WO2020063177A1 - 一种提升移动终端天线效率的方法、装置、设备及存储介质 - Google Patents

一种提升移动终端天线效率的方法、装置、设备及存储介质 Download PDF

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Publication number
WO2020063177A1
WO2020063177A1 PCT/CN2019/100708 CN2019100708W WO2020063177A1 WO 2020063177 A1 WO2020063177 A1 WO 2020063177A1 CN 2019100708 W CN2019100708 W CN 2019100708W WO 2020063177 A1 WO2020063177 A1 WO 2020063177A1
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Prior art keywords
antenna
mobile terminal
efficiency
metal
ground plane
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PCT/CN2019/100708
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English (en)
French (fr)
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洪磊
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中兴通讯股份有限公司
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Publication of WO2020063177A1 publication Critical patent/WO2020063177A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the technical field of mobile terminals, and in particular, to a method, a device, a device, and a storage medium for improving the efficiency of a mobile terminal antenna.
  • the communication frequency bands are increasing, and the requirements of terminals for antennas are becoming higher and higher.
  • the low frequency needs to support a bandwidth of 699MHz to 960MHz, and the high frequency needs to support a bandwidth of 1710MHz to 2700Mhz.
  • the existing technology for improving the antenna bandwidth is to increase the tuning switch, add an antenna switch at the ground feed point of the antenna, or add a variable capacitor at the signal feed point of the antenna, and perform impedance tuning to achieve the switching frequency and increase the bandwidth.
  • the disadvantage of this method is that the amplitude of tuning is limited. Even if impedance tuning is added to some projects, it still fails to meet the requirements of the index, and the antenna switch or variable capacitor has certain losses. At the same time that the bandwidth is expanded, The efficiency of the antenna will be lost.
  • the antenna switch has a certain withstand voltage value. When the antenna is in operation, the withstand voltage value of the antenna switch may be exceeded, resulting in the switch being unable to work.
  • a method for improving the efficiency of a mobile terminal antenna includes: a metal device, and the metal device is arranged close to the mobile terminal antenna; and a control switch is used to switch the metal device according to the current operating frequency of the antenna Access location to the main ground plane of the antenna.
  • a device for improving antenna efficiency of a mobile terminal includes: a processor and a memory coupled to the processor; and the memory stores a memory operable on the processor.
  • a program for improving the efficiency of a mobile terminal antenna the steps of implementing the method for improving the efficiency of a mobile terminal antenna according to the embodiments of the present application when the program for improving the efficiency of a mobile terminal antenna is executed by the processor.
  • a computer storage medium provided according to an embodiment of the present application, the storage medium stores a program for improving antenna efficiency of a mobile terminal, and the program for improving antenna efficiency of a mobile terminal implements all the functions provided in the embodiment of the application when executed by a processor. The steps of the method for improving the antenna efficiency of a mobile terminal are described.
  • FIG. 1 is a flowchart of a method for improving antenna efficiency of a mobile terminal according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of a device for improving antenna efficiency of a mobile terminal according to an embodiment of the present application
  • FIG. 5 is a schematic structural diagram of a metal device completely connected to a main ground plane according to an embodiment of the present application
  • FIG. 6 is a schematic structural diagram of a metal device completely disconnected from a main ground plane according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a connection between a metal device and a left side of a main ground plane according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a connection between a metal device and a right side of a main ground plane according to an embodiment of the present application;
  • FIG. 9 is a passive standing wave diagram of four types of connections between a metal device and a main ground plane according to an embodiment of the present application.
  • This application is applied to the R & D and debugging stage of the built-in antenna of the terminal, and is used to expand the bandwidth of the antenna, including any terminal wireless products, including IoT products with wireless functions that will appear in the future. Good antenna performance.
  • Step S101 setting the metal device close to the mobile terminal antenna
  • Step S102 According to the current operating frequency of the antenna, control the switch to switch the access position of the metal device and the main ground plane of the antenna.
  • the metal device is disposed near a position where the antenna voltage of the mobile terminal is the highest.
  • the metal device includes at least two access points connected to a main ground plane of the antenna, and the switch controls the at least one access point and the antenna according to a current operating frequency of the antenna.
  • the main ground plane of the antenna is switched on.
  • the metal device includes one of the following: a USB metal case, a speaker metal case, a motor, and a MIC metal case.
  • the USB metal case when the metal device is a USB metal case, the USB metal case includes two access points, where a first access point is connected in series with a nanohenry level inductor, A second access point is connected in series with a zero-ohm resistor, and the switch controls the first access point and the second access point to be turned on or off from the main ground plane.
