WO2013029473A1 - 无线终端 - Google Patents

无线终端 Download PDF

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Publication number
WO2013029473A1
WO2013029473A1 PCT/CN2012/080282 CN2012080282W WO2013029473A1 WO 2013029473 A1 WO2013029473 A1 WO 2013029473A1 CN 2012080282 W CN2012080282 W CN 2012080282W WO 2013029473 A1 WO2013029473 A1 WO 2013029473A1
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WO
WIPO (PCT)
Prior art keywords
main board
shield
pcb
board
wireless terminal
Prior art date
Application number
PCT/CN2012/080282
Other languages
English (en)
French (fr)
Inventor
徐慧梁
孙树辉
兰尧
屠东兴
Original Assignee
华为终端有限公司
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 华为终端有限公司 filed Critical 华为终端有限公司
Priority to JP2013530558A priority Critical patent/JP5664885B2/ja
Priority to EP12798584.4A priority patent/EP2602870A4/en
Priority to US13/714,248 priority patent/US8604996B2/en
Publication of WO2013029473A1 publication Critical patent/WO2013029473A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/526—Electromagnetic shields
    • 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
    • H01Q1/245—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 means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • 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
    • H04B1/3833—Hand-held transceivers
    • H04B1/3838—Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use

Definitions

  • the present invention relates to the field of communications, and in particular, to a wireless terminal.
  • the Specific Absorption Rate refers to the electromagnetic wave energy absorption ratio of the wireless communication terminal equipment. It is usually used as an indicator to measure the intensity of electromagnetic radiation when the wireless communication terminal equipment is close to the body: The larger the SAR value, the greater the SAR value is. The greater the impact; on the contrary, the less impact. SAR has become one of the contents of the product packaging or instructions in the terminal manufacturers of many countries and regions. As more and more wireless communication terminal devices, such as mobile phones, data cards, tablets, etc., enter people's lives, people enjoy the convenience brought by wireless communication terminal devices, and gradually realize that such devices The electromagnetic radiation generated by the terminal equipment has many adverse effects on human health. For example, excessive electromagnetic radiation can cause functional disorders in the human central nervous system, causing headaches, insomnia and other symptoms.
  • the problem of excessive SAR value of wireless terminals has become a major problem in the industry. Since the SAR value of the wireless terminal is related to the test distance (distance between the radiator and the human body model) and the transmission power, that is, in the case where the transmission power is the same, the closer the test distance is, the larger the SAR value is. Therefore, each wireless terminal manufacturer In order to solve the above problems, the following schemes are generally used: reducing the transmission power of the wireless terminal; increasing the thickness of the whole machine (indirectly increasing the test distance). But obviously, reducing the transmit power of the wireless terminal will result in wireless radiated power (Total Radiation Power (TRP) is reduced, which reduces the wireless performance of wireless terminals. Increasing the thickness of the whole device will affect the user experience. Currently, the trend of wireless terminals is small, ultra-thin, easy to carry, and increase the thickness of the whole machine. Obviously not accepted by users.
  • TRP Total Radiation Power
  • the technical problem to be solved by the embodiments of the present invention is to provide a wireless terminal capable of effectively reducing the SAR value without affecting the wireless performance of the wireless terminal and the user experience, thereby reducing the influence of electromagnetic radiation on the human body.
  • the embodiment of the present invention uses the following technical solutions:
  • a wireless terminal includes a PCB main board, a mainboard circuit printed on both sides of the PCB main board, and a diversity antenna.
  • the diversity antenna is disposed at an end of the PCB main board, and the main board circuit on both sides of the PCB main board is separately covered.
  • a first main board shield and a second main board shield are disposed, and at least one side of the PCB main board is printed with a radiator, wherein the radiator and the main board circuit are respectively located on the PCB main board.
  • the first main-board shield and the second main-board shield are not in contact with the first main-board shield and/or the second main-board shield.
  • the wireless terminal of the embodiment of the present invention can effectively reduce the wireless performance of the wireless terminal and the user experience by affixing the first wave absorbing sheet on the first main board shield and/or the second main board shield.
  • the S AR value which reduces the impact of electromagnetic radiation on the human body.
  • FIG. 1 is a front view of a wireless terminal according to an embodiment of the present invention
  • FIG. 2 is a top view of a wireless terminal according to an embodiment of the present invention
  • FIG. 3 is a top plan view of a wireless terminal having a PCB sub-board according to an embodiment of the present invention
  • the embodiment of the invention provides a wireless terminal, which can effectively reduce the SAR value without affecting the wireless performance of the wireless terminal.
  • the wireless terminal of this embodiment includes a PCB main board 1, a mainboard circuit printed on both sides of the PCB main board 1, and a diversity antenna 10, and the diversity antenna 10 is disposed at the end of the PCB main board 1. Further, the arrangement of the main board circuit in the present invention can be printed only on one side of the PCB main board 1 according to actual needs.
