WO2016000155A1 - 无缝封闭框体天线及无线通信设备 - Google Patents

无缝封闭框体天线及无线通信设备 Download PDF

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Publication number
WO2016000155A1
WO2016000155A1 PCT/CN2014/081224 CN2014081224W WO2016000155A1 WO 2016000155 A1 WO2016000155 A1 WO 2016000155A1 CN 2014081224 W CN2014081224 W CN 2014081224W WO 2016000155 A1 WO2016000155 A1 WO 2016000155A1
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WO
WIPO (PCT)
Prior art keywords
antenna device
antenna
current loop
wireless communication
closed frame
Prior art date
Application number
PCT/CN2014/081224
Other languages
English (en)
French (fr)
Inventor
王家明
张瑞
杨小丽
侯猛
张学飞
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP14896805.0A priority Critical patent/EP3079201A4/en
Priority to US15/118,276 priority patent/US10079427B2/en
Priority to KR1020167020655A priority patent/KR20160102563A/ko
Priority to PCT/CN2014/081224 priority patent/WO2016000155A1/zh
Priority to CN201480079579.3A priority patent/CN106463829A/zh
Publication of WO2016000155A1 publication Critical patent/WO2016000155A1/zh

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Classifications

    • 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
    • H01Q1/44—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
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/10—Resonant 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
    • H01Q5/342—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
    • 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
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • 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 invention relates to the field of antenna technologies, and in particular, to a seamless enclosed frame antenna and a wireless communication device.
  • wireless communication is an essential component of wireless communication terminals.
  • the level of antenna performance will be related to the wireless communication performance of wireless communication terminals.
  • the antenna performance of mobile phones will affect the quality of mobile phone users.
  • metal has a great influence on the performance of wireless communication terminal antennas. Therefore, designing high-performance antennas based on metal appearance has become a research topic in the industry.
  • a side of the closed frame of the wireless communication terminal is slotted, the RF feeder is fed with excitation at the slot, and the closed frame is used to form a loop antenna.
  • the wireless communication terminal is usually used by the user, and the above-mentioned closed frame is used to form the loop antenna wireless communication terminal, the field intensity radiated by the antenna is strong at the slit of the closed frame, when the user's hand holds the slit.
  • the antenna resonates, the frequency deviation occurs, which causes the antenna performance to drop sharply. For example, when a mobile phone user uses a mobile phone to make a call, the mobile phone user's hand holds the slot of the slotted antenna, and a call will occur during the call. Pause and other phenomena, which affect the user experience.
  • an antenna device includes: a power feeding portion; a ground portion;
  • the power feeding unit and the grounding portion are electrically connected to the closed frame body, and the closed frame body and the feeding portion and the grounding portion form a first current loop and a second current loop, and the first current loop and The second current loop forms a resonance.
  • the first current loop impedance effect is an inductor L
  • the second current loop impedance effect is a capacitor C
  • the first current loop and the second current loop are formed.
  • the first current loop length is less than a quarter wavelength
  • the second current loop length is greater than a quarter wavelength Below one-half wavelength
  • the antenna device further includes at least one metal Branch section.
  • the at least one metal branch is disposed on a feeder.
  • the at least one metal branch is disposed on the closed enclosure.
  • the at least one metal branch is connected with an adjustment switch or a adjustable capacitor
  • the antenna impedance of the antenna device can be adjusted by the adjustment switch or the adjustable capacitor.
  • the metal branch is connected to the closed frame by a spring piece or a pogo pin Pogo-Pin.
  • the power feeding part includes a matching circuit, and the matching circuit is used to adjust the resonance. frequency.
  • the feeding part and the grounding part are a transitional design of a conductive material, a conductive structural part, a sensing element of a distributed parameter set parameter, and a distributed parameter One of them.
  • a wireless communication terminal includes the above antenna device.
  • the wireless communication terminal is a mobile phone or a tablet computer.
  • the antenna device and the wireless communication terminal do not need to open the closed frame of the wireless communication terminal that makes the metal appearance, and use the position of the RF feeder feeding portion to reduce the closed frame.
  • the at least one metal branch can effectively transfer the strongest part of the antenna to the area that is difficult for the human hand to grasp, thereby reducing the deterioration of the antenna performance of the human body. influences.
