding point is disposed at the opening of the second slot, the grounding portion of the terminal back cover is grounded, and the radiating portion of the terminal back cover and the first feeding point or the second feeding point Form a loop antenna.
  • the first slot and the second slot extend in the same line.
  • the first slot has a length of 38 mm to 50 mm and a width of 2 mm to 5 mm.
  • the second slot has a length of 10 mm to 20 mm and a width of 2 mm to 5 mm.
  • the distance between the first slot or the second slot and the top of the terminal back cover is 5 mm - 15 mm.
  • the edge of the terminal back cover is further provided with an integrally formed side hem extending in a direction perpendicular to the back plane of the terminal back cover, the side hem having a width of 4 mm to 8 mm.
  • the first feed point has a first capacitance in series with the ground, and the capacitance of the first capacitor is between 0.5 pf and 2 pf.
  • an antenna switch is further connected between the radiating portion of the terminal back cover and the ground portion of the terminal back cover, and the antenna switch is a tuning circuit composed of a capacitor and/or an inductor.
  • a mobile terminal includes a main board and a terminal back cover, and a feeding circuit on the main board is connected to a first feeding point and/or a second feeding point on the back cover of the terminal, the main board The grounding is connected to a grounding portion on the back cover of the terminal, and the terminal back cover serves as an antenna of the mobile terminal.
  • the terminal back cover is made of a metal material, and the terminal back cover is provided with a side edge perpendicular to the back cover of the terminal and penetrates the terminal back cover on the back surface of the terminal back cover. a first slot and a second slot, and the opening of the first slot is located at the opening of the second slot.
  • the first slot and the second slot divide the terminal back cover into a radiating portion and a ground portion, and the radiating portion of the terminal back cover is in the first slot a first feeding point is disposed at the opening, the radiating portion of the terminal back cover is provided with a second feeding point at the opening of the second slot, the grounding portion of the terminal back cover is grounded, and
  • the radiating portion of the terminal back cover and the first feed point or the second feed point constitute a loop antenna.
  • the first slot and the second slot extend in the same line.
  • the first slot has a length of 38 mm to 50 mm and a width of 2 mm to 5 mm.
  • the second slot has a length of 10 mm to 20 mm and a width of 2 mm to 5 mm.
  • the distance between the first slot or the second slot and the top of the terminal back cover is 5 mm - 15 mm.
  • the edge of the terminal back cover is further provided with an integrally formed side hem extending in a direction perpendicular to the back plane of the terminal back cover, the side hem having a width of 4 mm to 8 mm.
  • the first feed point has a first capacitance in series with the ground, and the capacitance of the first capacitor is between 0.5 pf and 2 pf.
  • an antenna switch is further connected between the radiating portion of the terminal back cover and the ground portion of the terminal back cover, and the antenna switch is a tuning circuit composed of a capacitor and/or an inductor.
  • the terminal back cover is divided into the upper radiating portion and the lower ground portion by two slots opposite to the left and right sides of the terminal back cover, and are respectively disposed through the setting.
  • the two feeding points at the two slotted openings and the radiating portion and the grounding portion of the terminal back cover constitute two loop antennas, and the two loop antennas share a radiator, that is, the radiating portion of the terminal back cover, and
  • the radiating portion can be used for antenna radiation, so that the radiator of the loop antenna has a larger volume and area than the radiator of the mobile phone antenna in the conventional technology, that is, the bandwidth band that can be covered is wider, and the radiation efficiency is higher.
  • the radiator of the mobile phone antenna is located at the upper end of the back cover of the terminal, and the holding position of the handheld mobile phone of the user is generally located in the middle or the lower half of the terminal, which causes the user to use the terminal back cover and the mobile terminal.
  • the terminal When the terminal is used, it does not cause extra loss of the antenna due to the grip of the hand.
  • the radiation efficiency of the antenna is further increased.
