WO2021213182A1 - 一种电子设备及天线装置 - Google Patents

一种电子设备及天线装置 Download PDF

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Publication number
WO2021213182A1
WO2021213182A1 PCT/CN2021/085806 CN2021085806W WO2021213182A1 WO 2021213182 A1 WO2021213182 A1 WO 2021213182A1 CN 2021085806 W CN2021085806 W CN 2021085806W WO 2021213182 A1 WO2021213182 A1 WO 2021213182A1
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WIPO (PCT)
Prior art keywords
antenna
metal body
antenna device
metal
cavity
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Application number
PCT/CN2021/085806
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English (en)
French (fr)
Inventor
邹真林
孙树辉
伊尔沃宁•珍妮
马国忠
陈峰文
梁娇
刘深鹏
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华为技术有限公司
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Publication of WO2021213182A1 publication Critical patent/WO2021213182A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/18—Resonant slot antennas the slot being backed by, or formed in boundary wall of, a resonant cavity ; Open cavity antennas
    • 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
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors

Definitions

  • This application relates to the field of terminal technology, and in particular to an electronic device and an antenna device.
  • Electronic devices such as mobile phones need to communicate through mobile communication networks provided by operators, and they can also implement communication connections between smart devices through various methods such as Wireless Fidelity (WIFI), Bluetooth, and infrared.
  • WIFI Wireless Fidelity
  • Bluetooth Bluetooth
  • infrared For mobile phones, communication signals are transmitted and received through antennas. Because the millimeter wave frequency band in the 5G spectrum has abundant spectrum resources and high data transmission rate, in the second stage of 5G development, mobile phones and other electronic equipment will mainly use millimeter wave antenna devices to transmit and receive communication signals to improve signal transmission rate.
  • a millimeter wave antenna device includes a first antenna radiator and a second antenna radiator, and a first feeder line and a second feeder line that are arranged opposite to each other with a reference floor.
  • the second antenna radiator is located between the reference floor and the first antenna radiator, and one end of the first and second feeders is connected to the second antenna
  • the radiator is signal connected, and the other end passes through the reference floor and is connected to the signal transmitting source signal, wherein the first feeder line and the second feeder line realize the horizontal polarization and the vertical polarization of the signal current respectively.
  • the signal transmitting source transmits the signal to the second antenna radiator by way of current through the first feeder and the second feeder, and the second antenna radiator transmits the current to the first antenna radiator through the coupling feeding method
  • the first antenna radiator and the second antenna radiator respectively emit electromagnetic waves of different frequency bands, thereby realizing signal transmission.
  • the millimeter-wave antenna device can cover the N257 and N258 dual frequency bands, which enables the antenna device to achieve a certain bandwidth while at the same time.
  • the vertical distance between the first antenna radiator of the antenna device and the reference floor must be increased, that is, the height of the antenna device must be increased, which increases the space occupied by the antenna device in the electronic equipment.
  • the present application provides an electronic device and an antenna device, which can achieve a certain bandwidth while reducing the size of the antenna device in the height direction, thereby saving the space occupied by the antenna device in the electronic device.
  • An embodiment of the application provides an antenna device, which includes a metal body, a signal emission source, at least one antenna radiator, and at least one feeder;
  • a cavity is formed in the metal body, each antenna radiator is suspended in the cavity, and the signal emission source is located outside the metal body;
  • the antenna radiator includes a first surface and a second surface opposite to the first surface, the signal transmission source feeds power to the second surface of the antenna radiator through the feeder line, and A plurality of slits are opened on the surface of the metal main body opposite to the first surface, so that electromagnetic waves inside the metal main body are emitted to the outside of the metal main body through the slits.
  • the antenna device is configured to include a metal body with a cavity, and at least one antenna radiator is arranged in the cavity of the metal body, and the antenna radiator is signal-connected to a signal emission source outside the metal body through a feeder.
  • the current on the antenna radiator will couple and excite the current on the inner surface of the metal cavity to form the TM 102 mode of the cavity, the current on the antenna radiator and the TM 102 of the cavity
  • the electromagnetic waves with two resonance points generated by the modes are radiated to the outside of the metal body through the gap on the metal body to realize signal transmission.
  • the metal body of the embodiment of the present application is a closed structure with a cavity, and a micro-slit structure is opened on the top wall of the cavity, the antenna formed by this structure has a smaller quality factor Therefore, the electromagnetic wave energy generated by the cavity of the metal body can be radiated to a greater extent, thereby increasing the radiation bandwidth of the antenna device.
  • the embodiment of the present application can guarantee a certain On the basis of the radiation bandwidth, the distance between the side of the metal body with the slot and the side facing away from the slot is reduced, that is, the height dimension of the antenna device, which saves the space occupied by the antenna device in the electronic equipment.
  • the metal body includes a top wall and a bottom wall that are arranged oppositely and in parallel, and a side wall located between the top wall and the bottom wall;
  • the top wall, the bottom wall and the side walls enclose a cavity of the metal body, and the gap is opened on the top wall.
  • the distance between the top wall and the bottom wall of the metal body with the gap is increased while increasing the circumference of the top wall, the bottom wall and the side wall.
  • the volume of the cavity is thus reduced to reduce the frequency of the resonance point generated by the cavity TM 102 mode, so that the size of the antenna device in the horizontal direction is reduced at the required operating frequency band.
  • the metal body is surrounded by the top wall and the bottom wall arranged in parallel and the side walls located between the top wall and the bottom wall, which also reduces the difficulty of manufacturing the metal body and improves the manufacturing efficiency of the antenna device.
  • the first end of the feed line is electrically connected to the signal emission source, and the second end of the feed line passes through the side wall or the bottom wall of the metal body and is connected to the signal transmission source.
