WO2022116290A1 - 天线模组及移动终端 - Google Patents

天线模组及移动终端 Download PDF

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Publication number
WO2022116290A1
WO2022116290A1 PCT/CN2020/137556 CN2020137556W WO2022116290A1 WO 2022116290 A1 WO2022116290 A1 WO 2022116290A1 CN 2020137556 W CN2020137556 W CN 2020137556W WO 2022116290 A1 WO2022116290 A1 WO 2022116290A1
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WO
WIPO (PCT)
Prior art keywords
radiator
antenna module
resonance
capacitor
extension
Prior art date
Application number
PCT/CN2020/137556
Other languages
English (en)
French (fr)
Inventor
韩洪娟
刘见传
岳月华
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)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.)
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Publication date
Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022116290A1 publication Critical patent/WO2022116290A1/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
    • 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
    • H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them

Definitions

  • the present invention relates to the field of communications, in particular to an antenna module and a mobile terminal.
  • the purpose of the present invention is to provide a miniaturized antenna module and a mobile terminal.
  • an antenna module comprising a feed source, a system ground, a first radiator and a second radiator, the first radiator and the second radiator are arranged at intervals, and the second radiator
  • the radiator is connected to the system ground;
  • the first radiator includes a first radiating part and a second radiating part arranged at intervals, the first radiating part is located between the second radiating part and the second radiating body, so
  • the feed source is electrically connected to the first radiating part, and the feed source is used to provide an excitation signal to the first radiating part, so that the first radiator and the second radiator generate a first resonance, The second resonance and the third resonance.
  • the antenna module further includes a substrate, the substrate includes a first surface, a second surface and a third surface connected in sequence, the first surface and the third surface are arranged opposite to each other, at least part of the second surface
  • the radiator is located on the first surface, at least part of the first radiating part is located on the second surface, and at least part of the second radiating part is located on the third surface.
  • the second radiator includes a first main body part and a first extension part that are connected to each other, the first main body part is located on the first surface, and the first extension part passes through the first surface.
  • the second surface extends to the third surface, and the second radiator is connected to the ground through the first extension portion.
  • the first radiation part includes a second body part, a second extension part and a third extension part, the second body part is located on the second surface; the second extension part and the second body the second extension part extends from the second surface to the third surface; the first radiating part is electrically connected to the feed through the second extension part; the third extension part connected with the second main body, the third extension extends from the second surface to the third surface, the third extension and the second extension are spaced apart, and the second radiation The portion is located between the second extension portion and the third extension portion.
  • the frequency range of the first resonance includes 1710MHz to 2690MHz
  • the frequency range of the second resonance includes 3400MHz to 4200MHz
  • the frequency range of the third resonance includes 4800MHz to 5000MHz.
  • the antenna module further includes a tuning circuit, and the tuning circuit is coupled between the first radiating part and the second radiating part.
  • the tuning circuit includes a first inductor and a first capacitor
  • the first inductor includes a first end and a second end, the first end is electrically connected to the first radiation part, and the second end Electrically connected to the second radiation part, the first capacitor is connected in parallel between the first end and the second end.
  • a matching circuit is further included, the matching circuit is coupled between the feed source and the first radiation part, and the matching circuit is used to perform impedance matching on the excitation signal.
  • the matching circuit includes a second inductor, a third inductor, a second capacitor and a third capacitor, and the feed source, the second inductor, the third inductor and the first radiation part are connected in series in sequence ;
  • One end of the second capacitor is electrically connected between the feed source and the second inductor, and the other end of the second capacitor is connected to the system ground;
  • one end of the third capacitor is electrically connected to the second Between the inductor and the third inductor, the other end of the third capacitor is connected to the system ground.
  • the present invention also provides a mobile terminal, which includes the above-mentioned antenna module.
  • the antenna module of the present invention includes a feed source, a first radiator and a second radiator, the first radiator includes a first radiator and a second radiator arranged at intervals, and the first radiator is located between the second radiator and the second radiator. Between the radiators, the feed source and the first radiator are electrically connected. Since the first radiator is located between the second radiator and the second radiator, when the feed source provides the excitation signal to the first radiator, the first radiator can Electromagnetic coupling is generated with the first radiator and the second radiator, so that the first radiator and the second radiator can generate the first resonance, the second resonance and the third resonance.
  • the antenna module of the present invention can generate three resonances by using two radiators, the antenna module can resonate more frequency bands, and can reduce the area occupied by the radiators, thereby realizing the miniaturization of the antenna module.
  • FIG. 1 is a first structural schematic diagram of an antenna module provided by the present invention
  • Fig. 2 is the S parameter curve diagram of the antenna module shown in Fig. 1;
  • FIG. 3 is a schematic diagram of a second structure of the antenna module provided by the present invention.
  • FIG. 4 is a schematic structural diagram of the second radiator shown in FIG. 3;
  • FIG. 5 is a schematic structural diagram of the first radiator shown in FIG. 3;
  • FIG. 6 is a schematic diagram of an electrical connection of the antenna module provided by the present invention.
  • Fig. 7 is the S-parameter curve diagram of the tuning circuit shown in Fig. 6;
  • Fig. 8 is the equivalent inductance value curve diagram of the tuning circuit shown in Fig. 6;
  • Fig. 9 is the equivalent capacitance value curve diagram of the tuning circuit shown in Fig. 6;
  • Fig. 10 is the efficiency curve diagram of the antenna module shown in Fig. 6;
  • FIG. 11 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of a first structure of an antenna module provided by the present invention.
  • the antenna module 10 may include a feed source 11 , a first radiator 12 , a second radiator 13 and a system ground 14 .
  • the second radiator 13 may be spaced apart from the first radiator 12 .
