WO2019119952A1 - 一种电子设备 - Google Patents

一种电子设备 Download PDF

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Publication number
WO2019119952A1
WO2019119952A1 PCT/CN2018/110890 CN2018110890W WO2019119952A1 WO 2019119952 A1 WO2019119952 A1 WO 2019119952A1 CN 2018110890 W CN2018110890 W CN 2018110890W WO 2019119952 A1 WO2019119952 A1 WO 2019119952A1
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WIPO (PCT)
Prior art keywords
circuit board
electronic device
conductive element
battery
ear
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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
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PCT/CN2018/110890
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English (en)
French (fr)
Inventor
孙劲
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Goertek Inc
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Goertek Inc
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Publication date
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Publication of WO2019119952A1 publication Critical patent/WO2019119952A1/zh
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Ceased legal-status Critical Current

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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
    • 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
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1041—Mechanical or electronic switches, or control elements

Definitions

  • the invention belongs to the technical field of communication devices, and more particularly to an electronic device.
  • An antenna is an important component used to transmit and receive electromagnetic energy in a wireless communication system. Since the current technology cannot integrate the antenna into the chip of the semiconductor process, in addition to the core system chip, the antenna radiating body is another key component that affects the transmission characteristics of the antenna module.
  • the structure of the antenna directly affects the volume of the antenna.
  • the clearance area of the antenna is limited, and the clearance height of the antenna has a significant impact on the performance of the antenna.
  • Existing antennas are typically monopole antennas, loop antennas, or monopole antennas with grounding points. These types of antennas have a relatively high requirement for the antenna headroom and the height of the system chip board.
  • the coupling with adjacent components such as PCB, FPC is particularly obvious, which will cause the performance of the antenna to be affected, or the size of the electronic device needs to be increased.
  • thin and light, small electronic devices are the development trend of the industry. Therefore, how to reduce the coupling between the antenna radiation body and adjacent components, how to improve the performance of the antenna and how to reduce the electronic equipment These are the problems faced by those skilled in the art.
  • an electronic device comprising a first circuit board, a signal line, a first conductive element and a radiating arm, the first conductive element being disposed on the radiating arm, the first conductive element being high
  • the dielectric constant material is composed of a conductive structure inside, and leads a ground contact and a feed contact to the outside, and the feed end of the first circuit board is electrically connected to the feed contact of the first conductive element through the signal line Connected, one end of the radiating arm is electrically connected to a ground contact of the first conductive element, and the other end of the radiating arm is grounded.
  • the radiating arm is electrically connected by one or more of a printed circuit board, a flexible circuit board, a conductor surface formed by a laser direct structuring technique, and a metal sheet.
  • the radiating arm includes a second circuit board and an extended ground, a flexible circuit board or a metal piece, the first conductive element is disposed on the second circuit board, and an extended end passes through the The second circuit board is electrically connected to the ground contact of the first conductive element, and the other end of the extended ground is grounded.
  • the feed contact of the first conductive element is opposite the feed end of the first circuit board.
  • the effective radiation length of the radiating arm is a quarter wavelength of the Bluetooth band.
  • the first circuit board is composed of a plurality of printed circuit boards electrically connected by a flexible circuit board.
  • the first conductive element comprises a plurality of ground contacts.
  • the electronic device is a wireless earphone
  • the wireless earphone further includes a casing and a battery
  • the casing is a hollow structure, has an ear portion and an ear handle portion
  • the first circuit board is disposed in the ear portion
  • the battery is disposed on the ear
  • a speaker is disposed in the ear portion
  • the radiation arm is located on a side of the first circuit board and the battery away from the speaker, and has a gap between the first circuit board and the battery
  • the radiation arm is located at the machine Inside the shell, and extending inside the ear stem.
  • the radiating arm is electrically connected to the battery negative electrode and grounded.
  • the electronic device is a wireless earphone
  • the wireless earphone further includes a casing and a battery
  • the casing is a hollow structure, has an ear portion and an ear handle portion
  • the battery is disposed in the ear portion
  • the first circuit board is partially or completely Provided in the ear handle portion
  • a speaker is disposed in the ear portion
  • the radiation arm is located on a side of the first circuit board and the battery away from the speaker, and has a gap between the first circuit board and the battery
  • the radiating arm is located inside the casing and extends to the ground in the ear stem portion.
  • the antenna radiating body within the present invention is capable of reducing coupling between adjacent components.
  • FIG. 1 is a schematic side view showing a specific embodiment of the present invention.
