CN202444054U - 一种天线及移动终端 - Google Patents

一种天线及移动终端 Download PDF

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CN202444054U
CN202444054U CN201220050433.4U CN201220050433U CN202444054U CN 202444054 U CN202444054 U CN 202444054U CN 201220050433 U CN201220050433 U CN 201220050433U CN 202444054 U CN202444054 U CN 202444054U
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antenna
frequency branch
low frequency
ground connection
cabling
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范毅
陈丽娜
兰尧
孙树辉
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Huawei Device Co Ltd
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Huawei Device Co Ltd
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Priority to PCT/CN2013/071170 priority patent/WO2013120413A1/zh
Priority to JP2014547709A priority patent/JP5920798B2/ja
Priority to EP13749966.1A priority patent/EP2816662A4/en
Priority to US14/314,406 priority patent/US20140306856A1/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/50Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242Supports; 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
    • H01Q1/243Supports; 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242Supports; 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
    • H01Q1/245Supports; 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/48Earthing means; Earth screens; Counterpoises
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30Arrangements for providing operation on different wavebands
    • H01Q5/307Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30Arrangements for providing operation on different wavebands
    • H01Q5/307Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • H01Q5/364Creating multiple current paths
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30Arrangements for providing operation on different wavebands
    • H01Q5/307Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • H01Q5/364Creating multiple current paths
    • H01Q5/371Branching current paths
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30Arrangements for providing operation on different wavebands
    • H01Q5/378Combination of fed elements with parasitic elements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04Resonant antennas
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04Resonant antennas
    • H01Q9/30Resonant antennas with feed to end of elongated active element, e.g. unipole
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04Resonant antennas
    • H01Q9/30Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

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

Abstract

本实用新型公开了一种天线及移动终端,属于通讯领域。所述天线包括接地走线和馈电走线,馈电走线包括低频分支和高频分支,低频分支与高频分支具有共同的端点,低频分支被接地走线所围绕并形成耦合加载模式和等效耦合馈电环天线辐射模式,高频分支设于接地走线之外,用以完成高频的单极子辐射模式。所述移动终端包括PCB板及所述的天线,所述天线印制在PCB板上。本实用新型实施例解决了现有技术中存在的低频带宽及高频带宽不足的问题,有效提高了所述天线的性能,而且能够有效的把近场能量分散给PCB和移动终端,达到降低SAR的目的,不仅节省了成本,而且增加了所述天线到SAR测试仪器躯干模型的有效距离。