  • FIG. 2 is a schematic diagram of a device for improving the efficiency of a mobile terminal antenna according to an embodiment of the present application.
  • the device includes: a metal device 201 disposed near the antenna of the mobile terminal; A switch 202 between the metal devices is used to switch an access position between the metal device and a main ground plane of the antenna.
  • the metal device is disposed near a position where the antenna voltage of the mobile terminal is the largest.
  • the metal device includes at least two access points connected to a main ground plane of the antenna, and the switch controls the at least one access point and the antenna according to a current operating frequency of the antenna.
  • the main ground plane of the antenna is switched on.
  • a device for improving antenna efficiency of a mobile terminal includes: a processor and a memory coupled to the processor; and the memory stores a memory operable on the processor.
  • a program for improving the efficiency of a mobile terminal antenna the steps of implementing the method for improving the efficiency of a mobile terminal antenna according to the embodiments of the present application when the program for improving the efficiency of a mobile terminal antenna is executed by the processor.
  • a computer storage medium provided according to an embodiment of the present application, the storage medium stores a program for improving antenna efficiency of a mobile terminal, and the program for improving antenna efficiency of a mobile terminal implements all the functions provided in the embodiment of the application when executed by a processor. The steps of the method for improving the antenna efficiency of a mobile terminal are described.
  • the embodiment of the present application is mainly applied to an item in which a built-in antenna of a terminal has a metal device under the antenna.
  • metal devices include, but are not limited to: speakers, motors, USB, headphone holders, MICs, earphones, etc.
  • These metal devices occupy the antenna's headroom and affect the antenna.
  • Performance a tuning switch is added to the main ground plane near the antenna path.
  • the tuning switch is mainly used to switch the topological structure of the ground plane, which is equivalent to changing the environment of the antenna and thus changing the current distribution.
  • This application is mainly applied to terminal products.
  • metal devices near the antenna that can increase the tuning circuit, as shown in Figure 4, including: antenna, ground plane (main ground plane), metal device, and two connections between the metal device and the ground plane. point.
  • the embodiments of the present application are not limited to the structure and antenna form shown in the figure, and any metal device near the antenna area can be used for tuning.
  • these metal devices can be effectively used, and a switch is added between the metal device and the main ground plane to switch between the on and off states and change the current distribution on the metal device. Therefore, the current distribution of the antenna is affected, the purpose of switching resonance and expanding the bandwidth is achieved.
  • the metal device is completely connected to the ground plane (All), as shown in Figure 5;
  • the metal device is completely disconnected from the ground plane, as shown in Figure 6;
  • the metal device is connected to the left side of the ground plane (Left), as shown in Figure 7;
  • the metal device is connected to the right of the ground plane (Right), as shown in Figure 8.
  • Ground plane switch large switching range, not easy to control, low loss, suitable for coarse adjustment.
  • the ground plane uses USB as the switching metal device. It is very close to the antenna area and can be switched by adding a switching circuit on the daughter board. Lead two wires to the left and right USB sockets. Leaving the matching bit to ground is to change the on and off of the two matching bits to adjust the resonance of the antenna. Due to the USB transmission rate requirements and EMC test requirements, it cannot be completely disconnected, so the effect of conducting under low frequency signals and disconnecting under high frequency signals is achieved by stringing 100nH.
  • the experimental results are as follows:
  • Tr1 string two 0 ohms (on)
  • Tr2 two 100nH (open)
  • Tr3 left string 100nH (off), right string 0 ohm (on)
  • Tr4 0 ohms on the left and 100 nH on the right (open)
  • Tr1 and Tr3 in the vicinity of 900MHZ are selected, and they are obviously shifted to low frequencies.
  • the comparison of the test antenna efficiency is as follows:
  • the metal devices near the antenna have a certain effect on the resonance and bandwidth of the antenna.