  • the main board circuit on both sides of the PCB main board 1 is respectively provided with a first main board shield 21 and a second main board shield 22, wherein the first main board shield 21 and the second main board shield 22 are used to protect the cover
  • the motherboard circuit is immune to external electromagnetic interference.
  • a radiator 3 is also printed on at least one side of the PCB main board 1, and the radiator 3 can be printed only according to actual needs. Brushed on one side of the PCB main board 1, it can also be printed on both sides of the PCB main board 1.
  • the radiator 3 and the main board circuit are respectively located in different areas of the PCB main board 1, that is, an area where the radiator 3 and the main board circuit do not overlap on the PCB main board 1.
  • the radiator 3 and the first main board shield 21 are not in contact with each other, and the radiator 3 and the second main board shield 22 are not in contact with each other. Further, the first main board shield 21 and the second main board shield 22 are adjacent to the radiator 3
  • the distance between the edge position and the radiator 3 is preferably 0.5 mm to 1.0 mm.
  • the first absorbing panel 41 is attached to the first main board shield 21 and/or the second main board shield 22, that is, at least one side of the PCB main board 1 is attached.
  • the first absorbing panel 41 wherein one or two stickers can be reasonably selected according to actual conditions, index requirements, and the like.
  • the wave absorbing sheet in the present embodiment refers to a sheet-like body made of a absorbing material having a certain thickness.
  • the radiator 3 is generally divided into a radiation field and an induction field, and the energy generated corresponding to the radiation field and the induction field is called far field energy and near field energy, respectively.
  • Near-field energy is the most important energy that causes damage to the human body. It has been found that the near-field energy of the radiator 3 is concentrated near the feed point 31, as shown in Fig. 1, and extends toward the first main plate shield 21 and the second main plate shield 22.
  • the absorbing wave plate hardly affects the far-field energy when absorbing the near-field energy. Therefore, in order to ensure the absorption of the near-field energy as much as possible while ensuring that the radiation power of the radiator 3 is constant, the present embodiment shields the first main plate.
  • a first absorbing panel 41 is attached to the cover 21 and/or the second main board shield 22 to absorb near-field energy.
  • the first absorber 44 is attached to the end of the first main board shield and/or the second main board shield near the radiator. On the edge, in this way, the first absorber can absorb the near-field energy to the greatest extent.
  • the wireless terminal of this embodiment further includes a shield disposed on the first motherboard. 21 or the PCB sub-board 5 outside the second main board shield 22, that is, the PCB main board 1 and the PCB sub-board 5 are separated by a first main board shield 21 or a second main board shield 22.
  • a PCB sub-board 5 can be added to ensure the integrity of the circuit.
  • the PCB sub-board 5 is connected to the PCB main board 1 through a connector, wherein the connector may be a BTB (Board To Board) connector.
  • the side of the PCB sub-board 5 facing away from the first main board shield 21 or the second main board shield 22 is printed with a sub-board circuit, and the sub-board circuit is provided with a sub-shield shield 6 , and the sub-shield shield 6 is also used.
  • the sub-board circuit covered in the protection is protected from external electromagnetic interference.
  • a second wave absorbing sheet 42 is attached to the sub-shield shield 6. Further, in order to better absorb the near-field energy, the second wave absorbing sheet 42 is attached to the edge of the end of the sub-plate shield 6 close to the radiator 3.
  • the wireless terminal of this embodiment further includes a USB head 7 connected to the PCB main board 1 via a USB cable 8 and a metal piece 9, wherein the USB cable 8 includes a pair of signal lines and a pair of power lines.
  • the USB head 7 is a two-dimensional rotating structure including a first rotating shaft 71 and a second rotating shaft 72, wherein the first rotating shaft 71 is disposed on the USB head 7 and Between the USB cables 8, the second rotating shaft 72 is disposed between the metal piece 9 and the PCB main board 1.
  • the USB head 7 can be rotated 180 degrees with respect to the PCB main board 1, which greatly facilitates the use of the user.
  • the USB cable 8 is connected to the PCB main board 1 through the USB cable pad 81 on the PCB main board 1, that is, the USB cable 8 is soldered to the USB cable pad 81 of the PCB main board 1.
  • a third absorber 44 can also be attached to the USB cable pad 81.
  • a fourth wave absorbing plate 44 may be attached to the side of the second main plate shield 22 and the sub-shield shield 6 to further absorb near-field energy.
  • a wave absorbing sheet may be attached to the side of the first main board shield cover 21.
  • the position of the wave absorbing sheet in the present embodiment is not limited to the above four positions, and may be attached to any position around the radiator 3 except for being directly attached to the radiator 3.
  • the wireless terminal of the embodiment can effectively reduce the SAR without affecting the wireless performance of the wireless terminal and the user experience by attaching the first wave absorbing sheet to the first main board shield and/or the second main board shield.
  • the value which reduces the impact of electromagnetic radiation on the human body.
  • the first wave absorbing sheet is attached to the edge of the end of the first main board shield and/or the second main board shield close to the radiator, so that the absorption efficiency of the absorber is optimized.
  • the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. .
  • the technical solution of the present invention which is essential or contributes to the prior art, can be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer.
  • a hard disk or optical disk, etc. includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

