WO2017157004A1 - 一种分集天线 - Google Patents

一种分集天线 Download PDF

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Publication number
WO2017157004A1
WO2017157004A1 PCT/CN2016/101021 CN2016101021W WO2017157004A1 WO 2017157004 A1 WO2017157004 A1 WO 2017157004A1 CN 2016101021 W CN2016101021 W CN 2016101021W WO 2017157004 A1 WO2017157004 A1 WO 2017157004A1
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WO
WIPO (PCT)
Prior art keywords
point
diversity antenna
grounding point
antenna
grounding
Prior art date
Application number
PCT/CN2016/101021
Other languages
English (en)
French (fr)
Inventor
王霖川
薛宗林
熊晓峰
Original Assignee
北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Publication of WO2017157004A1 publication Critical patent/WO2017157004A1/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
    • H01Q1/12—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
    • 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
    • H01Q1/12—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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot 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
    • 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
    • H01Q5/335—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 at the feed, e.g. for impedance matching
    • 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
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • H01Q5/364—Creating multiple current paths
    • H01Q5/371—Branching current paths
    • 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
    • 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
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
    • 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
    • H01Q9/42—Resonant 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

Definitions

  • the present application relates to an antenna, and more particularly to a full-band diversity antenna.
  • the working frequency needs to cover from 700MHz to 2690MHz.
  • the bandwidth will still be very limited, especially the low frequency band where the current band is not common. The effect will be poor, so it is still necessary to additionally arrange the lines in other places inside the mobile phone to meet the required frequency bands, and these additional arranged lines can only be placed in the non-frame area, so the efficiency of the generated resonant frequency is bound to be poor.
  • the present disclosure provides an all-metal mobile phone diversity antenna capable of covering the entire frequency band of 700 MHz to 2690 MHz.
  • a diversity antenna is applied to a mobile terminal of a metal body, the antenna includes a feeding point, a first grounding point, and a second grounding point, the metal machine
  • the body includes a body and a receiving area located above the body, the receiving area is a frame-shaped structure with a broken side at the side, and the feeding point, the first grounding point and the second grounding point are all set in the machine
  • a body element is connected in series with a capacitive component connected to the frame structure, and a switch is arranged in series on the first grounding point, and the distance between the feeding point and the broken seam is 3 mm. -15mm.
  • the capacitive component is a variable capacitor; the variable capacitor is used to switch the low frequency of the diversity antenna, and according to the mobile phone environment, the diversity antenna can be high-frequency covered by 1710-2690 MHz by changing different capacitance values.
  • the switch is a single pole single throw switch or a single pole double throw; the single pole double throw switch is used to switch the low frequency of the diversity antenna.
  • the low frequency works at 824-960 MHz, and when disconnected, the low frequency works at 700-820 MHz.
  • the first ground point and the second ground point are disposed on the same side of the feeding point.
  • the first grounding point is disposed between the second grounding point and the feeding point.
  • the total path length of the feeding point and the first grounding point is less than a half wavelength of 800 MHz-960 MHz.
  • the total path length of the feed point and the second ground point is less than a half wavelength of 700 MHz-800 MHz.
  • the capacitor is a floating setting.
  • the frame structure has a slit on both sides.
  • FIG. 1 is a schematic structural diagram of a diversity antenna according to an exemplary embodiment.
  • first, second, third, etc. may be used to describe various information in this application, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as the second information without departing from the scope of the present application.
  • second information may also be referred to as the first information.
  • word "if” as used herein may be interpreted as "when” or “when” or “in response to a determination.”
  • a diversity antenna of the present application is applied to a mobile terminal of a metal body, and the antenna includes a feeding point 1, a first grounding point 2, and a second grounding point 3.
  • the metal body The utility model comprises a fuselage body 4 and a receiving area 5 located above the fuselage body.
  • the receiving area is a frame-shaped structure with a slit 50 on the side, the feeding point 1, the first grounding point 2 and the second grounding point. 3 is disposed on the fuselage body 4, the capacitor point 1 is connected in series with a capacitive element 6 connected to the frame structure, and the first grounding point 2 is provided with a switch 7 connected in series, the feeding
  • the distance between point 1 and the slit 50 is 3 mm to 15 mm.
  • the capacitive component 6 is a tuning component, and is generally configured as a variable capacitor that is connected to a top frame of the frame structure; the variable capacitor is used to switch the low frequency of the diversity antenna, and enables the mobile phone to be used according to an immediate use environment. Different capacitance values are changed, thus effectively ensuring that the diversity antenna has a high frequency coverage of 1710-2690 MHz.
  • the switch is a single pole single throw switch or a single pole double throw; it is used to switch the low frequency of the diversity antenna.
  • the low frequency working frequency is 824-960 MHz, which can be called the first low frequency, and when the switch is off, the low frequency works.
  • the frequency of 700-820 MHz can be referred to as the second low frequency.
  • the first grounding point 2 and the second grounding point 3 are disposed on the same side of the feeding point 1, and the first grounding point 2 is disposed between the second grounding point 3 and the feeding point 1, the feeding
  • the total path length of the point and the first ground point is less than a half wavelength of 800 MHz-960 MHz, and the total path length of the feeding point and the second ground point is less than a half wavelength of 700 MHz-800 MHz; in actual design, the adjustment may be
  • the distance between the grounding point and the feeding point is adjusted to adjust the first low frequency operating frequency
  • the second low frequency operating frequency is adjusted by adjusting the distance between the second grounding point and the feeding point.
  • the capacitor is suspended, and one end of the capacitor can be fixed on the top frame of the frame structure by screws and nuts, or can be integrally formed on the top frame.
  • the frame-shaped structure is provided with slits on both sides, which can fully utilize the break of the mobile phone for radiation, can effectively reduce the antenna volume, and ensure the performance of the antenna.