  • FIG. 1 is a schematic view showing an outer surface of a terminal back cover in an embodiment
  • FIG. 2 is a schematic structural view of an outer surface of a terminal back cover in an embodiment
  • 3 is a surface current distribution of a terminal antenna in an operating mode of a low frequency of 900 MHz in one embodiment
  • FIG. 4 is a surface current distribution of a terminal antenna in an operating mode of a high frequency of 1800 MHz in one embodiment
  • 5 is a surface current distribution of a terminal antenna in an operating mode of a high frequency of 2000 MHz in one embodiment
  • 6 is a surface current distribution of a terminal antenna in an operating mode of a high frequency 2500 MHz in one embodiment
  • FIG. 7 is a partial circuit structural diagram of a terminal back cover in an embodiment
  • Figure 8 is a cross-sectional view showing the back cover of the terminal in an embodiment
  • FIG. 9 is a schematic diagram of an S11 parameter (return loss) corresponding to a terminal antenna in a call band mode in an embodiment
  • FIG. 10 is a schematic diagram of an S11 parameter (return loss) corresponding to a terminal antenna in a GPS/WIFI band mode in an embodiment
  • FIG. 11 is a schematic structural diagram of a mobile terminal in an embodiment.
  • a terminal back cover is proposed.
  • the back cover of the terminal may be a mobile phone back cover, a tablet back cover, or the like.
  • the terminal back cover is combined with the front cover of the terminal to serve as the outer casing of the terminal.
  • the back cover of the terminal is made of metal, and also serves as the antenna part of the terminal.
  • the terminal back cover 10 has a rectangular plate-shaped structure and is made of a metal material.
  • the terminal back cover 10 is provided with a side edge perpendicular to the terminal back cover 10 and at the terminal end.
  • the first slot 102 and the second slot 104 of the terminal back cover 10 are penetrated on the back surface of the back cover 10, and the openings of the first slot 102 in the second slot 104 are respectively located at opposite side edges of the terminal back cover 10. on.
  • the rectangular terminal back cover 10 has two long sides. Referring to the orientations in FIG. 2, the left long side and the right long side, it should be noted that the "left" and “right” orientation words herein are only used to distinguish two different long sides of the terminal back cover 10.
  • the actual naming of the long side of the terminal back cover 10 is not limited.
  • a first slot 102 having an opening on the left long side is disposed on the left long side of the terminal back cover 10.
  • the first slot 102 is a linear slot whose extension direction is perpendicular to the left long side.
  • the first slot 102 extends through the terminal back cover 10.
  • the right long side of the terminal back cover 10 is provided with a second slot 104 whose opening is located on the right long side, and the second slot 104 is a linear slot whose extending direction is perpendicular to the right long side. And the second slot 104 extends through the terminal back cover 10.
  • the first slot 102 and the second slot 104 divide the terminal back cover 10 into a radiating portion 106 and a ground portion 108.
  • the radiating portion 106 of the terminal back cover 10 is provided with a first feeding point at the opening of the first slot 102.
  • A, the radiating portion 106 of the terminal back cover 10 is formed by the radiating portion 106 of the second opening 10 and the first feeding point A, and the second loop antenna is composed of the grounding portion 108 of the terminal back cover 10 and the radiating portion 106 of the terminal back cover 10.
  • a second feed point B is composed of the grounding portion 108 of the terminal back cover 10 and the radiating portion 106 of the terminal back cover 10.
  • the second feed point B is disposed at the opening including the first feed point A slot 104, the ground portion 108 of the terminal back cover 10 is grounded, the ground portion 108 of the terminal back cover 10 and the radiating portion 106 of the terminal back cover 10 are
  • the first feed point A or the second feed point B constitutes a loop antenna.
  • the terminal back cover 10 includes two loop antennas: the first loop antenna is provided by the grounding portion 108 of the terminal back cover 10 and the radiating portion 106 of the terminal back cover 10 and the first feed.
  • the point A is constituted by the grounding portion 108 of the terminal back cover 10 and the radiating portion 106 and the second feeding point B of the terminal back cover 10, and, in this embodiment, the first loop antenna and the first Second ring
  • the antennas share a radiator, that is, the radiation portion 106 of the terminal back cover (but the position of the feed point is different), and all of the radiation portions 106 of the terminal back cover at the upper portion of the first slot 102 and the second slot 102 are It can be used for antenna radiation, that is, the radiation area and volume of each loop antenna in this embodiment are greatly increased compared to the size of the antenna radiator in the conventional technology, thereby making the bandwidth wider. Radiation efficiency is higher.
  • the first slot 102 and the second slot 104 may extend in the same straight line. That is, the extension lines of the first slot 102 and the second slot 104 are on the same straight line, and the distance to the top of the terminal back cover 10 is the same.
  • the first slot and the second slot may be formed by cutting at a predetermined distance from the top edge of the complete rectangular back cover. of.
