WO2020140169A1 - 一种分立天线系统 - Google Patents

一种分立天线系统 Download PDF

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Publication number
WO2020140169A1
WO2020140169A1 PCT/CN2018/125934 CN2018125934W WO2020140169A1 WO 2020140169 A1 WO2020140169 A1 WO 2020140169A1 CN 2018125934 W CN2018125934 W CN 2018125934W WO 2020140169 A1 WO2020140169 A1 WO 2020140169A1
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Prior art keywords
frame
antenna
metal
antenna group
feeding point
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PCT/CN2018/125934
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English (en)
French (fr)
Inventor
王松君
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瑞声精密制造科技(常州)有限公司
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Priority to PCT/CN2018/125934 priority Critical patent/WO2020140169A1/zh
Publication of WO2020140169A1 publication Critical patent/WO2020140169A1/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
    • 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
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system

Definitions

  • the invention relates to the technical field of wireless communication, in particular to a separately designed antenna system.
  • mobile phones also known as mobile phones and wireless phones
  • mobile phones are a kind of communication tool, which can be used in a large range and are easy to carry.
  • smart phones With the progress of society and the development of science and technology at any time, smart phones have almost spread to every household in our country and become an indispensable communication terminal for people.
  • wireless communication technology With the advancement of wireless communication technology, the demand for mobile phone functions is also increasing. Since the radio waves of wireless communication must be up-converted and carrier-waved in order to do effective multiplex transmission, it is necessary to perform these actions with the help of an antenna, which is an important element of mobile phones.
  • the mobile phone antenna of the prior art is usually provided with an antenna in the mobile phone, and one antenna includes all frequency bands of high, middle and low, which is difficult to design. Especially in a harsh environment with high requirements such as a full-screen mobile phone, it is not only difficult to design, but also difficult to debug, and has a narrow bandwidth.
  • the object of the present invention is to provide a discrete antenna system.
  • a discrete antenna system is applied to a mobile terminal.
  • the mobile terminal includes a metal frame and a bracket accommodated in the metal frame.
  • the discrete antenna system includes a first feeding point, a second feeding point, and a A first antenna group and a second antenna group fed by the first feeding point and the second feeding point, the first antenna group works in a high frequency band of LTE, and the second antenna group works in a low frequency of LTE Frequency band
  • the radiator of the first antenna group includes a first frame portion formed on the metal frame and a first metal trace portion provided on the bracket, the first metal trace portion and the first The frame portion is connected
  • the radiator of the second antenna group includes a second frame portion formed on the metal frame and a second metal wiring portion provided on the bracket, the second metal wiring portion and the The second frame part is connected.
  • the first feeding point is connected to the first metal trace portion, and the second feeding point is connected to the second metal trace portion.
  • the metal frame is provided with first breaks and second breaks arranged at intervals, and the first frame part and the second frame part are respectively provided on both sides of the first break And the second frame portion is interposed between the first fracture and the second fracture.
  • both the first metal trace portion and the second metal trace portion are disposed adjacent to the first break.
  • the first antenna group further includes a first connector connecting the first metal trace portion and the first frame portion
  • the second antenna group further includes a second metal trace
  • the second connecting piece of the line portion and the second frame portion, the distance between the second connecting piece and the first fracture is smaller than the distance between the second connecting piece and the second fracture.
  • the second antenna group further includes a variable capacitor, and the second feeding point is connected to the second metal trace through the variable capacitor.