Abstract

本发明实施例公开了一种无线终端，涉及通信领域，能够在不影响无线终端无线性能的前提下，有效降低 SAR值，从而减少了电磁辐射对人体的影响。本发明实施例的无线终端，包括 PCB主板和印制在所述 PCB 主板两侧的主板电路，所述 PCB主板、印制在所述 PCB主板两侧的主板电路和分集天线，所述分集天线设置于所述 PCB主板的末端，所述 PCB 主板两侧的主板电路上分别罩设有第一主板屏蔽罩和第二主板屏蔽罩，所述 PCB主板的至少一个侧面上印制有辐射体，所述辐射体与主板电路分别位于所述 PCB主板不同的区域，所述第一主板屏蔽罩和/或第二主板屏蔽罩上贴设有第一吸波片。

Description

无线终端 本申请要求于 2011 年 8 月 31 日提交中国专利局、 申请号为 201110255653.0、 发明名称为"无线终端"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
本发明涉及通信领域， 尤其涉及一种无线终端。
背景技术
人体比吸收率 （Specific Absorption Rate, 简称 SAR ) 是指无线 通信终端设备的电磁波能量吸收比值， 它通常作为衡量无线通信终端 设备近身时电磁辐射强弱的指标： SAR值越大， 表示对人体的影响越 大； 反之， 则影响较小。 SAR已成为许多国家和地区的终端厂商在产 品包装或说明书中标示的内容之一。 随着越来越多的无线通信终端设备， 如手机、 数据卡、 平板电脑 等， 进入人们的生活， 人们在享受无线通信终端设备带来的各种便利 的同时， 也逐渐意识到， 此类终端设备产生的电磁辐射会对人体健康 造成许多不良影响。 例如， 过多的电磁辐射会对人的中枢神经系统造 成机能性障碍， 引起头痛、 失眠等症状。 目前， 无线终端 SAR值超标 的问题已成为业界一大难题。 由于无线终端的 SAR值与测试距离（辐 射体与人体模型之间的距离） 和发射功率有关， 即在发射功率相同的 情况下， 测试距离越近， SAR值越大， 因此， 各无线终端厂商为解决 上述问题， 一般釆用以下方案： 降低无线终端的发射功率； 增加整机 厚度 （间接增加测试距离） 。 但显然， 降低无线终端的发射功率会导致无线辐射功率 （ Total Radiation Power, 简称 TRP )减小， 从而降低了无线终端的无线性能； 增 加整机的厚度会影响用户的使用感受，并且目前无线终端的趋势是小巧、 超薄、 易携带， 增加整机的厚度明显不会被用户所接受。
发明内容
本发明的实施例所要解决的技术问题在于提供一种无线终端， 能够 在不影响无线终端无线性能和用户使用体验的前提下，有效降低 SAR 值， 从而减少了电磁辐射对人体的影响。 为解决上述技术问题， 本发明的实施例釆用如下技术方案：
一种无线终端， 包括 PCB主板、 印制在所述 PCB主板两侧的主 板电路和分集天线， 所述分集天线设置于所述 PCB主板的末端， 所述 PCB 主板两侧的主板电路上分别罩设有第一主板屏蔽罩和第二主板屏 蔽罩， 所述 PCB主板的至少一个侧面上印制有辐射体， 其特征在于， 所述辐射体与所述主板电路分别位于所述 PCB主板不同的区域， 且所 述辐射体与所述第一主板屏蔽罩和第二主板屏蔽罩均不接触， 所述第 一主板屏蔽罩和 /或第二主板屏蔽罩上贴设有第一吸波片。