  • the first radiator 12 may include a first radiating part 121 and a second radiating part 122, the first radiating part 121 and the second radiating part 122 are spaced apart and there is a gap therebetween, and at least part of the first radiating part 121 may be located in the first radiating part 121. between the two radiators 122 and the second radiator 13 .
  • the second radiator 13 is connected to the system ground 14 .
  • a ground terminal (not shown) may be provided on the second radiator 13 , and the second radiator 13 may be electrically connected to the system ground 14 through the ground terminal.
  • the feed source 11 may be electrically connected to the first radiation part 121 .
  • a feeding terminal (not shown) may be provided on the first radiating part 121 , and the feeding source 11 may be electrically connected to the first radiating part 121 through the feeding terminal.
  • the feed source 11 can provide the excitation signal to the first radiating part 121 .
  • the first radiating part 121 is located between the second radiating part 122 and the second radiating body 13 .
  • the first radiator 121 can either feed the excitation signal to the second radiator 122 through electromagnetic coupling to form resonance, and the first radiator 121 can also feed the excitation signal to the second radiator 13 through electromagnetic coupling to form resonance , the first radiator 121 can also feed the excitation signal to the second radiator 122 and the second radiator 13 at the same time to form resonance, so that the first radiator 12 and the second radiator 13 can generate the first resonance, the second Second resonance and third resonance.
  • the first radiator 12 and the second radiator 13 may jointly generate one, two or three of the first resonance, the second resonance and the third resonance. That is to say, when the feed source 11 feeds the excitation signal to the first radiator 121, the first radiator 12 and the second radiator 13 can resonate the above three resonances at the same time, and the first radiator 12 and the second radiator 13 can resonate at the same time. 13 can also resonate one or two of the above three resonances at the same time.
  • the first resonance, the second resonance and the third resonance may be three resonances with different frequency ranges.
  • FIG. 2 is an S-parameter curve diagram of the antenna module shown in FIG. 1 . It can be seen from FIG. 2 that the antenna module 10 of the present invention can form three resonances, wherein the frequency range of the first resonance can include 1710MHz to 2690MHz, the frequency range of the second resonance can include 3400MHz to 4200MHz, and the third resonance frequency range can be included.
  • the frequency band range can include 4800MHz to 5000MHz.
  • the antenna module 10 of the present invention includes a feed source 11, a first radiator 12 and a second radiator 13.
  • the first radiator 12 includes a first radiating part 121 and a second radiating part 122 arranged at intervals.
  • the first radiating part 121 is located between the second radiator 122 and the second radiator 13, and the feed 11 is electrically connected to the first radiator 121. Since the first radiator 121 is located between the second radiator 122 and the second radiator 13, when The feed 11 provides the excitation signal to the first radiator 121, and the first radiator 121 can generate electromagnetic coupling with the second radiator 13 and the second radiator 122, so that the first radiator 12 and the second radiator 13 can generate the first radiator.
  • the antenna module 10 of the present invention can generate three resonances by using two radiators. Compared with the solution in the related art that requires three radiators to generate three resonances, the present invention can save one radiator, so that the The antenna module 10 can not only resonate more frequency bands, but also can reduce the area occupied by the radiator, and can realize the miniaturization of the antenna module 10 .
  • FIG. 3 is a schematic diagram of a second structure of the antenna module provided by the present invention.
  • the antenna module 10 of the present invention may further include a substrate 15 , and the substrate 15 may carry or form the first radiator 12 and the second radiator 13 .
  • the substrate 15 may include a first surface 151 , a second surface 152 and a third surface 153 which are connected in sequence, the first surface 151 and the third surface 153 are disposed opposite to each other, and the second surface 152 is located on the first surface 151 Between the second surface 152 and the third surface 153 , the first surface 151 and the third surface 153 are simultaneously connected, so that the first surface 151 , the second surface 152 and the third surface 153 are not coplanar.
  • the substrate 15 may be an antenna support for supporting or forming the first radiator 12 and the second radiator 13 .
  • the substrate 15 can also be a middle frame or other casing of the mobile terminal.
  • the substrate 15 can not only form or support the first radiator 12 and the second radiator 13 , but also serve as the skeleton of the mobile terminal, so that the substrate 15 can be multiplexed. .
  • At least part of the second radiator 13 may be located on the first surface 151
  • at least part of the first radiating part 121 may be located on the second surface 152
  • at least part of the second radiating part 122 may be located on the third surface 153 . Since the second surface 152 is located between the first surface 151 and the third surface 153 , the first radiation part 121 may be located between the second radiator 13 and the second radiation part 122 .
  • the second radiator 13 , the first radiating part 121 and the second radiating part 122 are arranged on the first surface 151 , the second surface 152 and the third surface 153 of the substrate 15 .
  • the surface 151, the second surface 152 and the third surface 153 are not coplanar, the second radiator 13, the first radiating part 121 and the second radiating part 122 can be arranged on different surfaces, so that the length of the radiator on a certain surface can be avoided Too long will increase the size of the antenna module 10 .
  • the first radiator 12 and the second radiator 13 may be disposed on the base plate 15, for example, but not limited to be fixed on the base plate 15 by means of bonding, riveting, welding, and the like.
  • the first radiator 12 and the second radiator 13 can also be formed on the substrate 15 , for example, can be formed on the above-mentioned surface of the substrate 15 by, but not limited to, etching, spraying a silver paste material, and the like.
  • the first radiation portion 121 may be entirely located on the second surface 152 , or may be partially located on the second surface 152 .
  • the second radiation portion 122 may be entirely located on the third surface 153 , or may be partially located on the third surface 153 .
  • the second radiator 13 may be entirely located on the first surface 151 , or may be partially located on the first surface 151 .
  • FIG. 4 is a schematic structural diagram of the second radiator shown in FIG. 3 .
  • the second radiator 13 may include a first body part 131 and a first extension part 132 .