  • the beneficial effect of the present invention is that the present invention separates the design of the low-frequency antenna and the high-frequency antenna to form separate antenna traces, thereby making the antenna bandwidth of the mobile phone wider and easier in design.
  • FIG. 2 is a structural diagram of a discrete antenna system of the present invention
  • FIG. 3 is a structural diagram of the stent of the present invention.
  • the present invention provides a discrete antenna system, which is applied to a mobile terminal 1.
  • the mobile terminal 1 is, for example, a full-screen mobile phone.
  • the mobile terminal 1 includes a body and a touch screen, and the body includes a case.
  • the housing contains some essential circuit components of the mobile phone, the position of the touch screen is set at the front position of the housing, the touch screen is connected to the housing, and the housing is equivalent to the back cover.
  • the shell is shaped like a square, usually formed by a rectangular back and four side walls to enclose, and then the four corners are rounded to facilitate the user to hold.
  • the mobile terminal 1 of the present invention includes a metal frame 11 and a bracket 12.
  • the bracket 12 is accommodated in the metal frame 11, and the metal frame 11 can be fitted on the side wall of the housing.
  • the discrete antenna system provided by the present invention includes a first feeding point 2, a second feeding point 3, a first antenna group 4 and a second antenna group 5, the first antenna group 4 is fed by the first feeding point 2,
  • the second antenna group 5 is fed by the second feeding point 3.
  • the first antenna group 4 works in the high-frequency band of LTE
  • the second antenna group 5 works in the low-frequency band of LTE, so that the high-frequency antenna and the low-frequency antenna are designed separately, instead of the traditional high-mid-low-band full-band antenna.
  • the overall method makes the bandwidth of the antenna wider and the design easier.
  • the first antenna group 4 and the second antenna group 5 respectively include corresponding radiators and matching circuits.
  • the radiator 41 of the first antenna group includes a first frame portion 411 formed on the metal frame 11 and a first metal wiring portion 412 provided on the bracket 12, the first metal wiring portion 412 and the The first frame portion 411 is connected.
  • the radiator 51 of the second antenna group includes a second frame portion 511 formed on the metal frame 11 and a second metal wiring portion 512 provided on the bracket 12. The two-metal wiring portion 512 is connected to the second frame portion 511.
  • the two feed points of the present invention are respectively connected to corresponding metal traces, that is, the first feed point 2 is connected to the first metal trace 412, and the second feed point 3 is connected to The second metal trace portion 512 is connected.
  • the metal frame 11 is provided with a first break 111 and a second break 112 that are arranged at intervals.
  • the first frame portion 411 and the second frame portion 511 are respectively disposed on both sides of the first fracture 111, and the second frame portion 511 is sandwiched between the first fracture 111 and the second fracture 112 between.
  • the first metal trace portion 412 and the second metal trace portion 512 are both disposed adjacent to the first break 111.
  • the second antenna group 5 further includes a variable capacitor, and the second feeding point 3 is connected to the second metal trace portion 512 through the variable capacitor.
  • the variable capacitor is further preferably a high-pass variable capacitor.
  • FIG. 4 For the reflection coefficient diagram of the discrete antenna system.
  • the curve marked I in the figure represents the reflection coefficient of the first antenna group, and the other curves represent the reflection coefficient of the second antenna.
  • the first antenna group 4 of the present invention further includes a first connector 42, the first metal trace portion 412 and the first frame portion 411 are connected by the first connector 42, and the second antenna group 5 further includes The second connector 52, the second metal trace portion 512 and the second frame portion 511 are connected by a second connector 52, the distance between the second connector 52 and the first break 111 is less than The distance between the second connector 52 and the second break 112.