  • the first slot 102 has a length of 38 mm-50 mm and a width of 2 mm-5 mm; the second slot 104 has a length of 10 mm-20 mm and a width of 2 mm-5 mm.
  • the distance between the first slot 102 or the second slot 104 and the top of the terminal back cover 10 is 5 mm - 15 mm. That is to say, the distance between the first slot 102 and the second slot 104 and the top of the terminal back cover 10 is much smaller than the distance from the bottom of the terminal back cover 10, so the grip position of the user when holding the terminal is Grounding portion 108.
  • the terminal back cover 10 is made of a metal material, that is, when the user holds the terminal by the hand, a circuit is formed between the human hand and the terminal, and if the held portion is at the antenna
  • the area where the radiator is located may cause the antenna formation to be affected, that is, the so-called damage; as described above, the distance between the first slot 102 or the second slot 104 and the top of the terminal back cover 10 is 5 mm. -15 mm, since the hand-held terminal is basically held under the terminal (ie, the ground portion in this embodiment), the radiation portion 106 of the terminal antenna is not directly held.
  • FIG. 3 to FIG. 6 respectively show the surface current distribution of the terminal back cover at frequencies of 900 MHz, 1800 MHz, 2000 MHz, and 2500 MHz, that is, the surface currents of the low frequency and the high frequency are mainly distributed in the first
  • the middle and edge portions of the one-loop antenna and the second loop antenna are held under the terminal when the hand-held terminal is held. Therefore, the mobile terminal using the antenna system as described above has relatively small hand loss, and the loss of the right and left hands is relatively balanced.
  • the first feed point A can be used to excite resonances of 700 MHz-1 GHz and 1700 MHz-2700 MHz
  • the second feed point B can be used to excite the resonant frequency of 1576 MHz for GPS and for WIFI 2.4GHz. That is, the first loop antenna including the first feed point A Serving the mobile communication network, the second loop antenna including the second feed point B provides antenna services for GPS and WIFI.
  • the first feeding point A and the ground are connected in series with a first capacitor C0, which may be a variable capacitor, and the capacitance of the first capacitor C0 is 0.5 pf to 2 pf. between.
  • a first capacitor C0 which may be a variable capacitor
  • the capacitance of the first capacitor C0 is 0.5 pf to 2 pf. between.
  • the preferred solution further includes a terminal back cover as shown in FIG. 7, wherein an antenna switch is further connected between the radiating portion 106 of the terminal back cover 10 and the ground portion 108 of the terminal back cover 10.
  • the antenna switch S is a tuning circuit composed of a capacitor C1 and/or an inductor L. That is to say, through the antenna switch S, the access circuit can be either the capacitor C1 or the inductor L, so that the tuning of the resonant frequency of the antenna can be realized by adjusting the capacitance C1 or the inductance L of the access resonant circuit.
  • the edge of the terminal back cover 10 is further provided with an integrally formed side hem extending in a direction perpendicular to the back plane of the terminal back cover 10, and the width of the side hem is 4 mm- 8mm.
  • the side wrapping edge may be a convex portion vertically stretched from the side edge of the terminal back cover by integral molding in the process of producing the terminal back cover of the panel type, or may be backed by the terminal by integral molding.
  • the side edges are formed by curling perpendicular to the raised portions of the terminal back cover 10.
  • the side wrapping can serve as a side wrapping around the front and rear panels of the terminal housing.
  • the mobile terminal includes a main board and a front cover 10 as before, and the feeding circuit on the main board is connected to the first feeding point A and/or the second feeding point B on the terminal back cover 10, and the grounding of the main board It is connected to the grounding portion 108 on the terminal back cover 10, and the terminal back cover 10 serves as an antenna of the mobile terminal.
  • FIG. ** shows an appearance of a mobile terminal using the antenna system as described above.
  • the mobile terminal is made of a front shell steel sheet, a PCB, and the like.
  • the terminal back cover is composed.
  • the terminal back cover is divided into the upper radiating portion and the lower ground portion by two slots opposite to the left and right sides of the terminal back cover, and are respectively disposed through the setting.
  • the two feeding points at the two slotted openings and the radiating portion and the grounding portion of the terminal back cover constitute two loop antennas, and the two loop antennas share a radiator, that is, the radiating portion of the terminal back cover, and
  • the radiating portion can be used for antenna radiation, so that the radiator of the loop antenna has a larger volume and area than the radiator of the mobile phone antenna in the conventional technology, that is, the bandwidth band that can be covered is wider, and the radiation efficiency is higher.