  • the first body portion 131 and the first extension portion 132 may be connected to each other, the first body portion 131 may be located on the first surface 151 of the substrate 15 , and the first body portion 131 may serve as the main radiation area of the second radiator 13 .
  • the first extension part 132 may extend from the first surface 151 to the third surface 153 through the second surface 152 in the area connected to the first main body part 131 , that is, the first extension part 132 may be located on the first surface 151 and the third surface 153 at the same time.
  • the second side 152 and the third side 153 are examples of the first extension part 132 .
  • the second radiator 13 can be connected to the system ground 14 through the first extension part 132 , for example, the ground terminal can be set on the area of the first extension part 132 on the third surface 153 , and the second radiator 13 can be connected to the ground through the area of the first extension part 132 .
  • the terminal is electrically connected to the system ground 14 .
  • connection area 133 can be fixedly connected to other components through the connection area 133 .
  • the second radiator 13 can be fixed inside the mobile terminal by but not limited to welding, riveting, gluing, etc. in the connection area 133 .
  • the ground terminal may also be disposed in the connection area 133
  • the second radiator 13 may also be connected to the system ground 14 through the ground terminal disposed in the connection area 133 .
  • the third surface 153 can be closer to the inside of the mobile terminal, and the second radiator 13
  • the first extension portion 132 or the connection area 133 is connected to the system ground 14
  • the ground terminal may be arranged on the area of the first extension portion 132 located on the third surface 153 , or the ground terminal may be arranged at the connection area 133 away from the second surface 152 , Therefore, the second radiator 13 can be connected to the system ground 14 in a region closer to the interior of the mobile terminal, which is more convenient for wiring.
  • FIG. 5 is a schematic structural diagram of the first radiator shown in FIG. 3 .
  • the first radiation part 121 may include a second body part 1211 , a second extension part 1212 and a third extension part 1213 .
  • the second radiation part 122 may be located between the second extension part 1212 and the third extension part 1213 .
  • the second body portion 1211 may be located on the second surface 152 , and the second body portion 1211 may serve as a main radiation area of the first radiator 12 .
  • the first radiation part 121 may further include a fourth extension part 1214, the fourth extension part 1214 may be connected with the second main body part 1211, and the fourth extension part 1214 may be connected to the The area where the two main body parts 1211 are connected extends from the second surface 152 to the first surface 151 , and the fourth extending part 1214 can be disposed at a distance from the first main body part 131 .
  • the first radiator 12 when the first radiator 12 includes the fourth extension portion 1214 , the first radiator 12 can be fixed to the substrate 15 on the first surface 151 through the fourth extension portion 1214 , so as to improve the connection stability.
  • the second extension part 1212 may be connected with the second main body part 1211 , and the second extension part 1212 may extend from the second surface 152 to the third surface 153 in the area where the second surface 152 is connected with the second main body part 1211 .
  • a feed end may be provided on the extension portion 1212 , and the first radiating portion 121 may be electrically connected to the feed source 11 through the feed end provided on the second extension portion 1212 .
  • the third extension portion 1213 may be connected to the second main body portion 1211 , and the third extension portion 1213 may extend from the second surface 152 to the third surface 153 in the region where the second surface 152 and the second main body portion 1211 are connected.
  • the third extension part 1213 may be spaced apart from the second extension part 1212 .
  • the second extension part 1212 may be connected with one end of the second main body part 1211, and the third extension part 1213 may be connected with the other end of the second main body part 1211, so that when the second extension part 1212 and the third extension part 1213 are as described above After being extended in a manner, there is an interval area between the second extension part 1212 and the third extension part 1213 , and the second radiation part 122 can be located in the interval area.
  • the third extension portion 1213 may be located between the first extension portion 132 and the second radiation portion 122, so that the first radiation portion 121 may be located in the second radiation portion. between the body 13 and the second radiation part 122 .
  • the first radiating part 121 can be electrically connected to the second radiating part 122 through the third extending part 1213 .
  • the antenna module 10 may further include a tuning circuit 16 , and the tuning circuit 16 may be disposed between the third extending portion 1213 and the second radiating portion 122 , since the third extending portion 1213 and the second radiating portion 122 The distance between the radiation parts 122 is relatively short, which can save the wiring of the tuning circuit 16 .
  • the first radiating portion 121 includes a second extending portion 1212 and a third extending portion 1213, and both the second extending portion 1212 and part of the third extending portion 1213 are disposed on the third surface 153.
  • the connection distance between the first radiating part 121 and the feed 11 can be reduced;
  • the distance between the third extension part 1213 and the third extension part 1213 is relatively close, so that the tuning circuit 16 can be arranged between them.
  • the tuning circuit 16 may be coupled between the first radiating part 121 and the second radiating part 122 .
  • the tuning circuit 16 can adjust the resonant frequency of the antenna module 10 .
  • the tuning circuit 16 may be a combination of capacitors and inductors.
  • the tuning circuit 16 may include a first inductor L1 and a first capacitor C1, the first inductor L1 includes a first end a and a second end b, the first end a is electrically connected to the first radiation part 121, and the first The two terminals b are electrically connected to the second radiation portion 122 , and the first capacitor C1 is connected in parallel between the first terminal a and the second terminal b, so that the first inductor L1 and the first capacitor C1 can form an LC parallel resonant circuit.
  • the resonant frequency of the antenna module 10 can be adjusted by adjusting the inductance value of the first inductor L1 and the capacitance value of the first capacitor C1. For example, when the frequencies of the first resonance, the second resonance and the third resonance increase sequentially, the resonance point of the tuning circuit 16 may be located within the frequency range of the first resonance, and the tuning circuit 16 may adjust the first resonance and the second resonance resonance depth.
  • FIG. 7 is a graph of the S-parameter of the tuning circuit shown in FIG. 6
  • FIG. 8 is a graph of the equivalent inductance value of the tuning circuit shown in FIG. 6
  • 9 is a graph of the equivalent capacitance value of the tuning circuit shown in FIG. 6
  • FIG. 10 is a graph of the efficiency of the antenna module shown in FIG. 6 .