本发明实施例的无线终端， 通过在第一主板屏蔽罩和 /或第二主板屏 蔽罩上贴设第一吸波片， 能够在不影响无线终端无线性能和用户使用体 验的前提下， 有效降低 S AR值， 从而减少了电磁辐射对人体的影响。 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。 图 1为本发明实施例中无线终端的主视图； 图 2为本发明实施例中无线终端的俯视图； 图 3为本发明实施例中具有 PCB副板的无线终端的俯视图之一； 图 4为本发明实施例中具有 PCB副板的无线终端的俯视图之二。 附图标记说明：
1、 PCB 主板 21、 第一主板屏蔽罩 22、 第二主板屏蔽罩 3、辐射体 31、馈点 41、第一吸波片 42、第二吸波片 43、 第三吸波片 44、 第四吸波片 5、 PCB 副板 6、 副板屏蔽罩 7、 USB头 71、 第一旋转轴 72、 第二旋转轴 8、 USB线缆 81、 USB线缆焊盘 9、 金属片 10、 分集天线
具体实施方式
本发明实施例提供一种无线终端， 能够在不影响无线终端无线性 能的前提下， 有效降低 SAR值。
下面结合附图对本发明实施例做详细描述。
本实施例的无线终端， 如图 1和图 2所示， 包括 PCB主板 1、 印 制在 PCB主板 1两侧的主板电路和分集天线 10 , 分集天线 10设置于 PCB主板 1 的末端。 此外， 本发明中主板电路的设置也可以根据实际 需要仅印刷在 PCB主板 1的其中一个侧面上。
PCB主板 1 两侧的主板电路上分别罩设有第一主板屏蔽罩 21和 第二主板屏蔽罩 22 , 其中， 第一主板屏蔽罩 21和第二主板屏蔽罩 22 的作用是保护被罩在其中的主板电路不受外界的电磁干扰。 PCB主板 1 的至少一个侧面上还印制有辐射体 3 ,辐射体 3可以根据实际需要仅印 刷在 PCB主板 1的一个侧面上，也可以印刷在 PCB主板 1的两个侧面 上。 辐射体 3与主板电路分别位于 PCB主板 1不同的区域， 即辐射体 3与主板电路在 PCB主板 1上没有重叠的区域。 且辐射体 3与第一主 板屏蔽罩 21 互不接触、 辐射体 3与第二主板屏蔽罩 22也互不接触， 进一步的， 第一主板屏蔽罩 21和第二主板屏蔽罩 22靠近辐射体 3 的 边沿位置与辐射体 3之间的距离优选为 0.5mm~1.0mm。
为减小辐射体 3的电磁辐射， 本实施例在第一主板屏蔽罩 21和 / 或第二主板屏蔽罩 22上贴设第一吸波片 41 , 即 PCB主板 1的至少一 个侧面上贴有第一吸波片 41 , 其中， 贴一个或者两个可根据实际情况、 指标要求等， 合理选择。 本实施例中的吸波片是指具有一定厚度的使 用吸波材料制作而成的片状体。
辐射体 3通常分为辐射场和感应场， 辐射场和感应场相对应的产 生的能量分别称为远场能量和近场能量。 近场能量是对人体造成损害 的最主要的能量。 研究发现， 辐射体 3的近场能量集中分布在馈点 31 附近， 如图 1 中所示， 并向第一主板屏蔽罩 21 和第二主板屏蔽罩 22 区域延伸。 吸波片在吸收近场能量时， 几乎不影响远场能量， 因此， 在保证辐射体 3 的辐射功率不变的情况下， 为了尽量多的吸收近场能 量， 本实施例在第一主板屏蔽罩 21和 /或第二主板屏蔽罩 22上贴设第 一吸波片 41 , 以吸收近场能量。
进一步的， 如图 2所示， 为更好的吸收辐射体 3的近场能量， 第 一吸波片 41 贴设在第一主板屏蔽罩和 /或第二主板屏蔽罩靠近辐射体 的一端的边缘上， 这样， 第一吸波片能够最大程度的吸收近场能量。
