WO2009089756A1 - Wireless terminal antenna - Google Patents

Wireless terminal antenna Download PDF

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Publication number
WO2009089756A1
WO2009089756A1 PCT/CN2008/073808 CN2008073808W WO2009089756A1 WO 2009089756 A1 WO2009089756 A1 WO 2009089756A1 CN 2008073808 W CN2008073808 W CN 2008073808W WO 2009089756 A1 WO2009089756 A1 WO 2009089756A1
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WO
WIPO (PCT)
Prior art keywords
wireless terminal
pull rod
terminal antenna
antenna
metal shield
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2008/073808
Other languages
English (en)
French (fr)
Inventor
Yanping Xie
Shaoqing Chen
Ping LEI
Yongling Ban
Shuhui Sun
Yao LAN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Device Shenzhen Co Ltd
Original Assignee
Shenzhen Huawei Communication Technologies Co Ltd
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 Shenzhen Huawei Communication Technologies Co Ltd filed Critical Shenzhen Huawei Communication Technologies Co Ltd
Priority to EP08871078A priority Critical patent/EP2234209B1/en
Priority to ES08871078T priority patent/ES2400258T3/es
Publication of WO2009089756A1 publication Critical patent/WO2009089756A1/zh
Priority to US12/825,042 priority patent/US20100283693A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/32—Vertical arrangement of element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/08—Means for collapsing antennas or parts thereof
    • H01Q1/10—Telescopic elements