  • the second surface of the antenna radiator is electrically connected, or the second end of the feed line passes through the side wall or the bottom wall of the metal body and is coupled with the second surface of the antenna radiator.
  • the current with the signal generated by the signal emitting source can be effectively transmitted To the feed point of the antenna radiator, so as to ensure that a stable current is generated on the antenna radiator.
  • the number of the antenna radiators is multiple, and the multiple antenna radiators are distributed in an array in the cavity, and two adjacent antenna radiators are arranged at intervals.
  • a plurality of antenna radiators arranged at intervals are arranged in the cavity of the metal body to increase the gain of the antenna device.
  • the metal wall between two adjacent antenna radiators is eliminated, thereby shortening the separation distance between adjacent antenna radiators, and while ensuring the performance of each unit antenna, it reduces
  • the size of the entire antenna device also solves the problem of grating lobes caused by the excessive spacing between two adjacent antenna radiators.
  • each of the antenna radiators is correspondingly connected with a first feeder line and a second feeder line, and the second end of one of the first feeder line and the second feeder line Connected to the horizontal axis of the antenna radiator, and the second end of the other of the first feeder line and the second feeder line is connected to the vertical axis of the antenna radiator.
  • each antenna radiator and the signal transmission source are connected to the second feeder through the first feeder line, and the second ends of the first feeder line and the second feeder line are respectively connected to the antenna radiator
  • the horizontal polarization and vertical polarization of the current transmitted from the signal transmitting source to the antenna radiator can be realized through the first feeder line and the second feeder line, so that the gap of the metal body can radiate horizontally Polarized waves and vertically polarized waves, so as to ensure that different types of signal receiving sources can receive the electromagnetic wave signal sent by the antenna device.
  • the second ends of the first feeder line and the second feeder line are both arranged close to the symmetry line of the two adjacent antenna radiators, so that the two adjacent antennas radiate
  • the body can simultaneously excite the cavity at the position of the symmetry line of the two adjacent antenna radiators to generate a zero electric field, ensuring that each antenna radiator can effectively excite the TM 102 mode of the cavity, thereby exciting the corresponding TM 102 mode
  • the electromagnetic wave, while ensuring that the TM 102 mode produces a stable resonance point.
  • the first ends of the first feeder line and the second feeder line pass through the side wall of the metal body and are connected to the signal emitting source to ensure the The first feeder line and the second feeder line transmit current to the antenna radiator, so that the TM 102 mode of the antenna radiator and the cavity together generate electromagnetic waves with a large broadband, and at the same time, the feeder is reduced in the vertical direction of the antenna radiator. It occupies the size in the direction, thereby effectively reducing the thickness of the antenna device.
  • the antenna device further includes at least one metal pillar
  • the metal column is vertically arranged between the top wall and the bottom wall of the metal body; and the metal column is located on the symmetry line of two adjacent antenna radiators.
  • the two adjacent antenna radiators can simultaneously excite the cavity at the position of the symmetry lines of the two adjacent antenna radiators to generate a zero electric field, ensuring Each antenna radiator can effectively excite the TM 102 mode of the cavity, thereby exciting the electromagnetic wave corresponding to the TM 102 mode, while ensuring that the TM 102 mode generates a stable resonance point.
  • the number of the antenna radiators is at least four, and at least four of the antenna radiators are arranged in the cavity of the metal body in a matrix manner, so that the antenna device forms a planar array The antenna, thereby realizing two-dimensional scanning on the plane where the antenna radiator is located, and improving the coverage area of the antenna device.
  • the number of the metal pillars is multiple, and the multiple metal pillars are arranged on the symmetry line of the two adjacent antenna radiators at intervals, so as to better maintain each antenna
  • the TM 102 mode of the cavity excited by the radiator ensures that the electromagnetic wave radiated by each unit antenna has two resonance points with good transmission performance.
  • the two ends of the metal column are respectively connected to the inner surfaces of the top wall and the bottom wall, so as to improve the stability of the metal column inside the metal body, and at the same time improve the resistance to the cavity. Maintenance effect of TM 102 mode.
  • the top wall of the metal body is provided with a plurality of the slits at intervals along the first direction and the second direction, and two ends of each slit respectively extend to opposite sides of the top wall.
  • first direction and the second direction are perpendicular to each other.
  • multiple gaps are arranged on the top wall of the metal body along two perpendicular directions, which not only ensures that the electromagnetic waves in the cavity of the metal body can be radiated to the external environment to a greater extent, and reduces energy loss,
  • the electromagnetic wave radiation bandwidth of the antenna device is ensured, and the arrangement of the above-mentioned slots makes the processing of the metal body more convenient, thereby improving the manufacturing efficiency of the antenna device.
  • the width of the slot is less than or equal to 15 ⁇ m, so as to be invisible to the naked eye, which can not only ensure the signal transmission performance of the antenna device, but also maintain the integrity of the metal body and improve the antenna
  • the appearance of the device is integrated.
  • the oxide layer is wrapped on the outer surface of the metal body to prevent the surface of the metal body from being oxidized and reduce its own conductivity, thereby ensuring the stability of the cavity TM 102 mode of the metal body.
  • the above-mentioned antenna device is installed in the electronic device, while ensuring the radiation bandwidth, the thickness of the antenna device is reduced, thereby saving the space occupied by the antenna device in the electronic device, and providing for the installation of other components. Effective space.
  • the back cover is a metal back cover
  • the metal back cover is configured as a metal body of the antenna device, and a side of the metal body with a slit is away from the display screen.
  • the metal back cover as the metal main body of the antenna device, it can ensure that the antenna device realizes the function of electromagnetic radiation while rationally using the structure of the electronic device itself, thereby effectively saving the space occupied by the antenna device in the electronic device. Improve the integration of electronic equipment.
