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WO2016045436A1 - 一种宽频带4g无线终端天线 - Google Patents

一种宽频带4g无线终端天线 Download PDF

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Publication number
WO2016045436A1
WO2016045436A1 PCT/CN2015/084348 CN2015084348W WO2016045436A1 WO 2016045436 A1 WO2016045436 A1 WO 2016045436A1 CN 2015084348 W CN2015084348 W CN 2015084348W WO 2016045436 A1 WO2016045436 A1 WO 2016045436A1
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radiating unit
branch
circuit
parasitic short
feeding
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PCT/CN2015/084348
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English (en)
French (fr)
Inventor
程孝奇
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中兴通讯股份有限公司
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Publication of WO2016045436A1 publication Critical patent/WO2016045436A1/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
    • H01Q1/36—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

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  • This paper relates to the field of wireless terminal antenna design, and more particularly to a wideband 4G wireless terminal antenna.
  • wireless terminals have begun to develop in a thin and light direction, especially the currently favored 4G mobile phones, so that the space reserved for the design of mobile phone antennas is getting smaller and smaller, and the environment is becoming more and more complicated. Under the conventional antenna design, it is difficult to meet the requirements of 4G mobile phones.
  • Embodiments of the present invention provide a wideband 4G wireless terminal antenna to achieve wideband under conditions of limited design space.
  • the embodiment of the invention provides a broadband 4G wireless terminal antenna, and the antenna includes:
  • a parasitic short-circuit branch radiating unit (4) that surrounds the feed branch unit (3) and generates low-frequency resonance.
  • the feed point branch radiating unit (3) is connected to an antenna RF signal feeding point on the main board PCB (1);
  • the parasitic short-circuit branch radiating unit (4) is connected to the metal ground of the main board PCB (1).
  • the feed branch radiating unit (3) and the parasitic short-circuit branch radiating unit (4) are in an open loop shape, and the opening of the feeding branch radiating unit (3) and the opening direction of the parasitic short-circuit branch radiating unit (4) the same.
  • the length of the parasitic short-circuit branch radiating unit (4) is calculated according to the fundamental frequency generated by the parasitic short-circuit radiating unit (4), and the length of the feeding branch radiating unit (3) is according to the feeding
  • the fundamental frequency generated by the electric branch radiating unit (3) is calculated, and the length of the parasitic short-circuit radiating unit (4) is greater than the length of the feeding branch radiating unit (3).
  • the width of the first slit (6) between the feeding branch radiating unit (3) and the parasitic short-circuit radiating unit (4) from the feeding point of the antenna radio frequency signal can be adjusted;
  • the size of the width of the second slit (7) between the feed branch radiating unit (3) and the parasitic short-circuit branch radiating unit (4) can be adjusted.
  • the first slit (6) between the feed branch radiating unit (3) and the parasitic short-circuit radiating unit (4) has a width of 0.4 mm, and the feeding branch radiating unit (3) and the parasitic short-circuit branch
  • the width of the second slit (7) between the radiating elements (4) is 0.8 mm.
  • the above technical solution realizes coupling of multiple harmonic modes by the position layout of the feeding branch unit and the parasitic shorting unit, thereby broadening the frequency bandwidth and satisfying the 4G multi-band use requirement of the wireless terminal. Moreover, in the above technical solution, since only the two units of the feed branch unit and the parasitic short unit are used, the structure is simple and the space is small, and can be widely adapted to an ultra-thin 4G wireless terminal.
  • FIG. 1 is a structural diagram of a broadband 4G wireless terminal antenna according to an embodiment of the present invention.
  • Figure 2 is a partial enlarged view of the antenna of Figure 1;
  • FIG. 3 is a simulation diagram of return loss of a wireless terminal antenna according to an embodiment of the present invention.
  • FIG. 1 is a structural diagram of a wideband 4G wireless terminal antenna according to an embodiment of the present invention.
  • 1 is the mobile phone motherboard PCB
