CN103390793A - Mobile terminal using metal frame antenna - Google Patents

Mobile terminal using metal frame antenna Download PDF

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Publication number
CN103390793A
CN103390793A CN2013103224989A CN201310322498A CN103390793A CN 103390793 A CN103390793 A CN 103390793A CN 2013103224989 A CN2013103224989 A CN 2013103224989A CN 201310322498 A CN201310322498 A CN 201310322498A CN 103390793 A CN103390793 A CN 103390793A
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China
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antenna system
mobile terminal
antenna
metal frame
radiating element
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CN2013103224989A
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Chinese (zh)
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李文斌
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苏州维特比信息技术有限公司
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Priority to CN2013103224989A priority Critical patent/CN103390793A/en
Publication of CN103390793A publication Critical patent/CN103390793A/en

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Abstract

The invention discloses an antenna system formed by a metal casing of a mobile terminal, which is applicable to the field of mobile terminals. The metal frame of the mobile casing is divided into three zones, which are used as a main antenna system, a diversity antenna system and a GPS antenna system of the mobile terminal respectively and are separated from one another through groove zones; the main antenna system comprises a radiation unit, a coupling unit, a power supply excitation unit, and an earth point; the diversity antenna system and the GPS antenna system comprise radiation units, power supply excitation units and earth points; the radiation unit of each antenna system comprises a section of metal frame with a certain length.

Description

一种使用金属框天线的移动终端 A method of using the metal frame of the mobile terminal antenna

技术领域 FIELD

[0001] 本发明涉及移动终端技术领域。 [0001] The present invention relates to the field of mobile terminals. 具体地来说,涉及一种利用移动终端的金属外框构建天线系统,以及使用该技术方案的移动终端。 Particularly, it relates to a mobile terminal using a metal frame construction of the mobile terminal antenna system, and using the technical solution.

背景技术 Background technique

[0002] 传统的移动终端一般采用塑料作为机身外壳,而现在出现了手机外壳金属化的设计趋势。 [0002] The conventional mobile terminal generally used as a plastic housing body, and now design trends emerged metallization cell phone case. 采用金属外壳有助于提升移动终端的质感和观赏性,但也给移动终端的天线设计带来了挑战。 Metal casing help to improve the texture and ornamental mobile terminals, but also a challenge to the mobile terminal antenna design. 其一,是金属外壳对无线信号有屏蔽作用,空中传输的无线信号被金属外壳所反射或者折射,不能按照预期的方式被天线所接收;其二,金属本身是导体,移动终端中不同天线上的无线电信号经过金属外壳传导形成相互串扰。 First, the metal shell shielding effect of the wireless signal, the wireless signal transmitted over the air are reflected or refracted metal casing, the antenna can not be received as expected; Second, the metal itself is a conductor, on different antennas in the mobile terminal the radio signal through a metal conducting enclosure formed crosstalk.

[0003] 通过拆解现有金属外壳的移动终端以及文献检索,我们发现,为解决上述困难现有的技术常见两种方案,第一种是增加金属外壳与天线系统之间的空间隔离,例如申请号为201020161569的实用新型“一种全金属中框手机的壳体结构”公开了这样的方案,即将金属外壳的天线区域挖空,开设缺口或者填充上塑胶体。 [0003] By dismantling the existing mobile terminals and the metal housing literature search, we found that, in order to solve the above difficulties of the prior art common two options, the first one is to increase the space between the metal housing and the antenna isolation systems, e.g. utility Model application No. "an all-metal frame phone housing structure" 201020161569 discloses such a scheme, i.e. the metal shell hollowed antenna area, defines the gap or filled with the plastic body. 第二种方案是巧妙地直接利用金属边框作为天线,例如申请号为201010569589的发明“边框缝隙天线”公开了一种利用金属边框、缝隙以及阻抗匹配电路构成并联或者串联的环形电路天线。 The second scheme is skillfully using a metal frame as an antenna directly, for example, Application No. 201010569589 of the invention "frame slot antenna" discloses a method using a metal frame, slot and an impedance matching circuit of the antenna circuit loop in parallel or in series. 但该方案要求较多的电容、电感等无源器件来构成环形电路,并且匹配电路的结构复杂。 However, the scheme requires more capacitors, inductors and other passive components constituted loop circuit, and the matching circuit configuration complicated.