  • the resonance point of the tuning circuit 16 may be near the frequency point of 1900MHz, such as As shown in Figures 7 and 8, the region with the frequency lower than the resonance point is the inductive region; as shown in Figures 7 and 9, the region with the frequency higher than the resonance point is the capacitive region.
  • the tuning circuit 16 can optimize the efficiency sag between the frequency bands of 1710MHz to 2690MHz and 3400MHz to 4200MHz, and improve the efficiency of the frequency band edge.
  • the tuning circuit 16 can adjust the resonance depth of the first resonance and the second resonance, and improve the System efficiency for the first and second resonances.
  • the antenna module 10 of the present invention may further include a matching circuit 17, the matching circuit 17 may be coupled between the feed source 11 and the first radiating portion 121, and the matching circuit 17 may be used for the feed source 11.
  • the supplied excitation signal is impedance matched.
  • the matching circuit 17 can be any combination of capacitors and inductors.
  • the matching circuit 17 may include a second inductance L2, a third inductance L3, a second capacitance C2 and a third capacitance C3, the feed source 11, the second inductance L2, the third inductance L3 and the first radiation
  • the sections 121 may be serially connected in series.
  • One end of the second capacitor C2 can be electrically connected between the feed source 11 and the second inductor L2, and the other end of the second capacitor C2 can be connected to the system ground 14; one end of the third capacitor C3 can be electrically connected to the second inductor L2 and the third capacitor C3.
  • the other end of the third capacitor C3 can be connected to the system ground 14.
  • a matching circuit 17 is coupled between the feed source 11 and the first radiating part 121 , and the matching circuit 17 can adjust the resonance frequency, resonance depth, At least one of the frequency offsets, so that under the action of the matching circuit 17 , the radiation performance of the antenna module 10 can be further improved.
  • the first resonance, the second resonance and the third resonance may cover 1710 MHz to 2690 MHz, 3400 MHz to 4200 MHz, and 4800 MHz to 5000 MHz, so that the antenna module 10 of the embodiment of the present invention can be used as a 5G antenna applied to mobile terminals.
  • FIG. 11 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
  • the mobile terminal 100 may be a device such as a smart phone, a tablet computer, a game device, an augmented reality (Augmented Reality, AR) device, a notebook computer, a desktop computing device, and the like.
  • AR Augmented Reality
  • the following embodiments are described by taking the mobile terminal 100 as a smart phone as an example.
  • the mobile terminal 100 may include the antenna module 10 , the middle frame 20 , the circuit board 30 and the rear case 40 in the above embodiment.
  • the antenna module 10 may be disposed on the middle frame 20 , the circuit board 30 or the rear case 40 .
  • the middle frame 20 may be a thin plate-like or sheet-like structure, and may also be a hollow frame structure.
  • the middle frame 20 is used to provide support for electronic devices or functional components in the mobile terminal 100 .
  • the circuit board 30 may be disposed on the middle frame 20 for fixing, and the circuit board 30 may be sealed inside the mobile terminal 100 through the rear case 40 .
  • the circuit board 30 may be provided with the feed 11 in the above embodiment.
  • the rear case 40 is connected to the middle frame 20 , and together with the middle frame 20 , the rear case 40 can seal the electronic devices and functional components of the mobile terminal 100 inside the mobile terminal 100 .
  • the middle frame 20 , the circuit board 30 and the rear case 40 include metal structures
  • the middle frame 20 , the circuit board 30 or the rear case 40 can all be used as the system ground 14 of the antenna module 10 .
  • the mobile terminal 100 may also be provided with a small metal plate as the system ground 14 of the antenna module 10 .
  • the present invention does not limit the specific structure of the system ground 14 .
  • the mobile terminal 100 of the present invention may include two above-mentioned antenna modules 10, and the two antenna modules 10 may be arranged in a direction parallel to the edge of the mobile terminal 100.
  • the two antenna modules 10 may be arranged in a direction parallel to the middle
  • the frame 20 is arranged in the length direction, the two antenna modules 10 can be arranged at intervals, and the antenna spacing between the two can be only 1 mm.
  • the isolation between the two antenna modules 10 can be less than -10dB, and a single
  • the total length of the antenna module 10 in the direction parallel to the length of the middle frame 20 is also less than 20 mm. Therefore, the antenna module 10 of the present invention occupies less space and requires less clearance for the antenna, and is especially suitable for moving a full screen. Terminal 100.
  • the mobile terminal 100 may further include a display screen (not shown) and a battery (not shown in the figure), the display screen may be disposed on the middle frame 20 and connected to the rear case 40 through the middle frame 20, and the display screen Used to display information such as images, text, etc.
  • the battery is disposed on the middle frame 20, and is sealed inside the mobile terminal 100 through the rear case 40, and the battery can supply power to the electronic device.
  • the structure of the mobile terminal 100 of the present invention is not limited to this, for example, it may also include but not limited to structures such as a camera module, a sensor module, etc., which will not be repeated here.