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  • Support Of Aerials (AREA)
  • Telephone Set Structure (AREA)

Abstract

一种分立天线系统，应用于移动终端（1），所述移动终端（1）包括金属边框（11）和收容于所述金属边框（11）的支架（12），分立天线系统包括第一馈电点（2）、第二馈电点（3）以及分别由第一馈电点（2）和第二馈电点（3）馈电的第一天线组（4）和第二天线组（5），第一天线组（4）工作于LTE高频频段，第二天线组（5）工作于LTE中低频频段，第一天线组（4）的辐射体（41）包括成型于金属边框（11）的第一边框部（411）和设置于支架（12）的第一金属走线部（412），第一金属走线（412）与所述第一边框部（411）连接，第二天线组（5）的辐射体（51）包括成型于金属边框（11）的第二边框部（511）和设置于支架（12）的第二金属走线部（512），第二金属走线（512）与所述第二边框部（511）连接。本系统将中低频天线和高频天线分立设计，分别形成各自的天线走线，从而使得手机天线带宽更宽，在设计上也更加简单。

Description

一种分立天线系统 【技术领域】
本发明涉及一种无线通信技术领域，尤其涉及一种分立设计的天线系统。
【背景技术】
目前，手机又称移动电话、无线电话，是一种通讯工具，可以较大范围使用并且携带方便。随时社会的进步和科技的发展，智能手机已经几乎普及到我国家家户户中，成为人们不可或缺的通讯终端。随着无线通信技术的进补，人们对移动电话功能的需求也日益增加。由于无线通信的电波必须升频、载波，才可以做有效的多工传送，因此需要借助天线进行这些动作，天线是手机的重要元件。
现有技术的手机天线通常是在手机内设置一根天线，一根天线包含了高中低所有频段，设计难度大。尤其是在全面屏手机这种要求较高的恶劣环境下，不仅设计难，调试也困难，并且带宽窄。
因此有必要提供一种设计简便、更加带宽的天线。
【发明内容】
本发明的目的在于提供一种分立天线系统。
本发明的技术方案如下：
一种分立天线系统，应用于移动终端，所述移动终端包括金属边框和收容于所述金属边框的支架，所述分立天线系统包括第一馈电点、第二馈电点以及分别由所述第一馈电点和所述第二馈电点馈电的第一天线组和第二天线组，所述第一天线组工作于LTE高频频段，所述第二天线组工作于LTE中低频频段，所述第一天线组的辐射体包括成型于所述金属边框的第一边框部和设置于所述支架的第一金属走线部，所述第一金属走线部与所 述第一边框部连接，所述第二天线组的辐射体包括成型于所述金属边框的第二边框部和设置于所述支架的第二金属走线部，所述第二金属走线部与所述第二边框部连接。
作为一种改进，所述第一馈电点与所述第一金属走线部连接，所述第二馈电点与所述第二金属走线部连接。
作为一种改进，所述金属边框上设有间隔设置的第一断缝和第二断缝，所述第一边框部和所述第二边框部分别设于所述第一断缝的两侧，且所述第二边框部夹设于所述第一断缝和所述第二断缝之间。
作为一种改进，所述第一金属走线部和所述第二金属走线部均邻近所述第一断缝设置。
作为一种改进，所述第一天线组还包括连接所述第一金属走线部和所述第一边框部的第一连接件，所述第二天线组还包括连接所述第二金属走线部和所述第二边框部的第二连接件，所述第二连接件与所述第一断缝的距离小于所述第二连接件与所述第二断缝的距离。
作为一种改进，所述第二天线组还包括可变电容器，所述第二馈电点通过所述可变电容器与所述第二金属走线部连接。
本发明的有益效果在于：本发明将中低频天线和高频天线分立设计，分别形成各自的天线走线，从而使得手机天线带宽更宽，在设计上也更加容易简单。
【附图说明】
图1为本发明的金属边框的结构示意图；
图2为本发明的分立天线系统的结构图；
图3为本发明的支架的结构图；
图4为本发明的分立天线系统的反射系数曲线图。
【具体实施方式】
下面结合附图和实施方式对本发明作进一步说明。
如图1至图3所述，本发明提供一种分立天线系统，应用于移动终端 1，移动终端1例如为全面屏手机，移动终端1包括有机身和触摸屏，机身包括了壳体，壳体收容有一些手机必备的电路器件，触摸屏的位置设置在壳体的前置位置，触摸屏与壳体连接，壳体相当于后盖。壳体为类似方形的形状，通常是形状为长方形的背面加上四侧壁围接构成，之后四个边角进行圆角设计以方便用户拿握。
本发明的移动终端1包括了金属边框11和支架12，支架12被收容于金属边框11内，金属边框11可以贴合设置在壳体的侧壁。
本发明提供的分立天线系统包括有第一馈电点2、第二馈电点3、第一天线组4和第二天线组5，第一天线组4由第一馈电点2馈电，第二天线组5由第二馈电点3馈电。其中，第一天线组4工作于LTE高频频段，所述第二天线组5工作于LTE中低频频段，从而将高频天线和低频天线分立设计，取代了传统将高中低全频段天线设置为整体的方式，使得天线的带宽更宽，设计也更加简便。第一天线组4和第二天线组5分别包括对应的辐射体和匹配电路。第一天线组的辐射体41包括成型于所述金属边框11的第一边框部411和设置于所述支架12的第一金属走线部412，所述第一金属走线部412与所述第一边框部411连接，所述第二天线组的辐射体51包括成型于所述金属边框11的第二边框部511和设置于所述支架12的第二金属走线部512，所述第二金属走线部512与所述第二边框部511连接。
更为具体的，本发明的两个馈电点分别与对应的金属走线部连接，也就是第一馈电点2与第一金属走线部412连接，所述第二馈电点3与所述第二金属走线部512连接。并且在金属边框11上设有间隔设置的第一断缝111和第二断缝112。其中第一边框部411和第二边框部511分别设置于第 一断缝111的两侧，且所述第二边框部511夹设于所述第一断缝111和所述第二断缝112之间。第一金属走线部412和第二金属走线部512均邻近所述第一断缝111设置。
所述第二天线组5还包括有可变电容器，第二馈电点3通过所述可变电容器与所述第二金属走线部512连接。其中该可变电容器进一步优选为高通可变电容器。
分立天线系统的反射系数图请参见图4，图中标记为I的曲线表示第一天线组的反射系数，其他曲线表示第二天线的反射系数。
本发明的第一天线组4还包括第一连接件42，所述第一金属走线部412和所述第一边框部411通过第一连接件42连接，所述第二天线组5还包括第二连接件52，所述第二金属走线部512和所述第二边框部511通过第二连接件52连接，所述第二连接件52与所述第一断缝111的距离小于所述第二连接件52与所述第二断缝112的距离。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (6)