发明内容 SUMMARY

[0004] 综上所述,本发明所要解决的问题与第二类方案类似,S卩如何直接利用移动终端的金属框外壳来组成天线结构,同时避免金属框外壳的其余部分干扰到天线的信号接收或发送。 [0004] In summary, the problem to be solved by the present invention is similar to the second type of program, how S Jie directly to the metal frame of the housing of the mobile terminal consisting of an antenna structure, the rest of the metal frame of the housing while avoiding interference signal to the antenna received or transmitted.

[0005] 本发明所采用的技术方案如下: [0005] The technical solutions employed in the present invention is as follows:

[0006] 将移动终端外壳的金属框划分出3个区域,分别作为移动终端的主天线系统、分集天线系统和GPS天线系统的结构组成,优选情况下,这三个区域位于移动终端金属框的三个边角,从而相互间保持有较大的间隔距离,在三个区域之间的金属框上有开槽缺口以相互区隔。 [0006] The mobile terminal metal frame housing divided into 3 regions, as the primary system of a mobile terminal antenna, a diversity antenna system and the GPS antenna system structures, Preferably, the mobile terminal is located in the three areas of the metal frame three corners, thereby maintaining a greater mutual distance, slotted segments to each other in the gap between the metal frame on three areas.

[0007] 所述的主天线系统包括辐射单元、耦合单元、供电激励单元和接地点; [0007] The main antenna system includes a radiating unit, a coupling unit, excitation power supply unit and a ground point;

[0008] 所述的分集天线系统包括辐射单元、供电激励单元和接地点; [0008] The diversity antenna system comprising a radiating element, the excitation power supply unit and a ground point;

[0009] 所述的GPS天线系统包括辐射单元、供电激励单元和接地点。 [0009] The system includes a GPS antenna radiating element, the power supply unit and the ground excitation.

[0010] 进一步地,上述三个天线系统的供电激励均来自于移动终端的PCB板供电,接地点均连接到PCB板的接地。 [0010] Further, the power supply system of exciting the three antennas are powered from the PCB of the mobile terminal, grounding point connected to the grounding of the PCB. 更进一步地,金属外壳上非上述天线系统的金属框区域也连接到PCB板的接地,从而防止其对天线系统的干扰。 Still further, the metal shell non-metal frame region of the antenna system is also connected to the ground of the PCB, so as to prevent its interference with the antenna system.

[0011] 上述三个天线系统的辐射单元均利用移动终端的金属框实现,每个辐射单元所占用的金属框长度是金属框上的开槽缺口之间的距离,进一步地,该长度一般设计为移动终端所工作频段的四分之一到二分之一的工作波长。 [0011] The antenna system of the three radiating elements are implemented using a mobile terminal metal frame, each radiating element occupied by a metal frame length is the distance between the notch on the grooved metal frame, and further, the length is generally designed operating wavelength quarter to one-half of the frequency band for the mobile terminal work. 主天线系统还包括耦合单元。 The system further comprises a main antenna coupling unit. [0012] 在主天线系统与移动终端的PCB板前端之间保留有一块净空区域,其宽度在十分之一工作波长以上。 [0012] PCB remains between the front end of the main antenna system and the mobile terminal plate has a clearance area having a width at least one out of the operating wavelength.

[0013] 本发明的有益效果是:利用移动终端的金属框外壳作为天线系统,节省了额外的硬件开销,同时为移动终端内部预留出更多的空间。 [0013] Advantageous effects of the present invention are: the use of a metal frame of the housing of the mobile terminal antenna system, saves additional hardware overhead, more space is reserved inside the mobile terminal. 此外相比于201010569589号专利,本发明避免了使用复杂的匹配电路和更多无源器件,本发明通过恰当的布局设计能达到较好的射频性能。 Patent No. 201 010 569 589 compared to the addition, the present invention avoids the use of more complex matching circuit and passive components, the present invention through appropriate layout design can achieve better RF performance.

附图说明 BRIEF DESCRIPTION

[0014] 图1是本发明所提供的移动终端天线系统的整体示意图 [0014] FIG. 1 is an overall schematic view of a mobile terminal antenna system according to the present invention provides

[0015] 图2是主天线系统的示意图 [0015] FIG. 2 is a schematic diagram of the main antenna system

[0016] 图3是分集天线系统和GPS天线系统的示意图 [0016] FIG. 3 is a schematic diagram of diversity antenna system and the GPS antenna system

具体实施方式 Detailed ways

[0017] 需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。 [0017] Incidentally, in the case of no conflict, embodiments and features of the present embodiments herein may be combined with each other. 下面将参考附图并结合实施例来详细说明本发明。 Below with reference to accompanying drawings and embodiments of the present invention will be described in detail.