  • by extending the connection of at least one metal branch to the enclosed frame it is easier to extend the antenna form, so that the antenna has better wide-band performance.
  • FIG. 1 is a schematic structural view of an antenna device according to a first embodiment of the present invention
  • FIG. 3 is a schematic diagram showing resonance of an antenna in a first embodiment of the present invention.
  • FIGS. 4a-4b are schematic views of an antenna device in a second embodiment of the present invention.
  • FIG. 5 is an equivalent effect diagram of an antenna device in a low frequency band in a second embodiment of the present invention
  • FIG. 6 is a resonance diagram of an LC parallel circuit
  • Figure 7 is an equivalent effect diagram of an antenna device in a second embodiment of the present invention.
  • FIGS. 8a-8b are schematic views of an antenna device in a third embodiment of the present invention.
  • Figure 9 is a schematic diagram of the resonance of the LC series circuit
  • 10a-10c are schematic views of an antenna device in a fourth embodiment of the present invention.
  • An antenna device for a wireless communication terminal having a closed enclosure 101 includes a power feeding portion 102, a ground portion 104, the power feeding portion 102, and a ground portion.
  • the two sides opposite to the closed enclosure frame 101 are electrically connected to each other, and the feeding portion 102 and the grounding portion 104 divide the closed enclosure frame into the first portion 1011 and the second portion.
  • the first current loop and the second current loop can be understood as a first loop antenna and a second loop antenna, and L2 and L3 are the circumferences of the first loop antenna and the second loop antenna, respectively.
  • the antenna device scheme shown in Fig. 1 can realize the closed frame antenna equivalent model of the LC parallel circuit shown in Fig. 2. With a loop antenna with L2 and L3 as the circumference, two working resonances f 2 and f 3 can be formed in the high frequency band, as shown in Fig. 3.
  • the resonance can be realized at a high frequency by simply relying on the first loop antenna and the second loop antenna, but it is difficult to form a usable resonance at a low frequency.
  • the second embodiment of the present invention is as shown in Fig. 4a.
  • a low frequency branch 107 is applied to the feed line of the antenna.
  • the design of itself is to achieve good low frequency resonance. The ideal situation is shown in Figure 7, which is equivalent to no closed frame.
  • the low-frequency branch set on the RF feeder is only an example.
  • the length, structure, and number of the low-frequency branches are not limited, and can be adjusted according to the electrical performance requirements of the antenna.
  • two metal branches are disposed on the RF feeder.
  • the metal branch may also be an adjustable metal branch.
  • the metal branch is connected with an adjustment switch or a tunable capacitor, so that the antenna impedance of the antenna device can be adjusted by adjusting the metal branch.
  • the antenna device provided in the second embodiment of the present invention does not need to open the closed frame of the wireless communication terminal that makes the metal appearance, and uses the position of the RF feeder feeding portion to reduce the closed environment caused by the closed frame without the opening of the antenna.
  • the effect of the performance, at the same time, through the metal branch set on the feeder can effectively transfer the most radiated part of the antenna to the area that is difficult for the human hand to grasp, thereby reducing the influence of the human body on the deterioration of the antenna performance, and
  • the device is a combination of a closed frame and a metal branch, so that the antenna form is easy to expand, and can adapt to the performance requirements of the wireless communication terminal for the wide band of the antenna.
  • the antenna provided in the second embodiment is provided with a metal branch on the RF feed line.
  • the antenna device provided in the third embodiment of the present invention is provided with a metal branch 108 on the closed closed frame 101.
  • Low-frequency branches 108 At the end of the trace, the electric field tends to be the strongest, and can be adjusted to areas that are not easily held by the hand, thus reducing the human body's influence.
  • the above-mentioned low-frequency branch disposed on the closed frame is only an example, and the length, structure, and number of the low-frequency branches are not limited, and can be adjusted according to the electrical performance requirements of the antenna.
  • the metal branch may also be an adjustable metal branch, such that the antenna impedance of the antenna device can be adjusted by adjusting the metal branch.
  • the antenna device provided in the third embodiment of the present invention does not need to open the closed frame of the wireless communication terminal that makes the metal appearance, and uses the position of the RF feeder feeding portion to reduce the radiation performance of the closed environment caused by the closed frame without the slit.