  • 2 is the motherboard PCB ground
  • 3 are the antenna radiating elements on the motherboard PCB surface
  • 3 is the feeding branch radiating unit
  • 4 is the parasitic short-circuit branch radiating unit.
  • the feeding branch radiating unit 3 and the parasitic short-circuit radiating unit 4 can be attached to the main board PCB surface through an FPC (flexible circuit board), and the other side of the main board PCB is the main board clearing area 5, since the radiating antenna is located on the main board PCB surface.
  • FPC flexible circuit board
  • setting a clearance area on the other side of the motherboard PCB can ensure the bandwidth of the antenna.
  • the feeding branch radiating unit 3 is responsible for generating high frequency resonance, and resonance can occur at 960, 2250 and 2600 MHz; the parasitic shorting branch radiating unit 4 surrounding the feeding branch unit 3 is responsible for generating low frequency resonance, which can be Resonance occurs at 700MHz, 1700MHz, and 2710MHz.
  • the length of the parasitic short-circuit branch radiating unit 4 is calculated according to the fundamental frequency generated by the parasitic short-circuit radiating unit (4), and the length of the feeding branch radiating unit 3 is radiated according to the feeding branch Calculating the fundamental frequency generated by the unit (3), the length of the parasitic short-circuit branch radiating unit 4 and the length of the feeding branch radiating unit 3 are both close to a quarter wavelength of 800 MHz, wherein the parasitic short-circuit branch The length of the radiating element 4 is greater than the length of the feed branch radiating element 3.
  • FIG. 2 is a partial enlarged view of the antenna of FIG. 1.
  • the feed point branch radiating unit 3 is connected to the antenna RF signal feeding point 11 on the main board PCB, and the feed point branch radiating unit 3 can be connected to the antenna RF signal feeding point 11 through the first foot 8;
  • the parasitic short-circuit branch radiating unit 4 is connected to the metal ground of the PCB through a short-circuit point 10 disposed on the surface of the main board PCB, and the parasitic short-circuit branch radiating unit 4 can be connected to the short-circuit point 10 through the second leg 9.
  • the feeding branch radiating unit 3 and the parasitic short-branch radiating unit 4 are in an open ring shape, and the opening of the feeding branch radiating unit 3 and the opening direction of the parasitic short-circuit branch radiating unit 4 are the same, so that the design not only realizes the feeding
  • the tight coupling of the electric branch radiating unit 3 and the parasitic short-circuit branch radiating unit 4 also saves design space.
  • the width of the first slot 6 between the feeding branch radiating unit 3 and the parasitic short-circuit radiating unit 4 from the feeding point of the antenna radio frequency signal is adjustable, and the feeding branch radiating unit 3 and The size of the width of the second slit 7 between the parasitic short-circuit branch radiating elements 4 can also be adjusted.
  • the three resonance modes of the feed branch radiating unit 3 and the parasitic short-circuit branch radiating unit 4 can be correspondingly coupled to each other, thereby widening the antenna band, wherein Adjusting the width of the first slit 6 can adjust the bandwidth and resonance of the high frequency, and adjusting the width of the second slit 7 can adjust the bandwidth and resonance of the high and low frequencies.
  • the lengths of the feed branch radiating unit 3 and the parasitic short stub radiating unit 4 may be appropriately adjusted for the needs of more frequency bands.
  • FIG. 3 is a graph showing a return loss simulation curve of a wireless terminal antenna according to an embodiment of the present invention.
  • S11 refers to the return loss of the antenna.
  • the antenna has two resonant frequency bands, which can cover the entire LTE working frequency band (698-960MHz, 1710-2690MHz) well, and the return loss of the two-pass band is less than -5dB, which satisfies the mobile communication.
  • the above technical solution realizes coupling of multiple harmonic modes by the position layout of the feeding branch unit and the parasitic shorting unit, thereby broadening the frequency bandwidth and satisfying the 4G multi-band use requirement of the wireless terminal. Moreover, in the above technical solution, since only the two units of the feed branch unit and the parasitic short unit are used, the structure is simple and the space is small, and can be widely adapted to an ultra-thin 4G wireless terminal.