  1. 一种分立天线系统，应用于移动终端，所述移动终端包括金属边框和收容于所述金属边框的支架，其特征在于，所述分立天线系统包括第一馈电点、第二馈电点以及分别由所述第一馈电点和所述第二馈电点馈电的第一天线组和第二天线组，所述第一天线组工作于LTE高频频段，所述第二天线组工作于LTE中低频频段，所述第一天线组的辐射体包括成型于所述金属边框的第一边框部和设置于所述支架的第一金属走线部，所述第一金属走线部与所述第一边框部连接，所述第二天线组的辐射体包括成型于所述金属边框的第二边框部和设置于所述支架的第二金属走线部，所述第二金属走线部与所述第二边框部连接。
  2. 根据权利要求1所述的分立天线系统，其特征在于：所述第一馈电点与所述第一金属走线部连接，所述第二馈电点与所述第二金属走线部连接。
  3. 根据权利要求2所述的分立天线系统，其特征在于：所述金属边框上设有间隔设置的第一断缝和第二断缝，所述第一边框部和所述第二边框部分别设于所述第一断缝的两侧，且所述第二边框部夹设于所述第一断缝和所述第二断缝之间。
  4. 根据权利要求3所述的分立天线系统，其特征在于：所述第一金属走线部和所述第二金属走线部均邻近所述第一断缝设置。
  5. 根据权利要求3所述的分立天线系统，其特征在于：所述第一天线组还包括连接所述第一金属走线部和所述第一边框部的第一连接件，所述第二天线组还包括连接所述第二金属走线部和所述第二边框部的第二连接件，所述第二连接件与所述第一断缝的距离小于所述第二连接件与所述第二断缝的距离。
  6. 根据权利要求1所述的分立天线系统，其特征在于：所述第二天线组还包括可变电容器，所述第二馈电点通过所述可变电容器与所述第二金属走线部连接。
PCT/CN2018/125934 2018-12-30 2018-12-30 一种分立天线系统 WO2020140169A1 (zh)

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CN108417966A (zh) * 2018-01-25 2018-08-17 瑞声科技(新加坡)有限公司 一种天线系统及移动终端
CN108511906A (zh) * 2018-04-19 2018-09-07 Oppo广东移动通信有限公司 天线系统和移动终端
CN109088152A (zh) * 2018-08-03 2018-12-25 瑞声科技（南京）有限公司 天线系统及移动终端

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