WO2020024675A1 - 回路天线系统及移动终端 - Google Patents

回路天线系统及移动终端 Download PDF

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Publication number
WO2020024675A1
WO2020024675A1 PCT/CN2019/088242 CN2019088242W WO2020024675A1 WO 2020024675 A1 WO2020024675 A1 WO 2020024675A1 CN 2019088242 W CN2019088242 W CN 2019088242W WO 2020024675 A1 WO2020024675 A1 WO 2020024675A1
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WO
WIPO (PCT)
Prior art keywords
loop antenna
gsm900
antenna system
plastic back
frequency band
Prior art date
Application number
PCT/CN2019/088242
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English (en)
French (fr)
Inventor
杭明俊
朱玉飞
史大为
董凯
Original Assignee
瑞声声学科技(深圳)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 瑞声声学科技(深圳)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2020024675A1 publication Critical patent/WO2020024675A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • 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
    • 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
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/328—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors between a radiating element and ground
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems

Definitions

  • the utility model relates to the technical field of antennas, in particular to a loop antenna system and a mobile terminal.
  • mobile terminals such as mobile phones
  • have a larger and larger screen resulting in a smaller and smaller headroom area inside the mobile terminal, and an increasingly harsh antenna environment.
  • Multi-band addition is the main problem currently facing antenna debugging.
  • Low headroom areas The antenna's low-frequency bandwidth is narrow and cannot meet the performance index requirements.
  • the environment of the notch screen diversity area is poor and cannot be switched through DPDT.
  • the purpose of the utility model is to provide a loop antenna system, which can effectively improve the antenna performance under the condition of a small headroom.
  • a loop antenna system includes a plastic back shell and a main board housed in the plastic back shell.
  • the loop antenna system includes a loop antenna provided on a surface of the plastic back shell.
  • the main board is provided with a ground foot switch and a feeding point connected to the loop antenna.
  • the loop antenna includes at least two working states. In one of the working states, the loop antenna It works in GSM900TX frequency band. In another working state, the loop antenna works in GSM900 RX frequency band.
  • a clearance area is provided on one end of the motherboard corresponding to the loop antenna, and the width of the clearance area is 2.73 mm.
  • the loop antenna is disposed on the plastic back shell by using a LDS technology molding process.
  • the utility model also provides a mobile terminal including the loop antenna system.
  • a loop antenna system provided by the present utility model has the following beneficial effects: by setting a ground foot switch, the loop antenna includes at least two working states, and in one of the working states, the loop antenna works In the GSM900TX frequency band, in another working state, the loop antenna works in the GSM900 RX frequency band, thereby realizing the low-frequency GSM900 TX and GSM900 RX performance requirements.
  • FIG. 1 is a perspective structural view of a loop antenna system of the present invention
  • FIG. 2 is an exploded perspective view of a loop antenna system of the present invention
  • FIG. 3 is a schematic diagram of a main board of a loop antenna system of the present invention.
  • FIG. 4 is a return loss diagram of the loop antenna system of the present invention when the GSM900 TX and GSM900 RX are in the same path;
  • FIG. 5 is a return loss diagram of the loop antenna system of the present invention in the GSM900 TX path;
  • FIG. 6 is a return loss diagram of the loop antenna system of the present invention in the GSM900 RX path;
  • FIG. 7 is a comparison diagram of the test efficiency of the loop antenna system of the present invention before and after the GSM900 TX and GSM900 RX split paths.
  • an embodiment of the present invention provides a loop antenna system 100 including a plastic back shell 1 and a main board 2 housed in the plastic back shell 1.
  • One end of the main board 2 is provided with a clearance area.
  • the headroom area 20 is composed of two sections of headroom spaced apart from each other.
  • One of the headroom areas 20 has a length of 27.61mm and a width of 2.73mm; The length is 29.38mm and the height is 2.73mm.
  • the width of the headroom 20 refers to the distance from the system ground 23 on the motherboard 2 to the edge of the motherboard 2.
  • the loop antenna system 100 includes a loop antenna 3 formed on the surface of the plastic back shell 1 using LDS technology and corresponding to the headroom.
  • the LDS technology molding process can effectively avoid the color difference at the break of the traditional metal ring scheme.
  • the working frequency band of the loop antenna 3 is the GSM 900 frequency band.
  • the main board 2 is provided with a ground switch 21 and a feeding point 22 connected to the loop antenna 3.
  • the main board 2 is also installed with other electronic components, such as a speaker, a microphone, a USB interface, and a motor. Not labeled one by one on the figure.
  • the loop antenna 3 is connected to the ground foot switch 21 and the feeding point 22.
  • low-frequency GSM900TX and GSM900RX are grounded through two paths, thereby ensuring that GSM900TX and GSM900RX can meet performance requirements. That is, by adjusting the foot switch 21, the loop antenna 3 includes at least two working states. In one of the working states, the loop antenna works in the GSM900TX frequency band, and in the other working state, the loop antenna The antenna works in the GSM900 RX band.
  • the utility model also provides a mobile terminal including a notch screen, that is, a special-shaped cutting screen, and the loop antenna system 100 described above.
  • a loop antenna system provided by the present utility model has the following beneficial effects: by setting a ground foot switch, the loop antenna includes at least two working states, and in one of the working states, the loop antenna works In the GSM900TX frequency band, in another working state, the loop antenna works in the GSM900 RX frequency band, thereby realizing the low-frequency GSM900 TX and GSM900 RX performance requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Telephone Set Structure (AREA)

