WO2012152103A1 - 无线终端 - Google Patents

无线终端 Download PDF

Info

Publication number
WO2012152103A1
WO2012152103A1 PCT/CN2012/071356 CN2012071356W WO2012152103A1 WO 2012152103 A1 WO2012152103 A1 WO 2012152103A1 CN 2012071356 W CN2012071356 W CN 2012071356W WO 2012152103 A1 WO2012152103 A1 WO 2012152103A1
Authority
WO
WIPO (PCT)
Prior art keywords
wireless terminal
parasitic
parasitic unit
circuit board
printed circuit
Prior art date
Application number
PCT/CN2012/071356
Other languages
English (en)
French (fr)
Inventor
张璐
李龙
杨阳
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US14/352,287 priority Critical patent/US20140253411A1/en
Publication of WO2012152103A1 publication Critical patent/WO2012152103A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • 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
    • 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
    • H01Q1/48—Earthing means; Earth screens; Counterpoises

Definitions

  • the present invention relates to the field of communications, and in particular to a wireless terminal.
  • wireless terminals such as mobile terminals or data cards have been widely used, and at the same time, the influence of wireless terminals on electromagnetic radiation of the human body has also been enhanced.
  • the measure of the electromagnetic radiation of the antenna to the human body is the Specific Absorption Rate (SAR).
  • SAR refers to the electromagnetic wave energy absorption ratio of the wireless terminal, which means: "The electromagnetic wave absorbed by the unit mass of the biological tissue per unit time. Energy" in W/kg or mW/g.
  • FIG. 1 is a schematic diagram of a basic structure of a data card type terminal product and a SAR measurement surface according to the related art. As shown in FIG. 1, the data card type terminal mostly adopts a cube-shaped casing 11, and the whole machine passes through a USB connector 12 and a notebook. Connected.
  • the FCC requires at least the human body SAR values of the four sides of the upper, lower, left and right sides to be measured, that is, corresponding to the P1, P2, P3 and P4 plane directions in Fig. 1, the test distance is 5 mm.
  • the SAR value of the P5 side of the data card is also measured. This is done in consideration of the fact that all human bodies are radiated near the data card in the daily use scenario.
  • the existing wireless terminal SAR peak reduction technology mostly applies the absorbing material and/or the radiation protection layer on the surface of the wireless terminal casing, and the method is high in production cost, and the absorbing material and/or the radiation shielding layer will be Absorb useful signals and affect communication quality.
  • a wireless terminal includes: a printed circuit board; an antenna coupled to the printed circuit board and configured to transmit electromagnetic waves; and a parasitic unit coupled to the printed circuit board to reduce SAR peaks of the electromagnetic waves;
  • the total component, coupled to the parasitic element is set to adjust the magnitude and phase of the current of the parasitic element.
  • the lumped elements are arranged on the parasitic unit. The lumped element is coupled between the parasitic element and the printed circuit board.
  • the lumped component includes at least one of the following: a capacitor, an inductor, and a resistor.
  • the length of the parasitic unit is one quarter of the operating wavelength of the electromagnetic wave.
  • the shape of the parasitic unit is a separate zigzag line.
  • the shape of the parasitic unit is a symmetrical zigzag line.
  • the material of the parasitic unit is metal.
  • the utility model adds lumped elements on a parasitic unit coupled to a printed circuit board in a wireless terminal, adjusts the lumped component value, changes the amplitude and phase of the current at the parasitic unit, and realizes near-field coupling of the antenna and the parasitic unit. Compensation, weakening the near-field peak and ensuring far-field operation.
  • FIG. 1 is a schematic diagram of a basic structure of a data card type terminal product and a SAR measurement surface according to the related art
  • FIG. 2 is a schematic structural view of a wireless terminal according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram 2 of a wireless terminal according to a preferred embodiment of the present invention
  • FIG. 5 is a schematic diagram of another routing form that a parasitic unit can adopt according to an embodiment of the present invention.
  • FIG. 6 is a second schematic diagram of another trace form that a parasitic unit can take according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram 3 of another trace form that a parasitic unit can take according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram 4 of another trace form that a parasitic unit can take according to an embodiment of the present invention
  • FIG. 9 is according to FIG.
  • FIG. 10 is a schematic diagram 6 of another wiring form that a parasitic unit can adopt according to an embodiment of the present invention
  • FIG. 11 is implemented according to the present invention.
  • the lumped components of the example are on the P1-P4 plane with different load capacitance values.
  • FIG. 12 is a schematic diagram showing a variation curve of SAR peaks on P1-P4 planes of lumped elements under different load inductance values according to an embodiment of the present invention
  • FIG. 13 is a diagram according to an embodiment of the present invention. Schematic diagram of the variation of the SAR peak on the P1-P4 plane of the lumped element under different load resistance values.
  • the wireless terminal includes: a printed circuit board 21; and an antenna 22 coupled to be printed.
  • the circuit board 21 is arranged to transmit electromagnetic waves;
  • the parasitic unit 23 is coupled to the printed circuit board 21 and arranged to reduce the SAR peak of the electromagnetic wave;
  • the lumped element 24 is coupled to the parasitic unit 23 and arranged to adjust the parasitic unit 23 The magnitude and phase of the current.
  • a wireless terminal that reduces SAR peaks uses an absorbing material and/or a radiation preventing layer, and thus has high production cost and affects communication quality.
  • the lumped element 24 is added to the parasitic unit 23 coupled to the printed circuit board 21 in the wireless terminal, the lumped element value is adjusted, and the amplitude and phase of the current at the parasitic unit 23 are changed to realize the antenna.