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Abstract

本发明提供了一种天线模组和移动终端，天线模组包括馈源、系统地、第一辐射体和第二辐射体，第一辐射体与第二辐射体间隔设置，第二辐射体接系统地；第一辐射体包括间隔设置的第一辐射部和第二辐射部，第一辐射部位于第二辐射部与第二辐射体之间，馈源与第一辐射部电连接，馈源用于向第一辐射部提供激励信号，以使第一辐射体和第二辐射体共同产生第一谐振、第二谐振和第三谐振。本发明的天线模组可以辐射更多频段且体积更小。

Description

天线模组及移动终端
本发明要求于2020年12月04日提交中国专利局、申请号为202022910583.5、发明名称为“天线模组及移动终端”的中国专利申请的优先权，其全部内容通过引用结合在本发明中。
技术领域
本发明涉及通讯领域，尤其涉及一种天线模组及移动终端。
 背景技术
随着通信技术的发展，诸如智能手机等电子设备能够实现的功能越来越多，电子设备的通信模式也更加多样化。可以理解的，电子设备的每一种通信模式都需要相应的天线来支持。
但是，伴随着电子技术的发展，电子设备越来越小型化、轻薄化，电子设备的内部空间也越来越小。而相关技术中的天线模组的体积较大，无法适应日益轻薄化的移动终端。
因此，有必要提供一种小型化的天线模组。
 技术问题
本发明的目的在于提供一种小型化的天线模组及移动终端。
 技术解决方案
本发明的技术方案如下：一种天线模组，包括馈源、系统地、第一辐射体和第二辐射体，所述第一辐射体与所述第二辐射体间隔设置，所述第二辐射体接系统地；所述第一辐射体包括间隔设置的第一辐射部和第二辐射部，所述第一辐射部位于所述第二辐射部与所述第二辐射体之间，所述馈源与所述第一辐射部电连接，所述馈源用于向所述第一辐射部提供激励信号，以使所述第一辐射体和所述第二辐射体产生第一谐振、第二谐振和第三谐振。
优选的，天线模组还包括基板，所述基板包括顺次连接的第一面、第二面和第三面，所述第一面和所述第三面相对设置，至少部分所述第二辐射体位于所述第一面，至少部分所述第一辐射部位于所述第二面，至少部分所述第二辐射部位于所述第三面。
优选的，所述第二辐射体包括相互连接的第一主体部和第一延伸部，所述第一主体部位于所述第一面，所述第一延伸部从所述第一面经所述第二面延伸至所述第三面，所述第二辐射体通过所述第一延伸部接系统地。
优选的，所述第一辐射部包括第二主体部、第二延伸部和第三延伸部，所述第二主体部位于所述第二面；所述第二延伸部与所述第二主体部连接，所述第二延伸部从所述第二面延伸至所述第三面，所述第一辐射部通过所述第二延伸部与所述馈源电连接；所述第三延伸部与所述第二主体部连接，所述第三延伸部从所述第二面延伸至所述第三面，所述第三延伸部与所述第二延伸部间隔设置，所述第二辐射部位于所述第二延伸部与所述第三延伸部之间。
优选的，所述第一谐振的频段范围包括1710MHz至2690MHz，所述第二谐振的频段范围包括3400MHz至4200MHz，所述第三谐振的频段范围包括4800MHz至5000MHz。
优选的，天线模组还包括调谐电路，所述调谐电路耦合在所述第一辐射部和所述第二辐射部之间。
优选的，所述调谐电路包括第一电感和第一电容，所述第一电感包括第一端和第二端，所述第一端与所述第一辐射部电连接，所述第二端与所述第二辐射部电连接，所述第一电容并联在所述第一端和第二端之间。
优选的，还包括匹配电路，所述匹配电路耦合在所述馈源与所述第一辐射部之间，所述匹配电路用于对所述激励信号进行阻抗匹配。
优选的，所述匹配电路包括第二电感、第三电感、第二电容和第三电容，所述馈源、所述第二电感、所述第三电感和所述第一辐射部顺次串联；所述第二电容的一端电连接于所述馈源与所述第二电感之间，所述第二电容的另一端接系统地；所述第三电容的一端电连接于所述第二电感和所述第三电感之间，所述第三电容的另一端接系统地。
本发明还提供一种移动终端，所述移动终端包括上述天线模组。
 有益效果
本发明的天线模组包括馈源、第一辐射体和第二辐射体，第一辐射体包括间隔设置的第一辐射部和第二辐射部，第一辐射部位于第二辐射部与第二辐射体之间，馈源与第一辐射部电连接，由于第一辐射部位于第二辐射部与第二辐射体之间，当馈源向第一辐射部提供激励信号，第一辐射部可以与第一辐射体、第二辐射部产生电磁耦合，从而第一辐射体和第二辐射体可以产生第一谐振、第二谐振和第三谐振。本发明的天线模组利用两个辐射体可以产生三个谐振，天线模组既可以谐振较多的频段，又可以减少辐射体占据的面积，可以实现天线模组的小型化。
 附图说明
图1为本发明提供的天线模组的第一种结构示意图；
图2为图1所示的天线模组的S参数曲线图；
图3为本发明提供的天线模组的第二种结构示意图；
图4为图3所示的第二辐射体的一种结构示意图；
图5为图3所示的第一辐射体的一种结构示意图；
图6为本发明提供的天线模组的一种电连接示意图；
图7为图6所示的调谐电路的S参数曲线图；
图8为图6所示的调谐电路的等效电感值曲线图；
图9为图6所示的调谐电路的等效电容值曲线图；
图10为图6所示的天线模组的效率曲线图；
图11为本发明实施例提供的移动终端的一种结构示意图。
 本发明的实施方式
下面结合附图1至11和实施方式对本发明作进一步说明。
请参考图1，图1为本发明提供的天线模组的第一种结构示意图。天线模组10可以包括馈源11、第一辐射体12、第二辐射体13和系统地14。
如图1所示，第二辐射体13可以与第一辐射体12间隔设置。第一辐射体12可以包括第一辐射部121和第二辐射部122，第一辐射部121与第二辐射部122间隔设置，二者之间存在间隙，至少部分第一辐射部121可以位于第二辐射部122与第二辐射体13之间。
其中，第二辐射体13接系统地14。例如第二辐射体13上可以设置接地端（图未示），第二辐射体13可以通过该接地端与系统地14电连接。