  • the radiator of the mobile phone antenna is located at the upper end of the back cover of the terminal, and the holding position of the handheld mobile phone of the user is generally located in the middle or the lower half of the terminal, which causes the user to use the terminal back cover and the mobile terminal.
  • the extra loss of the antenna is not caused by the grip of the hand, which further increases the radiation efficiency of the antenna.

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

Abstract

本发明实施例公开了一种终端背盖，所述终端背盖为金属材质，所述终端背盖上设置有垂直于所述终端背盖的侧边缘且在所述终端背盖的背面上贯穿所述终端背盖的第一开槽和第二开槽，且所述第一开槽的开口于第二开槽的开口分别位于所述终端背盖的相对的侧边缘上，所述第一开槽和第二开槽将所述终端背盖划分为辐射部和接地部，所述终端背盖的辐射部在所述第一开槽的开口处设置有第一馈电点，所述终端背盖的辐射部在所述第二开槽的开口处设置有第二馈电点，所述终端背盖的接地部接地，与所述终端背盖的辐射部以及所述第一馈电点或第二馈电点构成环天线。本发明中的终端背盖可扩宽天线的带宽。

Description

终端背盖
本申请要求于2016年3月31日提交中国专利局，申请号为201610200654.8、发明名称为“终端背盖”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及手机终端背盖技术领域，尤其涉及一种终端背盖。
背景技术
传统技术中，随着用户对移动终端外观和体验的要求不断提高，手机越来越多地采用金属外壳，并且随着4G网络等网络的普遍覆盖，手机用户体验越来越多的依赖高频天线，也就是说，保证用户体验需要在使用金属外壳的同时提高手机天线的辐射能力和带宽。
若按照传统技术中内置天线的方式设计手机天线，则由于金属外壳的封闭性，将导致手机天线容易被金属外壳所屏蔽，因此，需要将手机天线设计在手机外部，导致传统技术中的使用金属外壳的手机的天线往往都是环形或缝隙天线，并且通常采用金属中框+塑料后盖上走线形式，将塑料填充到断点处或缝隙处。在传统技术中，使用金属外壳的手机天线，虽然初步满足了手机金属外壳对天线的需求，但是在调谐手机天线的谐振频率时非常不便，受制于不够灵活的天线谐振频率调整(改变缝隙尺寸，接地点位置)，使得手机天线的辐射性能相对较弱，带宽有限。并且，在利用手机背盖上的金属开槽或者缝隙架构天线时，所能架构的天线数量和利用的辐射体体积有限，这也进一步地导致了手机天线的辐射性能相对较弱，带宽有限。
因此，传统技术中的基于金属背盖的手机天线的架构存在辐射性能相对较弱，带宽有限的技术问题。
发明内容
基于此，为解决上述提到的传统技术中通过调节接地点进行调谐的手机天线存在的辐射性能相对较弱、带宽有限的技术问题，特提出了一种终端背盖。
一种终端背盖，所述终端背盖为金属材质，所述终端背盖上设置有垂直于所述终端背盖的侧边缘且在所述终端背盖的背面上贯穿所述终端背盖的第一开槽和第二开槽，且所述第一开槽的开口于第二开槽的开口分别位于所述终端背盖的相对的侧边缘上，所述第一开槽和第二开槽将所述终端背盖划分为辐射部和接地部，所述终端背盖的辐射部在所述第一开槽的开口处设置有第一馈电点，所述终端背盖的辐射部在所述第二开槽的开口处设置有第二馈电点，所述终端背盖的接地部接地，与所述终端背盖的辐射部以及所述第一馈电点或第二馈电点构成环天线。
在其中一个实施中，所述第一开槽与所述第二开槽在同一直线上延展。
在其中一个实施中，所述第一开槽的长度为38mm-50mm，宽度为2mm-5mm。