  • electromagnetic waves radiate from the gap and interfere with the video display of the display screen. At the same time, it also ensures that more electromagnetic wave energy is sent to the signal receiving end to achieve sound, Effective transmission of video and other signals.
  • Fig. 1 is a schematic diagram of the structure of a conventional antenna device
  • FIG. 2 is a schematic diagram of the first structure of the antenna device provided in Embodiment 1 of the present application;
  • Figure 3 is an exploded view of Figure 2;
  • Figure 4 is a schematic diagram of the internal structure of Figure 3;
  • Fig. 5 is an antenna S parameter curve diagram of the simulation experiment of Fig. 3;
  • Fig. 6 is the current distribution at resonance point a in Fig. 5;
  • Fig. 7 is the current distribution at resonance point b in Fig. 5;
  • FIG. 8 is an exploded view of the second structure of the antenna device provided in Embodiment 1 of the present application.
  • FIG. 9 is a schematic diagram of the internal structure of the second structure of the antenna device provided in Embodiment 1 of the present application.
  • FIG. 10 is a graph of the S parameter of the array in the simulation experiment of FIG. 8;
  • Fig. 11 is a graph of the array gain in the simulation experiment of Fig. 8.
  • FIG. 13 is a schematic diagram of the second structure of the antenna device provided in the second embodiment of the present application.
  • FIG. 14 is a graph of the S parameter of the array in the simulation experiment of FIG. 13;
  • FIG. 15 is a graph of the array gain in the simulation experiment of FIG. 13;
  • FIG. 16 is a schematic diagram of the first structure of a mobile phone provided in Embodiment 3 of the present application.
  • FIG. 17 is a schematic diagram of the second structure of the mobile phone provided in the third embodiment of the present application.
  • 100-antenna device 200-mobile phone
  • 5G is a next-generation mobile communication technology with excellent characteristics such as high speed and low latency.
  • the 5G spectrum is divided into Sub 6G and millimeter wave frequency bands.
  • Sub 6G will be the main focus, and the second stage will be millimeters.
  • the wave frequency band is the main one.
  • a large number of studies have shown that the millimeter wave frequency band will become a key technology for increasing the data transmission rate in the future due to its abundant spectrum resources.
  • millimeter wave antenna devices will be mainly used in mobile phones, tablet computers, routers and other electronic devices to transmit and receive communication signals to increase the signal transmission rate.
  • Fig. 1 is a schematic diagram of the structure of a conventional antenna device.
  • the conventional millimeter wave band antenna device 100 includes a reference floor 3, a first antenna radiator 1 and a second antenna radiator 2, and a first feeder 4 and a second feeder 5 arranged oppositely.
  • the second antenna radiator 2 is located between the reference floor 3 and the first antenna radiator 1, the first feeder 4 and the second feeder
  • One end of 5 is signal-connected to the second antenna radiator 2, and the other end passes through the reference floor 3 and is connected to the signal transmission source.
  • the first feeder 4 and the second feeder 5 carry out signals from the signal transmission source respectively. Horizontal polarization and vertical polarization.
  • the signal transmitting source transmits the signal to the second antenna radiator 2 through the first feeder 5 and the second feeder 6 in a current manner, and the second antenna radiator 2 transmits the current to the second antenna radiator 2 through coupling and feeding.
  • the first antenna radiator 1 and the second antenna radiator 2 respectively emit electromagnetic waves of different frequency bands, thereby realizing signal transmission.
  • the antenna device 100 has a larger quality factor, resulting in larger electromagnetic waves generated by the first antenna radiator 1
  • the degree of storage is stored between the first antenna radiator 1 and the reference floor 3, which cannot effectively radiate electromagnetic waves to the signal receiving source. Therefore, it is necessary to increase the vertical distance between the first antenna radiator 1 and the reference floor 3 That is, the height H of the millimeter wave antenna device increases the frequency band covered by the antenna device 100, that is, the bandwidth.
  • the vertical distance between the first antenna radiator 1 and the reference floor 3 is greater than 1mm.
  • the antenna device 100 needs to increase the antenna while achieving a certain bandwidth.
  • the vertical distance between the first antenna radiator 1 of the device 100 and the reference floor 3 is to increase the height H of the antenna device 100, which increases the space occupied by the antenna device 100 in the electronic equipment.
  • the embodiments of the present application provide an electronic device and an antenna device.
  • the antenna device includes a metal body with a cavity, and at least one antenna radiator is provided in the cavity of the metal body, and the antenna radiator is fed through The wire is connected to the signal transmitter outside the metal body to feed the antenna radiator.
  • the antenna radiator couples the current on the inner surface of the cavity to excite the TM 102 mode of the cavity, so that the antenna radiator is The electric current and the TM 102 mode of the cavity produce electromagnetic waves with two resonance points and radiate to the outside of the metal body through the gap on the metal body to realize signal transmission.
  • the metal body of the embodiment of the present application has a cavity structure, and at the same time, a gap is opened on the upper surface of the cavity.
  • This structure can effectively reduce the quality factor of the antenna. Therefore, the cavity of the metal body
  • the generated electromagnetic wave energy can be radiated to a greater extent, thereby increasing the radiation bandwidth of the antenna device.
  • the embodiment of the present application can reduce the size of the metal body while ensuring a certain radiation bandwidth.
  • the distance between the side with the slot and the side away from the slot that is, the height dimension of the antenna device, saves the space occupied by the antenna device in the electronic equipment.
  • the structure of the antenna device of the embodiment of the present application will be described in detail in several embodiments below.