Definitions

  • the present invention relates to a wireless terminal antenna technology, and in particular, to an antenna structure of a wireless terminal.
  • wireless terminals such as wireless network cards, digital television (Digital Videl Broadcasting, DVB) cards, mobile phones, etc.
  • the antennas of wireless terminals also need to match the appearance of wireless terminals for miniaturization. While miniaturizing the antenna, it is necessary to maintain the performance of the antenna. This is a problem that needs to be solved at present.
  • various wireless portable terminals wireless data cards, DVB cards, etc. that receive digital TV programs are increasingly popular in the market.
  • the main challenge in achieving wireless reception of digital television signals on a portable terminal is the design of a wideband antenna that can simultaneously cover DVB-V (170 MHz to 240 MHz) and DVB-U (470 MHz to 860 MHz) bands.
  • DVB-V 170 MHz to 240 MHz
  • DVB-U 470 MHz to 860 MHz
  • the miniaturization, portability, and performance of the antenna are the problems that need to be solved.
  • a wireless terminal antenna includes a pull rod, a pull rod base located at a bottom of the pull rod, and a spiral turn, and one end of the spiral turn is electrically connected to the pull rod base.
  • the pull rod is axially slidable and stretched along the base of the drawbar, and is contracted and received in a space surrounded by the spiral weir.
  • the drawbar is accommodated in the spiral , to reduce the height and is convenient to carry.
  • the signal is normally received, pull the lever out.
  • the antenna is kept compact while being compact and portable.
  • Figure 1 is a schematic diagram showing the structure of a digital television (DVB) antenna when not in operation;
  • DVD digital television
  • Figure 2 is a schematic diagram of the structure of a digital television antenna that pulls the drawbar out of the conical chassis during operation;
  • Figure 3 is a schematic view of the structure of the multi-layer cable structure;
  • Figure 4 is a schematic view showing the structure of a multilayer cable structure.
  • the embodiment of the invention provides a portable wireless terminal antenna, which comprises a pull rod and a spiral raft.
  • the pull rod slides and contracts along the axial direction of the pull rod base, and is contracted and received in a space surrounded by the spiral raft.
  • the drawbar is housed in a spiral raft to reduce the height and is convenient to carry.
  • pull the lever out Taking the DVB antenna as an example, when the cable is not working, the drawbar is housed in the helical antenna, and the total height of the chassis outside the tie rod and the spiral turns can be controlled within 70 mm. When the antenna is working, the total height of the drawbar and the chassis can be controlled at 180 mm. Within.
  • the embodiment of the present invention is described by taking a portable digital television (DVB) antenna as an example.
  • the DVB antenna of the embodiment includes: a tapered spiral ⁇ 20, a pull rod 30 and a pull rod base 35 at the bottom of the pull rod 30.
  • the spiral cymbal 20 is electrically connected to the shank base 35.
  • the electrical connection is made by welding, or by a shrapnel connection or the like.
  • the DVB antenna may further include a conical chassis 10 that is a non-conductive cavity that encloses the spiral turns 20 for protection and support.
  • the tapered chassis 10 can be fixed to the tie rod base 35, or can be in other forms such that the tapered chassis 10 can wrap the spiral turns as a support for the antenna.
  • the tapered chassis 10 is made of a non-conductive material such as plastic.
  • the DVB antenna may also include a specially processed multiplexed multi-layer cable 40.
  • the structure of the multilayer cable 40 can be seen in Figures 3 and 4.
  • the multilayer cable 40 has three layers of conductors: the innermost conductor is the inner core conductor 41, the second layer is the metal shield layer 42, and the first metal shield layer 42 is specific.
  • the form may be a wire shielding mesh; the third layer is also a metal shielding layer 43.
  • the metal shielding layer 43 may be a wire shielding mesh.
  • the metal inner core conductor 41 and the second metal shield layer 42 and the second metal shield layer 42 and the third metal shield layer 43 are filled with a medium 44, and the outer two metal shield layers 42 and 43 are One end is electrically connected.
  • the inner core conductor 41 at the end of the multilayer cable 40 is connected to the bottom of the tapered spiral weir 20, and the third metal shield layer 43 is cut at a certain length (opening of the microwave characteristic) according to the length of the multilayer cable 40.
  • the dimensions are determined by commissioning and then converted to a conventional coaxial structure, i.e., only the inner core conductor 41 and a metal shield.
  • the pull rod 30 is contracted and received in the space enclosed by the spiral cymbal 20, and when the digital television signal is normally received, the pull rod 30 is pulled out.
  • the whip antenna 50 can adopt a common pull rod structure, and the pull rod 30 of the whip antenna 50 can slide down along the pull rod base 35 to accommodate the pull rod 30 in the space enclosed by the spiral turn 20 .
  • tapered helix and tapered chassis are only a preferred embodiment.
  • the tapered chassis is easy to carry and use, and the upper and lower wide structures are both aesthetically pleasing and advantageous for stable placement.
  • Other shapes such as cylindrical helix or cylindrical chassis, cube or cuboid spiral helix or chassis are also alternatives.
  • the DVB antenna disclosed in this embodiment can cover both DVB-V (170MHz ⁇ 240MHz) and DVB-U (470MHz ⁇ 860MHz) frequency bands, and has the advantages of convenient carrying, low height and high electrical performance.
  • the DVB antenna can also be applied to the design of antennas in other frequency bands, such as FM antennas, GSM antennas, WCDMA antennas, etc., which will not be described here.

Landscapes

  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)