  • the near-field coupling compensation of 22 and parasitic element 23 attenuates the near-field peak and ensures the operating state of the far-field. Therefore, the utility model reduces the SAR without affecting the communication quality of the wireless terminal, and reduces the production cost.
  • 3 is a first schematic diagram of the structure of a wireless terminal in accordance with a preferred embodiment of the present invention. As shown in FIG.
  • the lumped element 24 can be disposed on a parasitic element 23 to change the corresponding equivalent electrical length of the parasitic element 23.
  • 4 is a schematic structural view of a wireless terminal according to a preferred embodiment of the present invention. As shown in FIG. 4, the lumped element 24 may also be located at other positions of the parasitic unit 23, for example, coupled to the parasitic unit 23 and the printed circuit board 21. This further increases the degree of design freedom. It should be noted that the lumped element 24 can be realized by a capacitor, an inductor, and a resistor. In addition, in FIGS. 3 and 4 described above, an antenna feed 25 coupled between the antenna 22 and the printed circuit board 21 is further included.
  • the parasitic unit 23 will be described in detail below in terms of length, shape and material, respectively.
  • the length of the parasitic unit 23 may be one quarter of the operating wavelength of the electromagnetic wave.
  • the length of the parasitic element 23 can be other values, but when taking a quarter of the operating wavelength of the electromagnetic wave, the effect of reducing the SAR peak is best.
  • the shape of the parasitic unit 23 may be a single zigzag line or a symmetrical zigzag line.
  • FIG. 5 is a first schematic diagram of another trace form that a parasitic unit can take according to an embodiment of the present invention.
  • FIG. 6 is a second schematic diagram of another trace form that a parasitic unit can adopt according to an embodiment of the present invention, as shown in FIG. 5 .
  • the parasitic unit 23 is located on the side of the printed circuit board 21, and is in the form of a single zigzag line.
  • the parasitic unit 23 is processed into a zigzag line, which can save the structural space of the wireless terminal and facilitate miniaturization of the wireless terminal.
  • FIG. 5 is a first schematic diagram of another trace form that a parasitic unit can take according to an embodiment of the present invention.
  • FIG. 6 is a second schematic diagram of another trace form that a parasitic unit can adopt according to an embodiment of the present invention, as shown in FIG. 5 .
  • the parasitic unit 23 is located
  • FIG. 7 is a third schematic diagram of another trace form that a parasitic unit can take according to an embodiment of the present invention.
  • the parasitic unit 23 is located on the side of the printed circuit board 21, in a symmetrical straight line form.
  • FIG. 8 is a schematic diagram 4 of another trace form that a parasitic unit can adopt according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram 5 of another trace form that a parasitic unit can adopt according to an embodiment of the present invention, as shown in FIG.
  • the parasitic unit 23 is located on the side of the printed circuit board 21, in the form of a symmetrical broken line.
  • FIG. 10 is a schematic diagram 6 of another trace form that a parasitic unit can employ according to an embodiment of the present invention. As shown in FIG. 10, the parasitic unit 23 is located on the side of the printed circuit board 21, in the form of a symmetrical line.
  • the material of the parasitic unit 23 may be metal.
  • the parasitic element 23 is made of a common metal and can be directly etched on the printed circuit board 21, which reduces the production cost. Based on the wireless terminal described above, the present invention also provides experimental parameters to prove that it can reduce the SAR without affecting the communication quality of the wireless terminal. A detailed description will be made below with reference to FIGS. 6a to 6c. 11 to FIG. 13 are graphs showing changes in SAR peak value of a CDMA data card according to a lumped device rating of a parasitic unit, as shown in the figure, the lumped element 24 is changed by changing the parasitic unit 23 and printing. The lumped element nominal parameters between the circuit boards 21 cause the SAR peak to change.
  • the data card operates in the CDMA 800 MHz (Cellular) and P 1900 MHz (PCS) bands, and the size of the printed circuit board 21 is 23 mm x 60 mm.
  • the antenna 22 is in the form of a branched monopole carrier antenna located at the top of the printed circuit board 21. Data card measurements and simulations show that the SAR peak appears in the 1900MHz band. 11 is a schematic diagram showing the variation of the SAR peak value on the P1-P4 plane of the lumped element under different load capacitance values according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram showing the variation of the SAR peak value on the P1-P4 plane of the lumped element under different load inductance values according to an embodiment of the present invention, wherein the corresponding inductance value selection points are: lnH, 4nH, 16nH, 64nH, and 256nH, as shown in Figure 6b, relatively speaking, when the inductance value is InH, the SAR peaks on the four measurement surfaces are lower.
  • Figure 13 is a P1-P4 face of a lumped element at different load resistance values in accordance with an embodiment of the present invention.
  • a wireless terminal is provided.
  • the utility model adds the lumped element 24 to the parasitic unit 23 coupled to the printed circuit board 21 in the wireless terminal, adjusts the lumped element value, changes the amplitude and phase of the current at the parasitic unit 23, and realizes the antenna 22 and the parasitic
  • the near field coupling compensation of unit 23 attenuates near field peaks and ensures far field operation. Therefore, the utility model reduces the SAR without affecting the communication quality of the wireless terminal, and reduces the production cost.
  • the network can be implemented by program code executable by the computing device, thereby They may be stored in a storage device by a computing device, or they may be fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof may be implemented as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Abstract