  • FIG. 2 is a schematic diagram of the first structure of the antenna device provided by Embodiment 1 of the present application
  • FIG. 3 is an exploded diagram of FIG. 3
  • FIG. 4 is a schematic diagram of the internal structure of FIG. 3.
  • an embodiment of the present application provides an antenna device 100, which includes a metal body 10, a signal emission source (not shown in the figure), at least one antenna radiator 20 and at least one feeder 30. Wherein, a hollow cavity 11 is formed in the metal body 10, each antenna radiator 20 is suspended in the cavity 11, and the signal emission source is located outside the metal body 10.
  • the antenna radiator 20 includes a first surface 21 and a second surface 22 opposite to the first surface 21.
  • the signal emission source feeds the second surface 22 of the antenna radiator 20 through the feeder line 30. So that the current with sound and video signals in the signal transmission source is transmitted to the antenna radiator 20 through the feeder 30, and a stable current is generated on the antenna radiator 20.
  • a plurality of slits 121 are provided on the side of the metal body 10 opposite to the first surface 21, so that electromagnetic waves inside the metal body 10 are sent to the outside of the metal body 10 through the slits 121, so as to realize the transmission of communication signals.
  • the electromagnetic wave radiated from the gap 121 of the metal body 10 is formed by the current on the antenna radiator 20 inside the metal body 10 and the current on the inner wall of the metal body 10, thereby ensuring the antenna body to radiate The bandwidth of the electromagnetic wave.
  • the multiple slits 121 of the embodiment of the present application when the multiple slits 121 of the embodiment of the present application are specifically arranged, they may be arranged at intervals along the first direction of the top wall 12 of the metal body 10, and each slit 121 extends along the second direction of the top wall 12 .
  • the first direction and the second direction are any directions on the top wall 12 of the metal body 10 that are not parallel to each other.
  • the first direction may be the direction parallel to the long side of the rectangle, namely the x direction
  • the second direction may be the direction parallel to the short side of the rectangle, that is y.
  • the direction of course, in some examples, the first direction may have a certain angle with the long side of the rectangle, and similarly, the second direction may have a certain angle with the short side of the rectangle.
  • a plurality of slits 121 may be provided on the top wall 12 of the metal body 10 at intervals along the first direction and the second direction.
  • a plurality of slits 121 may be provided at intervals along the x direction, and each slit 121 in this direction extends along the y direction, and at the same time, a plurality of slits 121 are also provided at intervals along the y direction, and each slit 121 in this direction It extends along the uniform x direction, so that a plurality of slits 121 cross and are vertically arranged on the top wall 12 of the metal body 10.
  • the first direction and the second direction are the x direction and the y direction, respectively, that is, the first direction and the second direction are perpendicular to each other.
  • a plurality of slits 121 are provided at intervals in the first direction and the second direction of the top wall 12 of the metal body 10, and the first direction and the second direction are perpendicular to each other, which not only guarantees the cavity of the metal body 10
  • the electromagnetic wave in 11 can be radiated to the external environment to a greater extent, reducing energy loss, ensuring the electromagnetic wave radiation bandwidth of the antenna device 100, and the arrangement of the gap 121 makes the processing of the metal body 10 more convenient, thereby improving The manufacturing efficiency of the antenna device 100.
  • the included angle between the first direction and the second direction may be 30°, 60°, 120°, and other suitable angle values other than 90°.
  • the interval d between two adjacent slits 121 may be set to be between 0.1 mm and 2 mm. In order to ensure that the distance between the two resonance points of the electromagnetic waves radiated from the multiple slots 121 is within a proper range, and then to ensure that the S11 of the frequency band between the two resonance points is less than 10 dB. In some examples, the interval d between two adjacent slits 121 can be set to suitable values such as 0.1 mm, 1 mm, 1.5 mm, and 2 mm.
  • the width f of each slit 121 may be set to be less than or equal to 15 ⁇ m.
  • the width f of each slit 121 may be 13 ⁇ m, or the width f of each slit 121 may be 10 ⁇ m.
  • the gap 121 is invisible to the naked eye.
  • the signal transmission performance of the antenna device 100 is ensured, and on the other hand, the integrity of the metal body 10 can be maintained, and the appearance integration effect of the antenna device 100 can be improved.
  • the distance between the reference floor and the side of the metal body 10 with the gap 121 is taken as the height H of the antenna device 100 in the z direction.
  • the metal body 10 of the embodiment of the present application has a cavity structure, and a gap 121 is opened on the upper surface of the cavity 11.
  • This structure can effectively reduce the quality factor of the antenna device 100. Therefore, the metal
  • the electromagnetic wave energy generated by the cavity 11 of the main body 10 can be radiated to a greater extent, reducing the return loss of the radiated electromagnetic wave, so that the radiated electromagnetic wave can cover more frequencies, thereby increasing the antenna device 100 Radiation bandwidth, in other words, compared with the prior art, the embodiment of the present application can reduce the distance between the side of the metal body 10 with the slit 121 and the side away from the slit 121 on the basis of ensuring a certain radiation bandwidth.
  • the height H of the antenna device 100 saves the space occupied by the antenna device 100 in the electronic equipment.
  • Fig. 5 is an antenna S parameter curve diagram of the simulation experiment of Fig. 3. Referring to the characterization of the solid line in FIG. 5, it can be seen that in the simulation experiment of the antenna device shown in FIG. ⁇ 30GHz, can cover N257 frequency band and N258 frequency band at the same time. However, the antenna device 100 in the prior art can cover the N257 frequency band and the N258 frequency band as long as the height H of the antenna device 100 is approximately 2 mm. It can be seen that, while ensuring coverage of the N257 frequency band and the N258 frequency band, the embodiment of the present application reduces the height dimension of the antenna device 100, thereby saving the occupied space in the electronic device.