Description

一种无线终端天线
本申请要求于 2007 年 12 月 28 日提交中国专利局、 申请号为 200720196651.8、 发明名称为"一种无线终端天线"的中国专利申请的优先权， 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线终端天线技术， 尤其涉及一种无线终端的天线结构。
背景技术
无线终端， 如无线上网卡、 数字电视 (Digital Videl Broadcasting, DVB)卡， 手机等产品的小型化是目前的一个趋势，无线终端的天线也需要配合无线终端 的外型， 进行小型化的设计。 天线在小型化的同时， 还要保持天线的性能， 这 是目前需要研究解决的问题。 如： 随着数字电视标准的实施， 各种具有接收数 字电视节目的无线便携终端 （无线数据卡、 DVB卡等）越来越受到市场的欢 迎。而要在一款便携式终端上实现无线接收数字电视信号的主要挑战在于可同 时覆盖 DVB-V ( 170MHz ~ 240MHz )和 DVB-U ( 470MHz ~ 860MHz )频段的 宽频带天线的设计。 目前市场上的 DVB天线方案主要有两种： 一种是长度偏 长的单极子天线， 长度 390mm左右， 这种天线体积太大， 携带不方便， 无法 满足小型化的需求； 第二种是有源天线， 长度在 150mm左右， 这种天线需要 供电， 应用受到限制。
综上所述， 天线的小型化、便携化并保持天线的性能， 是目前需要解决的 问题。
发明内容
本发明实施例的目的在于提供一种便携、 小型化的无线终端天线。
本发明实施例提供的一种无线终端天线， 包括拉杆，位于拉杆的底部的拉 杆底座， 螺旋线圏， 所述螺旋线圏一端与拉杆底座电性连接。 拉杆沿拉杆底座 轴向滑动伸缩， 收缩收容于螺旋线圏所围成的空间中。 平时不工作时， 拉杆收 容于在螺旋线圏里， 以降低高度， 方便携带。 而当正常接收信号时， 将拉杆拉 出。 在实现天线小型化、 便携的同时， 保持天线的性能。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施 例或现有技术描述中所需要使用的附图作简单的介绍，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 出创造性劳动性的前提下， 还可以根据这些附图获得其他的附图。
图 1为不工作时的数字电视（DVB )天线结构示意图；
图 2 为工作时将拉杆从锥形底盘中拉出的数字电视天线结构示意图； 图 3为多层电缆结构的结构示意图；
图 4为多层电缆结构的结构示意图。
具体实施方式
下面将结合本实用实施例中的附图，对本发明实施例中的技术方案进行清 楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 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作出创造 性劳动前提下所获得的所有其他实施例， 都属于本发明保护的范围。
下面结合附图对本发明的具体实施例进行说明：
本发明实施例提供一种便携式无线终端天线 , 包括拉杆和螺旋线圏 ,拉杆 沿拉杆底座轴向滑动伸缩， 收缩收容于螺旋线圏所围成的空间中。平时不工作 时，拉杆收容于在螺旋线圏里， 以降低高度， 方便携带。 而当正常接收信号时， 将拉杆拉出。 以 DVB天线为例， 在不工作时候， 拉杆收容于螺旋天线中， 拉 杆和螺旋线圏外部的底盘总的高度可控制在 70mm以内，在天线工作时，拉杆 和底盘总的高度可控制在 180mm以内。
下面结合附图对本发明实施例进行说明。
本发明实施例以便携式数字电视（DVB )天线为例进行说明。 请参见图 1 及图 2, 本实施例所述的 DVB天线包括： 一个锥形的螺旋线圏 20、 一个拉杆 30及位于拉杆 30底部的拉杆底座 35。 螺旋线圏 20与拉杆底座 35电性连接， 优选地， 其电性连接的方式可以采用焊接， 或弹片连接等。
所述 DVB天线还可以进一步包括一锥形底盘 10, 该底盘 10为非导电腔 体， 包裹螺旋线圏 20, 起保护、 支撑作用。 锥形底盘 10可与拉杆底座 35固 接， 也可以其他形式， 使锥形底盘 10能包裹螺旋线圏， 作为天线的支撑部。 锥形底盘 10采用不导电的材料， 如塑料等。
此外 , 所述 DVB天线还可以包括一段经过特殊处理的外接多层电缆 40。 多层电缆 40的结构可参见图 3和图 4, 该多层电缆 40具有三层导体： 最里面 的为内芯导体 41 , 第二层为金属屏蔽层 42, 第一金属屏蔽层 42的具体形式可 以是金属丝屏蔽网； 第三层也为金属屏蔽层 43 , 同样的， 该金属屏蔽层 43可 以是金属丝屏蔽网。金属内芯导体 41和第二层金属屏蔽层 42之间， 以及第二 层金属屏蔽层 42和第三层金属屏蔽层 43之间都用介质 44填充， 外面两层金 属屏蔽层 42、 43的一端电性连接。 多层电缆 40—端的内芯导体 41与锥形螺 旋线圏 20的底部连接在一起， 第三层金属屏蔽层 43在某一长度处截断（微波 特性开路），该长度根据多层电缆 40的尺寸由调试确定， 然后转变为常规同轴 线结构， 即只有内芯导体 41和一层金属屏蔽层。 天线在平时不工作时， 拉杆 30收缩收容于螺旋线圏 20所围成的空间里， 而当正常接收数字电视信号时， 将拉杆 30拉出。 拉杆天线 50可采用普通的拉杆结构， 拉杆天线 50的拉杆 30 可沿拉杆底座 35向下滑动， 使拉杆 30收容于螺旋线圏 20围成的空间中。
上述采用锥形的螺旋线圏、锥形的底盘仅仅是一种优选的实施例，锥形的 底盘便于携带、 使用， 上尖下宽的结构既美观， 有有利于稳定放置。 其他形状 如圆柱形螺旋线圏或圆柱形底盘、立方体或长方体形螺旋线圏或底盘等也是可 选的替代方案。
本实施例中所揭露的 DVB天线 ,可同时覆盖 DVB-V( 170MHz ~ 240MHz ) 和 DVB-U ( 470MHz ~ 860MHz ) 两个频段， 并且具有方便携带、 低高度、 高 电气性能等优点。
上述实施例以 DVB 天线作为实例进行说明， 但这样的结构也不局限于
DVB天线，也可应用于其他频段天线的设计，如 FM天线， GSM天线， WCDMA 天线等等， 此不赘述。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通 技术人员来说， 在不脱离本发明原理的前提下， 还可以做出若干改进和润饰， 这些改进和润饰也应视为本发明的保护范围。