[0018] 实施例一 [0018] Example a

[0019] 本实施例适用于带有金属框外壳的LTE无线终端,其工作频段为LTE常见的 [0019] This embodiment is applicable to an LTE wireless terminal housing having a metal frame, which is a common working frequency band for the LTE

2.3GHz,主天线带宽要求一般为200MHz,分集天线带宽的要求一般为50MHz,GPS天线的工作频段为1.5GHz,带宽要求一般为20MHz。 2.3GHz, main antenna bandwidth requirement is generally 200MHz, diversity antenna bandwidth requirements typically 50MHz, GPS antenna operating band of 1.5GHz, bandwidth requirements is typically 20MHz.

[0020] 如图1所示为本实施例移动终端金属外框的结构示意图,四周的金属外框分为天线部分和非天线部分,不同部分之间通过开槽缺口来区隔,图中标示为D1-D5即标示了5个开槽,分别位于终端的左右侧和顶部,其将外框分成5个部分:D1-D2间是主天线系统,D3-D4间是分集天线系统,D4-D5间是GPS天线系统;D2_D3间,D5-D1间是金属边框的其余部分。 [0020] The embodiment shown in Figure 1 a schematic view of the structure of the metal frame of the mobile terminal of the present embodiment, the metal frame around the antenna portion and the non-divided part of the antenna, between the different parts by a slot gap to segment, denoted in FIG. marked D1-D5 is five slot, which are located left and right sides and the top terminal, the frame is divided into five parts: D1-D2 between the main antenna system, inter-D3-D4 is a diversity antenna system, D4- D5 is between the GPS antenna system; Room D2_D3, inter D5-D1 is the remainder of the metal frame.

[0021] 主天线系统位于终端顶部的边角,分集天线系统和卫星导航系统位于侧边的两个边角上,如此可以最大限度的利用终端的尺寸,保持三个天线系统间相互隔离。 [0021] The main antenna system is located at the top corner of the terminal, located on the side of the diversity antenna system and two corners of a satellite navigation system, so can maximize the size of the terminal using, maintaining isolation between the three antenna system.

[0022] 非天线部分的金属框与PCB板的地线连接以降低金属对天线系统韵影响。 [0022] Non-ground portion of the antenna is connected to the metal frame and the PCB to reduce the effect of metal on the antenna system rhyme. 连接点位置在非天线部分金属框的两个端口靠近开槽缝隙处,如图中T1-T4标示。 Two ports connected to the non-center position of the metal frame near the slot antenna portion of the slot, denoted T1-T4 in FIG.

[0023] 图2是主天线系统示意图,包括辐射单元1、耦合单元2、供电激励单元3和接地点 [0023] FIG. 2 is a front schematic view of the antenna system, comprising a radiating element, a coupling unit 2, the power supply unit 3 and the ground excitation

4。 4. 供电激励来自于移动终端的PCB板供电,接地点连接到PCB板的接地。 PCB board power supply of the excitation from the mobile terminal, grounding point connected to the ground of the PCB. 辐射单元由一段金属框构成,通过供电激励单元以及接地点与PCB板相连,辐射单元的长度由两端的开槽缺口位置决定,其取值为工作频段的四分之一到二分之一波长,在本实施例中工作频段是 Radiating element is constituted by a metal frame period, is connected via the power supply unit and the excitation ground point to the PCB, the length of the radiating element is determined by the position of both ends of the slot cutout, whose value is one-quarter to one-half wavelength of the operating band , in the embodiment of the present embodiment is operating band

2.3GHz,因此其长度大致为32_到65_。 2.3GHz, and therefore substantially the length of 32_ to 65_. 耦合单元2的作用是去除谐波,可采用常用的耦合电容来实现,耦合单元的接地同样连接到PCB板的接地点。 Action coupling unit 2 is to remove harmonics, can be used to achieve the coupling capacitor, the ground coupling unit is likewise connected to the PCB ground point.

[0024] 为保证主天线系统不与PCB板上电路相互干扰,在主天线和PCB板前端之间保留一块净空区域,其宽度不小于十分之一的工作波长,大致为5_以上。 [0024] The main antenna system does not ensure the mutual interference with the circuit board PCB, retains a clearance area between the main PCB antenna and front end plate, a width of not less than one tenth of the operating wavelength, is substantially more 5_.