其中，馈源11可以与第一辐射部121电连接。例如，第一辐射部121上可以设置馈电端（图未示），馈源11可以通过该馈电端与第一辐射部121电连接。馈源11可以向第一辐射部121提供激励信号，当馈源11向第一辐射部121馈入激励信号时，由于第一辐射部121位于第二辐射部122与第二辐射体13之间，第一辐射部121既可以通过电磁耦合向第二辐射部122馈入该激励信号以形成谐振，第一辐射部121也可以通过电磁耦合向第二辐射体13馈入该激励信号以形成谐振，第一辐射部121也可以同时向第二辐射部122和第二辐射体13馈入该激励信号以形成谐振，从而，第一辐射体12和第二辐射体13可以产生第一谐振、第二谐振和第三谐振。
可以理解的是，第一辐射体12和第二辐射体13可以共同产生第一谐振、第二谐振和第三谐振中的一个、两个或三个。也就是说，当馈源11向第一辐射部121馈入激励信号时，第一辐射体12和第二辐射体13可以同时谐振出上述三个谐振，第一辐射体12和第二辐射体13也可以同时谐振出上述三个谐振中的一个或两个。
可以理解的是，第一谐振、第二谐振和第三谐振可以是频段范围不同的三个谐振。示例性的，请参考图2，图2为图1所示的天线模组的S参数曲线图。由图2可以看出，本发明的天线模组10可以形成出三个谐振，其中，第一谐振的频段范围可以包括1710MHz至2690MHz，第二谐振的频段范围可以包括3400MHz至4200MHz，第三谐振的频段范围可以包括4800MHz至5000MHz。
本发明的天线模组10，包括馈源11、第一辐射体12和第二辐射体13，第一辐射体12包括间隔设置的第一辐射部121和第二辐射部122，第一辐射部121位于第二辐射部122与第二辐射体13之间，馈源11与第一辐射部121电连接，由于第一辐射部121位于第二辐射部122与第二辐射体13之间，当馈源11向第一辐射部121提供激励信号，第一辐射部121可以与第二辐射体13、第二辐射部122产生电磁耦合，从而第一辐射体12和第二辐射体13可以产生第一谐振、第二谐振和第三谐振。本发明的天线模组10利用两个辐射体可以产生三个谐振，相较于相关技术中产生三个谐振需要三个辐射体的方案而言，本发明可以节省一个辐射体，从而本发明的天线模组10既可以谐振较多的频段，又可以减少辐射体占据的面积，可以实现天线模组10的小型化。
其中，请参考图3，图3为本发明提供的天线模组的第二种结构示意图。本发明的天线模组10还可以包括一基板15，该基板15可以承载或形成第一辐射体12和第二辐射体13。
如图3所示，基板15可以包括顺次连接的第一面151、第二面152和第三面153，第一面151和第三面153相对设置，第二面152位于第一面151和第三面153之间，第二面152同时连接第一面151和第三面153，从而第一面151、第二面152和第三面153不共面。
可以理解的是，基板15可以是天线支架，用于支撑或形成第一辐射体12和第二辐射体13。或者，基板15也可以是移动终端的中框或其他壳体，基板15既可以形成或支撑第一辐射体12和第二辐射体13，也可以作为移动终端的骨架，使得基板15实现复用。
其中，至少部分第二辐射体13可以位于第一面151，至少部分第一辐射部121可以位于第二面152，至少部分第二辐射部122可以位于第三面153。由于第二面152位于第一面151和第三面153之间，从而第一辐射部121可以位于第二辐射体13和第二辐射部122之间。
本发明的天线模组10，将第二辐射体13、第一辐射部121和第二辐射部122设置于基板15的第一面151、第二面152和第三面153上，由于第一面151、第二面152和第三面153不共面，第二辐射体13、第一辐射部121和第二辐射部122可以设置于不同面上，从而可以避免某一面上的辐射体长度过长而增加天线模组10的尺寸。
可以理解的是，第一辐射体12和第二辐射体13可以设置于基板15上，例如通过但不限于粘接、铆接、焊接等方式固定在基板15上。第一辐射体12和第二辐射体13也可以形成于基板15上，例如，可以通过但不限于蚀刻、喷涂银浆材料等方式形成在基板15上述表面上。
可以理解的是，第一辐射部121可以全部位于第二面152，也可以部分位于第二面152。同理，第二辐射部122可以全部位于第三面153，也可以部分位于第三面153。第二辐射体13可以全部位于第一面151，也可以部分位于第一面151。
请结合图3并请参考图4，图4为图3所示的第二辐射体的一种结构示意图。第二辐射体13可以包括第一主体部131和第一延伸部132。
其中，第一主体部131和第一延伸部132可以相互连接，第一主体部131可以位于基板15的第一面151，第一主体部131可以作为第二辐射体13的主要辐射区域。第一延伸部132可以在与第一主体部131连接的区域从第一面151经第二面152延伸至第三面153，也即，第一延伸部132可以同时位于第一面151、第二面152和第三面153。第二辐射体13可以通过该第一延伸部132接系统地14，例如接地端可以设置于第一延伸部132处于第三面153的区域上，第二辐射体13可以通过位于该区域的接地端与系统地14电连接。
可以理解的，第一延伸部132延伸至第三面153后，还可以继续朝着平行于第二面152且远离第二面152的方向延伸并形成连接区133，连接区133与第一延伸部132相互连接，第二辐射体13可以通过该连接区133与其他部件固定连接。例如，当天线模组10设置于移动终端内部时，第二辐射体13可以在该连接区133通过但不限于焊接、铆接、粘接等方式固定在移动终端内部。再例如，接地端也可以设置于该连接区133，第二辐射体13也可以通过设置于该连接区133的接地端接系统地14。