在其中一个实施中，所述第二开槽的长度为10mm-20mm，宽度为2mm-5mm。
在其中一个实施中，所述第一开槽或第二开槽与所述终端背盖的顶部的距离为5mm-15mm。
在其中一个实施中，所述终端背盖的边缘还设置有一体成型的在垂直于所述终端背盖的背平面的方向延展的侧包边，所述侧包边的宽度为4mm-8mm。
在其中一个实施中，所述第一馈电点与接地串联有第一电容，所述第一电容的电容值为0.5pf到2pf之间。
在其中一个实施中，所述终端背盖的辐射部与所述终端背盖的接地部之间还连接有天线开关，所述天线开关为电容和/或电感构成的调谐电路。
此外，为解决上述提到的传统技术中通过调节接地点进行调谐的手机天线存在的辐射性能相对较弱、带宽有限的技术问题，，特提出了一种移动终端。
一种移动终端，所述移动终端包括主板和终端背盖，所述主板上的馈电电路与所述终端背盖上的第一馈电点和/或第二馈电点连接，所述主板的接地与所述终端背盖上的接地部连接，所述终端背盖作为所述移动终端的天线。
在其中一个实施中，所述终端背盖为金属材质，所述终端背盖上设置有垂直于所述终端背盖的侧边缘且在所述终端背盖的背面上贯穿所述终端背盖的第一开槽和第二开槽，且所述第一开槽的开口于第二开槽的开口分别位于所述 终端背盖的相对的侧边缘上，所述第一开槽和第二开槽将所述终端背盖划分为辐射部和接地部，所述终端背盖的辐射部在所述第一开槽的开口处设置有第一馈电点，所述终端背盖的辐射部在所述第二开槽的开口处设置有第二馈电点，所述终端背盖的接地部接地，与所述终端背盖的辐射部以及所述第一馈电点或第二馈电点构成环天线。
在其中一个实施中，所述第一开槽与所述第二开槽在同一直线上延展。
在其中一个实施中，所述第一开槽的长度为38mm-50mm，宽度为2mm-5mm。
在其中一个实施中，所述第二开槽的长度为10mm-20mm，宽度为2mm-5mm。
在其中一个实施中，所述第一开槽或第二开槽与所述终端背盖的顶部的距离为5mm-15mm。
在其中一个实施中，所述终端背盖的边缘还设置有一体成型的在垂直于所述终端背盖的背平面的方向延展的侧包边，所述侧包边的宽度为4mm-8mm。
在其中一个实施中，所述第一馈电点与接地串联有第一电容，所述第一电容的电容值为0.5pf到2pf之间。
在其中一个实施中，所述终端背盖的辐射部与所述终端背盖的接地部之间还连接有天线开关，所述天线开关为电容和/或电感构成的调谐电路。
实施本发明实施例，将具有如下有益效果：
采用了上述终端背盖和移动终端后，通过在终端背盖的左右两侧相对的两个开槽将终端背盖划分称为在上的辐射部以及在下的接地部，并且通过设置分别设置在两个开槽的开口处的两个馈电点与终端背盖的辐射部、接地部构成两个环天线，这两个环天线的共用一个辐射体，即终端背盖的辐射部，并且是辐射部全部可用于天线辐射，从而使得环天线的辐射体相对于传统技术中的手机天线的辐射体的体积以及面积更大，即所能覆盖的带宽频段更宽，辐射的效率更高。
进一步的，因为手机天线的辐射体为位于终端背盖的上端，而用户手持手机的握持部位一般都位于终端的中部或者下半部分，这也就导致了用户在使用上述终端背盖以及移动终端时，并不会因为手部的握持导致天线的额外损耗， 进一步地增加了天线的辐射效率。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
其中：
图1为一个实施例中终端背盖的外表面示意图；
图2为一个实施例中终端背盖的外表面上的结构示意图；
图3为一个实施例中终端天线在低频900MHz的工作模式下的表面电流分布；
图4为一个实施例中终端天线在高频1800MHz的工作模式下的表面电流分布；
图5为一个实施例中终端天线在高频2000MHz的工作模式下的表面电流分布；
图6为一个实施例中终端天线在高频2500MHz的工作模式下的表面电流分布；
图7为一个实施例中终端背盖的部分电路结构示意图；
图8为一个实施例中终端背盖的截面示意图；
图9为一个实施例中终端天线在通话频段模式对应的S11参数(回波损耗)示意图；
图10为一个实施例中终端天线在GPS/WIFI频段模式对应的S11参数(回波损耗)示意图；
图11为一个实施例中一种移动终端的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是 全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