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Abstract

一种宽频带的4G无线终端天线，其中，所述天线包括：位于主板PCB(1)上的产生高频谐振的馈电支节辐射单元(3)；以及围绕在所述馈电支节单元(3)外部，且产生低频谐振的寄生短路支节辐射单元(4)。

Description

一种宽频带4G无线终端天线 技术领域
本文涉及无线终端天线设计领域，尤其涉及一种宽频带的4G无线终端天线。
背景技术
随着无线通信技术迅速发展，无线终端所使用的频段不断增加，为了满足用户的更多业务需求，目前的移动通信终端网络中已经同时存在2G、3G、LTE(Long Term Evolution，长期演进)等多制式，这就需要无线终端天线能够同时覆盖2G频段、3G网络频段和LTE频段。由于LTE频段要求的带宽非常宽(698－960MHz、1710-2690MHz)，对4G无线终端的天线设计提出了新的要求。
另一方面，目前无线终端已经开始向着轻薄方向发展，特别是目前备受青睐的4G手机，这样留给手机天线设计的空间越来越小，环境也越来越复杂，在这样有限的设计空间下，常规天线设计已经很难满足4G手机的要求。
发明内容
本发明实施例提供了一种宽频带的4G无线终端天线，以在设计空间有限的条件下实现宽频。
本发明实施例提供了一种宽频带的4G无线终端天线，所述天线包括：
位于主板PCB(1)上的产生高频谐振的馈电支节辐射单元(3)；以及
围绕在所述馈电支节单元(3)外部，且产生低频谐振的寄生短路支节辐射单元(4)。
可选地，
所述馈点支节辐射单元(3)与主板PCB(1)上的天线射频信号馈电点连接；
所述寄生短路支节辐射单元(4)与主板PCB(1)的金属地连接。
可选地，
所述馈电支节辐射单元(3)和寄生短路支节辐射单元(4)呈开口环形，且馈电支节辐射单元(3)的开口和寄生短路支节辐射单元(4)的开口方向相同。
可选地，
所述寄生短路支节辐射单元(4)的长度根据所述寄生短路支节辐射单元(4)产生的基频频率计算得到，所述馈电支节辐射单元(3)的长度根据所述馈电支节辐射单元(3)产生的基频频率计算得到，所述寄生短路支节辐射单元(4)的长度大于馈电支节辐射单元(3)的长度。
可选地，
所述馈电支节辐射单元(3)和寄生短路支节辐射单元(4)之间从所述天线射频信号馈电点开始的第一缝隙(6)宽度的大小可调节；
所述馈电支节辐射单元(3)和寄生短路支节辐射单元(4)之间的第二缝隙(7)宽度的大小可调节。
可选地，
所述馈电支节辐射单元(3)和寄生短路支节辐射单元(4)之间的第一缝隙(6)宽度为0.4mm，所述馈电支节辐射单元(3)和寄生短路支节辐射单元(4)之间的第二缝隙(7)宽度为0.8mm。
上述技术方案通过馈电支节单元和寄生短路单元的所述位置布局，实现了多种谐波模式的耦合，进而拓宽了频带宽度，满足了无线终端的4G多频段使用要求。并且，上述技术方案，由于仅使用了馈电支节单元和寄生短路单元这两个单元，结构简单，占用空间小，可以广泛适应于超薄的4G无线终端中。
附图概述
图1为本发明实施例的宽频带的4G无线终端天线结构图；
图2为图1所述天线的局部放大图；
图3为本发明实施例的无线终端天线的回波损耗仿真曲线图。
本发明的实施方式
下文中将结合附图对本发明实施例进行详细说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
图1为本发明实施例的宽频带4G无线终端天线的结构图。