[0025] 图3是分集天线系统或GPS天线系统结构示意图,分集天线系统和GPS天线系统置于终端侧边的边角上。 [0025] FIG. 3 is a partial schematic diagram of diversity antenna system or the system configuration of the GPS antenna, a diversity antenna system and the terminal side GPS antenna system is placed in a corner. 分集天线系统包括辐射单元1、供电激励单元2和接地点3 ;GPS天线系统包括辐射单元4、供电激励单元5和接地点6。 Diversity antenna system 1 includes a radiating unit, excitation power supply unit 2 and the ground point 3; GPS antenna system includes a radiation unit 4, the excitation power supply unit 6 and ground 5. 分集天线系统和GPS天线系统给的供电激励均来自于PCB板的供电,接地点均与PCB板接地点连接。 Diversity antenna system and the GPS antenna system to excitation power supply comes from the PCB, the ground point is connected to the PCB ground. 分集天线系统的辐射单元同样由一段金属边框构成,长度为四分之一到二分之一的工作波长,大致为32mm到65mm,并且通过供电激励单元以及接地点与PCB板相连接。 Radiation diversity antenna system unit constituted by the same section of the metal frame, a quarter of the operating wavelength to a length of one-half, approximately 32mm to 65mm, and is connected to the pumping means and the ground point via the power supply to the PCB. GPS天线系统的辐射单元同样由一段金属边框构成,长度为GPS卫星的工作波长的四分之一,大致为45mm。 GPS antenna radiating elements of the same system is constituted by a metal frame section, a length of a quarter of the operating wavelength of the GPS satellites, approximately 45mm.

[0026] 实施例二 [0026] Second Embodiment

[0027] 本实施例适用于带有金属框外壳的UMTS无线终端,其工作频段为UMTS常见的 [0027] This embodiment is applicable to a UMTS radio terminal housing having a metal frame, which is a UMTS operating band common

1.8GHz,主天线带宽要求一般为200MHz,GPS天线的工作频段为1.5GHz,带宽要求一般为20MHz ο 1.8GHz, main antenna bandwidth requirement is generally 200MHz, GPS antenna operating band of 1.5GHz, 20MHz ο bandwidth requirement is generally

[0028] 与实施例所不同之处在于,UMTS无线终端不需要有分集天线系统,主天线系统的福射单元长度大致为42mm到85mm之间。 [0028] The Example except that, UMTS wireless terminal does not need a diversity antenna system, Fu emitting unit length of the main antenna system is substantially between 42mm to 85mm.

[0029] 本发明提供了一种利用移动终端的金属边框构成的天线结构,通过对终端四周金属框开槽和合理的线路设计,实现了主天线、分集天线以及GPS天线系统。 [0029] The present invention provides a mobile terminal using an antenna structure made of a metal frame, the metal frame of the slot, and the terminal four weeks reasonable circuit design, realized by the main antenna, and GPS antenna diversity antenna system. 满足了移动终端外壳金属化的趋势,并且其实现简单,节省了终端内部的空间。 Meet the trend of the mobile terminal metal housing and which is simple and saves space inside the terminal.

[0030] 以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。 [0030] The above description is only preferred embodiments of the present invention, it is not intended to limit the invention to those skilled in the art, the present invention may have various changes and variations. 凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。 Any modification within the spirit and principle of the present invention, made, equivalent substitutions, improvements, etc., should be included within the scope of the present invention.

Claims (10)