如图 3所示， 本实施例的无线终端还包括设置在第一主板屏蔽罩 21或第二主板屏蔽罩 22外侧的 PCB副板 5 , 即 PCB主板 1和 PCB副 板 5之间隔有第一主板屏蔽罩 21或第二主板屏蔽罩 22。在电路设计中， 当 PCB主板 1的空间不足以布下所需的电路器件时， 可增加一个 PCB 副板 5 , 以保证电路的完整。 PCB副板 5通过连接器与 PCB主板 1相 连接， 其中， 连接器可以是 BTB ( Board To Board )连接器。 PCB副板 5背离第一主板屏蔽罩 21或第二主板屏蔽罩 22的一侧上印制有副板电 路， 副板电路上罩设有副板屏蔽罩 6 , 副板屏蔽罩 6的作用也是保护被 罩在其中的副板电路不受外界的电磁干扰。 副板屏蔽罩 6 上贴设有第 二吸波片 42。 进一步的， 为更好的吸收近场能量， 第二吸波片 42贴设 在副板屏蔽罩 6靠近辐射体 3的一端的边缘上。
本实施例的无线终端还包括 USB头 7 , USB头 7通过 USB线缆 8和金属片 9与 PCB主板 1相连接， 其中， USB线缆 8包括一对信号 线和一对电源线。 为方便用户的使用， 作为本发明的一种实施方式， USB头 7为二维旋转结构， 包括第一旋转轴 71和第二旋转轴 72 , 其 中， 第一旋转轴 71设置在 USB头 7和 USB线缆 8之间， 第二旋转轴 72设置在金属片 9与 PCB主板 1之间， 这样， USB头 7就可相对于 PCB主板 1作 180度的旋转， 大大方便了用户的使用。
USB线缆 8通过 PCB主板 1上的 USB线缆焊盘 81与 PCB主板 1相连接， 即 USB线缆 8焊接在 PCB主板 1的 USB线缆焊盘 81上。 为进一步吸收近场能量， USB线缆焊盘 81上还可贴设第三吸波片 43。
进一步的， 如图 4所示， 第二主板屏蔽罩 22和副板屏蔽罩 6的 侧边上还可贴设第四吸波片 44 , 以进一步吸收近场能量。 此外， 第一 主板屏蔽罩 21的侧边上也可贴设吸波片。 此外， 本实施例中吸波片的位置不仅限于上述四种位置， 还可以 贴设在辐射体 3周围的除直接贴在辐射体 3之外的任何一个位置。
大量实验证明， 在按照上述方法贴设吸波片后， 在辐射功率基本 保持不变的情况下， 无线终端的 SAR值有效的减小。
本实施例的无线终端，通过在第一主板屏蔽罩和 /或第二主板屏蔽 罩上贴设第一吸波片， 能够在不影响无线终端无线性能和用户使用体 验的前提下， 有效降低 SAR值， 从而减少了电磁辐射对人体的影响。 进 一步的， 本实施例还将第一吸波片贴设在第一主板屏蔽罩和 /或第二主 板屏蔽罩靠近辐射体的一端的边缘上， 使吸波片的吸收效率达到最佳。
通过以上的实施方式的描述， 所属领域的技术人员可以清楚地了解到 本发明可借助软件加必需的通用硬件的方式来实现， 当然也可以通过硬件， 但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案 本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出 来， 该计算机软件产品存储在可读取的存储介质中， 如计算机的软盘，硬盘 或光盘等， 包括若干指令用以使得一台计算机设备（可以是个人计算机， 月良 务器， 或者网络设备等）执行本发明各个实施例所述的方法。
以上所述， 仅为本发明的具体实施方式， 但本发明的保护范围并不 局限于此， 任何熟悉本技术领域的技术人员在本发明揭露的技术范围 内， 可轻易想到变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保护范围应以权利要求的保护范围为准。