  • the antenna device 100 has two resonance points in the radiation frequency band, resonance point a and resonance point b, where resonance point a is the specific distribution of the current on the antenna radiator 20
  • the resonance point b is the resonance point generated by the current in the cavity 11 of the metal body 10 in the TM 102 mode.
  • Fig. 6 is the current distribution at the resonance point a in Fig. 5.
  • the frequency of the resonance point a can be adjusted by changing the horizontal size of the antenna radiator 20, that is, the area of the first surface and the second surface of the antenna radiator 20.
  • Fig. 7 is the current distribution at the resonance point b in Fig. 5.
  • the current on the reference floor has two obvious current zeros at the top (ie, area B) and bottom (ie, area C), and at the same time on the left and right sides of the antenna radiator 20, that is, the D area and the E area.
  • the current distribution mode is the TM 102 mode
  • the TM 102 mode generates the resonance point b corresponding to the cavity 11 of the metal body 10.
  • the arrow pointed to by c in Figure 7 is the direction of current flow.
  • the frequency of the resonance point b is about 29.5 GHz
  • the return loss S11 is less than -15 dB.
  • the frequency of the resonance point b can be adjusted by changing the size of the cavity 11 of the metal body 10. Specifically, the larger the cavity 11 of the metal body 10, the lower the frequency of the resonance point b, and the smaller the cavity 11 of the metal body 10, the greater the frequency of the resonance point b.
  • the cavity 11 of the metal body 10 can be controlled within an appropriate range to prevent the cavity 11 of the metal body 10 from being too small, causing resonance The frequency of the point b is too high, which causes the return loss of the electromagnetic wave between the two resonance points to be too high to effectively realize signal transmission.
  • the metal body 10 of the embodiment of the present application When the metal body 10 of the embodiment of the present application is specifically installed, it may be a spherical structure with a cavity 11 inside.
  • the slot 121 for radiating electromagnetic waves in the cavity 11 to the outside is opened on the surface of the spherical structure opposite to the first surface of the antenna radiator 20, and the reference floor is the surface of the spherical structure opposite to the second surface of the antenna radiator 20.
  • the metal body 10 may also include a top wall 12 and a bottom wall 13 arranged in parallel and opposite to each other, and a side wall 14 located between the top wall 12 and the bottom wall 13. 12.
  • the bottom wall 13 and the side wall 14 enclose the cavity 11 of the metal body 10, the slot 121 is opened on the top wall 12, and the bottom wall 13 serves as the reference floor of the antenna device 100.
  • the top wall 12 and the bottom wall 13 can be two parallel planar structures, or can be parallel curved structures.
  • the top wall 12 and the bottom wall 13 are both arc-shaped walls, and the two arc-shaped walls The interval is equal everywhere.
  • the inner contour size of the cavity 11 surrounded by the side wall 14 located between the top wall 12 and the bottom wall 13 is equal or unequal everywhere in the height direction from the top wall 12 to the bottom wall 13.
  • the embodiment of the present application specifically takes the top wall 12 and the bottom wall 13 as a planar structure, and at the same time, the inner contour size of the cavity 11 of the metal body 10 in the height direction is equal everywhere as an example for description.
  • the top wall 12 and the bottom wall 13 of the metal body 10 can be any shape of a square, a rectangle, a circle, or a triangle.
  • the top wall 12 and the bottom wall 13 of the metal body 10 may also have other shapes, which are not limited in the embodiment of the present application.
  • the top wall 12 and the bottom wall 13 of the metal main body 10 are arranged in parallel to ensure the distance between the top wall 12 and the bottom wall 13 of the metal main body 10 with a gap 121, that is, the thickness of the antenna device 100,
  • the volume of the cavity 11 enclosed by the top wall 12, the bottom wall 13 and the side wall 14 is increased, thereby reducing the resonance point frequency generated by the TM 102 mode of the cavity 11, so that the electromagnetic waves radiated by the antenna device 100 are in the entire frequency band.
  • the return loss can be reduced.
  • the cross-sectional shape of the antenna radiator 20 of the embodiment of the present application may include any one of rectangle, square, and circle, so as to increase the surface area of the antenna radiator 20, thereby reducing the resonance point generated by the antenna radiator 20
  • the frequency causes the antenna device 100 to generate a resonance point at low frequencies.
  • the following specifically takes a rectangle as an example for description.
  • the first end of the feeder line 30 is electrically connected to the signal transmission source, and the second end of the feeder line 30 passes through the bottom wall 13 of the metal body 10 and is connected to the second surface of the antenna radiator 20.
  • Electrical connection that is, the second end of the feeder line 30 is in direct contact with the second surface of the antenna radiator 20, so that the current on the signal transmission source is directly transmitted to the feed point of the antenna radiator 20 through the feeder line 30, thereby It is ensured that a stable current is generated on the antenna radiator 20.
  • the second end of the feed line 30 passes through the bottom wall 13 of the metal body 10 and is coupled to the second surface of the antenna radiator 20 (not shown in the figure), that is, the second end of the feed line 30 is connected to the second surface of the antenna radiator 20.
  • the feeding point refers to the lead-in point for feeding the current on the feeding line 30 into the antenna radiator 20.
  • Some signal receiving sources can only receive horizontally polarized waves, and some signal receiving sources can only receive vertically polarized waves. Of course, some signal receiving sources are for horizontally polarized waves. Both vertical and vertically polarized waves can be received.