  • a switch is added between the metal device and the main ground plane. It is used to switch the two states of on and off, thereby changing the loading effect of this metal device on the antenna, affecting the current distribution, achieving the purpose of switching resonance and expanding the bandwidth.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

本申请公开了一种提升移动终端天线效率的方法、装置、设备及存储介质，涉及移动终端技术领域，其方法包括：将所述金属器件靠近所述移动终端天线设置(S101)；根据所述天线当前工作频率，控制开关切换所述金属器件与天线的主地平面的接入位置(S102)。

Description

一种提升移动终端天线效率的方法、装置、设备及存储介质
交叉引用
本申请引用于2018年9月25日递交的名称为“一种提升移动终端天线效率的方法、装置、设备及存储介质”的第201811118569.2号中国专利申请，其通过引用被全部并入本申请。
技术领域
本申请涉及移动终端技术领域，特别涉及一种提升移动终端天线效率的方法、装置、设备及存储介质。
背景技术
当前4G以及未来5G的通讯环境下，通讯频段越来越多，终端对天线的要求也越来越高，低频需要支持699MHz～960MHz的带宽，高频需要支持1710MHz～2700Mhz的带宽，在手机越做越薄，屏幕越做越大的环境下，能够给到天线的净空越来越少，常规的调试方法很难满足目前需求的带宽。
现有的改善天线带宽的技术是增加调谐开关，在天线的地馈点增加天线开关或者在天线的信号馈点增加可变电容，进行阻抗调谐，从而达到切换频点，增加带宽的作用，但是这种办法的缺点在于调谐的幅度有一定的限制，部分项目即使加上了阻抗调谐的手段，但是依旧无法满足指标要求，并且天线开关或者可变电容都有一定的损耗，扩大带宽的同时，天线的效率会有一定的损失。且天线开关有一定的耐压值，天线在工作时，有可能超过天线开关的耐压值，导致开关无法工作。
发明内容
根据本申请实施例提供的方案解决了目前终端天线带宽不足、天线调谐开关所存在有源损耗和耐压值过载的问题。
根据本申请实施例提供的一种提升移动终端天线效率的方法，包括：金属器件，将所述金属器件靠近所述移动终端天线设置；根据所述天线当前工作频率，控制开关切换所述金属器件与天线的主地平面的接入位置。
根据本申请实施例提供的一种提升移动终端天线效率的装置，包括：靠近所述移动终端天线设置的金属器件；设置在所述天线的主地平面与所述金属器件之间的开关，用于切换所述金属器件与天线的主地平面的接入位置。
根据本申请实施例提供的一种提升移动终端天线效率的设备，所述设备包括：处理器，以及与所述处理器耦接的存储器；所述存储器上存储有可在所述处理器上运行的提升移动终端天线效率的程序，所述提升移动终端天线效率的程序被所述处理器执行时实现根据本申请实施例提供的所述的提升移动终端天线效率的方法的步骤。
根据本申请实施例提供的一种计算机存储介质，所述存储介质存储有提升移动终端天线效率的程序，所述提升移动终端天线效率的程序被处理器执行时实现根据本申请实施例提供的所述的提升移动终端天线效率的方法的步骤。
附图说明
图1是本申请实施例提供的一种提升移动终端天线效率的方法流程图；
图2是本申请实施例提供的一种提升移动终端天线效率的装置示意图；
图3是本申请实施例提供的金属器件与主地平面的连接电路 示意图；
图4是本申请实施例提供的金属器件与主地平面的结构示意图；
图5是本申请实施例提供的金属器件与主地平面完全连接的结构示意图；
图6是本申请实施例提供的金属器件与主地平面完全不连接的结构示意图；
图7是本申请实施例提供的金属器件与主地平面左侧连接的结构示意图；
图8是本申请实施例提供的金属器件与主地平面右侧连接的结构示意图；
图9是本申请实施例提供的金属器件与主地平面的四种连接的无源驻波图。
具体实施例
以下结合附图对本申请的优选实施例进行详细说明，应当理解，以下所说明的优选实施例仅用于说明和解释本申请，并不用于限定本申请。
本申请应用于终端内置天线的研发调试阶段，用于拓展天线带宽，包括任何终端无线产品，包括以后会出现的带有无线功能的物联网产品，且能够在较差的净空环境下调试出较好的天线性能。