  • FIG. 2 is a schematic top plan view of a specific embodiment of the present invention.
  • the invention provides an electronic device in which an antenna radiation body in the electronic device can reduce the coupling effect with an adjacent component.
  • the antenna radiation body in the electronic device greatly reduces the antenna clearance height requirement. Ability to get better performance parameters in a limited space.
  • An electronic device as shown in FIGS. 1 and 2 has an antenna therein.
  • the electronic device comprises a first circuit board 5, a signal line 6, a first conductive element 1 and a radiation arm.
  • the radiation arm is formed in FIG. 1 by the second circuit board 2 and the extension 3 shown.
  • the radiating arm may also consist entirely of the second circuit board 2 or the extension 3.
  • the first conductive element 1 and the radiating arm constitute an antenna radiating body.
  • the first conductive element 1 is disposed on the radiation arm, which can reduce the connection distance between the first conductive element 1 and the radiation arm, and the radiation arm can also be used to carry the first conductive element 1, so that the structure of the antenna is more compact.
  • there are usually no other electronic components above the radiating arm and the first conductive element 1 is disposed on the radiating arm, which can also reduce the interference of other electronic components on the first conductive element 1.
  • the first conductive element 1 is composed of a high dielectric constant material.
  • a material having a dielectric constant of more than 10 is referred to as a high dielectric constant material such as a ceramic.
  • the first conductive element 1 has a conductive structure inside and leads the ground contact 11 and the feed contact 12 to the outside.
  • the conductive structure may be a metallized structural layer or a metal structure. During the design process, the impedance of the first conductive element 1 can be adjusted by providing different conductive structures.
  • Feed contact 12 is for receiving signal current.
  • the first circuit board 5 may be a main board formed of a printed circuit board or the like.
  • the first circuit board 5 is electrically connected to the feed contact 12 of the first conductive element 1 via a signal line 6 for transmitting a signal current to the feed contact 12.
  • the signal current in the first conductive element 1 With the high dielectric constant material, the signal current in the first conductive element 1 generates an induced charge that weakens the electric field.
  • the weakened electric field is less coupled to the opposite currents on adjacent electronic components, such as PCBs, FPCBs, and batteries, to reduce the loss of antenna radiant energy.
  • adjacent electronic component that emits a signal current the opposite current that is coupled to the electronic component that emits the signal current cancels out the partial signal current, causing unnecessary loss.
  • the electronic device shown in FIG. 1 is a wireless earphone, usually has a built-in battery, the radiation arm is adjacent to the first circuit board 5 and the battery, and the radiation arm is disposed above the first circuit board 5 and the battery, and the radiation arm and the first
  • the distance between a circuit board 5 and the battery can significantly affect the performance of the antenna. The farther the distance is, the better the performance of the antenna. Similarly, the farther the distance is, the larger the required space is, which is not conducive to Product design.
  • the present invention reduces coupling between adjacent components.
  • One end of the radiating arm is electrically connected to the ground contact 11 of the first conductive element 1, and the other end of the radiating arm is grounded so that the first conductive element 1 and the radiating arm can constitute a current path.
  • a corresponding induced current 31 is induced, which is the path of the induced current.
  • the induced current 31 produces effective electromagnetic radiation on the radiating arm.
  • the direction of the current of the induced current 31 may be the direction as shown in FIG. 2, and at another time, the direction of the current of the induced current 31 may also be opposite to that shown in FIG. 2.
  • the resonant frequency of the adjusting antenna can be controlled by adjusting the matching circuit between the first conductive element 1 and the radiating arm, and adjusting the effective radiation length from one end of the radiating arm to the other end, to achieve the required resonant frequency, and satisfy the requirements of the antenna.
  • the effective radiation length refers to the length of the effective electromagnetic radiation that the radiation arm is capable of emitting.
  • the present invention generates an effective electromagnetic radiation by inductively generating an induced current 31 instead of conventionally using a signal current to generate electromagnetic radiation, and thus the coupling between the radiating arm and surrounding components is greatly reduced.
  • the distance between the radiating arm of the antenna and the surrounding components in the present invention can be greatly reduced.
  • D1 and D2 in the present invention can be greatly reduced with respect to the conventional antenna due to the reduction in coupling effect with the same performance. It is possible to further reduce the installation volume required for the antenna. In other words, in the case where D1 and D2 are the same, the antenna performance of the present invention is far superior to that of the conventional antenna. This allows the invention to achieve good performance parameters in a limited space.
