WO2020034686A1 - 天线系统及移动终端 - Google Patents

天线系统及移动终端 Download PDF

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Publication number
WO2020034686A1
WO2020034686A1 PCT/CN2019/087688 CN2019087688W WO2020034686A1 WO 2020034686 A1 WO2020034686 A1 WO 2020034686A1 CN 2019087688 W CN2019087688 W CN 2019087688W WO 2020034686 A1 WO2020034686 A1 WO 2020034686A1
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WIPO (PCT)
Prior art keywords
antenna system
antenna
power amplifier
mobile terminal
present
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Ceased
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PCT/CN2019/087688
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English (en)
French (fr)
Inventor
刘时杰
陈勇利
梁悦
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AAC Technologies Holdings Shenzhen Co Ltd
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AAC Acoustic Technologies Shenzhen Co Ltd
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Publication of WO2020034686A1 publication Critical patent/WO2020034686A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • 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
    • 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
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/065—Patch antenna array
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • 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
    • 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
    • H04B7/0426—Power distribution
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/213—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only in integrated circuits

Definitions

  • the present invention relates to the technical field of antennas, and in particular, to an antenna system and a mobile terminal.
  • wireless communication equipment there is always a device that radiates electromagnetic energy to space and receives electromagnetic energy from space.
  • This device is an antenna.
  • the function of the antenna is to transmit digital signals or analog signals modulated to the radio frequency to the space wireless channel, or to receive digital or analog signals modulated to the radio frequency from the space wireless channel.
  • MIMO Multiple-Input Multiple-Output
  • a PA is routed to the antenna feed point on a PCB.
  • Multiple antennas will have multiple transmission lines from the PA to the antenna feed point.
  • the disadvantage of this related technology is that the motherboard layout is compact and it is difficult to lay out multiple traces at the same time; it interferes with other signal lines and needs to solve the interference problem.
  • An object of the present invention is to provide an antenna system with simple wiring and avoiding the problem of mutual interference of signal lines.
  • the technical solution of the present invention is as follows: An antenna system is applied to a mobile terminal.
  • the mobile terminal includes a housing, a main board housed in the housing, and a plurality of antenna units.
  • the main board includes a power amplifier and the antenna system.
  • the transmission circuit board is contained in the casing for electrically connecting the power amplifier and the antenna unit.
  • the transmission circuit board includes a plurality of transmission lines for feeding the antenna unit.
  • the working frequency band of the antenna system is 3.4-3.6 GHz and 4.8-5.0 GHz.
  • the transmission line board is an FPC transmission line board or an LCP transmission line board.
  • one end of the plurality of transmission lines is collected to be connected to the power amplifier, and the other end is dispersed to be connected to a plurality of the antenna units.
  • the number of the antenna units is eight, and an 8 * 8 MIMO antenna system is formed.
  • the eight antenna units are symmetrically arranged about the center line of the mobile terminal, and the number of the transmission lines is eight, and the eight transmission lines are also arranged symmetrically about the center line of the mobile terminal.
  • the present invention also provides a mobile terminal including the antenna system.
  • an antenna system provided by the present invention is provided with an additional transmission line board dedicated to connecting a power amplifier and an antenna unit, thereby eliminating the need to connect a power amplifier and an antenna unit on the main board, thereby facilitating the arrangement To avoid signal interference between the traces.
  • FIG. 1 is a structural framework diagram of an antenna system according to the present invention
  • FIG. 2 is a schematic structural diagram of a mobile terminal according to the present invention.
  • FIG. 3 is a schematic structural diagram of a part of a transmission circuit board according to the present invention.
  • FIG. 5 is a graph of transmission coefficients of the two transmission lines in FIG. 3.
  • an embodiment of the present invention provides an antenna system with working frequency bands of 3.4-3.6 GHz and 4.8-5.0 GHz, which is applied to a mobile terminal 100.
  • the mobile terminal 100 includes a casing 10, a motherboard 20, The antenna unit 30 and the transmission circuit board 40, the main board 20, the antenna unit 30 and the transmission circuit board 40 are all housed in the casing 10.
  • the casing 10 may be made of a non-metallic material. At least, a part of the casing 10 facing the signal radiation direction of the antenna unit 30 is made of a non-metallic material, thereby reducing the electromagnetic shielding effect on the antenna unit 30. In a preferred embodiment of the present invention, the casing 10 is made of plastic.
  • the main board 20 includes a power amplifier 200.
  • the main board 20 also includes a feeding network (not shown) that is matched with the power amplifier 200.
  • the number of the antenna units 30 is multiple, so as to realize a multiple-input multiple-output function.
  • the transmission line board 40 is an FPC transmission line board or an LCP transmission line board, and is used to electrically connect the power amplifier 200 and the antenna unit 30.
  • the transmission line board 40 includes a plurality of pieces to feed the antenna unit 30.
  • the antenna system includes eight antenna units 30 and eight transmission lines, and the eight antenna units 30 and the transmission lines 400 are symmetrical arrays about a center line of the mobile terminal. .
  • the two transmission lines are labeled a and b, respectively, where transmission line a and the The end connected to the power amplifier 200 is labeled 1 and the end connected to the antenna unit 30 is labeled 2; the end of the transmission line b connected to the power amplifier 200 is labeled 3, and the end connected to the antenna unit 30 is labeled 4 .
  • S1, 1, S3, and 3 are reflection coefficient curves of transmission lines a and b
  • S2, 1 and S4, 3 are transmission coefficient curves of transmission lines a and b, respectively.
  • the working frequency bands of the antenna system 3.4-3.6GHz and 4.8-5.0GHz have smaller transmission loss performance, which can meet actual requirements.
  • the present invention provides a mobile terminal 100 including the antenna system.
  • an antenna system provided by the present invention is provided with an additional transmission line board dedicated to connecting a power amplifier and an antenna unit, thereby eliminating the need to connect a power amplifier and an antenna unit on a main board, thereby facilitating the arrangement To avoid signal interference between the traces.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Telephone Set Structure (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