  • the antenna radiator 20 of the embodiment of the present application may be connected to two feeders 30 correspondingly, as shown in FIG. 4, for the convenience of description, the two feeders 30 are respectively the first The feeder line 31 and the second feeder line 32, that is, the antenna radiator 20 is correspondingly connected to the first feeder line 31 and the second feeder line 32, the second end of one of the first feeder line 31 and the second feeder line 32 Connected to the horizontal axis l 1 of the antenna radiator 20, the second end of the other of the first feeder line 31 and the second feeder line 32 is connected to the vertical axis l 2 of the antenna radiator 20, so that the signal emission source emits
  • the current can be horizontally polarized and vertically polarized through the first feeder line 31 and the second feeder line 32, so that the antenna radiator 20 and the cavity 11 of the excited metal body 10 jointly radiate horizontally polarized waves and
  • the vertically polarized wave further ensures that different types of signal receiving sources can receive the electromagnetic wave signal sent by the antenna device 100 to
  • the feeder line 30 connected to the horizontal axis l 1 of the antenna radiator 20 realizes the horizontal polarization of current
  • the feed line 30 connected to the vertical axis l 2 of the antenna radiator 20 realizes the vertical polarization of current.
  • the second end of the first feeder line 31 is connected to the horizontal axis 11 of the antenna radiator 20, so that the first feeder line 31 can level the current fed by the first feeder line 31.
  • the second end of the first feeder line 32 is connected to the vertical axis of the antenna radiator 20 l of 2, so that the current of the second feeder 32 feeding the second feed line 32 is vertically polarized.
  • the antenna radiator 20 when the antenna radiator 20 is correspondingly connected with two feed lines 30, there are two feed points corresponding to the antenna radiator 20, as shown in FIG. 3, where the second end of the first feed line 31 The point connected to the antenna radiator 20 is the first feeding point a1, and the point at which the second end of the second feeding line 32 is connected to the antenna radiator 20 is the second feeding point a2.
  • the currents on the two feed lines 32 respectively feed the currents into the antenna radiator 20 through the first feed point a1 and the second feed power a2.
  • the dashed line in Figure 5 is the isolation between the first feeding point a1 and the second feeding a2 in the electromagnetic wave radiation frequency band.
  • the isolation is ⁇ -10dB, which can ensure electromagnetic waves radiated to the outside of the metal body 10.
  • the covered frequency band meets the electromagnetic wave radiation requirements of the antenna device 100.
  • the embodiment of the present application may wrap an oxide layer (not shown in the figure) on the outer surface of the metal body 10 to prevent the surface of the metal body 10 from continuously reacting with oxygen in the air. It reduces its own electrical conductivity, so as to ensure the stability of the cavity 11TM 102 mode of the metal body 10.
  • the oxide layer may be an oxide film such as aluminum oxide or iron oxide.
  • the oxide layer effectively prevents the outer surface of the metal body 10 from oxidizing with air and rusting, thereby maintaining the aesthetic appearance of the metal body 10 and avoiding reducing the gloss of the outer surface of the metal body 10.
  • the oxide layer is usually a thin film structure, it can cover the area where the gap 121 is provided on the top wall 12. In this way, during the specific operation of the antenna device 100, the electromagnetic waves inside the metal body 10 sequentially pass through the slit 121 and the oxide layer is radiated to the outside of the antenna device 100 to achieve signal transmission.
  • the antenna device 100 of the embodiment of the present application may further include an insulating medium (not shown in the figure), and the insulating medium is filled in the inner cavity of the metal body 10 so as to realize the alignment between the antenna radiator 20 and the inner surface of the metal body 10
  • the effective isolation ensures that the antenna radiator 20 of the unit antenna and the corresponding cavity 11TM 102 mode jointly radiate electromagnetic waves with two independent resonance points, while ensuring the coverage bandwidth and radiation performance of the antenna device 100.
  • the insulating medium may include, but is not limited to, materials such as polyvinyl chloride, styrene butadiene rubber, and polyamide.
  • the inner wall of the metal body 10 and the antenna radiator 20 are isolated by the bonding medium, it is possible to reduce the overall size of the metal body 10 while ensuring that there is no contact between the inner wall of the metal body 10 and the antenna radiator 20.
  • the space occupied by the antenna device 100 in electronic equipment such as the mobile phone 200 is saved.
  • FIG. 8 is an exploded view of the second structure of the antenna device provided in Embodiment 1 of the present application
  • FIG. 9 is a schematic diagram of the internal structure of the second structure of the antenna device provided in Embodiment 1 of the present application.
  • a plurality of antenna radiators 20 may be arranged in the cavity 11 of the metal body 10 at intervals, and the plurality of antenna radiators 20 are arranged in an array in the cavity 11.
  • two antenna radiators 20 may be arranged in the cavity 11 of the metal body 10, and the two antenna radiators 20 are distributed in a 1*2 array or a 2*1 array.
  • the 1*2 array distribution specifically refers to that one antenna radiator 20 is arranged along the x direction of the metal body 10, and two antenna radiators 20 are arranged along the y direction of the metal body 10.
  • the 2*1 array distribution specifically means that two antenna radiators 20 are arranged at intervals along the x direction of the metal body 10 and one antenna radiator 20 is arranged along the y direction of the metal body 10.
  • a plurality of antenna radiators 20 are arranged at intervals in the cavity 11 of the metal body 10, so that the antenna device 100 can be adjusted as an array antenna.
  • the unit antenna of the array antenna is formed by one of the antenna radiators 20 and the cavity 11TM 102 pattern excited by the antenna radiator 20. Since each unit antenna can radiate a frequency band with a certain bandwidth, the antenna gain of the antenna device 100 is increased through the superposition of multiple unit antennas.
  • the separation distance between the adjacent antenna radiators 20 can be tightened, while ensuring the performance of each unit antenna, while reducing the entire antenna
  • the size of the device 100 also solves the problem of grating lobes caused by the excessively large distance between two adjacent antenna radiators 20.