  • the radiating arm is comprised of one or more of a printed circuit board, a flexible circuit board, a conductor face formed by laser direct structuring techniques, and a metal sheet.
  • the radiating arm is constituted by a second circuit board 2 and an extended ground 3, and the second circuit board 2 may be a hard printed circuit board, and the first conductive member 1 is disposed on the second circuit board 2.
  • the second circuit board 2 can be a hard printed board for carrying the first conductive element 1.
  • the extension 3 can be a flexible circuit board or a metal sheet.
  • One end of the extended ground 3 is electrically connected to the ground contact 11 of the first conductive element 1 through the second circuit board 2, and the other end of the extended ground 3 is grounded, so that the first conductive element 1, the second circuit board 2 and the extended ground 3 can Form the current path. It is also possible to control the resonant frequency of the adjustment antenna by adjusting the length of the extended ground 3. Or in some other specific embodiments, the second circuit board 2 and the extension 3 are integral and are flexible circuit boards. Alternatively, the above or other materials capable of generating electromagnetic radiation or materials capable of generating electromagnetic radiation are electrically connected to each other, and the present application is not limited thereto, as long as it can generate effective electromagnetic radiation, and a signal can be transmitted.
  • the first conductive element corresponds to the first circuit board position.
  • the first conductive element 1 is disposed above the first circuit board 5.
  • the first circuit board 5 is electrically connected to the feed contact 12 of the first conductive element 1 via the signal line 6, and supplies a signal current to the first conductive element 1.
  • the feed contact 12 of the first conductive element 1 is directly connected to the signal line 6. Connection, the signal current transmission distance is short. By shortening the path of the signal current, the signal current can be confined to a relatively small range, reducing the coupling effect; for example, the feed contact 12 of the first conductive element 1 is disposed directly above the feed end of the first circuit board 5, The feed end is directly electrically connected to the feed contact 12 with the shortest distance.
  • connection relationship between the feed contact 12 of the first conductive element 1 and the signal line 6 respectively connected to the second circuit board 2 may be formed. It is possible that the difference is only that the path of the signal current is long, but the present invention can also be implemented. Therefore, the present application is not limited thereto.
  • the effective length of the radiating arm is one quarter of the wavelength of the Bluetooth band. Due to the structural limitation, the radiating arm may have the possibility of bending or overlapping, and the overlapping portion of the bending does not generate electromagnetic radiation well due to the obstruction of the overlapping surface. Therefore, the effective radiation length of the radiating arm is set to the Bluetooth band. A quarter wavelength allows it to generate effective electromagnetic radiation. In some embodiments, the headroom length of the radiating arm can also be set to a quarter wavelength of the Bluetooth band.
  • the antenna in the present invention may be the above-mentioned Bluetooth antenna, or may be a wifi antenna or other communication type antenna, as long as it can adopt the principle of the present invention, and reduce the adjacent electronic components. The coupling between them is sufficient, and this application is not limited thereto.
  • the first circuit board 5 may be composed of a plurality of segments of electrically connected printed circuit boards, as shown in FIG. 1, they are electrically connected by a connecting line 51, which may be flexible
  • the circuit board enables it to meet both the requirements of use and the spatial structure.
  • the first circuit board 5 may also be a whole board as long as the function of transmitting a signal current to the first conductive element 1 through the signal line 6 can be realized.
  • the present invention is not limited thereto, and those skilled in the art can understand that FIG. 1 is only a specific embodiment of the present invention, and is not intended to limit the present invention.
  • the first circuit board 5 can be one of various forms of circuit boards or conductive boards, such as a printed circuit board or a flexible circuit board, and can be selected by those skilled in the art according to actual needs.
  • the first conductive element 1 comprises a plurality of ground contacts 11 . As shown in FIG. 2, there are two ground contacts 11. In some other specific embodiments, the grounding contact 11 may also be one. The number of the grounding contacts 11 is not limited by the present invention.
  • the electronic device may be a wireless headset, or more specifically, may be a Bluetooth headset. In other specific embodiments, it is determined according to the communication type of the antenna.
  • the casing 9 and the battery 4 are included, and the casing 9 has a hollow structure and has an in-ear portion 91 and an ear stem portion 93.
  • the first circuit board 5 is disposed in the ear portion 91.
  • the battery 4 is disposed in the ear stem portion 93.
  • a speaker 7 is provided in the ear portion 91 for sounding.
  • the radiation arm is located on a side of the first circuit board 5 and the battery 4 remote from the speaker 7, and a gap is formed between the radiation arm and the first circuit board 5 and the battery 4.