本发明提供了一种天线系统，应用于移动终端，所述移动终端包括壳体、收容于所述壳体内的主板以及多个天线单元，所述主板包括功率放大器，所述天线系统包括收容于所述壳体内以用于电连接所述功率放大器与所述天线单元的传输线路板，所述传输线路板包括多条给所述天线单元馈电的传输线。与相关技术相比，本发明提供的一种天线系统，其通过额外设置一块专用于连接功率放大器与天线单元的传输线路板，从而无需在主板上走线来连接功率放大器与天线单元，方便排线，避免各走线相互之间的信号干扰。

Description

天线系统及移动终端 【技术领域】
本发明涉及天线技术领域，尤其涉及一种天线系统及移动终端。
【背景技术】
在无线通信设备中，总存在一个向空间辐射电磁能量和从空间接收电磁能量的装置，这个装置就是天线。天线的作用是将调制到射频频率的数字信号或模拟信号发射到空间无线信道，或从空间无线信道接收调制在射频频率上的数字或模拟信号。
现如今，5G通信技术蓬勃发展。多输入多输出(MIMO:Multiple-Input Multiple-Output)技术是5G天线的核心技术，而对于sub-6G的8*8MIMO天线，PA(功率放大器)到天线馈点间的传输线如何走线值的关注。相关技术：一个PA通过在PCB板上走线到天线馈点。多天线就会有多条传输线从PA到天线馈点。这种相关技术的缺陷在于：主板布局紧凑，很难同时布局多条走线；跟其他信号线相互干扰，需解决干扰问题。
因此，有必要提供一种新型的天线系统以解决上述问题。
【发明内容】
本发明的目的在于提供一种天线系统，其布线简单，不会产生信号线相互干扰的问题。
本发明的技术方案如下：一种天线系统，应用于移动终端，所述移动终端包括壳体、收容于所述壳体内的主板以及多个天线单元，所述主板包括功率放大器，所述天线系统包括收容于所述壳体内以用于电连接所述功率放大器与所述天线单元的传输线路板，所述传输线路板包括多条给所述天线单元馈电的传输线。
优选的，所述天线系统工作频段为3.4-3.6GHz和4.8-5.0GHz。
优选的，所述传输线路板为FPC传输线路板或者LCP传输线路板。
优选的，多条所述传输线的一端汇集以与所述功率放大器连接，另一端分散以与多个所述天线单元连接。
优选的，所述天线单元的数量为8个，并形成8*8MIMO天线系统。
优选的，8个所述天线单元关于所述移动终端的中心线对称阵列，所述传输线的数量为8条，8条所述传输线也关于所述移动终端的中心线对称设置。
本发明还提供了一种移动终端，包括所述的天线系统。
与相关技术相比，本发明提供的一种天线系统，其通过额外设置一块专用于连接功率放大器与天线单元的传输线路板，从而无需在主板上走线来连接功率放大器与天线单元，方便排线，避免各走线相互之间的信号干扰。
【附图说明】
为了更清楚地说明本发明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它的附图，其中：
图1为本发明天线系统的结构框架图；
图2为本发明移动终端的结构示意图；
图3为本发明传输线路板的部分结构示意图；
图4为图3中两条传输线的反射系数图；
图5为图3中两条传输线的传输系数图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明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发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。