图1是本申请实施例提供的一种提升移动终端天线效率的方法流程图，如图1所示，包括：金属器件，
步骤S101：将所述金属器件靠近所述移动终端天线设置；
步骤S102：根据所述天线当前工作频率，控制开关切换所述金属器件与天线的主地平面的接入位置。
在一实施例中，将所述金属器件靠近所述移动终端天线电压最 大的位置设置。
在一实施例中，所述金属器件至少包括两个与所述天线的主地平面接入的接入点，所述开关根据所述天线的当前工作频率控制其中所述至少一个接入点与所述天线的主地平面接通。
在一实施例中，所述金属器件包括以下之一：USB金属壳体、喇叭金属壳体，马达，MIC金属壳体。
在一实施例中，如图3所示，当所述金属器件为USB金属壳体，所述USB金属壳体包括两个接入点，其中第一接入点串联一纳亨级别的电感，第二接入点串联一零欧姆电阻，所述开关控制所述第一接入点和第二接入点与所述主地平面接通或者断开。
图2是本申请实施例提供的一种提升移动终端天线效率的装置示意图，如图2所示，包括：靠近所述移动终端天线设置的金属器件201；设置在所述天线的主地平面与所述金属器件之间的开关202，用于切换所述金属器件与天线的主地平面的接入位置。
在一实施例中，将所述金属器件靠近所述移动终端天线电压最大的位置设置。
在一实施例中，所述金属器件至少包括两个与所述天线的主地平面接入的接入点，所述开关根据所述天线的当前工作频率控制其中所述至少一个接入点与所述天线的主地平面接通。
根据本申请实施例提供的一种提升移动终端天线效率的设备，所述设备包括：处理器，以及与所述处理器耦接的存储器；所述存储器上存储有可在所述处理器上运行的提升移动终端天线效率的程序，所述提升移动终端天线效率的程序被所述处理器执行时实现根据本申请实施例提供的所述的提升移动终端天线效率的方法的步骤。
根据本申请实施例提供的一种计算机存储介质，所述存储介质存储有提升移动终端天线效率的程序，所述提升移动终端天线效率的程序被处理器执行时实现根据本申请实施例提供的所述的提升移动终端天线效率的方法的步骤。
本申请实施例主要应用于终端内置天线，天线下方有金属器件的项目。目前主流的终端天线附近都有很多金属器件(金属器件包括但不限于：例如喇叭、马达、USB、耳机座、MIC、听筒等等)，这些金属器件占据了天线的净空环境，同时会影响天线的性能。本申请是在天线通路附近的主地平面上加调谐开关，调谐开关主要是用来切换地平面的拓扑结构，相当于改变了天线的环境，从而达到改变电流分布的作用。
本申请主要应用于终端产品，天线附近有可增加调谐电路的金属器件，如图4所示，包括：天线、地平面(主地平面)，金属器件，以及金属器件与地平面的两个连接点。此外本申请实施例不限于图示的这种结构和天线形式，任何靠近天线区域的金属器件都可以用来进行调谐。
根据本申请实施例提供的方案，可以有效的利用这些金属器件，在金属器件和主地平面之间加上开关，用来切换导通和断开这两种状态，改变金属器件上的电流分布，从而影响天线的电流分布，达到切换谐振，扩大带宽的目的。
下面结合图5至图9对本申请实施例进行仿真演示：
控制开关，使其在断开和导通之间切换，模拟四种开关状态如下：
金属器件与地平面完全连接(All on)，如图5所示；
金属器件与地平面完全不接(All off)，如图6所示；
金属器件与地平面左侧连接(Left)，如图7所示；
金属器件与地平面右侧连接(Right)，如图8所示。
为上述四种连接状态下的无源驻波图，从图9中可以看到低频谐振(0.8GHz附近)和高频谐振(3GHz附近)都产生了谐振点偏移，其中3G附近的偏移程度较大，如果单单一种状态的谐振高频覆盖很窄，那么就可以利用这四种状态进行开关的切换，使得高频3GHz～3.6GHz的全覆盖。
电流分析：选取了高频距离最远的两个点(频点3(Right模式，3.0147GHz)和频点6(All off模式，3.5627GHz))进行电流对比分析，分析结果发现，Right模式金属器件右侧的接地脚为电流最大点，而All off模式由于金属器件无接地点，右侧相同的位置为电流最小点，两种状态的电流分布差别很大，导致了谐振频点的偏移。
本申请实施例在实际调试中，环境会更加复杂，可以灵活运用这几种状态(根据可加开关的数量，不局限于以上的四种状态)，在需要的频段中进行切换，也可以和主通路的开关配合使用，相互补缺。
地平面开关：切换幅度大，不容易控制，损耗小，适合粗调。
传统主通路开关：切换幅度小，好控制，损耗大，并且切换幅度越大，带宽损失越多，适合微调。