  • the speaker 7 is located below the first circuit board 5 and the battery 4, the radiation arm is located above the first circuit board 5 and the battery 4, the radiation arm is adjacent to the first circuit board 5 and the battery 4, and There is a certain gap between the first circuit board 5 and the battery 4.
  • the radiating arm is located within the casing 9 and extends into the ear shank 93 to ground, and the length of the radiating arm can be preset or the length of the radiating arm can be adjusted.
  • the radiation arm is grounded, and may be electrically connected to the negative pole of the battery 4 as shown in FIG. 1 to be grounded. In some other embodiments, it may also be electrically connected to the ground of the first circuit board 5 or other electronic components. In order to achieve grounding, the present application is not limited thereto, and as long as the effective radiation length of the radiation arm can be made to a desired length, effective electromagnetic radiation can be generated.
  • the first circuit board 5 is disposed within the ear stem portion 93.
  • the battery 4 is disposed in the ear portion 91.
  • the present invention can also be implemented, and the present application is not limited thereto. In a case where part of the first circuit board 5 is disposed in the ear stem portion 93, it may be preferable to electrically connect the radiation arm to the ground end of the first circuit board 5.
  • the distance D1 between the second circuit board 2 and the first circuit board 5, optionally, D1 is 1.5 mm.
  • the invention can achieve the antenna effect and energy consumption of 3-5 mm in the antenna with the same structure but without the first conductive element 1 at a distance of 1.5 mm, which greatly reduces the antenna height requirement and reduces the electronic equipment. Design difficulty.
  • the electronic device may be a wireless earphone including a casing 9, a speaker 7, and a microphone 8.
  • the casing 9 has a hollow structure and has an in-ear portion 91 and an ear stem portion 93.
  • the ear portion 91 has a first opening 92, and the speaker 7 is located at the first opening 92. In operation, sound can be transmitted to the outside through the first opening 92.