本实用新型公开了一种无线终端，该无线终端包括：印制电路板（21）；天线（22），耦合在印制电路板（21）上，设置为传输电磁波；寄生单元（23），耦合在印制电路板（21）上，设置为降低电磁波的SAR峰值；集总元件（24），耦合在寄生单元（23）上，设置为调整寄生单元（23）的电流的幅值和相位。本实用新型在不影响无线终端通信质量的前提下降低了SAR，减少了生产成本。

Description

无线终端 技术领域 本实用新型涉及通信领域， 具体而言， 涉及一种无线终端。 背景技术 随着无线通信技术高速发展， 移动终端或数据卡等无线终端得到了广泛的应用， 同时， 无线终端对人体的电磁辐射影响也增强了。 目前， 衡量天线对人体的电磁辐射的指标为比吸收率 （ Specific Absorption Rate, 简称为 SAR)， SAR是指无线终端电磁波能量吸收比值， 其含意是： "生物组织单位时 间单位质量所吸收的电磁波能量"，单位为 W/kg或 mW/g。美国联邦电信委员会 ( Federal Communications Commission, 简称为 FCC) 明确规定了各种无线终端在与人体相互作 用时允许的最大 SAR， 并规定移动终端的 SAR应在移动终端靠近人脑一侧时测量； 数据卡的 SAR必须在数据卡附近的四个面上测量。因此在保证无线终端通信质量和小 型化便携性的同时有效地降低对人体的辐射已成为业界亟待解决的重要问题。 图 1是根据相关技术的数据卡类终端产品基本结构和 SAR测量面的示意图，如图 1所示， 这种数据卡型终端多采用立方体形机壳 11， 整机通过 USB连接器 12和笔记 本相连。对应此类造型的数据卡， FCC规定至少需要测量上下左右 4个侧面的人体 SAR 值， 即对应图 1中的 Pl、 P2、 P3和 P4面方向， 测试距离为 5 mm。 在某些特殊情况 下， 还要测量数据卡顶端 P5面的 SAR值， 这样做是考虑在日常使用场景中所有的人 体靠近数据卡被辐射的情况。 现有的无线终端 SAR峰值的降低技术多为在无线终端机壳表面涂敷吸波材料和 / 或防辐射层等，这种方法生产成本较高，并且吸波材料和 /或防辐射层会吸收有用信号， 影响通信质量。 实用新型内容 本实用新型提供了一种无线终端，以至少解决相关技术中降低 SAR峰值的无线终 端采用吸收材料和 /或防辐射层， 生产成本高且影响通信质量的问题。 根据本实用新型提供的无线终端包括： 印制电路板； 天线， 耦合在印制电路板上， 设置为传输电磁波；寄生单元，耦合在印制电路板上，设置为降低电磁波的 SAR峰值; 集总元件， 耦合在寄生单元上， 设置为调整寄生单元的电流的幅值和相位。 集总元件布置在寄生单元上。 集总元件耦合在寄生单元与印制电路板之间。 集总元件包括以下至少之一： 电容、 电感、 电阻。 寄生单元的长度是电磁波的工作波长的四分之一。 寄生单元的形状是单独的曲折线。 寄生单元的形状是对称的曲折线。 寄生单元的材料是金属。 本实用新型通过在无线终端中耦合在印制电路板上的寄生单元上添加集总元件， 调整集总元件值， 改变寄生单元处电流的幅值和相位， 实现天线和寄生单元的近场耦 合补偿， 减弱近场峰值， 并保证远场工作状态。 因此， 本实用新型在不影响无线终端 通信质量的前提下降低了 SAR， 减少了生产成本。 附图说明 此处所说明的附图用来提供对本实用新型的进一步理解， 构成本申请的一部分， 本实用新型的示意性实施例及其说明用于解释本实用新型， 并不构成对本实用新型的 不当限定。 在附图中： 图 1是根据相关技术的数据卡类终端产品基本结构和 SAR测量面的示意图； 图 2是根据本实用新型实施例的无线终端的结构示意图； 图 3是根据本实用新型优选实施例的无线终端的结构示意图一； 图 4是根据本实用新型优选实施例的无线终端的结构示意图二； 图 5是根据本实用新型实施例的寄生单元可以采用的其他走线形式的示意图一； 图 6是根据本实用新型实施例的寄生单元可以采用的其他走线形式的示意图二； 图 7是根据本实用新型实施例的寄生单元可以采用的其他走线形式的示意图三； 图 8是根据本实用新型实施例的寄生单元可以采用的其他走线形式的示意图四； 图 9是根据本实用新型实施例的寄生单元可以采用的其他走线形式的示意图五； 图 10是根据本实用新型实施例的寄生单元可以采用的其他走线形式的示意图六； 图 11 是根据本实用新型实施例的集总元件在不同的加载电容值下的 P1-P4面上