  • the metal branches arranged on the closed closed frame the most radiating part of the antenna can be effectively transferred to the area that is difficult for the human hand to grasp, thereby reducing the influence of the human body on the deterioration of the antenna performance, and
  • the antenna device is a combination of a closed frame and a metal branch, so that the antenna form is easy to expand and can be adapted.
  • the performance requirements of the wideband of the antenna should be met by the wireless communication terminal.
  • the antenna device provided in the fourth embodiment of the present invention is provided with a metal branch 107 on the RF feed line, and a metal branch 108 is disposed on the closed frame.
  • a metal branch 107 on the RF feed line
  • a metal branch 108 is disposed on the closed frame.
  • the impedance effects C and L of the first loop antenna and the second loop antenna are in the low frequency band, when the fl constitutes an open state, the impedance effects of the closed frame on the low frequency branches 107 and 108 are eliminated, so that the low frequency branch can be utilized
  • the 107 and 108 are designed to achieve good low frequency resonance.
  • the electric field is always strong, and can be adjusted to an area that is not easily held by the hand, thereby reducing the influence of the human body.
  • the low-frequency branch of the above-mentioned setting on the RF feeder or the closed frame is only an example.
  • the length, structure and quantity of the low-frequency branch are not limited, and can be adjusted according to the electrical performance requirements of the antenna.
  • the metal branch may also be an adjustable metal branch.
  • the metal branch is connected with an adjustment switch or an adjustable capacitor, so that the antenna impedance of the antenna device can be adjusted by adjusting the metal branch.
  • the antenna device provided in the third embodiment of the present invention does not need to open the closed frame of the wireless communication terminal that makes the metal appearance, and uses the position of the RF feeder feeding portion to reduce the radiation performance of the closed environment caused by the closed frame without the slit.
  • the metal branches arranged on the closed closed frame the most radiating part of the antenna can be effectively transferred to the area that is difficult for the human hand to grasp, thereby reducing the influence of the human body on the deterioration of the antenna performance, and
  • the antenna device is a combination of a closed frame and a metal branch, so that the antenna form is easy to expand, and can adapt to the performance requirements of the wireless communication terminal for the wide band of the antenna.
  • the position of the connection point between the metal branch and the closed frame and the RF feed line is not limited, and is specifically adjusted according to the electrical performance of the antenna.
  • the connection manner of the metal branch to the closed frame and the RF feed line is also not limited, and may be connected by a metal dome connection or a Pogo-Pin connection.
  • the manner in which the power feeding portion and the grounding portion are electrically connected to the closed and closed frame body is not limited, and may be various conductive materials such as conductive cloth, conductive foam, etc., or conductive.
  • Structural components such as bullets, welds, etc., or a variety of sensory components that distribute parameters, or transitional designs of distributed parameters.
  • the power feeding unit includes a matching circuit, and the matching circuit is configured to adjust a resonance frequency.
  • Embodiment 4 of the present invention provides a wireless communication terminal, where the wireless communication terminal includes the antenna device described in the above embodiments.
  • the wireless communication communication is a mobile phone or a tablet.
  • the wireless communication terminal provided in the fourth embodiment of the present invention uses the antenna device according to the above embodiments, so that the closed frame of the wireless communication terminal does not need to be slotted, thereby effectively improving the degree of freedom of design of the wireless communication terminal. Simplified structural design.