图1中，1为手机主板PCB，2为主板PCB地，3、4均为主板PCB面上的天线辐射单元，其中3为馈电支节辐射单元，4为寄生短路支节辐射单元。
馈电支节辐射单元3和寄生短路支节辐射单元4可通过FPC(柔性电路板)贴置于主板PCB面上，主板PCB的另一面为主板净空区5，由于辐射天线位于主板PCB的面上，在主板PCB另一面上设置净空区域可以保证天线的带宽。馈电支节辐射单元3负责产生高频谐振，可在960、2250和2600MHz处发生谐振；围绕在所述馈电支节单元3外部的寄生短路支节辐射单元4负责产生低频谐振，可在700MHz、1700MHz和2710MHz处发生谐振。
所述寄生短路支节辐射单元4的长度根据所述寄生短路支节辐射单元(4)产生的基频频率计算得到，所述馈电支节辐射单元3的长度根据所述馈电支节辐射单元(3)产生的基频频率计算得到，所述寄生短路支节辐射单元4的长度和馈电支节辐射单元3的长度均接近于800MHz的四分之一波长，其中，寄生短路支节辐射单元4的长度大于馈电支节辐射单元3的长度。
图2为图1所述天线的局部放大图。
所述馈点支节辐射单元3与主板PCB上的天线射频信号馈电点11连接，所述馈点支节辐射单元3可通过第一弹脚8与天线射频信号馈电点11连接；所述寄生短路支节辐射单元4通过设置在主板PCB面上的短路点10与PCB的金属地连接，所述寄生短路支节辐射单元4可通过第二弹脚9与短路点10连接。
所述馈电支节辐射单元3和寄生短路支节辐射单元4呈开口环形，且馈电支节辐射单元3的开口和寄生短路支节辐射单元4的开口方向相同，这样设计不仅实现了馈电支节辐射单元3和寄生短路支节辐射单元4的紧耦合，而且也可以节省设计空间。
所述馈电支节辐射单元3和寄生短路支节辐射单元4之间从所述天线射频信号馈电点开始的第一缝隙6宽度的大小可调节，所述馈电支节辐射单元3和寄生短路支节辐射单元4之间的第二缝隙7宽度的大小也可调节。通过适当调节第一缝隙6和第二缝隙7的尺寸，可以使馈电支节辐射单元3和寄生短路支节辐射单元4的三种谐振模式产生相应的能量耦合，从而拓宽天线频带，其中，调节第一缝隙6的宽度可调节高频的带宽与谐振，调节第二缝隙7的宽度可调节高、低频的带宽与谐振。根据实际调试经验，当所述第一缝隙6的宽度为0.4mm，所述第二缝隙7的宽度为0.8mm时，即可满足无线终端的4G多频段使用要求。
可选地，为了更多频段的需求，还可以适当调节馈电支节辐射单元3和寄生短路支节辐射单元4的长度。
图3给出了本发明实施例的无线终端天线的回波损耗仿真曲线图。图中S11是指天线的回波损耗。从图中可以看到天线具有两个谐振频段，可以很好地覆盖整个LTE工作频段(698-960MHz、1710-2690MHz)，且两通带内回波损耗均小于-5dB，满足了移动通信中4G手机天线的技术要求。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序来指令相关硬件完成，所述程序可以存储于计算机可读存储介质中，如只读存储器、磁盘或光盘等。可选地，上述实施例的全部或部分步骤也可以使用一个或多个集成电路来实现，相应地，上述实施例中的各模块/单元可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。本发明不限制于任何特定形式的硬件和软件的结合。
工业实用性
上述技术方案通过馈电支节单元和寄生短路单元的所述位置布局，实现了多种谐波模式的耦合，进而拓宽了频带宽度，满足了无线终端的4G多频段使用要求。并且，上述技术方案，由于仅使用了馈电支节单元和寄生短路单元这两个单元，结构简单，占用空间小，可以广泛适应于超薄的4G无线终端中。