Claims

权 利 要 求
1、 一种无线终端天线， 其特征在于， 包括：
拉杆；
拉杆底座， 位于拉杆的底部；
螺旋线圏 , 所述螺旋线圏一端与所述拉杆底座电性连接；
所述拉杆沿拉杆底座轴向滑动伸缩，收缩收容于所述螺旋线圏所围成的空 间中。
2、 如权利要求 1所述的无线终端天线， 其特征在于： 所述无线终端天线 进一步包括底盘， 该底盘为非导电腔体， 并将所述螺旋线圏包含其中。
如权利要求 2所述的无线终端天线， 其特征在于： 底盘呈现锥形。 如权利要求 1所述的无线终端天线， 其特征在于： 所述螺旋线圏呈锥
Figure imgf000006_0001
如权利要求 1所述的无线终端天线， 其特征在于： 所述无线终端天线 为数字电视天线。
6、 如权利要求 1所述的无线终端天线， 其特征在于： 所述无线终端天线 进一步包括电缆，所述电缆结构一端的内芯导体与所述螺旋线圏的底部电性连 接。
7、 如权利要求 6所述的无线终端天线， 其特征在于： 所述电缆具有三层 导体： 最里面的为内芯导体， 第二层为金属屏蔽层， 第三层也为金属屏蔽层， 第二层金属屏蔽层和第三层金属屏蔽层之间用介质填充，第二层为金属屏蔽层 和第三层金属屏蔽层一端电性连接。
8、 如权利要求 1所述的无线终端天线， 其特征在于： 第三层金属屏蔽层 在预定长度处截断。
PCT/CN2008/073808 2007-12-28 2008-12-29 Wireless terminal antenna Ceased WO2009089756A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08871078A EP2234209B1 (en) 2007-12-28 2008-12-29 Wireless terminal antenna
ES08871078T ES2400258T3 (es) 2007-12-28 2008-12-29 Antena de terminal inalámbrico
US12/825,042 US20100283693A1 (en) 2007-12-28 2010-06-28 Wireless Terminal Antenna

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200720196651.8 2007-12-28
CNU2007201966518U CN201138685Y (zh) 2007-12-28 2007-12-28 一种无线终端天线

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/825,042 Continuation US20100283693A1 (en) 2007-12-28 2010-06-28 Wireless Terminal Antenna

Publications (1)

Publication Number Publication Date
WO2009089756A1 true WO2009089756A1 (en) 2009-07-23

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Application Number Title Priority Date Filing Date
PCT/CN2008/073808 Ceased WO2009089756A1 (en) 2007-12-28 2008-12-29 Wireless terminal antenna

Country Status (5)

Country Link
US (1) US20100283693A1 (zh)
EP (1) EP2234209B1 (zh)
CN (1) CN201138685Y (zh)
ES (1) ES2400258T3 (zh)
WO (1) WO2009089756A1 (zh)

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