  • the ear stem portion 93 has a second opening 94 therein, and the microphone 8 is located at the second opening 94.
  • the microphone 8 can be made to receive sound from the outside through the second opening 94.
  • the speaker 7 and the microphone 8 are electrically connected to the first circuit board 5, respectively. The connection can be made by a flexible circuit board.
  • the first circuit board 5 is electrically connected to the positive and negative terminals of the battery 4, respectively, and the battery 4 supplies power to the first circuit board 5.
  • the electrical connection may be at least one of a specific form of electrical connection such as soldering, snapping, connecting through a circuit or through a flexible circuit board.
  • the connection between the first circuit boards 5 composed of a plurality of electrically connected circuit boards can be connected by a flexible circuit board.
  • the electrical connection between the first circuit board 5 and the battery 4 can also be connected by a flexible circuit board.
  • the electrical connection between the ground contact 11 and the second circuit board 2 on the first conductive member 1 shown in Fig. 2 can be connected by soldering or snapping or the like.
  • the antenna structure in the electronic device of the invention greatly reduces the height of the required antenna clearance area and the height of the antenna from the ground, and is particularly suitable for small and highly integrated electronic products.
  • the volume required for the antenna in the electronic device can be further reduced, and the volume of the electronic device can be reduced, and the electronic device can be made thinner and more beautiful. Or you can get better antenna performance with the same size and structure of the electronic device.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)

Abstract

本发明公开了一种电子设备，所述电子设备包括第一电路板、信号线、第一导电元件和辐射臂，第一导电元件设置在辐射臂上，所述第一导电元件由高介电常数材料构成，内部具有导电结构，并向外部引出接地触点与馈电触点，第一电路板的馈电端通过所述信号线与所述第一导电元件的馈电触点电连接，所述辐射臂的一端与所述第一导电元件的接地触点电连接，所述辐射臂的另一端接地。本发明的一个技术效果在于本发明内的天线辐射主体能够降低与相邻元器件之间的耦合作用。

Description

一种电子设备 技术领域
本发明属于通信设备技术领域，更具体地，涉及一种电子设备。
背景技术
天线是在无线通讯系统中用来传送与接收电磁波能量的重要组件。由于目前技术尚无法将天线整合至半导体制程的芯片中，故在天线模块里除了核心的系统芯片外，天线辐射主体是另一具有影响天线模块传输特性的关键性组件。