SAR峰值的变化曲线示意图； 图 12是根据本实用新型实施例的集总元件在不同的加载电感值下的 P1-P4面上 SAR峰值的变化曲线示意图； 图 13 是根据本实用新型实施例的集总元件在不同的加载电阻值下的 P1-P4面上 SAR峰值的变化曲线示意图。 具体实施方式 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。 下面将参考附图并结合实施例来详细说明本实用新型。 本实用新型提供了一种无线终端， 图 2是根据本实用新型实施例的无线终端的结 构示意图， 如图 2所示， 该无线终端包括： 印制电路板 21 ; 天线 22， 耦合在印制电路 板 21上， 设置为传输电磁波； 寄生单元 23， 耦合在印制电路板 21上， 设置为降低电 磁波的 SAR峰值的； 集总元件 24， 耦合在寄生单元 23上， 设置为调整寄生单元 23 的电流的幅值和相位。 相关技术中， 降低 SAR峰值的无线终端采用吸收材料和 /或防辐射层， 因此生产 成本高且影响通信质量。 本实用新型实施例中， 在无线终端中耦合在印制电路板 21 上的寄生单元 23上添加集总元件 24， 调整集总元件值， 改变寄生单元 23处电流的幅 值和相位， 实现天线 22和寄生单元 23的近场耦合补偿， 减弱近场峰值， 并保证远场 的工作状态。 因此， 本实用新型在不影响无线终端通信质量的前提下降低了 SAR， 减 少了生产成本。 图 3是根据本实用新型优选实施例的无线终端的结构示意图一， 如图 3所示， 该 集总元件 24可以布置在寄生单元上 23， 从而改变寄生单元 23相应的等效电长度。 图 4是根据本实用新型优选实施例的无线终端的结构示意图二， 如图 4所示， 集 总元件 24还可以位于寄生单元 23的其它位置，例如耦合在寄生单元 23与印制电路板 21之间， 这样进一步增加了设计自由度。 需要说明的是， 集总元件 24可以通过电容、 电感、 电阻而实现。 另外， 在上述图 3和图 4中， 还包括耦合在天线 22和印刷电路板 21之间的天线 馈源 25。 下面分别从长度、 形状和材料三方面对寄生单元 23进行详细描述。
( 1 ) 寄生单元 23 的长度可以是电磁波的工作波长的四分之一。 该寄生单元 23 的长度可以是其它数值， 但是取电磁波工作波长的四分之一时， 降低 SAR峰值的效果 最好。
(2) 寄生单元 23的形状可以是单独的曲折线， 或者是对称的曲折线。 图 5是根据本实用新型实施例的寄生单元可以采用的其他走线形式的示意图一， 图 6是根据本实用新型实施例的寄生单元可以采用的其他走线形式的示意图二， 如图 5、 图 6所示， 寄生单元 23位于印制电路板 21—侧， 采用单曲折线形式。 寄生单元 23加工成曲折线的形式， 可节约无线终端的结构空间， 有利于无线终端的小型化。 图 7是根据本实用新型实施例的寄生单元可以采用的其他走线形式的示意图三， 如图 7所示， 寄生单元 23位于印制电路板 21—侧， 采用对称的直线形式。 图 8是根据本实用新型实施例的寄生单元可以采用的其他走线形式的示意图四， 图 9是根据本实用新型实施例的寄生单元可以采用的其他走线形式的示意图五， 如图 8、 图 9所示， 寄生单元 23位于印制电路板 21—侧， 采用对称的折线形式。 寄生单元 23加工成曲折线的形式， 可节约无线终端的结构空间， 有利于无线终端的小型化。 图 10是根据本实用新型实施例的寄生单元可以采用的其他走线形式的示意图六， 如图 10所示， 寄生单元 23位于印制电路板 21—侧， 采用类似对称的折线形式。