为解决上述提到的传统技术中通过调节接地点进行调谐的手机天线存在的辐射性能相对较弱、带宽有限的技术问题，在一个实施例中，特提出了一种终端背盖。如图1所示，该终端背盖可以是手机背盖、平板电脑背盖等。终端背盖与终端前盖结合，即可作为终端的外壳。同时，该终端背盖为金属材质，同样也作为该终端的天线部分。
在一个实施例中，如图2所示，该终端背盖10为长方形的板型结构，其材质为金属材质，在终端背盖10上设置有垂直于终端背盖10的侧边缘且在终端背盖10的背面上贯穿终端背盖10的第一开槽102和第二开槽104，第一开槽102的开口于第二开槽104的开口分别位于终端背盖10的相对的侧边缘上。
也就是说，如图2中，长方形的终端背盖10有两个长边。参考图2中的方位，为左长边和右长边，需要说明的是，此处的“左”和“右”的方位词限定仅用于区分终端背盖10的两个不同的长边，并没有对终端背盖10的长边的实际命名进行限定。终端背盖10的左长边上设置有开口位于左长边的第一开槽102，第一开槽102为直线型槽，其延展方向与左长边垂直。且第一开槽102贯穿了终端背盖10。同样的，终端背盖10的右长边上设置有开口位于右长边的第二开槽104，第二开槽104为直线型槽，其延展方向与右长边垂直。且第二开槽104贯穿了终端背盖10。
第一开槽102和第二开槽104将终端背盖10划分为辐射部106和接地部108，终端背盖10的辐射部106在第一开槽102的开口处设置有第一馈电点A，终端背盖10的辐射部106在第二开10的辐射部106以及第一馈电点A构成，第二环天线由终端背盖10的接地部108与终端背盖10的辐射部106以及第二馈电点B构成。包含了第一馈电点A槽104的开口处设置有第二馈电点B，终端背盖10的接地部108接地，终端背盖10的接地部108与终端背盖10的辐射部106以及第一馈电点A或第二馈电点B构成环天线。
也就是说，在本实施例中上述终端背盖10中包括了两个环天线：第一环天线由终端背盖10的接地部108与与终端背盖10的辐射部106以及第一馈电点A构成，第二环天线由终端背盖10的接地部108与与终端背盖10的辐射部106以及第二馈电点B构成，并且，在本实施例中，第一环天线和第二环 天线共用一个辐射体，即终端背盖的辐射部106(但馈电点的位置不同)，并且，处于第一开槽102和第二开槽102上部的终端背盖的辐射部106的全部都可以用于天线辐射，也就是说，相较于传统技术中的天线辐射体的大小而言，本实施例中的每个环天线的辐射面积和体积都大大增加了，从而使得带宽更宽，辐射效率更高。
优选的，在一个实施例中，如图2所示，第一开槽102与第二开槽104可在同一直线上延展。也就是说，第一开槽102以及第二开槽104的延展线在同一条直线上，且到终端背盖10的顶部距离相同。
在一个实施例中，在如前所述的终端背盖的生产过程中，上述第一开槽和第二开槽的形成可以是在完整的长方形背盖的离顶部边缘预设距离的切割形成的。
优选的，第一开槽102的长度为38mm-50mm，宽度为2mm-5mm；第二开槽104的长度为10mm-20mm，宽度为2mm-5mm。第一开槽102或第二开槽104与终端背盖10的顶部的距离为5mm-15mm。也就是说，第一开槽102以及第二开槽104与终端背盖10的顶部的距离远远小于其与终端背盖10的底部的距离，因此用户握持上述终端时的握持部位在接地部108。
在本实施例中，因为终端背盖10是金属材质的，也就是说，在用户用手部去握持该终端时，会在人手和终端之间形成电路，若握持的部分在天线的辐射体所在的区域，则会导致天线形成收到影响，即通常所说的受损；如前所述，第一开槽102或第二开槽104与终端背盖10的顶部的距离为5mm-15mm，由于手持终端基本是握持在终端的下方(即本实施例中的接地部)，并没有直接握持在终端天线的辐射部106。
具体的，如图3-6所示，图3至6分别展示了终端背盖在900MHz、1800MHz、2000MHz、2500MHz的频率下的表面电流分布，即低频和高频的表面电流都主要分布在第一环天线以及第二环天线的中间和边缘部位，由于手持终端时是握持在终端的下方，故使用如前所述的天线系统的移动终端的手损相对较小，且左右手的损耗相对均衡。