Claims

权 利 要 求
1、 一种无线终端， 包括 PCB主板、 印制在所述 PCB主板两侧的 主板电路和分集天线， 所述分集天线设置于所述 PCB主板的末端， 所 述 PCB主板两侧的主板电路上分别罩设有第一主板屏蔽罩和第二主板 屏蔽罩， 所述 PCB主板的至少一个侧面上印制有辐射体， 其特征在于， 所述辐射体与所述主板电路分别位于所述 PCB主板不同的区域， 且所 述辐射体与所述第一主板屏蔽罩和第二主板屏蔽罩均不接触， 所述第 一主板屏蔽罩和 /或第二主板屏蔽罩上贴设有第一吸波片。
2、 根据权利要求 1 所述的无线终端， 其特征在于， 所述第一吸 波片贴设在所述第一主板屏蔽罩和 /或第二主板屏蔽罩靠近辐射体的一 端的边缘上。
3、 根据权利要求 1 或 2所述的无线终端， 其特征在于， 所述第 一主板屏蔽罩和第二主板屏蔽罩靠近所述辐射体的边沿与所述辐射体 之间的 巨离为 0.5mm〜： l .0mm。
4、 根据权利要求 1 所述的无线终端， 其特征在于， 所述还包括 设置在所述第一主板屏蔽罩或第二主板屏蔽罩外侧的 PCB副板， 所述 PCB副板通过连接器与所述 PCB主板相连接，所述 PCB副板背离所述 第一主板屏蔽罩或第二主板屏蔽罩的一侧上印制有副板电路， 所述副 板电路上罩设有副板屏蔽罩， 所述副板屏蔽罩上贴设有第二吸波片。
5、 根据权利要求 4 所述的无线终端， 其特征在于， 所述第二吸 波片贴设在所述副板屏蔽罩靠近辐射体的一端的边缘上。
6、 根据权利要求 1所述的无线终端， 其特征在于， 还包括 USB 头， 所述 USB头通过 USB线缆和金属片与所述 PCB主板相连接。
7、 根据权利要求 6所述的无线终端， 其特征在于， 所述 USB线 缆通过所述 PCB主板上的 USB线缆焊盘与所述 PCB主板相连接， 所 述 USB线缆焊盘上贴设有第三吸波片。
8、 根据权利要求 6所述的无线终端， 其特征在于， 所述 USB线 缆包括一对信号线和一对电源线。
9、 根据权利要求 1或 4所述的无线终端， 其特征在于， 所述第二主板 屏蔽罩和所述副板屏蔽罩的侧边上贴设有第四吸波片。
PCT/CN2012/080282 2011-08-31 2012-08-17 无线终端 WO2013029473A1 (zh)

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