(3 ) 寄生单元 23的材料可以是金属。 采用常用的金属制作寄生单元 23， 可直接 刻蚀在印制电路板 21上， 这样就降低了生产成本。 基于上述的无线终端， 本实用新型还提供了其实验参数， 以证明其可以在不影响 无线终端通信质量的前提下降低了 SAR。 下面结合图 6a至图 6c进行具体描述。 图 11至图 13是根据本实用新型实施例的某 CDMA数据卡的 SAR峰值随寄生单 元的集总器件额定值变化的曲线图， 如图所示， 集总元件 24通过改变寄生单元 23与 印制电路板 21 之间的集总元件额定参数， 使 SAR峰值发生改变。 该数据卡工作在 CDMA 800MHz ( Cellular ) 禾 P 1900MHz ( PCS ) 频段， 印制电路板 21 的尺寸为 23mmx60mm, 天线 22采用分支结构的单极子支架天线形式， 位于印制电路板 21的 顶端。 数据卡实测和仿真表明 SAR峰值出现在 1900MHz频段。 图 11 是根据本实用新型实施例的集总元件在不同的加载电容值下的 P1-P4面上 SAR峰值的变化曲线示意图，图中对应电容值选取点为： 0.112pF、0.4479pF、 1.9717pF、 7.1668pF和 42.328pF， 如图 6a所示， 相对来说， 当电容值为 42.328pF时， 4个测量 面上的 SAR峰值均较低。 图 12是根据本实用新型实施例的集总元件在不同的加载电感值下的 P1-P4面上 SAR峰值的变化曲线示意图， 图中对应电感值选取点为： lnH、 4nH、 16nH、 64nH和 256nH, 如图 6b所示， 相对来说， 当电感值为 InH时， 4个测量面上的 SAR峰值均 较低。 图 13 是根据本实用新型实施例的集总元件在不同的加载电阻值下的 P1-P4面上
SAR峰值的变化曲线示意图， 图中对应电阻值选取点为： 10hm、 40hm、 16 Ohm、 64 Ohm、 256 Ohm和 1024 Ohm, 如图 6c所示， 相对来说， 当电阻值为 40hm时， 4个 测量面上的 SAR峰值均较低。 从以上三图中可看出， 将寄生单元 23与印制电路板 21之间的耦合电容、 电感、 电阻设置为合适的值， 都可使得 SAR峰值在 4个测量面上达到相对的较低值。 需要说明的是， 本实用新型不仅局限于数据卡类终端产品， 对于手机和平板笔记 本等类型的终端产品同样适用。 综上所述， 根据本实用新型的上述实施例， 提供了一种无线终端。 本实用新型通 过在无线终端中耦合在印制电路板 21上的寄生单元 23上添加集总元件 24， 调整集总 元件值， 改变寄生单元 23处电流的幅值和相位， 实现天线 22和寄生单元 23的近场耦 合补偿， 减弱近场峰值， 并保证远场工作状态。 因此， 本实用新型在不影响无线终端 通信质量的前提下降低了 SAR， 减少了生产成本。 显然， 本领域的技术人员应该明白， 上述的本实用新型的各模块或各步骤可以用 通用的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布在多个计算装 置所组成的网络上， 可选地， 它们可以用计算装置可执行的程序代码来实现， 从而， 可以将它们存储在存储装置中由计算装置来执行， 或者将它们分别制作成各个集成电 路模块， 或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样， 本 实用新型不限制于任何特定的硬件和软件结合。 以上所述仅为本实用新型的优选实施例而已， 并不用于限制本实用新型， 对于本 领域的技术人员来说， 本实用新型可以有各种更改和变化。 凡在本实用新型的精神和 原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本实用新型的保护范围 之内。