  • the antenna device of the wireless communication terminal is combined with the metal frame by the closed frame, the antenna form is easy to expand, and can adapt to the performance requirement of the wireless communication terminal for the wide band of the antenna.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)

Abstract

本发明公开了一种天线装置和无线终端。所述天线装置包括：包括：馈电部；接地部；封闭框体，所述封闭框体环框无线终端的主体；所述馈电部、接地部与所述封闭框体电性连接，所述封闭框体与所述馈电部、接地部形成第一电流回路和第二电流回路，所述第一电流回路和第二电流回路形成谐振。本发明实施例提供的天线装置和无线终端，无需对使得金属外观的无线通信终端的封闭框体进行开缝，利用射频馈线馈电部的位置，以减少封闭框体不开缝导致的封闭环境对天线辐射性能的影响，提升天线性能，改善用户体验。

Description

无缝封闭框体天线及无线通信设备
技术领域
本发明涉及天线技术领域，尤其涉及一种无缝封闭框体天线及无线通 信设备。
背景技术
为了增强无线通信终端的品质感， 金属被越来越多地应用到手机的外 观设计中。 无线通讯作为无线设备的必备功能， 天线是无线通信终端必备 的组件， 天线性能的水平会关系到无线通信终端的各项无线通讯性能， 比 如手机的天线性能会影响到手机用户的通话质量。 然而， 基于金属及天线 的固有性能， 金属对无线通信终端天线的性能影响较大， 因此基于金属外 观设计出高性能的天线成为业界的一个研究主题。
现有技术中， 针对具有金属外观设计的无线通信终端， 对无线通信终 端封闭框体的一侧做开缝处理， 射频馈线在开缝处进行馈电激励， 利用封 闭框体， 构成环状天线。 然而， 由于无线通信终端通常是用户手持使用， 而上述利用封闭框体构成环状天线无线通信终端， 天线辐射的场强在封闭 框体的开缝处很强， 当用户的手握住该缝时， 天线工作谐振会发生频偏等 问题， 导致天线性能急剧下降， 例如手机用户在使用手机进行通话时， 手 机用户的手握住开缝天线的缝， 则通话过程中将会发生掉话、 停顿等现象， 从而影响用户的使用体验。
发明内容
本发明实施例提供一种天线装置以及无线通信终端， 可有效地将使用 金属外观的无线通信终端的天线辐射最强部位转移到人手不易握到的区 域， 从而降低人体对天线性能的恶化。 根据本发明的第一方面， 一种天线装置， 包括： 馈电部； 接地部；
封闭框体， 所述封闭框体环框无线终端的主体；
所述馈电部、 接地部与所述封闭框体电性连接， 所述封闭框体与所述 馈电部、 接地部形成第一电流回路和第二电流回路， 所述第一电流回路和 第二电流回路形成谐振。
在第一方面的第一种可能的实现方式中， 所述第一电流回路阻抗效果 为电感 L, 所述第二电流回路阻抗效果为电容 C, 所述第一电流回路与第二 电流回路形成谐振， 谐振频率为 f=l/2 7i V^I。
结合第一方面的第一种可能的实现方式，在第二种可能的实现方式中， 所述第一电流回路长度小于四分之一波长， 所述第二电流回路长度大于四 分之一波长下于二分之一波长。
结合第一方面， 或第一方面的第一种可能的实现方式， 或第一方面的 第二种可能的实现方式， 在第三种可能的实现方式中， 所述天线装置还包 括至少一个金属枝节。
结合第一方面的第三种可能的实现方式，在第四种可能的实现方式中， 所述至少一个金属枝节设置在馈线上。
结合第一方面的第三种可能的实现方式，在第五种可能的实现方式中， 所述至少一个金属枝节设置在所述封闭封闭框体上。
结合第一方面的第四种可能的实现方式， 或第一方面的第五种可能的 实现方式， 在第六种可能的实现方式中， 所述至少一个金属枝节连接有调 节开关或可调电容， 所述天线装置的天线阻抗可通过所述调节开关或可调 电容进行调整。
结合第一方面的第六种可能的实现方式，在第七种可能的实现方式中， 所述金属枝节与所述封闭框体通过弹片或者弹簧针 Pogo-Pin连接。