Description

一种天线及移动终端
技术领域
本实用新型涉及通讯领域,特别涉及一种天线及移动终端。
背景技术
移动终端(亦称为移动通信终端)是指可以在移动中使用的计算机设备,广义的讲包括手机、笔记本、POS机,甚至包括车载电脑。但是大部分情况下,移动终端是指手机或者具有多种应用功能的智能手机。
下面以手机为例加以说明,手机通常包括天线,天线通常采用PIFA(Planar Inverted Fantenna,平面倒F天线)或Monopole(Monopole Antenna,单极子天线),上述天线的结构基本相同,均包括接地走线和馈电走线。
但是,受上述天线结构的限制,存在低频带宽和高频带宽不足的问题,使得天线性能受到影响。
此外,现有技术中的天线还存在工作频点受终端尺寸限制的问题,使得天线的性能受到影响。
实用新型内容
为了克服上述现有技术中的天线,存在的低频带宽和高频带宽不足的问题,本实用新型实施例提供了一种天线及移动终端。所述技术方案如下:
一种天线,包括接地走线和馈电走线,所述馈电走线包括低频分支和高频分支,所述低频分支与所述高频分支具有共同的端点;其中,
所述低频分支被所述接地走线围绕,并且所述低频分支与所述接地走线之间设有缝隙,所述低频分支与所述接地走线形成耦合加载模式和等效耦合馈电环天线辐射模式;
所述高频分支设于所述接地走线之外,用以完成高频的单极子辐射模式。
本实用新型实施例还提供了一种移动终端,包括印刷电路板(简称PCB),还包括所述的天线,所述天线印制在所述印刷电路板(简称PCB)上。
本实用新型实施例提供的技术方案带来的有益效果是:相比现有技术,本实用新型实施例通过将高频分支设于接地走线之外,完成高频的单极子辐射模式,通过低频分支被接地走线围绕,形成耦合加载模式和等效耦合馈电环天线辐射模式,解决了现有技术中所述天线存在的低频带宽及高频带宽不足的问题,有效提高了所述天线的性能;进一步地,通过将所述天线印制在PCB(Printed Circuit Board,印刷电路板)上,能够有效的把近场能量分散给PCB和移动终端,达到降低SAR(Specific Absorption Rate,比吸收率)的目的;其次,本实用新型所述天线印制在PCB上,不仅节省了成本,而且增加了所述天线到SAR测试仪器躯干模型的有效距离;此外,由于本实用新型所述天线能够灵活布置在PCB上,解决了现有技术中天线的工作频点受终端尺寸限制的问题,有效提升了所述天线的性能。
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他的附图。
图1是本实用新型实施例所述天线的整体结构示意图;
图2是本实用新型实施例所述天线应用在PCB板上的结构示意图;
图3是本实用新型实施例所述天线的工作模式图;
图4是本实用实施例所述天线的效率图。
图1-图2中各符号含义如下:
10天线,
11接地走线,12馈电走线,12A低频分支,12B高频分支,12C共同的端点,13缝隙,
20PCB;
图3中,横坐标表示频率,单位为赫兹Hz;纵坐标表示回波损耗,单位为分贝db;模式1等效耦合馈电环天线辐射模式,模式2耦合加载模式,模式3高频的单极子辐射模式;
图4中,横坐标表示频率,单位为赫兹Hz;纵坐标表示效率,单位为%;。
具体实施方式
为使本实用新型的目的、技术方案和优点更加清楚,下面将结合附图对本实用新型实施方式作进一步地详细描述。
实施例1
如图1所示,本实用新型所述的一种天线,包括接地走线11和馈电走线12,馈电走线12包括低频分支12A和高频分支12B,低频分支12A与高频分支12B具有共同的端点12C;其中,
低频分支12A被接地走线11围绕,并且低频分支12A与接地走线11之间设有缝隙13,低频分支12A与接地走线11形成耦合加载模式和等效耦合馈电环天线辐射模式,
具体地,由于接地走线11和低频分支12A距离较近,低频分支12A和接地走线11形成一种电容,而低频分支12A上的高频信号会通过这个电容从低频分支12A耦合到接地走线11上,而低频分支12A本身就是天线,因此,图1所示是在天线上耦合一个电容,称做电容加载,也就是说在低频分支12A与接地走线11形成耦合加载模式;
具体地,因为低频分支12A和接地走线11耦合形成电容,高频信号通过上述电容得以连接,虽然低频分支12A和接地走线11物理上(或者说实体上)没有连接,但实际对于高频信号是通的,即等效为通路,具体的从低频分支12A经过接地走线11到PCB上,形成一个等效的闭环电结构,也就是说低频分支12A与接地走线11形成等效耦合馈电环天线辐射模式;
高频分支12B设于接地走线11之外,用以完成高频的单极子辐射模式。
相比现有技术,如图1所示,本实用新型实施例通过将高频分支12B设于接地走线11之外,完成高频的单极子辐射模式(参见图3中的模式3),通过低频分支12A被接地走线11围绕,形成耦合加载模式(参见图3中的模式1)和等效耦合馈电环天线辐射模式(参见图3中的模式2),同时,低频分支12A通过倍频以及其与接地走线11之间的缝隙13等辐射模式扩展高频带宽,因此本实用新型所述天线解决了现有技术中所述天线存在的低频带宽及高频带宽不足的问题,有效提高了所述天线的性能。
具体地,如图1所示,作为优选,低频分支12A部分被接地走线11围绕。
具体地,如图1所示,作为优选,接地走线11为蛇形走线。
具体地,作为优选,接地走线11主要控制700Mhz-740Mhz的天线驻波。
具体地,作为优选,低频分支12A控制900Mhz附近的带宽驻波。
具体地,作为优选,高频分支12B控制高频驻波,用以配合低频分支12A和接地走线11完成高频带宽覆盖。
通过上述优选频率,使移动终端上的天线可以满足LTE(Long Term Evolution,长期演进)的频段需求。例如:AT&T美国引动运营商所需求的频段699~960Mhz、1710~2170Mhz,低频带宽约270Mhz,解决了传统天线无法完成上述频段的覆盖问题。
实施例2
如图2所示,本实用新型实施例还提供了一种移动终端,包括PCB 20板,还包括的天线10,天线10印制在PCB 20板上,其中,天线10的结构与是实施例1中天线结构相同,天线10结构本实施例不再赘述。
相比现有技术,本实用新型所述天线有效地融合了多种天线辐射模式,包括等效耦合馈电环天线辐射模式,耦合加载模式以及高频的单极子辐射模式三种辐射模式,解决了现有技术中所述天线存在的低频带宽及高频带宽不足的问题,有效提高了所述天线的性能;通过将所述天线印制在PCB上,能够有效的把近场能量分散给PCB和移动终端,达到降低SAR的目的;其次,本实用新型所述天线印制在PCB上,不仅节省了成本,而且增加了所述天线到SAR测试仪器躯干模型的有效距离;此外,由于本实用新型所述天线能够灵活布置在PCB上,解决了现有技术中天线的工作频点受终端尺寸限制的问题,有效提升了所述天线的性能(如图4所示)。
以上所述仅为本实用新型的较佳实施例,并不用以限制本实用新型,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 (6)