Claims (6)

  1. 一种宽频带的4G无线终端天线，所述天线包括：
    位于主板PCB(1)上的产生高频谐振的馈电支节辐射单元(3)；以及
    围绕在所述馈电支节单元(3)外部，且产生低频谐振的寄生短路支节辐射单元(4)。
  2. 如权利要求1所述的天线，其中，
    所述馈点支节辐射单元(3)与主板PCB(1)上的天线射频信号馈电点连接；
    所述寄生短路支节辐射单元(4)与主板PCB(1)的金属地连接。
  3. 如权利要求2所述的天线，其中，
    所述馈电支节辐射单元(3)和寄生短路支节辐射单元(4)呈开口环形，且馈电支节辐射单元(3)的开口和寄生短路支节辐射单元(4)的开口方向相同。
  4. 如权利要求3所述的天线，其中，
    所述寄生短路支节辐射单元(4)的长度根据所述寄生短路支节辐射单元(4)产生的基频频率计算得到，所述馈电支节辐射单元(3)的长度根据所述馈电支节辐射单元(3)产生的基频频率计算得到，所述寄生短路支节辐射单元(4)的长度大于馈电支节辐射单元(3)的长度。
  5. 如权利要求3所述的天线，其中，
    所述馈电支节辐射单元(3)和寄生短路支节辐射单元(4)之间从所述天线射频信号馈电点开始的第一缝隙(6)宽度的大小可调节；
    所述馈电支节辐射单元(3)和寄生短路支节辐射单元(4)之间的第二缝隙(7)宽度的大小可调节。
  6. 如权利要求5所述的天线，其中，
    所述馈电支节辐射单元(3)和寄生短路支节辐射单元(4)之间的第一缝隙(6)宽度为0.4mm，所述馈电支节辐射单元(3)和寄生短路支节辐射单元(4)之间的第二缝隙(7)宽度为0.8mm。
PCT/CN2015/084348 2014-09-24 2015-07-17 一种宽频带4g无线终端天线 WO2016045436A1 (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109449611A (zh) * 2018-11-01 2019-03-08 英华达（上海）科技有限公司 寄生式单极多频可调频天线系统
CN110994134A (zh) * 2019-12-19 2020-04-10 深圳市信维通信股份有限公司 天线结构及移动终端

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110556620B (zh) 2018-06-01 2021-07-09 华为技术有限公司 天线及移动终端

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1898885A (zh) * 2003-11-24 2007-01-17 香港应用科技研究院有限公司 进行无线通信的低成本、多波束、多波段和多分集天线系统和方法
CN101005291A (zh) * 2007-01-19 2007-07-25 清华大学 移动终端双频平面两天线系统
CN201508908U (zh) * 2009-07-22 2010-06-16 比亚迪股份有限公司 多频天线
CN102110870A (zh) * 2009-12-25 2011-06-29 上海德门电子科技有限公司 一种平面内置天线
CN203071219U (zh) * 2012-12-25 2013-07-17 上海安费诺永亿通讯电子有限公司 一种适用于移动终端的宽带lte天线
CN103414018A (zh) * 2013-05-27 2013-11-27 中山大学 一种双频耦合手机天线

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102055065A (zh) * 2009-11-11 2011-05-11 宏碁股份有限公司 移动通信装置及其天线
CN202534780U (zh) * 2012-04-27 2012-11-14 惠州硕贝德无线科技股份有限公司 一种低辐射平板电脑天线
CN203398265U (zh) * 2013-01-09 2014-01-15 上海德门电子科技有限公司 一种手机平面内置天线

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1898885A (zh) * 2003-11-24 2007-01-17 香港应用科技研究院有限公司 进行无线通信的低成本、多波束、多波段和多分集天线系统和方法
CN101005291A (zh) * 2007-01-19 2007-07-25 清华大学 移动终端双频平面两天线系统
CN201508908U (zh) * 2009-07-22 2010-06-16 比亚迪股份有限公司 多频天线
CN102110870A (zh) * 2009-12-25 2011-06-29 上海德门电子科技有限公司 一种平面内置天线
CN203071219U (zh) * 2012-12-25 2013-07-17 上海安费诺永亿通讯电子有限公司 一种适用于移动终端的宽带lte天线
CN103414018A (zh) * 2013-05-27 2013-11-27 中山大学 一种双频耦合手机天线

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109449611A (zh) * 2018-11-01 2019-03-08 英华达（上海）科技有限公司 寄生式单极多频可调频天线系统
CN109449611B (zh) * 2018-11-01 2020-10-27 英华达（上海）科技有限公司 寄生式单极多频可调频天线系统
CN110994134A (zh) * 2019-12-19 2020-04-10 深圳市信维通信股份有限公司 天线结构及移动终端

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