在现有技术中，天线的结构直接影响着天线的体积。在一些小体积的电子设备中，由于设备体积小，内部结构紧凑，就会导致天线的净空区域有限，而天线的净空高度对天线的性能影响十分显著。现有的天线通常为单极天线，环天线，或有接地点的单极天线。这些类别的天线对天线净空，距离系统芯片主板的高度有比较高的要求。并且与邻近元器件如PCB，FPC之间的耦合特别明显,也就导致天线的性能会受到影响，或者需要增大电子设备的体积。在现在的消费市场中，轻薄化，小巧化的电子设备是行业发展的趋势，因此，如何降低天线辐射主体与临近元器件之间的耦合作用、如何提高天线的性能以及如何减小电子设备的体积这些都是本领域技术人员所面临的问题。
因此，有必要提供一种电子设备的新技术方案。
发明内容
本发明的一个目的是提供一种电子设备的新技术方案。
根据本发明的第一方面，提供了一种电子设备，包括第一电路板、信号线、第一导电元件和辐射臂，第一导电元件设置在辐射臂上，所述第 一导电元件由高介电常数材料构成，内部具有导电结构，并向外部引出接地触点与馈电触点，第一电路板的馈电端通过所述信号线与所述第一导电元件的馈电触点电连接，所述辐射臂的一端与所述第一导电元件的接地触点电连接，所述辐射臂的另一端接地。
可选地，所述辐射臂由印制电路板、柔性电路板、由激光直接成型技术形成的导体面和金属片中的一种或多种电连接而成。
可选地，所述辐射臂包括第二电路板和延长地，延长地为柔性电路板或金属片，所述第一导电元件设置在所述第二电路板上，延长地的一端通过所述第二电路板与所述第一导电元件的接地触点电连接，延长地的另一端接地。
可选地，所述第一导电元件的馈电触点与所述第一电路板的馈电端正对。
可选地，所述辐射臂的有效辐射长度为蓝牙频段的四分之一波长。
可选地，所述第一电路板由若干段通过柔性电路板电连接的印刷电路板构成。
可选地，所述第一导电元件包含有若干个接地触点。
可选地，所述电子设备为无线耳机，无线耳机还包括机壳和电池，机壳为中空结构，具有入耳部和耳柄部，所述第一电路板设置于入耳部内，电池设置于耳柄部内，入耳部内设置有扬声器，所述辐射臂位于第一电路板和电池远离所述扬声器的一侧，并与所述第一电路板和电池之间间隔有间隙，所述辐射臂位于机壳内，并在耳柄部内延伸接地。
可选地，所述辐射臂与电池负极电连接，进行接地。
可选地，所述电子设备为无线耳机，无线耳机还包括机壳和电池，机壳为中空结构，具有入耳部和耳柄部，所述电池设置于入耳部内，第一电路板部分或全部设置于耳柄部内，入耳部内设置有扬声器，所述辐射臂位于第一电路板和电池的远离所述扬声器的一侧，并与所述第一电路板和电池之间间隔有间隙，所述辐射臂位于机壳内，并在耳柄部内延伸接地。
根据本公开的一个实施例，本发明内的天线辐射主体能够降低与相 邻元器件之间的耦合作用。
通过以下参照附图对本发明的示例性实施例的详细描述，本发明的其它特征及其优点将会变得清楚。
附图说明
被结合在说明书中并构成说明书的一部分的附图示出了本发明的实施例，并且连同其说明一起用于解释本发明的原理。
图1是本发明一种具体实施方式的侧视结构示意图；
图2是本发明一种具体实施方式的俯视结构示意图。
图中：1第一导电元件，11接地触点，12馈电触点，2第二电路板，3延长地，31感应电流，4电池，5第一电路板，51连接线，6信号线，7扬声器，8麦克风，9机壳，91入耳部，92第一开孔，93耳柄部，94第二开孔。
具体实施方式
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一 步讨论。
本发明提供的一种电子设备，该电子设备内的天线辐射主体能够降低与相邻元器件之间的耦合作用。此外，该电子设备中的天线辐射主体对天线净空高度要求大大降低。能够在有限的空间内得到更好的性能参数。
如图1和图2所示的一种电子设备，该电子设备内具有天线。所述电子设备包括第一电路板5、信号线6、第一导电元件1和辐射臂。辐射臂在图1中是由所示的第二电路板2和延长地3共同构成。在一些其他的具体实施方式中，辐射臂也可以完全由第二电路板2或延长地3构成。第一导电元件1与辐射臂构成了天线辐射主体。第一导电元件1设置在辐射臂上，既可以减少第一导电元件1与辐射臂的连接距离，辐射臂也能用于承载第一导电元件1，使得该天线的结构更加紧凑。另一方面，辐射臂上方通常无其他电子元器件，将第一导电元件1设置在辐射臂上，也能减少其他电子元器件对第一导电元件1的干扰。
第一导电元件1由高介电常数材料构成。在本发明中，将介电常数大于10的材料称之为高介电常数材料，例如陶瓷等材料。第一导电元件1内部具有导电结构，并向外部引出接地触点11与馈电触点12。导电结构可以是金属化结构层，也可以是金属结构。在设计过程中，可以通过设置不同的导电结构来调节第一导电元件1的阻抗。馈电触点12用于接收信号电流。第一电路板5可以是印刷电路板等构成的主板。第一电路板5通过信号线6与第一导电元件1的馈电触点12电连接，用于向馈电触点12发送信号电流。通过高介电常数材料，信号电流在第一导电元件1中，会产生感应电荷而削弱电场。被削弱的电场也就较少的在相邻的电子元器件上耦合出相反的电流，如PCB、FPCB和电池等电子元器件上，能够减少天线辐射能量的损耗。尤其是在与发出信号电流的电子元器件相邻时，在发出信号电流的电子元器件上，耦合出的相反的电流会与部分信号电流相互抵消，造成不必要的损耗。在一些小型的电子设备中，由于空间所限，天线辐射主体与相邻的电子元器件间隔空间有限，与相邻电子元件之间的距离就会显著的影响天线性能。例如，图1中所示的电子设备为无线耳机， 通常内置有电池，辐射臂与第一电路板5和电池相邻，辐射臂设置在第一电路板5和电池的上方，辐射臂与第一电路板5和电池之间的距离会显著地影响天线的性能，距离越远，天线的性能越好；同样的，距离越远，所占用的空间，需要的高度也就越大，不利于产品的设计。