本发明的天线模组10，由于第一面151和第三面153相对设置，当天线模组10设置于移动终端内部时，该第三面153可以更靠近移动终端内部，第二辐射体13通过第一延伸部132或连接区133接系统地14，接地端可以设置于第一延伸部132位于第三面153的区域上，或者接地端可以设置于远离第二面152的连接区133，从而第二辐射体13可以在更靠近移动终端内部的区域接系统地14，更便于布线。
其中，请结合图3并请参考图5，图5为图3所示的第一辐射体的一种结构示意图。第一辐射部121可以包括第二主体部1211、第二延伸部1212和第三延伸部1213。第二辐射部122可以位于第二延伸部1212与第三延伸部1213之间。
其中，第二主体部1211可以位于第二面152，第二主体部1211可以作为第一辐射体12的主要辐射区域。可以理解的是，如图5所示，第一辐射部121还可以包括第四延伸部1214，该第四延伸部1214可以与第二主体部1211连接，并且第四延伸部1214可以在与第二主体部1211连接的区域从第二面152延伸至第一面151，该第四延伸部1214可以与第一主体部131间隔设置。
可以理解的是，当第一辐射体12包括第四延伸部1214时，第一辐射体12可以在第一面151通过该第四延伸部1214与基板15固定，以提高第一辐射体12的连接稳定性。
其中，第二延伸部1212可以与第二主体部1211连接，第二延伸部1212可以在第二面152与第二主体部1211连接的区域从第二面152延伸至第三面153，第二延伸部1212上可以设置馈电端，第一辐射部121可以通过设置于第二延伸部1212上的馈电端与馈源11电连接。
其中，第三延伸部1213可以与第二主体部1211连接，第三延伸部1213可以在第二面152与第二主体部1211连接的区域从第二面152延伸至第三面153。第三延伸部1213可以与第二延伸部1212间隔设置。例如，第二延伸部1212可以与第二主体部1211的一端连接，第三延伸部1213可以与第二主体部1211的另一端连接，从而当第二延伸部1212和第三延伸部1213按照上述方式延伸后，第二延伸部1212与第三延伸部1213之间存在一间隔区域，第二辐射部122可以位于该间隔区域中。
可以理解的是，从第三面153所在的方向上看，第三延伸部1213可以位于第一延伸部132与第二辐射部122之间，从而也可以实现第一辐射部121位于第二辐射体13与第二辐射部122之间。
可以理解的是，第一辐射部121可以通过该第三延伸部1213与第二辐射部122电连接。例如，请参考图1和图3，天线模组10还可以包括调谐电路16，调谐电路16可以设置在第三延伸部1213和第二辐射部122之间，由于第三延伸部1213和第二辐射部122距离较近，可以节省调谐电路16的走线。
本发明的天线模组10，第一辐射部121包括第二延伸部1212和第三延伸部1213，第二延伸部1212和部分第三延伸部1213均设置于第三面153，一方面，当天线模组10设置于移动终端内部时，可以减少第一辐射部121与馈源11的连接走线距离；另一方面，第二辐射部122也设置一第三面153，第二辐射部122和第三延伸部1213距离较近，便于在二者之间设置调谐电路16。
基于上述天线模组10的结构，请继续参考图1和图3，调谐电路16可以耦合在第一辐射部121和第二辐射部122之间。该调谐电路16可以调节天线模组10的谐振频率。该调谐电路16可以是电容、电感的组合。
示例性的，请参考图6，图6为本发明提供的天线模组的一种电连接示意图。如图6所示，调谐电路16可以包括第一电感L1和第一电容C1，第一电感L1包括第一端a和第二端b，第一端a与第一辐射部121电连接，第二端b与第二辐射部122电连接，第一电容C1并联在第一端a和第二端b之间，从而，第一电感L1和第一电容C1可形成一LC并联谐振电路。
其中，可以通过调整第一电感L1的电感值、第一电容C1的电容值来调节天线模组10的谐振频率。例如，当第一谐振、第二谐振和第三谐振的频率依次增大，调谐电路16的谐振点可以位于第一谐振的频率范围内，并且，调谐电路16可以调节第一谐振和第二谐振的谐振深度。
示例性的，请结合图6并请参考图7至图10，图7为图6所示的调谐电路的S参数曲线图，图8为图6所示的调谐电路的等效电感值曲线图，图9为图6所示的调谐电路的等效电容值曲线图，图10为图6所示的天线模组的效率曲线图。
当第一谐振的频段范围包括1710MHz至2690MHz，第二谐振的频段范围包括3400MHz至4200MHz，第三谐振的频段范围包括4800MHz至5000MHz时，该调谐电路16的谐振点可以在1900MHz频点附近，如图7和图8所示，频率低于该谐振点的区域为感性区；如图7和图9所示，频率高于该谐振点的区域为容性区。如图10所示，调谐电路16可以优化1710MHz至2690MHz以及3400MHz至4200MHz频段之间的效率凹陷，提升频段边缘频段的效率，调谐电路16可以调节第一谐振和第二谐振的谐振深度，并提升第一谐振和第二谐振的系统效率。
其中，请再次参考图6，本发明的天线模组10还可以包括匹配电路17，该匹配电路17可以耦合在馈源11与第一辐射部121之间，该匹配电路17可以对馈源11提供的激励信号进行阻抗匹配。
可以理解的是，匹配电路17可以是电容、电感的任意组合。例如，如图6所示，匹配电路17可以包括第二电感L2、第三电感L3、第二电容C2和第三电容C3，馈源11、第二电感L2、第三电感L3和第一辐射部121可以顺次串联。第二电容C2的一端可以电连接于馈源11与第二电感L2之间，第二电容C2的另一端可以接系统地14；第三电容C3的一端电连接于第二电感L2和第三电感L3之间，第三电容C3的另一端可以接系统地14。
本发明实施例的天线模组10，在馈源11与第一辐射部121之间耦合匹配电路17，匹配电路17可以调节第一谐振、第二谐振和第三谐振的谐振频率、谐振深度、频偏中的至少一个，从而在匹配电路17的作用下，可以进一步提升天线模组10的辐射性能。