进一步地，在本实施例中，第一馈电点A可用于激发700MHz-1GHz以及1700MHz-2700MHz的谐振，第二馈电点B可用于激发的谐振频率为用于GPS的1576MHz以及用于WIFI的2.4GHz。即包含了第一馈电点A的第一环天线 为移动通讯网络提供服务，包含了第二馈电点B的第二环天线为GPS以及WIFI提供天线服务。
优选的，在一个实施例中，如图7所示，第一馈电点A与接地串联有第一电容C0，该电容可为可变电容，第一电容C0的电容值为0.5pf到2pf之间。通过增加一个可变电容C0使第一环天线可覆盖的频段范围更宽，并且，上述第一电容C0为可变电容，电容值可以调整，因此可以通过对第一电容C0的电容值调整实现对第一环天线的调谐。也就是说，在需要对移动通信网络的天线进行调谐时，只需要对第一电容C0的电容值进行调节即可。
进一步地，在本实施例中，优选的方案还包括如图7所示的终端背盖，其中：终端背盖10的辐射部106与终端背盖10的接地部108之间还连接有天线开关S，天线开关S为电容C1和/或电感L构成的调谐电路。也就是说，通过天线开关S使得接入电路的为可以是电容C1，也可以是电感L，从而通过调整接入谐振电路的电容C1或电感L实现对天线的谐振频率的调谐。
在一个实施例中，如图8所示，终端背盖10的边缘还设置有一体成型的在垂直于终端背盖10的背平面的方向延展的侧包边，侧包边的宽度为4mm-8mm。该侧包边可以是在生产板型的终端背盖的过程中，通过一体成型的方式由终端背盖的侧边缘垂直拉伸的凸起部，也可以是通过一体成型的方式由终端背盖的侧边缘经过卷曲形成的垂直于终端背盖10的凸起部。该侧包边即可作为终端外壳的前面板和后面板之间的侧面环绕部分。
此外，为解决上述提到的传统技术中通过调节接地点进行调谐的手机天线存在的辐射性能相对较弱、带宽有限的技术问题，还提出了一种移动终端。
具体的，上述移动终端包括主板和如前的终端背盖10，主板上的馈电电路与终端背盖10上的第一馈电点A和/或第二馈电点B连接，主板的接地与终端背盖10上的接地部108连接，终端背盖10作为移动终端的天线。
在一个实施例中，如图**所示，图**展示了一种使用如前所述的天线系统的移动终端的外观，具体的，上述移动终端由前壳钢片、PCB以及如前所述的终端背盖组成。
实施本发明实施例，将具有如下有益效果：
采用了上述终端背盖和移动终端后，通过在终端背盖的左右两侧相对的两个开槽将终端背盖划分称为在上的辐射部以及在下的接地部，并且通过设置分别设置在两个开槽的开口处的两个馈电点与终端背盖的辐射部、接地部构成两个环天线，这两个环天线的共用一个辐射体，即终端背盖的辐射部，并且是辐射部全部可用于天线辐射，从而使得环天线的辐射体相对于传统技术中的手机天线的辐射体的体积以及面积更大，即所能覆盖的带宽频段更宽，辐射的效率更高。
进一步的，因为手机天线的辐射体为位于终端背盖的上端，而用户手持手机的握持部位一般都位于终端的中部或者下半部分，这也就导致了用户在使用上述终端背盖以及移动终端时，并不会因为手部的握持导致天线的额外损耗，进一步地增加了天线的辐射效率。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims (17)

  1. 一种终端背盖，其特征在于，所述终端背盖为金属材质，所述终端背盖上设置有垂直于所述终端背盖的侧边缘且在所述终端背盖的背面上贯穿所述终端背盖的第一开槽和第二开槽，且所述第一开槽的开口于第二开槽的开口分别位于所述终端背盖的相对的侧边缘上，所述第一开槽和第二开槽将所述终端背盖划分为辐射部和接地部，所述终端背盖的辐射部在所述第一开槽的开口处设置有第一馈电点，所述终端背盖的辐射部在所述第二开槽的开口处设置有第二馈电点，所述终端背盖的接地部接地，与所述终端背盖的辐射部以及所述第一馈电点或第二馈电点构成环天线。
  2. 根据权利要求1所述的终端背盖，其特征在于，所述第一开槽与所述第二开槽在同一直线上延展。
  3. 根据权利要求1所述的终端背盖，其特征在于，所述第一开槽的长度为38mm-50mm，宽度为2mm-5mm。
  4. 根据权利要求1所述的终端背盖，其特征在于，所述第二开槽的长度为10mm-20mm，宽度为2mm-5mm。
  5. 根据权利要求1所述的终端背盖，其特征在于，所述第一开槽或第二开槽与所述终端背盖的顶部的距离为5mm-15mm。