Abstract

本实用新型提供了一种回路天线系统，包括塑料背壳和收容于所述塑料背壳内的主板，所述回路天线系统包括设置于所述塑料背壳表面上的回路天线，所述主板上设有与所述回路天线连接的地脚开关和馈电点，通过调节所述地脚开关，所述回路天线在其一个工作状态中，工作于GSM900TX频段，在另一个工作状态中工作于GSM900 RX频段。与相关技术相比，本实用新型提供的一种回路天线系统具有如下有益效果：通过设置地脚开关，所述回路天线在其一个工作状态中，工作于GSM900TX频段，在另一个工作状态中工作于GSM900 RX频段，进而实现低频GSM900 TX，GSM900 RX性能要求。

Description

回路天线系统及移动终端 技术领域
本实用新型涉及天线技术领域，尤其涉及一种回路天线系统及移动终端。
 背景技术
随着通讯技术的不断发展，人们对移动终端的需求越来越多样化，因此，对移动终端内的天线的要求也越来越高。
目前，移动终端，例如手机，屏幕占比越来越大，导致移动终端内部的净空区越来越小，天线环境愈发恶劣，多频段附加是目前天线调试面临的主要问题；低净空区域，天线低频带宽窄，无法满足性能指标要求，notch屏分集区域环境较差无法通过DPDT切换。
因此，有必要提供一种新型的回路天线系统以解决上述问题。
 技术问题
本实用新型的目的在于提供一种回路天线系统，其能有效提高在小净空区条件下的天线性能。
 技术解决方案
本实用新型的技术方案如下：一种回路天线系统，包括塑料背壳和收容于所述塑料背壳内的主板，所述回路天线系统包括设置于所述塑料背壳表面上的回路天线，所述主板上设有与所述回路天线连接的地脚开关和馈电点，通过调节所述地脚开关，所述回路天线至少包括两个工作状态，在其中一个工作状态中，所述回路天线工作于GSM900TX频段，在另一个工作状态中所述回路天线工作于GSM900 RX频段。
优选的，主板上对应所述回路天线的一端设有净空区，所述净空区的宽度为2.73mm。
优选的，所述回路天线采用LDS技术成型工艺设置于所述塑料背壳。
本实用新型还提供了一种移动终端，包括所述的回路天线系统。
 有益效果
与相关技术相比，本实用新型提供的一种回路天线系统具有如下有益效果：通过设置地脚开关，所述回路天线至少包括两个工作状态，在其中一个工作状态中，所述回路天线工作于GSM900TX频段，在另一个工作状态中所述回路天线工作于GSM900 RX频段，进而实现低频GSM900 TX，GSM900 RX性能要求。
 附图说明
为了更清楚地说明本实用新型实施例中的技术方案，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实用新型的一些实施例，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它的附图，其中：
图1为本实用新型回路天线系统的立体结构图；
图2为本实用新型回路天线系统的立体分解图；
图3为本实用新型回路天线系统的主板示意图；
图4为本实用新型回路天线系统的在GSM900 TX，GSM900 RX同通路时的回波损耗图；
图5为本实用新型回路天线系统的在GSM900 TX通路时的回波损耗图；
图6为本实用新型回路天线系统的在GSM900 RX通路时的回波损耗图；
图7为本实用新型回路天线系统的在GSM900 TX，GSM900 RX分通路前后的测试效率对比图。
 本发明的实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本实用新型保护的范围。
请参阅图1和3，本实用新型实施例提供了一种回路天线系统100，包括塑料背壳1和收容于所述塑料背壳1内的主板2，所述主板2的一端设有净空区20，在本实用新型的具体实施例中，所述净空区20由两段相互间隔设置的净空区组成，其中一段净空区20的长度为27.61mm，宽度为2.73mm；另一段净空区20的长度为29.38mm，高度为2.73mm。所述净空区20的宽度是指主板2上的系统地23到主板2边缘的距离。