  • the interval between two adjacent antenna radiators 20 is set within the above range, so as to ensure that the grating lobe problem will not occur, and at the same time, the two adjacent antenna radiators 20 are improved.
  • the isolation between the feeding points ensures that the electromagnetic waves generated by the current on each antenna radiator 20 can be effectively radiated to the external environment through the gap 121 of the metal body 10, without causing one of the antenna radiators 20 to be radiated to the external environment.
  • the generated electromagnetic waves are fed back into the signal emission source through the feeding point of the adjacent antenna radiator 20, thereby reducing the return loss of the antenna device 100 and increasing the coverage bandwidth of the antenna device 100.
  • the second ends of the first feeding line 31 and the second feeding line 32 on each antenna radiator 20, that is, the first feeding point a1 and the second feeding point a2 are close to two adjacent antennas.
  • the symmetry line of the radiator 20 is set so that two adjacent antenna radiators 20 can simultaneously excite the cavity 11 at the position of the symmetry line of the two adjacent antenna radiators 20 to generate a zero electric field, ensuring that each antenna radiator 20 can effectively excite the TM 102 mode of the cavity 11, thereby exciting the electromagnetic wave corresponding to the TM 102 mode, while ensuring that the TM 102 mode generates a stable resonance point.
  • the center of the four antenna radiators 20 is x
  • the line of symmetry between two adjacent antenna radiators 20 in the direction is denoted as g1
  • the line of symmetry between two adjacent antenna radiators 20 in the y-direction among the four antenna radiators 20 is denoted as g2.
  • the two feed points on the two pairs of antenna radiators 20 located on both sides of the symmetry line g2 are also set close to the symmetry line g2, so that the two pairs of antenna radiators 20 on both sides of the symmetry line g2 simultaneously excite the position of g2 A null field is generated to ensure that each antenna radiator 20 can effectively excite the TM 102 mode of the cavity 11, thereby exciting the TM 102 mode to generate a stable resonance point.
  • the isolation of each feeding point on all two adjacent antenna radiators 20 between the frequency bands of 24 GHz and 30 GHz is less than -10 dB, which can meet the electromagnetic wave radiation requirements of the antenna device 100.
  • the antenna gain of the antenna device 100 with this structure in the frequency band of 24 GHz to 30 GHz is> 11 dB, which ensures the radiation effect of electromagnetic waves.
  • FIG. 12 is a schematic diagram of the first structure of the antenna device provided in the second embodiment of the present application.
  • the difference from the first embodiment is that the first end of the feeder 30 connected to the antenna radiator 20 of this embodiment passes through the side wall 14 of the metal body 10 and is connected to the signal emitting source.
  • the first ends of the first feeder line 31 and the second feeder line 32 connected to the antenna radiator 20 both pass through the side wall 14 of the metal body 10 and are connected to the signal transmission source.
  • the current is transmitted to the antenna radiator 20, so that the antenna radiator 20 and the TM 102 mode of the cavity 11 jointly generate electromagnetic waves with a large broadband, while reducing the size of the feeder 30 in the direction perpendicular to the antenna radiator 20 Therefore, the thickness of the antenna device 100 is effectively reduced.
  • the second ends of the first feeder line 31 and the second feeder line 32 both extend from the side wall 14 of the metal body 10 to the edge of the antenna radiator 20 adjacent to the side wall 14 to reduce The extension length of the first feeder line 31 and the second feeder line 32 in the metal body 10 is reduced, so as to prevent the first feeder line 31 and the second feeder line 32 from disturbing the electric field in the metal cavity 11 and ensure the cavity of the metal body 10 11TM 102 mode and the stability of the electromagnetic wave generated by the antenna radiator 20.
  • FIG. 13 is a schematic diagram of the second structure of the antenna device provided in the second embodiment of the present application. Similar to the first embodiment of the present application, there may be one antenna radiator 20 in the second embodiment of the present application, as shown in FIG. 12. Of course, the antenna radiator 20 can also be provided with multiple ones, as shown in FIG. 13. When a plurality of antenna radiators 20 distributed in an array are arranged in the cavity 11 of the metal body 10, the second ends of the first feeder 31 and the second feeder 32 on each antenna radiator 20 are separated from the metal body 10. The side wall 14 extends to the edge of the antenna radiator 20 adjacent to the side wall 14.
  • One edge of the two antenna radiators 20 on the left side of the line of symmetry g1 is adjacent to the left side wall 14 of the metal body 10, and the second end of one of the feed lines 30 on the two antenna radiators 20 is connected to the antenna radiator 20 is close to the edge of the left side wall 14, the first end of one of the feed lines 30 on the two antenna radiators 20 passes through the left side wall 14 of the metal body 10 and is connected to the signal emitting source.
  • the other edge of the antenna radiator 20 on the left side of the line of symmetry g2 is adjacent to the front side wall 14 of the metal body 10, and the other feeder 30 on the antenna radiator 20
  • the second end of the antenna radiator 20 is connected to the edge of the front side wall 14, and the first end of the other feeder 30 on the antenna radiator 20 passes through the front side wall 14 of the metal body 10 and transmits external signals. Source connection.
  • the other edge of the antenna radiator 20 on the right side of the line of symmetry g2 is adjacent to the rear side wall 14 of the metal body 10, and the second end of the other feeder 30 on the antenna radiator 20 is connected On the edge of the antenna radiator 20 close to the rear side wall 14, the first end of another feed line 30 on the antenna radiator 20 passes through the rear side wall 14 of the metal body 10 to be connected to an external signal transmission source.