1.一种利用移动终端的金属框所构成的天线系统,其特征在于,将移动终端外壳的金属框划分出三个区域,分别作为主天线系统、分集天线系统和GPS天线系统,其中, 所述主天线系统包括辐射单元、耦合单元、供电激励单元和接地点; 所述分集天线系统包括辐射单元、供电激励单元和接地点; 所述GPS天线系统包括辐射单元、供电激励单元和接地点; 所述主天线系统的辐射单元、分集天线系统的辐射单元、GPS天线系统的辐射单元均由一段移动终端的金属框构成。 An antenna system using the metal frame of the mobile terminal configuration, wherein the metal frame of the housing of the mobile terminal three divided regions, respectively, as the main antenna system, the diversity antenna system and the GPS antenna system, wherein the said system comprising a main antenna radiating unit, the coupling unit, the excitation power supply unit and the ground point; said diversity radiating element, the excitation power supply unit and the ground system comprises an antenna; GPS antenna system includes the radiating element, the excitation power supply unit and the ground; the main radiating element radiating element of the antenna system, the diversity radiating element antenna system, GPS antenna section by the metal frame of the system configuration of the mobile terminal.
2.根据权利要求1所述的天线系统,其特征进一步在于, 所述的三个区域位于移动终端金属框的顶端和底端的两个边角上; 并且,所述的三个区域之间以及与非天线区域之间用开槽进行区隔。 2. The antenna system according to claim 1, further characterized in that said three regions located on both the top and bottom corners of the metal frame of the mobile terminal; and, between the three regions and between antenna area and the non-segment by using grooved.
3.根据权利要求1所述的天线系统,其特征进一步在于, 所述主天线系统的辐射单元的长度设计为移动终端工作频段的四分之一到二分之一的工作波长; 所述分集天线系统的辐射单元的长度设计为移动终端工作频段的四分之一到二分之一的工作波长; 所述GPS天线系统的辐射单元的长度设计为GPS卫星的工作波长的四分之一。 The antenna system according to claim 1, further characterized in that the length of the main radiating element design antenna system is operating wavelength quarter to one-half of a mobile terminal operating band; the diversity length of the radiating element of the antenna system is designed to operate to a quarter of the wavelength of one-half of a mobile terminal operating band; the length of the GPS antenna system radiating elements designed to be a quarter of the operating wavelength of the GPS satellites.
4.根据权利要求1或2或3所述的天线系统,其特征进一步在于, 所述主天线系统与所述移动终端的PCB板前端之间保留有一块净空区域,其宽度在移动终端工作频段的十分之一的工作波长以上。 The antenna system of claim 1 or 2 or as claimed in claim 3, further characterized in that the clearance area between retains a front end of the main PCB antenna system and the mobile terminal plate, having a width in a mobile terminal operating band work more than one-tenth of the wavelength.
5.一种带有金属框天线的LTE移动终端,其特征在于包括了权利要求1所述的天线系统。 A metal frame with an LTE mobile terminal antenna, comprising an antenna system according to claim 1.
6.一种利用移动终端的金属框所构成的天线系统,其特征在于,将移动终端外壳的金属框划分出两个区域,分别作为主天线系统和GPS天线系统,其中, 所述主天线系统包括辐射单元、耦合单元、供电激励单元和接地点; 所述GPS天线系统包括辐射单元、供电激励单元和接地点; 所述主天线系统的辐射单元、GPS天线系统的辐射单元均由一段移动终端的金属框构成。 An antenna system using a mobile terminal is composed of a metal frame, characterized in that the metal frame of the mobile terminal is divided into two housing areas, respectively, as a main antenna system and the GPS antenna system, wherein the main antenna system comprising a radiating element, a coupling unit, excitation power supply unit and the ground point; the system includes a GPS antenna radiating element, the excitation power supply unit and the ground; the main radiating element radiating element of the antenna system, the GPS antenna section of the mobile terminal by the system of a metal frame.
7.根据权利要求6所述的天线系统,其特征进一步在于, 所述的两个区域位于移动终端金属框的顶端和底端的一个边角上; 并且,所述的两个区域与非天线区域之间用开槽进行区隔。 7. The antenna system according to claim 6, further characterized in that said two corner regions located on a top and bottom of the metal frame of the mobile terminal; and, said two regions and the non-antenna area slotted performed between segments.
8.根据权利要求6所述的天线系统,其特征进一步在于, 所述主天线系统的辐射单元的长度设计为移动终端工作频段的四分之一到二分之一的工作波长; 所述GPS天线系统的辐射单元的长度设计为GPS卫星的工作波长的四分之一。 8. An antenna system according to claim 6, further characterized in that the length of the main radiating element of the antenna system is designed for an operating wavelength quarter to one-half of a mobile terminal operating band; said GPS a quarter of the length of the radiating element of the antenna system is designed to GPS satellites operating wavelength.
9.根据权利要求6或7或8所述的天线系统,其特征进一步在于, 所述主天线系统与所述移动终端的PCB板前端之间保留有一块净空区域,其宽度在移动终端工作频段的十分之一的工作波长以上。 9. The antenna system of claim 6 or 7 or as claimed in claim 8, further characterized in that the clearance area between retains a front end of the main PCB antenna system and the mobile terminal plate, having a width in a mobile terminal operating band work more than one-tenth of the wavelength.
10.一种带有金属框天线的UMTS移动终端,其特征在于包括了权利要求6所述的天线系统。 A metal frame with a UMTS mobile terminal antenna, comprising an antenna system according to claim 6.
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