请参阅图1和2，本发明实施例提供了一种天线系统，工作频段为 3.4-3.6GHz和4.8-5.0GHz，应用于移动终端100，所述移动终端100包括壳体10、主板20、天线单元30以及传输线路板40，所述主板20、所述天线单元30以及所述传输线路板40均收容于所述壳体10内。
所述壳体10可由非金属材料制造，至少，所述壳体10正对所述天线单元30信号辐射方向的部分由非金属材料制造，从而减少对所述天线单元30的电磁屏蔽效果，在本发明的优选实施方式中，所述壳体10由塑料制造。
所述主板20包括功率放大器200，当然，所述主板20还包括与所述功率放大器200配套的馈电网络(未图示)。
所述天线单元30数量为多个，从而实现多输入多输出功能。
所述传输线路板40为FPC传输线路板或者LCP传输线路板，用于电连接所述功率放大器200与所述天线单元30，所述传输线路板40包括多条给所述天线单元30馈电的传输线400。多条所述传输线400的一端汇集以与所述功率放大器200连接，另一端分散以与多个所述天线单元30连接。
在本发明提供的具体实施例中，所述天线系统包括8个天线单元30和8条所述传输线，8个所述天线单元30和所述传输线400均关于所述移动终端的中心线对称阵列。
请一并参阅图4所示，取两条所述传输线400为例对本发明提供的所述传输线400进行反射系数测试，两条所述传输线分别标记为a和b，其中，传输线a与所述功率放大器200连接的一端标记为1，与所述天线单元30连接的一端标记为2；传输线b与所述功率放大器200连接的一端标记为3，与所述天线单元30连接的一端标记为4。
参阅图5和6，由S1,1、S3,3分别为传输线a、b的反射系数曲线，S2,1以及S4,3分别为传输线a、b的传输系数曲线，可以看出所述传输线在所述天线系统的工作频段3.4-3.6GHz和4.8-5.0GHz具有较小的传输损耗性能，可满足实际需求。
本发明提供了一种所述移动终端100，包括所述的天线系统。
与相关技术相比，本发明提供的一种天线系统，其通过额外设置一块 专用于连接功率放大器与天线单元的传输线路板，从而无需在主板上走线来连接功率放大器与天线单元，方便排线，避免各走线相互之间的信号干扰。
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 (7)

  1. 一种天线系统，应用于移动终端，所述移动终端包括壳体、收容于所述壳体内的主板以及多个天线单元，所述主板包括功率放大器，其特征在于，所述天线系统包括收容于所述壳体内以用于电连接所述功率放大器与所述天线单元的传输线路板，所述传输线路板包括多条给所述天线单元馈电的传输线。
  2. 根据权利要求1所述的天线系统，其特征在于，所述天线系统工作频段为3.4-3.6GHz和4.8-5.0GHz。
  3. 根据权利要求1所述的天线系统，其特征在于，所述传输线路板为FPC传输线路板或者LCP传输线路板。
  4. 根据权利要求1或3所述的天线系统，其特征在于，多条所述传输线的一端汇集以与所述功率放大器连接，另一端分散以与多个所述天线单元连接。
  5. 根据权利要求4所述的天线系统，其特征在于，所述天线单元的数量为8个，并形成8*8MIMO天线系统。
  6. 根据权利要求5所述的天线系统，其特征在于，8个所述天线单元关于所述移动终端的中心线对称阵列，所述传输线的数量为8条，8条所述传输线也关于所述移动终端的中心线对称设置。
  7. 一种移动终端，其特征在于，包括如权利要求1-6任意一项所述的天线系统。
PCT/CN2019/087688 2018-08-13 2019-05-21 天线系统及移动终端 Ceased WO2020034686A1 (zh)

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