结合第一方面， 或第一方面的第一种可能的实现方式， 或第一方面的 第二种可能的实现方式， 或第一方面的第三种可能的实现方式， 或第一方 面的第四种可能的实现方式， 或第一方面的第五种可能的实现方式， 或第 一方面的第六种可能的实现方式， 或第一方面的第七种可能的实现方式， 在第八种可能的实现方式中， 所述馈电部包括匹配电路， 所述匹配电路用 于调节谐振频率。
结合第一方面， 或第一方面的第一种可能的实现方式， 或第一方面的 第二种可能的实现方式， 或第一方面的第三种可能的实现方式， 或第一方 面的第四种可能的实现方式， 或第一方面的第五种可能的实现方式， 或第 一方面的第六种可能的实现方式， 或第一方面的第七种可能的实现方式， 或第一方面的第八种可能的实现方式， 在第九种可能的实现方式中， 所述 馈电部、 接地部为导电材料、 导电结构件、 分布参数集种参数的感容元件、 分布参数的过渡设计中的一种。
根据本发明的第二方面， 一种无线通信终端， 包括上述的天线装置。 在第二方面的第一种可能的实现方式中， 所述无线通信终端为手机或 者平板电脑。
从上述方案可以看出，本发明实施例提供的天线装置和无线通信终端， 无需对使得金属外观的无线通信终端的封闭框体进行开缝， 利用射频馈线 馈电部的位置， 以减少封闭框体不开缝导致的封闭环境对天线辐射性能的 影响， 同时， 通过至少一个金属枝节， 可以有效地将天线的辐射最强部位 转移到人手不易握到的区域， 从而降低人体对天线性能的恶化影响。 进一 步的， 通过至少一个金属枝节与封闭框体的连接扩展， 更易于天线形式的 扩展， 使得该天线有更好的宽屏带性能。 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一简单地介绍， 显而易见地， 下面描述中的附图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是本发明第一实施例中天线装置的结构示意图；
图 2是本发明第一实施例中天线装置的等效效果图；
图 3是本发明第一实施例中天线的谐振示意图；
图 4a-4b是本发明第二实施例中天线装置示意图；
图 5是本发明第二实施例中天线装置在低频段的等效效果图； 图 6是 LC并联电路谐振示意图；
图 7是本发明第二实施例中天线装置的等效效果图；
图 8a-8b是本发明第三实施例中天线装置的示意图；
图 9是 LC串联电路谐振示意图；
图 10a-10c是本发明第四实施例中天线装置的示意图。
附图标记：
101-封闭封闭框体， 102-馈电部， 103-射频馈线, 104-接地部， 107-设 置在射频馈线上的金属枝节， 108-设置在封闭封闭框体上的金属枝节。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 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。
本发明的第一实施例提供的用于具有封闭封闭框体 101 的无线通信终 端的天线装置，如图 1所示，包括馈电部 102、接地部 104 ,所述馈电部 102、 接地部 104分别与所述封闭封闭框体 101相对的两条边电性连接， 所述馈 电部 102与接地部 104将所述封闭封闭框体分成第一部分 1011和第二部分 1012 , 所述第一部分 1 011、 馈电部 102及接地部 104形成第一电流回路， 所述第二部分 1 012、 馈电部 102及接地部 104形成第二电流回路， 如图中 L2和 L3所示，上述第一电流回路和第二电流回路可理解为第一环天线和第 二环天线， L2 和 L3 分别为第一环天线和第二环天线的周长。 根据 IFA
(Inverted F Antenna, 倒 F天线） 的传输线等效理论， 当传输线末端短路， 长度小于四分之一波长时， 阻抗等效相当于电感 L， 而当传输线长度大于四 分之一波长但小于二分之一波长时， 阻抗等效为电容<：。所以当选择合适的 第一天线环和第二天线环尺寸， 图 1 所示的天线装置方案就可以实现图 2 所示 LC并联电路的封闭框体天线等效模型。 以 L2和 L3为周长的环天线， 可以在高频段形成两个工作谐振 f 2和 f 3 , 如图 3所示。
从图 2可以看出， 单纯依靠第一环天线和第二环天线， 可以在高频实 现谐振， 但在低频很难形成可用的谐振， 为了实现低频谐振， 本发明实施 例二， 如图 4a所示的天线装置， 在天线的馈线上加一条低频分支 107。