下面以实际项目为测试实验，地平面利用了USB作为切换的金属器件，它非常靠近天线区域，并且可以在子板上增加开关电路进行切换，在USB左右两个座子引两条线，预留匹配位到地，就是改变两个匹配位的导通和断开，来调节天线的谐振。由于USB的传输速率要求以及EMC测试要求，不能完全断开，所以通过串100nH来实现在低频信号下导通，在高频信号下断开的效果。实验结果如下：
Tr1:串两个0欧姆(导通)
Tr2:串两个100nH(断开)
Tr3:左边串100nH(断开)，右边串0欧姆(导通)
Tr4:左边串0欧姆，右边串100nH(断开)
挑选了Tr1和Tr3在900MHZ附近的谐振，明显往低频偏移，测试天线效率对比如下：
Figure PCTCN2019100708-appb-000001
Figure PCTCN2019100708-appb-000002
可以看到效率也往低频做了偏移，824～870频段的效率得到很明显的提升。所以可以在左侧地脚增加调谐开关(开关)，只需要一个单刀双掷的，用于切换0欧姆和100nH，如果天线使用B8(880～960)频段，开关打到0欧姆，如果天线使用B5(824～870)频段，开关打到100nH。
综上所述：1.可以和地馈脚的调谐开关配合使用，切换更加灵活，带宽也更宽。基本能覆盖目前主流要求的699MHz～960MHz。2.金属器件不限于USB，任何在天线附近，可以做浮地处理的金属器件都可以作调谐处理，比如说喇叭，马达，MIC等等。通过开关去切换金属器件与接地平面的连接方式，从而与天线产生不同的耦合，改变天线谐振点，达到提升效率的目的。3.需要根据实际调试情况，可以在几种状态中灵活切换。
根据本申请实施例提供的方案，天线附近的金属器件对天线的谐振和带宽都有一定的影响，通过合理利用金属器件对天线的加载效应，在金属器件和主地平面之间加上开关，用来切换导通和断开这两种状态，从而改变此金属器件对天线的加载效应，影响电流分布，达到切换谐振，扩大带宽的目的。
尽管上文对本申请进行了详细说明，但是本申请不限于此，本技术领域技术人员可以根据本申请的原理进行各种修改。因此，凡按照本申请原理所作的修改，都应当理解为落入本申请的保护范围。

Claims (10)

  1. 一种提升移动终端天线效率的方法，其特征在于，包括：金属器件，
    将所述金属器件靠近所述移动终端天线设置；
    根据所述天线当前工作频率，控制开关切换所述金属器件与天线的主地平面的接入位置。
  2. 根据权利要求1所述的方法，其特征在于，将所述金属器件靠近所述移动终端天线电压最大的位置设置。
  3. 根据权利要求1所述的方法，其特征在于，所述金属器件至少包括两个与所述天线的主地平面接入的接入点，所述开关根据所述天线的当前工作频率控制其中所述至少一个接入点与所述天线的主地平面接通。
  4. 根据权利要求1所述的方法，其特征在于，所述金属器件包括以下之一：USB金属壳体、喇叭金属壳体，马达，MIC金属壳体。
  5. 根据权利要求1所述的方法，其特征在于，所述金属器件为USB金属壳体，所述USB金属壳体包括两个接入点，其中第一接入点串联纳亨级别的电感，第二接入点串联零欧姆电阻，所述开关控制所述第一接入点和第二接入点与所述主地平面接通或者断开。
  6. 一种提升移动终端天线效率的装置，其特征在于，包括：
    靠近所述移动终端天线设置的金属器件；
    设置在所述天线的主地平面与所述金属器件之间的开关，用于切换所述金属器件与天线的主地平面的接入位置。
  7. 根据权利要求6所述的装置，其特征在于，将所述金属器件靠近所述移动终端天线电压最大的位置设置。
  8. 根据权利要求6所述的装置，其特征在于，所述金属器件至少包括两个与所述天线的主地平面接入的接入点，所述开关根据所述 天线的当前工作频率控制其中所述至少一个接入点与所述天线的主地平面接通。
  9. 一种提升移动终端天线效率的设备，其特征在于，所述设备包括：处理器，以及与所述处理器耦接的存储器；所述存储器上存储有可在所述处理器上运行的提升移动终端天线效率的程序，所述提升移动终端天线效率的程序被所述处理器执行时实现如权利要求1至5中任一项所述的提升移动终端天线效率的方法的步骤。
  10. 一种计算机存储介质，其特征在于，所述存储介质存储有提升移动终端天线效率的程序，所述提升移动终端天线效率的程序被处理器执行时实现如权利要求1至5中任一项所述的提升移动终端天线效率的方法的步骤。
PCT/CN2019/100708 2018-09-25 2019-08-15 一种提升移动终端天线效率的方法、装置、设备及存储介质 WO2020063177A1 (zh)

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