Landscapes

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

Abstract

本公开提供一种分集天线，应用在金属机身的移动终端上，所述天线包括馈电点、第一接地点及第二接地点，所述金属机身包括机身本体及位于机身本体上方的收容区，所述收容区为侧边设有断缝的框形结构，所述馈电点、第一接地点及第二接地点均设置在机身本体上，所述馈电点上串联设有一与框形结构相接的容性元件，所述第一接地点上串联设有开关，所述馈电点与断缝之间的距离为3mm-15mm，本公开通过引入容性调谐元件、单刀单/双掷开关，为天线带来了可调的特性，可以最大化的使用金属边框作为天线的辐射体，通过可调器件对谐振频率进行调节，从而覆盖700-2690MHz全频段，提高了天线性能。 (图1)

Description

一种分集天线
本申请基于申请号为201610151249.1、申请日为2016年03月16日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及一种天线，尤其是一种全频段的分集天线。
背景技术
现在手机中的金属元素越来越多，全金属机身逐渐成为手机外观的主流，而金属的增多，会导致天线净空的减小，影响天线向外辐射和接收信号，这对天线设计提出了挑战。
从单个天线性能的角度考虑，净空越大、天线周边的环境中金属越少，性能就会越好，所以对于金属边框手机，如果能够将边框作为天线的一部分进行辐射，则可以实现较好的性能。
对于传统的LTE小天线，工作频率需要从700MHz覆盖到2690MHz全频段，一般情况下，即便使用手机金属边框作为天线的一部分辐射，带宽依然会非常有限，尤其是目前使用波段并不普遍的低频段效果会较差，因此仍然需要在手机内部其它地方额外布置线路，才能满足覆盖所需频段，而这些额外布置的线路只能设置在非边框的区域，因此所产生的谐振频率的效率势必会差些。
因此为了满足全频段都能良好使用，需要一种新型设计的天线。
发明内容
为克服相关技术中存在的问题，本公开提供一种能覆盖700MHz～2690MHz全频段的全金属机身手机分集天线。
具体地，本申请是通过如下技术方案实现的：一种分集天线，应用在金属机身的移动终端上，所述天线包括馈电点、第一接地点及第二接地点，所述金属机身包括机身本体及位于机身本体上方的收容区，所述收容区为侧边设有断缝的框形结构，所述馈电点、第一接地点及第二接地点均设置在机身本体上，所述馈电点上串联设有一与框形结构相接的容性元件，所述第一接地点上串联设有开关，所述馈电点与断缝之间的距离为3mm-15mm。
可选的，所述容性元件为可变电容；可变电容用于切换分集天线的低频，根据手机环境，通过变化不同的电容值，可以使分集天线高频覆盖1710-2690MHz。
可选的，所述开关为单刀单掷开关或单刀双掷；单刀双掷开关用于切换分集天线的低频，闭合时，低频工作在824-960MHz，断开时，低频工作在700-820MHz。
可选的，所述第一接地点与第二接地点设置在馈电点的同侧。
可选的，所述第一接地点设置在第二接地点与馈电点之间。
可选的，所述馈电点与第一接地点的总路径长度小于800MHz-960MHz的半波长。
可选的，所述馈电点与第二接地点的总路径长度小于700MHz-800MHz的半波长。
可选的，所述电容为悬空设置。
可选的，所述框形结构两侧边均设有断缝。
附图说明
图1是根据一示例性实施例示出的一种分集天线结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本申请的一些方面相一致的装置和方法的例子。
在本申请使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本申请可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本申请范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