所述回路天线系统100包括采用LDS技术成型于所述塑料背壳1表面上并对应所述净空区设置的回路天线3，采用LDS技术成型工艺，能有效避免传统金属环方案断缝处有色差的问题。所述回路天线3的工作频段为GSM 900频段。
所述主板2上设有与所述回路天线3连接的地脚开关21和馈电点22，当然，所述主板2上还有安装其它电子元器件，例如扬声器、麦克风、USB接口、马达等，在图上不一一标号。
所述回路天线3与所述地脚开关21和所述馈电点22连接，通过调节地脚开关21，实现低频GSM900TX，GSM900RX通过两个通路下地，从而保证GSM900TX，GSM900RX均满足性能要求。也就是说，通过调节所述地脚开关21，所述回路天线3至少包括两个工作状态，在其中一个工作状态中，所述回路天线工作于GSM900TX频段，在另一个工作状态中所述回路天线工作于GSM900 RX频段。
如图4所示，当GSM900TX，GSM900RX同通路时，即未分为两个通路时，带宽较窄，很难满足人头手测试要求。GSM900TX，GSM900RX通过两个通路下地时，各自的回波损耗如图5-6。可见，当GSM900TX，GSM900RX通过两个通路下地时，各自带宽均足够。再结合图7所示，TX，RX同通路线条代表GSM900 TX和GSM900RX在通路的测试效率，性能较差；RX单通路线条和TX单通路线条分别代表GSM900 RX和GSM900TX分两个通路的测试效率。可见，相对于TX，RX同通路，通过分段实现低频GSM900TX，GSM900RX具有更优的性能。
本实用新型还提供了一种移动终端，包括notch屏，即异形切割屏，还包括所述的回路天线系统100。
与相关技术相比，本实用新型提供的一种回路天线系统具有如下有益效果：通过设置地脚开关，所述回路天线至少包括两个工作状态，在其中一个工作状态中，所述回路天线工作于GSM900TX频段，在另一个工作状态中所述回路天线工作于GSM900 RX频段，进而实现低频GSM900 TX，GSM900 RX性能要求。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (4)

  1. 一种回路天线系统，包括塑料背壳和收容于所述塑料背壳内的主板，其特征在于，所述回路天线系统包括设置于所述塑料背壳表面上的回路天线，所述主板上设有与所述回路天线连接的地脚开关和馈电点，通过调节所述地脚开关，所述回路天线至少包括两个工作状态，在其中一个工作状态中，所述回路天线工作于GSM900TX频段，在另一个工作状态中所述回路天线工作于GSM900 RX频段。
  2. 根据权利要求1所述的回路天线系统，其特征在于，主板上对应所述回路天线的一端设有净空区，所述净空区的宽度为2.73mm。
  3. 根据权利要求1所述的回路天线系统，其特征在于，所述回路天线采用LDS技术成型工艺设置于所述塑料背壳。
  4. 一种移动终端，其特征在于，包括权利要求1-3任意一项所述的回路天线系统。
PCT/CN2019/088242 2018-08-03 2019-05-24 回路天线系统及移动终端 WO2020024675A1 (zh)

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CN208589542U (zh) * 2018-08-03 2019-03-08 瑞声精密制造科技(常州)有限公司 回路天线系统及移动终端
CN109193120B (zh) * 2018-08-07 2021-02-23 瑞声科技(新加坡)有限公司 天线系统及移动终端

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CN105141717A (zh) * 2015-07-31 2015-12-09 瑞声声学科技(苏州)有限公司 移动终端设备
CN206003954U (zh) * 2016-08-19 2017-03-08 上海与德通讯技术有限公司 移动终端
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