Claims

权 利 要 求 书
1. 一种无线终端， 包括：
印制电路板 （21);
天线 （22)， 耦合在所述印制电路板 （21) 上， 设置为传输电磁波； 寄生单元（23)， 耦合在所述印制电路板（21)上， 设置为降低所述电磁波 的比吸收率 SAR峰值；
集总元件（24)， 耦合在所述寄生单元（23)上， 设置为调整所述寄生单元 (23) 的电流的幅值和相位。
2. 根据权利要求 1所述的无线终端， 其中， 所述集总元件 （24) 布置在所述寄生 单元 (23) 上。
3. 根据权利要求 1所述的无线终端， 其中， 所述集总元件 （24) 耦合在所述寄生 单元 (23) 与所述印制电路板 (21) 之间。
4. 根据权利要求 1所述的无线终端， 其中， 所述集总元件 （24) 包括以下至少之 一： 电容、 电感、 电阻。
5. 根据权利要求 1至 4中任一项所述的无线终端， 其中， 所述寄生单元 （23) 的 长度是所述电磁波的工作波长的四分之一。
6. 根据权利要求 1至 4中任一项所述的无线终端， 其中， 所述寄生单元 （23) 的 形状是单独的曲折线。
7. 根据权利要求 1至 4中任一项所述的无线终端， 其中， 所述寄生单元 （23) 的 形状是对称的曲折线。
8. 根据权利要求 1至 4中任一项所述的无线终端， 其中， 所述寄生单元 （23) 的 材料是金属。
PCT/CN2012/071356 2011-10-18 2012-02-20 无线终端 WO2012152103A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/352,287 US20140253411A1 (en) 2011-10-18 2012-02-20 Wireless terminal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201120396693.2 2011-10-18
CN2011203966932U CN202276339U (zh) 2011-10-18 2011-10-18 无线终端

Publications (1)

Publication Number Publication Date
WO2012152103A1 true WO2012152103A1 (zh) 2012-11-15