1.一种天线,包括接地走线和馈电走线,其特征在于,所述馈电走线包括低频分支和高频分支,所述低频分支与所述高频分支具有共同的端点;其中,
所述低频分支被所述接地走线围绕,并且所述低频分支与所述接地走线之间设有缝隙,所述低频分支与所述接地走线形成耦合加载模式和等效耦合馈电环天线辐射模式;
所述高频分支设于所述接地走线之外,用以完成高频的单极子辐射模式。
2.如权利要求1所述的天线,其特征在于,所述接地走线为蛇形走线。
3.如权利要求1或2所述的天线,其特征在于,所述接地走线主要控制700Mhz-740Mhz的天线驻波。
4.如权利要求3所述的天线,其特征在于,所述低频分支控制900Mhz附近的带宽驻波。
5.如权利要求4所述的天线,其特征在于,所述高频分支控制高频驻波,用以配合所述低频分支和所述接地走线完成高频带宽覆盖。
6.一种移动终端,包括印刷电路板,其特征在于,所述移动终端还包括权利要求1-5任一项权利要求所述的天线,所述天线印制在所述印刷电路板上。
CN201220050433.4U 2012-02-16 2012-02-16 一种天线及移动终端 Expired - Lifetime CN202444054U (zh)

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CN201220050433.4U CN202444054U (zh) 2012-02-16 2012-02-16 一种天线及移动终端
PCT/CN2013/071170 WO2013120413A1 (zh) 2012-02-16 2013-01-31 一种天线及移动终端
JP2014547709A JP5920798B2 (ja) 2012-02-16 2013-01-31 アンテナ及び移動端末
EP13749966.1A EP2816662A4 (en) 2012-02-16 2013-01-31 ANTENNA AND MOBILE TERMINAL
US14/314,406 US20140306856A1 (en) 2012-02-16 2014-06-25 Antenna and Mobile Terminal

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013120413A1 (zh) * 2012-02-16 2013-08-22 华为终端有限公司 一种天线及移动终端
WO2013189375A2 (zh) * 2013-05-21 2013-12-27 中兴通讯股份有限公司 一种缝隙天线和智能终端
CN103762414A (zh) * 2014-01-10 2014-04-30 瑞声光电科技(常州)有限公司 天线
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