根据 LC并联电路的综合效应， 在其 LC谐振频点 fl 上， fl ==l /2 C *L , 将呈现开路状态， 如图 6所示。 因此， 当第一环天线和第二环天线 在低频段的阻抗效果 C和 L， 在 fl构成开路状态时， 封闭框体对低频分支 107的阻抗影响将被消除， 从而可以凭借低频分支 107走向的自身设计来实 现好的低频谐振， 理想情况如图 7 所示， 相当于没有封闭框体。 低频分支 107走线的末端， 电场往往最强， 可以调整到不易被手握到的区域， 从而减 少人体影响。 上述设置在射频馈线上的低频分支仅是举例， 低频分支的长 度、 结构、 数量不限制， 可以根据天线电性能要求进行调整， 如图 4b示为 在射频馈线上设置有两个金属枝节。 同时， 所述金属枝节也可以为可以调 节的金属枝节， 例如， 所述金属枝节连接有调节开关或可调电容， 这样， 所述天线装置的天线阻抗可通过调节所述金属枝节进行调整。 本发明实施例二提供的天线装置， 无需对使得金属外观的无线通信终 端的封闭框体进行开缝， 利用射频馈线馈电部的位置， 减少封闭框体不开 缝导致的封闭环境对天线辐射性能的影响， 同时， 通过设置在馈线上的金 属枝节， 可以有效地将天线的辐射最强部位转移到人手不易握到的区域， 从而降低人体对天线性能的恶化影响， 另外， 由于所述天线装置是由封闭 框体与金属枝节结合使用的方式， 使得天线形式易于扩展， 可以适应无线 通信终端对天线宽频带的性能需求。
上述实施例二提供的天线是在射频馈线上设置有金属枝节，如图 8a或 图 8b所示， 本发明实施例三提供的天线装置， 是在所述封闭封闭框体 101 上设置金属枝节 108。 根据 LC串联电路的综合效应， 在其 LC谐振频点 fl 上， fl==l/2 7r V^I , 将呈现开路状态， 如图 9所示。 因此， 当第一环天 线和第二环天线在低频段的阻抗效果 C和 L， 在 fl构成开路状态时， 封闭 框体对低频分支 108的阻抗影响将被消除，从而可以凭借低频分支 108走向 的自身设计来实现好的低频谐振。 低频分支 108 走线的末端， 电场往往最 强， 可以调整到不易被手握到的区域， 从而减少人体影响。 上述设置在封 闭框体上的低频分支仅是举例， 低频分支的长度、 结构、 数量不限制， 可 以根据天线电性能要求进行调整。 同时， 所述金属枝节也可以为可以调节 的金属枝节， 这样， 所述天线装置的天线阻抗可通过调节所述金属枝节进 行调整。
本发明实施例三提供的天线装置无需对使得金属外观的无线通信终端 的封闭框体进行开缝， 利用射频馈线馈电部的位置， 减少封闭框体不开缝 导致的封闭环境对天线辐射性能的影响， 同时， 通过设置在封闭封闭框体 上的金属枝节， 可以有效地将天线的辐射最强部位转移到人手不易握到的 区域， 从而降低人体对天线性能的恶化影响， 另外， 由于所述天线装置是 由封闭框体与金属枝节结合使用的方式， 使得天线形式易于扩展， 可以适 应无线通信终端对天线宽频带的性能需求。
结合实施例二和实施例三，如图 10a-10c所示，本发明实施例四提供的 天线装置， 在射频馈线设置有金属枝节 107 , 同时在封闭框体上设置有金属 枝节 108。 根据 LC并联电路及串联电路的综合效应， 在其 LC谐振频点 fl 上， fl==l/2 7r V^I , 将呈现开路状态。 因此， 当第一环天线和第二环天 线在低频段的阻抗效果 C和 L， 在 fl构成开路状态时， 封闭框体对低频分 支 107和 108的阻抗影响将被消除，从而可以凭借低频分支 107和 108走向 的自身设计来实现好的低频谐振。低频分支 107和 108走线的末端， 电场往 往最强， 可以调整到不易被手握到的区域， 从而减少人体影响。 上述设置 在射频馈线或封闭框体上的低频分支仅是举例， 低频分支的长度、 结构、 数量不限制， 可以根据天线电性能要求进行调整。 同时， 所述金属枝节也 可以为可以调节的金属枝节， 例如， 所述金属枝节连接有调节开关或可调 电容， 这样， 所述天线装置的天线阻抗可通过调节所述金属枝节进行调整。
本发明实施例三提供的天线装置无需对使得金属外观的无线通信终端 的封闭框体进行开缝， 利用射频馈线馈电部的位置， 减少封闭框体不开缝 导致的封闭环境对天线辐射性能的影响， 同时， 通过设置在封闭封闭框体 上的金属枝节， 可以有效地将天线的辐射最强部位转移到人手不易握到的 区域， 从而降低人体对天线性能的恶化影响， 另外， 由于所述天线装置是 由封闭框体与金属枝节结合使用的方式， 使得天线形式易于扩展， 可以适 应无线通信终端对天线宽频带的性能需求。