Family

ID=46196675

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/071356 WO2012152103A1 (zh) 2011-10-18 2012-02-20 无线终端

Country Status (3)

Country Link
US (1) US20140253411A1 (zh)
CN (1) CN202276339U (zh)
WO (1) WO2012152103A1 (zh)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2510318A (en) * 2012-10-24 2014-08-06 Microsoft Corp Antenna device with reduced specific absorption rate (SAR) characteristics
CN104241804A (zh) * 2013-06-20 2014-12-24 启碁科技股份有限公司 射频收发装置
US9769769B2 (en) 2014-06-30 2017-09-19 Microsoft Technology Licensing, Llc Detecting proximity using antenna feedback
US9785174B2 (en) 2014-10-03 2017-10-10 Microsoft Technology Licensing, Llc Predictive transmission power control for back-off
US9813997B2 (en) 2014-01-10 2017-11-07 Microsoft Technology Licensing, Llc Antenna coupling for sensing and dynamic transmission
US9871545B2 (en) 2014-12-05 2018-01-16 Microsoft Technology Licensing, Llc Selective specific absorption rate adjustment
US9871544B2 (en) 2013-05-29 2018-01-16 Microsoft Technology Licensing, Llc Specific absorption rate mitigation
US10013038B2 (en) 2016-01-05 2018-07-03 Microsoft Technology Licensing, Llc Dynamic antenna power control for multi-context device
US10044095B2 (en) 2014-01-10 2018-08-07 Microsoft Technology Licensing, Llc Radiating structure with integrated proximity sensing
US10224974B2 (en) 2017-03-31 2019-03-05 Microsoft Technology Licensing, Llc Proximity-independent SAR mitigation
US10461406B2 (en) 2017-01-23 2019-10-29 Microsoft Technology Licensing, Llc Loop antenna with integrated proximity sensing
US10893488B2 (en) 2013-06-14 2021-01-12 Microsoft Technology Licensing, Llc Radio frequency (RF) power back-off optimization for specific absorption rate (SAR) compliance

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103001005B (zh) * 2012-10-25 2014-12-17 中兴通讯股份有限公司 降低电磁辐射比吸收率的装置及移动终端
DE102014118036A1 (de) * 2014-12-05 2016-06-23 Astyx Gmbh Radarantenne und geeignetes Verfahren zum Beeinflussen der Abstrahlcharakteristik einer Radarantenne

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1509505A (zh) * 2002-02-27 2004-06-30 ���µ�����ҵ��ʽ���� 用于无线设备的天线装置
CN1977419A (zh) * 2004-09-28 2007-06-06 松下电器产业株式会社 无线电设备的天线装置和便携式无线电设备
CN102098070A (zh) * 2011-02-17 2011-06-15 上海安费诺永亿通讯电子有限公司 一种可以有效降低天线的hac/sar的通信终端
CN102208925A (zh) * 2010-03-30 2011-10-05 宏碁股份有限公司 低近场辐射移动通信装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6429818B1 (en) * 1998-01-16 2002-08-06 Tyco Electronics Logistics Ag Single or dual band parasitic antenna assembly
US6509882B2 (en) * 1999-12-14 2003-01-21 Tyco Electronics Logistics Ag Low SAR broadband antenna assembly
CN2476881Y (zh) * 2000-12-30 2002-02-13 深圳市中兴通讯股份有限公司 一种手机内置式平面天线
CN1734836B (zh) * 2004-08-10 2010-11-17 富士康(昆山)电脑接插件有限公司 天线
US7573427B2 (en) * 2007-06-21 2009-08-11 Research In Motion Limited Mobile wireless communications device including electrically conductive, electrically floating beam shaping elements and related methods
TWI508373B (zh) * 2011-04-27 2015-11-11 Chiun Mai Comm Systems Inc 多頻天線

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1509505A (zh) * 2002-02-27 2004-06-30 ���µ�����ҵ��ʽ���� 用于无线设备的天线装置
CN1977419A (zh) * 2004-09-28 2007-06-06 松下电器产业株式会社 无线电设备的天线装置和便携式无线电设备
CN102208925A (zh) * 2010-03-30 2011-10-05 宏碁股份有限公司 低近场辐射移动通信装置
CN102098070A (zh) * 2011-02-17 2011-06-15 上海安费诺永亿通讯电子有限公司 一种可以有效降低天线的hac/sar的通信终端