本发明实施例的上述天线模组10，第一谐振、第二谐振和第三谐振可以覆盖1710MHz至2690MHz、3400MHz至4200MHz、4800MHz至5000MHz，从而本发明实施例的天线模组10可以作为5G天线应用于移动终端中。其中，请参考图11，图11为本发明实施例提供的移动终端的一种结构示意图。可以理解的是，该移动终端100可以是智能手机、平板电脑等设备、游戏设备、增强现实（Augmented Reality，简称AR）设备、笔记本电脑、桌面计算设备等。为便于理解，以下实施例以该移动终端100为智能手机为例进行描述。
如图11所示，移动终端100可以包括上述实施例中的天线模组10、中框20、电路板30和后壳40。天线模组10可以设置于中框20、电路板30或后壳40上。
中框20可以为薄板状或薄片状的结构，也可以为中空的框体结构。中框20用于为移动终端100中的电子器件或功能组件提供支撑作用。电路板30可以设置在中框20上以进行固定，并通过后壳40将电路板30密封在移动终端100的内部。电路板30上可以设置有上述实施例中的馈源11。后壳40与中框20连接，后壳40可与中框20共同将移动终端100的电子器件和功能组件密封在移动终端100内部。
可以理解的是，当中框20、电路板30、后壳40包括金属结构时，中框20、电路板30或后壳40均可以作为天线模组10的系统地14。当然，移动终端100也可以单独设置一金属小板作为天线模组10的系统地14。本发明对系统地14的具体结构不进行限定。
其中，本发明的移动终端100可以包括两个上述天线模组10，该两个天线模组10可以沿平行于移动终端100边缘的方向设置，例如，两个天线模组10可以沿平行于中框20长度方向设置，两个天线模组10可以间隔设置，二者之间的天线间距可以仅为1毫米，此时两个天线模组10之间的隔离度可小于-10dB，并且，单个天线模组10在平行于中框20长度方向上的总长度也小于20毫米，从而，本发明的天线模组10占据的空间较小，天线所需的净空小，特别适用于全面屏的移动终端100。
可以理解的是，移动终端100还可以包括显示屏（图未示）和电池（图未示），显示屏可以设置在中框20上，并通过中框20连接至后壳40上，显示屏用于显示图像、文本等信息。电池设置在中框20上，并通过后壳40将电池密封在移动终端100的内部，电池可为电子设备供电。
可以理解的是，本发明的移动终端100的结构并不局限于此，例如还可以包括但不限于摄像头模组、传感器模组等结构，在此不再赘述。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (10)

  1. 一种天线模组，其特征在于，包括馈源、系统地、第一辐射体和第二辐射体，所述第一辐射体与所述第二辐射体间隔设置，所述第二辐射体接系统地；所述第一辐射体包括间隔设置的第一辐射部和第二辐射部，所述第一辐射部位于所述第二辐射部与所述第二辐射体之间，所述馈源与所述第一辐射部电连接，所述馈源用于向所述第一辐射部提供激励信号，以使所述第一辐射体和所述第二辐射体产生第一谐振、第二谐振和第三谐振。
  2. 根据权利要求1所述的天线模组，其特征在于，还包括基板，所述基板包括顺次连接的第一面、第二面和第三面，所述第一面和所述第三面相对设置，至少部分所述第二辐射体位于所述第一面，至少部分所述第一辐射部位于所述第二面，至少部分所述第二辐射部位于所述第三面。
  3. 根据权利要求2所述的天线模组，其特征在于，所述第二辐射体包括相互连接的第一主体部和第一延伸部，所述第一主体部位于所述第一面，所述第一延伸部从所述第一面经所述第二面延伸至所述第三面，所述第二辐射体通过所述第一延伸部接系统地。
  4. 根据权利要求2所述的天线模组，其特征在于，所述第一辐射部包括第二主体部、第二延伸部和第三延伸部，所述第二主体部位于所述第二面；所述第二延伸部与所述第二主体部连接，所述第二延伸部从所述第二面延伸至所述第三面，所述第一辐射部通过所述第二延伸部与所述馈源电连接；所述第三延伸部与所述第二主体部连接，所述第三延伸部从所述第二面延伸至所述第三面，所述第三延伸部与所述第二延伸部间隔设置，所述第二辐射部位于所述第二延伸部与所述第三延伸部之间。
  5. 根据权利要求1所述的天线模组，其特征在于，所述第一谐振的频段范围包括1710MHz至2690MHz，所述第二谐振的频段范围包括3400MHz至4200MHz，所述第三谐振的频段范围包括4800MHz至5000MHz。
  6. 根据权利要求1所述的天线模组，其特征在于，还包括调谐电路，所述调谐电路耦合在所述第一辐射部和所述第二辐射部之间。
  7. 根据权利要求4所述的天线模组，其特征在于，所述调谐电路包括第一电感和第一电容，所述第一电感包括第一端和第二端，所述第一端与所述第一辐射部电连接，所述第二端与所述第二辐射部电连接，所述第一电容并联在所述第一端和第二端之间。
  8. 根据权利要求1所述的天线模组，其特征在于，还包括匹配电路，所述匹配电路耦合在所述馈源与所述第一辐射部之间，所述匹配电路用于对所述激励信号进行阻抗匹配。
  9. 根据权利要求8所述的天线模组，其特征在于，所述匹配电路包括第二电感、第三电感、第二电容和第三电容，所述馈源、所述第二电感、所述第三电感和所述第一辐射部顺次串联；所述第二电容的一端电连接于所述馈源与所述第二电感之间，所述第二电容的另一端接系统地；所述第三电容的一端电连接于所述第二电感和所述第三电感之间，所述第三电容的另一端接系统地。
  10. 一种移动终端，其特征在于，所述移动终端包括权利要求1至9任一项所述的天线模组。
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