上述各实施例所述的天线装置， 其中金属枝节与所述封闭框体以及射 频馈线的连接点位置不限制， 具体根据天线的电性能需要进行调整。 所述 金属枝节与所述封闭框体以及射频馈线的连接方式也不受限制， 可以为金 属弹片连接或者弹簧针 Pogo-Pin连接等方式进行连接。 上述各实施例所述的天线装置， 所述馈电部、 接地部与所述封闭封闭 框体电连接的方式不限制， 可以是各种导电材料， 例如导电布、 导电泡棉 等， 或者导电结构件， 例如弹脚、 焊接点等， 或者各种分布参数集种参数 的感容元件， 或者分布参数的过渡设计。
上述各实施例所述的天线装置， 所述馈电部包括匹配电路， 所述匹配 电路用于调节谐振频率。
本发明实施例四提供一种无线通信终端， 所述无线通信终端包括如上 述各实施例所述的天线装置。 所述无线通信通信为手机或平板电脑。
本发明实施例四提供的无线通信终端， 由于使用了上述各实施例所述 的天线装置， 因此该无线通信终端的封闭框体无需开缝， 有效提升了无线 通信终端的外观设计的自由度， 简化了结构设计。 同时由于所述无线通信 终端的天线装置是由封闭框体与金属枝节结合使用的方式， 使得天线形式 易于扩展， 可以适应无线通信终端对天线宽频带的性能需求。 显然， 本领 域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和 范围。 这样， 倘若本发明的这些修改和变型属于本发明权利要求及其等同 技术的范围之内， 则本发明也意图包含这些改动和变型在内。
最后应说明的是： 以上各实施例仅用以说明本发明的技术方案， 而非 对其限制； 尽管参照前述各实施例对本发明进行了详细的说明， 本领域的 普通技术人员应当理解： 其依然可以对前述各实施例所记载的技术方案进 行修改， 或者对其中部分或者全部技术特征进行等同替换； 而这些修改或 者替换， 并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims

权利要求
1、 一种天线装置， 包括：
馈电部；
接地部；
封闭框体， 所述封闭框体环框无线终端的主体；
所述馈电部、 接地部与所述封闭框体电性连接， 所述封闭框体与所述 馈电部、 接地部形成第一电流回路和第二电流回路， 所述第一电流回路和 第二电流回路形成谐振。
2、 根据权利要求 1所述的天线装置， 其特征在于， 所述第一电流回路 阻抗效果为电感 L, 所述第二电流回路阻抗效果为电容 C, 所述第一电流回 路与第二电流回路形成谐振， 谐振频率为 f=l/2 7i V^I。
3、 根据权利要求 2所述的天线装置， 其特征在于， 所述第一电流回路 长度小于四分之一波长， 所述第二电流回路长度大于四分之一波长下于二 分之一波长。
4、 根据权利要求 1-3任一项所述的天线装置， 其特征在于， 所述天线 装置还包括至少一个金属枝节。
5、 根据权利要求 4任一项所述的天线装置， 其特征在于， 所述至少一 个金属枝节设置在馈线上。
6、 根据权利要求 4任一项所述的天线装置， 其特征在于， 所述至少一 个金属枝节设置在所述封闭封闭框体上。
7、 根据权利要求 4或 5所述的天线装置， 其特征在于， 所述至少一个 金属枝节连接有调节开关或可调电容， 所述天线装置的天线阻抗可通过所 述调节开关或可调电容进行调整。
8、 根据权利要求 7所述的天线装置， 其特征在于， 所述金属枝节与所 述封闭框体通过弹片或者弹簧针 Pogo-P in连接。
9、 根据权利要求 1-8 任一项 所述的天线装置， 其特征在于， 所述馈 电部包括匹配电路， 所述匹配电路用于调节谐振频率。
10、 根据权利要求 1-9 任一项所述的天线装置， 其特征在于， 所述馈 电部、 接地部为导电材料、 导电结构件、 分布参数集种参数的感容元件、 分布参数的过渡设计中的一种。
11、 一种无线通信终端， 其特征在于， 所述无线通信终端包括如权利 要求 1-10所述的天线装置。
12、 根据权利要求 11所述的无线通信终端， 其特征在于， 所述无线通 信终端为手机或者平板电脑。
PCT/CN2014/081224 2014-06-30 2014-06-30 无缝封闭框体天线及无线通信设备 WO2016000155A1 (zh)

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