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2510318A (en) * 2012-10-24 2014-08-06 Microsoft Corp Antenna device with reduced specific absorption rate (SAR) characteristics
US9871544B2 (en) 2013-05-29 2018-01-16 Microsoft Technology Licensing, Llc Specific absorption rate mitigation
US10893488B2 (en) 2013-06-14 2021-01-12 Microsoft Technology Licensing, Llc Radio frequency (RF) power back-off optimization for specific absorption rate (SAR) compliance
CN104241804A (zh) * 2013-06-20 2014-12-24 启碁科技股份有限公司 射频收发装置
CN104241804B (zh) * 2013-06-20 2017-11-21 启碁科技股份有限公司 射频收发装置
US10044095B2 (en) 2014-01-10 2018-08-07 Microsoft Technology Licensing, Llc Radiating structure with integrated proximity sensing
US9813997B2 (en) 2014-01-10 2017-11-07 Microsoft Technology Licensing, Llc Antenna coupling for sensing and dynamic transmission
US10276922B2 (en) 2014-01-10 2019-04-30 Microsoft Technology Licensing, Llc Radiating structure with integrated proximity sensing
US9769769B2 (en) 2014-06-30 2017-09-19 Microsoft Technology Licensing, Llc Detecting proximity using antenna feedback
US9785174B2 (en) 2014-10-03 2017-10-10 Microsoft Technology Licensing, Llc Predictive transmission power control for back-off
US9871545B2 (en) 2014-12-05 2018-01-16 Microsoft Technology Licensing, Llc Selective specific absorption rate adjustment
US10013038B2 (en) 2016-01-05 2018-07-03 Microsoft Technology Licensing, Llc Dynamic antenna power control for multi-context device
US10461406B2 (en) 2017-01-23 2019-10-29 Microsoft Technology Licensing, Llc Loop antenna with integrated proximity sensing
US10224974B2 (en) 2017-03-31 2019-03-05 Microsoft Technology Licensing, Llc Proximity-independent SAR mitigation
US10924145B2 (en) 2017-03-31 2021-02-16 Microsoft Technology Licensing, Llc Proximity-independent SAR mitigation

Also Published As

Publication number Publication date
US20140253411A1 (en) 2014-09-11
CN202276339U (zh) 2012-06-13

Similar Documents

Publication Publication Date Title
WO2012152103A1 (zh) 无线终端
EP2405533B1 (en) Multiband antenna and method for an antenna to be capable of multiband operation
US9525212B2 (en) Feeding network, antenna, and dual-polarized antenna array feeding circuit
TWI663777B (zh) 天線結構
CN102510295B (zh) 降低sar峰值的无线终端及其降低sar峰值的方法
US9130260B2 (en) Antenna designing method and data card signal board of wireless terminal
US8618986B2 (en) Antenna designing method and data card single board of wireless terminal
CN109411883B (zh) 天线结构
US9559415B2 (en) Method and device for realizing specific absorption rate (SAR) control
JP5969821B2 (ja) アンテナ装置
EP2360782A2 (en) Antenna apparatus and radio terminal apparatus
CN103078174A (zh) 多频天线装置
CN103441330A (zh) 无线通信设备
CN102426656B (zh) 降低比吸收率的多天线手机数据卡及方法
CN101483268A (zh) 一种异面弯折双频ltcc天线
WO2014161331A1 (zh) 一种终端设备的天线装置
TWI571002B (zh) 天線裝置及應用其之通訊裝置
EP3261178B1 (en) Slot antenna
TW201814959A (zh) 天線系統及其天線結構
CN108011187B (zh) 一种天线系统及采用该系统的移动终端
TWI517492B (zh) 天線及無線通訊裝置
JP2013121004A (ja) アンテナ装置
CN201918505U (zh) 一种用于移动终端的多频小型内置天线
CN205231235U (zh) 整合传感组件电极与天线的结构
TWI589062B (zh) The structure of sensor and antenna is integrated

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12782385

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 14352287

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12782385

Country of ref document: EP

Kind code of ref document: A1