  6. 根据权利要求1所述的终端背盖，其特征在于，所述终端背盖的边缘还设置有一体成型的在垂直于所述终端背盖的背平面的方向延展的侧包边，所述侧包边的宽度为4mm-8mm。
  7. 根据权利要求1所述的终端背盖，其特征在于，所述第一馈电点与接地串联有第一电容，所述第一电容的电容值为0.5pf到2pf之间。
  8. 根据权利要求1所述的终端背盖，其特征在于，所述终端背盖的辐射部与所述终端背盖的接地部之间还连接有天线开关，所述天线开关为电容和/或电感构成的调谐电路。
  9. 一种移动终端，其特征在于，所述移动终端包括主板和终端背盖，所述主板上的馈电电路与所述终端背盖上的第一馈电点和/或第二馈电点连接，所述主板的接地与所述终端背盖上的接地部连接，所述终端背盖作为所述移动 终端的天线。
  10. 根据权利要求9所述的移动终端，其特征在于，所述终端背盖为金属材质，所述终端背盖上设置有垂直于所述终端背盖的侧边缘且在所述终端背盖的背面上贯穿所述终端背盖的第一开槽和第二开槽，且所述第一开槽的开口于第二开槽的开口分别位于所述终端背盖的相对的侧边缘上，所述第一开槽和第二开槽将所述终端背盖划分为辐射部和接地部，所述终端背盖的辐射部在所述第一开槽的开口处设置有第一馈电点，所述终端背盖的辐射部在所述第二开槽的开口处设置有第二馈电点，所述终端背盖的接地部接地，与所述终端背盖的辐射部以及所述第一馈电点或第二馈电点构成环天线。
  11. 根据权利要求9所述的移动终端，其特征在于，所述第一开槽与所述第二开槽在同一直线上延展。
  12. 根据权利要求9所述的移动终端，其特征在于，所述第一开槽的长度为38mm-50mm，宽度为2mm-5mm。
  13. 根据权利要求9所述的移动终端，其特征在于，所述第二开槽的长度为10mm-20mm，宽度为2mm-5mm。
  14. 根据权利要求9所述的移动终端，其特征在于，所述第一开槽或第二开槽与所述终端背盖的顶部的距离为5mm-15mm。
  15. 根据权利要求9所述的移动终端，其特征在于，所述终端背盖的边缘还设置有一体成型的在垂直于所述终端背盖的背平面的方向延展的侧包边，所述侧包边的宽度为4mm-8mm。
  16. 根据权利要求9所述的移动终端，其特征在于，所述第一馈电点与接地串联有第一电容，所述第一电容的电容值为0.5pf到2pf之间。
  17. 根据权利要求9所述的移动终端，其特征在于，所述终端背盖的辐射部与所述终端背盖的接地部之间还连接有天线开关，所述天线开关为电容和/或电感构成的调谐电路。
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Publication number Priority date Publication date Assignee Title
CN103700925A (zh) * 2013-12-24 2014-04-02 上海安费诺永亿通讯电子有限公司 一种全金属移动终端双缝天线
CN104505589A (zh) * 2014-12-10 2015-04-08 深圳市信维通信股份有限公司 具有全金属外壳便携式设备的lte载波聚合天线
CN204289695U (zh) * 2014-12-31 2015-04-22 惠州硕贝德无线科技股份有限公司 一种利用手机金属背盖的双环状天线
CN204424456U (zh) * 2015-03-10 2015-06-24 上海艺时网络科技有限公司 金属环槽天线和无线终端

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103700925A (zh) * 2013-12-24 2014-04-02 上海安费诺永亿通讯电子有限公司 一种全金属移动终端双缝天线
CN104505589A (zh) * 2014-12-10 2015-04-08 深圳市信维通信股份有限公司 具有全金属外壳便携式设备的lte载波聚合天线
CN204289695U (zh) * 2014-12-31 2015-04-22 惠州硕贝德无线科技股份有限公司 一种利用手机金属背盖的双环状天线
CN204424456U (zh) * 2015-03-10 2015-06-24 上海艺时网络科技有限公司 金属环槽天线和无线终端

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