相对于传统天线，本发明降低了与相邻元器件之间的耦合作用。辐射臂的一端与第一导电元件1的接地触点11电连接，辐射臂的另一端接地，使得第一导电元件1与辐射臂能够构成电流通路。在第一导电元件1接收到信号电流时，感应出相应的感应电流31，所述电流通路也就是感应电流的通路。感应电流31会在辐射臂上产生有效的电磁辐射。在某一时刻，感应电流31的电流方向可以为如图2中所示的方向，在另外的时刻，感应电流31的电流方向也可以与图2中所示的方向相反。可以通过调节第一导电元件1与辐射臂之间的匹配电路，以及调节辐射臂一端至另一端的有效辐射长度，来控制调节天线的谐振频率，达到所需的谐振频率，满足天线的使用要求。有效辐射长度是指辐射臂能够发射所需的有效电磁辐射的长度。
本发明通过感应产生的感应电流31来产生有效的电磁辐射，而不是传统的使用信号电流产生电磁辐射，因此，辐射臂与周围元器件之间的耦合作用大大降低。相对于传统天线，本发明中天线的辐射臂与周围元器件之间的距离也就可以大大的缩小。如图1中所示,第二电路板2与第一电路板5之间的距离D1；延长地3与电池4之间的距离D2；距离越大，天线的性能越好。距离越近，由于耦合作用，天线的性能将大幅度降低。而在本发明中，由于耦合作用的降低，使得本发明中的D1和D2相对于传统天线，在同样性能的情况下，可以大幅度的降低。能够进一步的缩小天线所需要的安装体积。或者说，在D1和D2相同的情况下，本发明的天线性能要远远优于传统天线。使得本发明可以在有限的空间内得到很好的性能参数。
可选地，辐射臂由印制电路板、柔性电路板、由激光直接成型技术形成的导体面和金属片中的一种或多种构成。如图1中所示的，辐射臂由 第二电路板2和延长地3构成，第二电路板2可以为硬质印制电路板，第一导电元件1设置在第二电路板2上。第二电路板2可以为硬制印刷板，用于承载第一导电元件1。延长地3可以为柔性电路板或金属片。延长地3的一端通过第二电路板2与第一导电元件1的接地触点11电连接，延长地3的另一端接地，使得第一导电元件1、第二电路板2和延长地3能够构成电流通路。还能通过调整延长地3的长度来控制调节天线的谐振频率。或者在一些其他的具体实施方式中，第二电路板2和延长地3是一体的，均为柔性电路板。或者是上述或者其他的能够产生电磁辐射的材料制成或者能够产生电磁辐射的材料相互电连接而成，本申请对此并不限制，只要其能够产生有效的电磁辐射，发送信号即可。
可选地，第一导电元件与第一电路板位置相对应。如图1中所示，第一导电元件1设置在第一电路板5的上方。第一电路板5通过信号线6与第一导电元件1的馈电触点12电连接，向第一导电元件1输送信号电流，第一导电元件1的馈电触点12与信号线6直接连接，信号电流的传输距离较短。通过缩短信号电流的通路，可以将信号电流局限在一个比较小的范围内，减少耦合作用；例如，第一导电元件1的馈电触点12设置在第一电路板5馈电端的正上方，馈电端与馈电触点12直接电连接，距离最短。本领域技术人员可以理解，在一些其他的具体实施方式中，也可以是通过第一导电元件1的馈电触点12与信号线6分别于第二电路板2电连接来形成连接关系，也是可以的，区别仅在于信号电流的通路较长，但也是能够实现本发明的，因此，本申请对此并不限制。
可选地，辐射臂的有效辐射长度为蓝牙频段的四分之一波长。由于结构限制，辐射臂存在弯折或者重叠的可能，而弯折重叠部分由于上面的重叠面的阻碍，并不能很好的产生电磁辐射，因此，将辐射臂的有效辐射长度设置为蓝牙频段的四分之一波长，可以使得其能够产生有效的电磁辐射。在一些具体实施方式中，也可以将辐射臂的净空长度设置为蓝牙频段的四分之一波长。再一些其他的具体实施方式中，本发明中的天线可以是上述的蓝牙天线，还可以是wifi天线或者其他通讯类型的天线，只要其 能够采用本发明的原理，降低与相邻电子元器件之间的耦合作用即可，本申请对此并不限制。
可选地，由于空间或者结构的限制，第一电路板5可以由若干段电连接的印刷电路板构成，如图1中所示，他们通过连接线51进行电连接，连接线51可以是柔性电路板，使其能同时满足使用要求与空间结构要求。在其他一些具体实施方式中，第一电路板5也可以是一块整板，只要能够实现通过信号线6向第一导电元件1发送信号电流的功能即可。本发明对此并不限制，本领域技术人员可以理解，图1中所示仅是本发明的一种具体实施方式，并非对本发明的限制。所述第一电路板5可以是印制电路板或柔性电路板等各种形式的电路板或者导电板中的一种，本领域技术人员可以根据实际需要进行选择。
可选地，第一导电元件1包含有若干个接地触点11。如图2中所示的，接地触点11为两个。在一些其他的具体实施方式中，接地触点11也可以为一个，本发明对接地触点11的数量并不限制。
可选地，如图1和图2所示，所述电子设备可以是无线耳机，或者更具体的，可以是一种蓝牙耳机，在其他的具体实施方式中，需要根据天线的通讯类型来确定该耳机的种类。包括机壳9和电池4，机壳9为中空结构，具有入耳部91和耳柄部93。第一电路板5设置于入耳部91内。电池4设置于耳柄部93内。入耳部91内设置有扬声器7，用于发声。辐射臂位于第一电路板5和电池4的远离扬声器7的一侧，辐射臂与第一电路板5和电池4之间间隔有间隙。如图1中所示，扬声器7位于第一电路板5和电池4的下方，辐射臂位于第一电路板5和电池4的上方，辐射臂与第一电路板5和电池4相邻，并且与第一电路板5和电池4之间间隔有一定的间隙。辐射臂位于机壳9内，并在耳柄部93内延伸接地，可以预设辐射臂的长度或者调节辐射臂的长度。辐射臂接地，可以是如图1中所示的与电池4的负极电连接进行接地，在一些其他的具体实施方式中，也可以与第一电路板5或者是其他电子元件的接地端电连接，实现接地，本申请对此并不限制，只要能使辐射臂的有效辐射长度达到所需的长度，能 够产生有效的电磁辐射即可。