请参考图1所示，本申请一种分集天线，应用在金属机身的移动终端上，所述天线包括馈电点1、第一接地点2及第二接地点3，所述金属机身包括机身本体4及位于机身本体上方的收容区5，所述收容区为侧边设有断缝50的框形结构，所述馈电点1、第一接地点2及第二接地点3均设置在机身本体4上，所述馈电点1上串联设有一与框形结构相接的容性元件6，所述第一接地点2上串联设有开关7，所述馈电点1与断缝50之间的距离为3mm-15mm。
所述容性元件6为调谐元件，通常设置成可变电容，其与框形结构的顶框相接；所述可变电容用于切换分集天线的低频，能够使手机根据即时的使用环境，变化不同的电容值，从而有效保证分集天线高频覆盖1710-2690MHz。
所述开关为单刀单掷开关或单刀双掷；其用于切换分集天线的低频，当开关闭合时，低频工作频率为824-960MHz可称为第一低频频率，当开关断开时，低频工作频率为700-820MHz可称为第二低频频率。
所述第一接地点2与第二接地点3设置在馈电点1的同侧，且所述第一接地点2设置在第二接地点3与馈电点1之间，所述馈电点与第一接地点的总路径长度小于800MHz-960MHz的半波长，所述馈电点与第二接地点的总路径长度小于700MHz-800MHz的半波长；在实际的设计中，可以通过调整第一接地点与馈电点的距离来调整第一低频工作频率，通过调整第二接地点与馈电点的距离来调整第二低频工作频率。
所述电容为悬空设置，电容的一端可通过螺丝与螺母固定在框形结构的顶框上，也可直接一体成型在顶框上。
所述框形结构两侧边均设有断缝，可以充分利用手机断缝进行辐射，能有效减少天线体积，并保证天线的使用性能。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请保护的范围之内。

Claims (9)

  1. 一种分集天线，应用在金属机身的移动终端上，其特征在于，所述天线包括馈电点、第一接地点及第二接地点，所述金属机身包括机身本体及位于机身本体上方的收容区，所述收容区为侧边设有断缝的框形结构，所述馈电点、第一接地点及第二接地点均设置在机身本体上，所述馈电点上串联设有一与框形结构相接的容性元件，所述第一接地点上串联设有开关，所述馈电点与断缝之间的距离为3mm-15mm。
  2. 如权利要求1所述的分集天线，其特征在于，所述容性元件为可变电容。
  3. 如权利要求2所述的分集天线，其特征在于，所述开关为单刀单掷开关或单刀双掷。
  4. 如权利要求1所述的分集天线，其特征在于，所述第一接地点与第二接地点设置在馈电点的同侧。
  5. 如权利要求4所述的分集天线，其特征在于，所述第一接地点设置在第二接地点与馈电点之间。
  6. 如权利要求1至5任一项所述的分集天线，其特征在于，所述馈电点与第一接地点的总路径长度小于800MHz-960MHz的半波长。
  7. 如权利要求1至5任一项所述的分集天线，其特征在于，所述馈电点与第二接地点的总路径长度小于700MHz-800MHz的半波长。
  8. 如权利要求1至5任一项所述的分集天线，其特征在于，所述电容为悬空设置。
  9. 如权利要求8所述的分集天线，其特征在于，所述框形结构两侧边均设有断缝。
PCT/CN2016/101021 2016-03-16 2016-09-30 一种分集天线 WO2017157004A1 (zh)

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CN201610151249.1 2016-03-16
CN201610151249.1A CN107204511B (zh) 2016-03-16 2016-03-16 一种分集天线

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US10122070B2 (en) 2018-11-06
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