在其他的具体实施方式中，部分或者全部的第一电路板5设置于耳柄部93内。电池4设置于入耳部91内。也是可以实现本发明的，本申请对此并不限制。在部分第一电路板5设置于耳柄部93内的情况下，可以优选为将辐射臂与第一电路板5的接地端电连接。
如图1中所示,第二电路板2与第一电路板5之间的距离D1，可选地，D1为1.5mm。本发明在距离1.5mm的时候，就可以达到采用同样结构但不采用第一导电元件1的天线中3-5mm的天线效果以及能耗，大大降低了天线对高度的需要，减低了电子设备的设计难度。
可选地，如图1和图2所示，所述电子设备可以是无线耳机，包括机壳9、扬声器7和麦克风8。机壳9为中空结构，具有入耳部91和耳柄部93。入耳部91上具有第一开孔92，扬声器7位于第一开孔92处。在工作时，可以通过第一开孔92向外部传递声音。耳柄部93上具有第二开孔94，麦克风8位于第二开孔94处。使得麦克风8可以通过第二开孔94接收来自外部的声音。其中，扬声器7与麦克风8分别于第一电路板5进行电连接。连接方式可以是通过柔性电路板进行连接。第一电路板5与电池4的正负极分别电连接，由电池4向第一电路板5供电。
可选地，所述电连接可以是焊接、卡接、通过电路或通过柔性电路板进行连接等电连接具体形式中的至少一种。如图1中所示，由若干段电连接的电路板构成的第一电路板5，之间的连接形式就可以通过柔性电路板进行连接。第一电路板5与电池4之间的电连接也可以通过柔性电路板进行连接。图2中所示的第一导电元件1上的接地触点11与第二电路板2之间的电连接就可以通过焊接或者卡接进行连接等。本领域技术人员可以根据实际需要进行选择，本申请对此并不限制。
本发明电子设备中的天线结构对所需天线净空区域面积，天线离地的高度要求大大降低，特别适合体积小而且高度集成的电子产品。应用于电子设备中，可以进一步的缩小天线在电子设备中所需的体积，也就可以减小电子设备的体积，使电子设备更加轻薄，美观。或者可以在电子设备 体积和结构不变的情况下，得到更好的天线性能。
虽然已经通过例子对本发明的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上例子仅是为了进行说明，而不是为了限制本发明的范围。本领域的技术人员应该理解，可在不脱离本发明的范围和精神的情况下，对以上实施例进行修改。本发明的范围由所附权利要求来限定。

Claims (10)

  1. 一种电子设备，其特征在于，包括第一电路板、信号线、第一导电元件和辐射臂，第一导电元件设置在辐射臂上，所述第一导电元件由高介电常数材料构成，内部具有导电结构，并向外部引出接地触点与馈电触点，第一电路板的馈电端通过所述信号线与所述第一导电元件的馈电触点电连接，所述辐射臂的一端与所述第一导电元件的接地触点电连接，所述辐射臂的另一端接地。
  2. 根据权利要求1所述的电子设备，其特征在于，所述辐射臂由印制电路板、柔性电路板、由激光直接成型技术形成的导体面和金属片中的一种或多种电连接而成。
  3. 根据权利要求1或2所述的电子设备，其特征在于，所述辐射臂包括第二电路板和延长地，延长地为柔性电路板或金属片，所述第一导电元件设置在所述第二电路板上，延长地的一端通过所述第二电路板与所述第一导电元件的接地触点电连接，延长地的另一端接地。
  4. 根据权利要求1-3任一所述的电子设备，其特征在于，所述第一导电元件的馈电触点与所述第一电路板的馈电端正对。
  5. 根据权利要求1-4任一所述的电子设备，其特征在于，所述辐射臂的有效辐射长度为蓝牙频段的四分之一波长。
  6. 根据权利要求1-5任一所述的电子设备，其特征在于，所述第一电路板由若干段通过柔性电路板电连接的印刷电路板构成。
  7. 根据权利要求1-6任一所述的电子设备，其特征在于，所述第一导电元件包含有若干个接地触点。
  8. 根据权利要求1-7任一所述的电子设备，其特征在于，所述电子设备为无线耳机，无线耳机还包括机壳和电池，机壳为中空结构，具有入耳部和耳柄部，所述第一电路板设置于入耳部内，电池设置于耳柄部内，入耳部内设置有扬声器，所述辐射臂位于第一电路板和电池远离所述扬声器的一侧，并与所述第一电路板和电池之间间隔有间隙，所述辐射臂位于 机壳内，并在耳柄部内延伸接地。
  9. 根据权利要求1-8任一所述的电子设备，其特征在于，所述辐射臂与电池负极电连接，进行接地。
  10. 根据权利要求1-9任一所述的电子设备，其特征在于，所述电子设备为无线耳机，无线耳机还包括机壳和电池，机壳为中空结构，具有入耳部和耳柄部，所述电池设置于入耳部内，第一电路板部分或全部设置于耳柄部内，入耳部内设置有扬声器，所述辐射臂位于第一电路板和电池的远离所述扬声器的一侧，并与所述第一电路板和电池之间间隔有间隙，所述辐射臂位于机壳内，并在耳柄部内延伸接地。
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