  • one edge of the two antenna radiators 20 located on the right side of the line of symmetry g1 is adjacent to the right side wall 14 of the metal body 10, and the second end of one of the feed lines 30 on the two antenna radiators 20 is connected to
  • the antenna radiator 20 is close to the edge of the right side wall 14, and the first end of one of the feed lines 30 on the two antenna radiators 20 passes through the right side wall 14 of the metal body 10 and is connected to the signal emission source.
  • the other edge of the antenna radiator 20 on the left side of the line of symmetry g2 is adjacent to the front side wall 14 of the metal body 10, and the other feeder 30 on the antenna radiator 20
  • the second end of the antenna radiator 20 is connected to the edge of the front side wall 14, and the first end of the other feeder 30 on the antenna radiator 20 passes through the front side wall 14 of the metal body 10 and transmits external signals. Source connection.
  • the other edge of the antenna radiator 20 on the right side of the line of symmetry g2 is adjacent to the rear side wall 14 of the metal body 10, and the second end of the other feeder 30 on the antenna radiator 20 is connected On the edge of the antenna radiator 20 close to the rear side wall 14, the first end of another feed line 30 on the antenna radiator 20 passes through the rear side wall 14 of the metal body 10 to be connected to an external signal transmission source.
  • the antenna device 100 of the embodiment of the present application further includes at least one metal post 40 which is vertically arranged on the top wall 12 and the bottom of the metal body 10. Between the walls 13 and the metal column 40 is located on the symmetry line of the two adjacent antenna radiators 20, so that the two adjacent antenna radiators 20 can simultaneously excite the two adjacent antenna radiators in the cavity 11 The position of the symmetry line 20 generates a zero electric field, ensuring that each antenna radiator 20 can effectively excite the TM 102 mode of the cavity 11, thereby exciting the resonance point corresponding to the TM 102 mode.
  • one or more metal pillars 40 can be arranged on the line of symmetry g1, so that the two pairs of antenna radiators 20 on both sides of the line of symmetry g1 simultaneously excite the position of g1 to generate a zero point field.
  • one or more metal pillars 40 distributed at intervals are also arranged on the symmetry line g2, so that the two pairs of antenna radiators 20 on both sides of the symmetry line g2 simultaneously excite the position of g2 to generate a zero point field, thereby ensuring that each antenna The radiator 20 can effectively excite the TM 102 mode of the cavity 11 so as to excite the TM 102 mode to generate a stable resonance point.
  • a plurality of metal posts 40 are arranged at intervals on g1 and g2, so as to better maintain the TM 102 of the cavity 11 excited by each antenna radiator 20. Mode, so as to ensure that the electromagnetic wave radiated by each unit antenna has two resonance points with good transmission performance.
  • the number of metal pillars 40 may be one, and the metal pillars 40 are arranged in The center positions of the four antenna radiators 20 are at the intersection of g1 and g2. In this way, it is ensured that the four antenna radiators 20 can respectively excite their corresponding TM 102 modes to ensure the radiation bandwidth and signal transmission performance of the entire antenna device 100 At the same time, the number of metal posts 40 is reduced, thereby improving the assembly efficiency of the antenna device 100.
  • the metal post 40 of the embodiment of the present application When the metal post 40 of the embodiment of the present application is specifically installed, its two ends can be connected to the inner surfaces of the top wall 12 and the bottom wall 13 respectively, so as to improve the stability of the metal post 40 inside the metal main body 10, and at the same time improve the resistance to the cavity. 11's TM 102 mode maintenance effect.
  • the two ends of the metal column 40 can be welded to the top wall 12 and the bottom wall 13 of the metal body 10 respectively, or can be bonded to the top wall 12 and the bottom wall 13 of the metal body 10.
  • the embodiment of the present application specifically does not limit the connection manner between the metal column 40 and the top wall 12 and the bottom wall 13 of the metal main body 10.
  • Fig. 14 is a graph of the S parameter of the array in the simulation experiment of Fig. 13;
  • Fig. 15 is a graph of the gain of the array in the simulation experiment of Fig. 13. It can be seen from the characterization of the solid line in FIG. 14 that the frequency band of the electromagnetic wave with S11 ⁇ -8dB of the antenna device 100 shown in FIG. 13 is approximately 24 GHz to 30 GHz, which can cover both the N257 frequency band and the N258 frequency band.
  • the multiple dashed lines in FIG. 14 represent the isolation of each feeding point on two adjacent antenna radiators 20 in the electromagnetic wave radiation frequency band, including one of the first feeding points a1 on two adjacent antenna radiators 20 The isolation between the two adjacent antenna radiators 20, the isolation between the first feeding point a1 on one of the two adjacent antenna radiators 20 and the second feeding point a2 on the other, the isolation between the two adjacent antenna radiators 20 The isolation between the second feeding point a2 on one of them and the first feeding point a1 on the other and the isolation between the second feeding points a2 on two adjacent antenna radiators 20 .
  • the isolation of each feeding point on all two adjacent antenna radiators 20 between the frequency bands of 24 GHz and 30 GHz is less than -10 dB, which can meet the electromagnetic wave radiation requirements of the antenna device 100.
  • the antenna gain of the antenna device 100 shown in FIG. 13 in the frequency band between 24 GHz and 30 GHz is> 11 dB, which ensures the radiation effect of electromagnetic waves.
  • FIG. 16 is a schematic structural diagram of a mobile phone 200 provided in Embodiment 3 of the present application.
  • the electronic device provided in an embodiment of the present application includes a display screen (not shown in the figure), a back cover 210 and the antenna device 100 described in any of the foregoing embodiments.
  • the antenna device 100 may be arranged inside the back cover 210, or may be arranged in the installation cavity between the back cover 210 and the display screen.
  • the dotted line in FIG. 16 is the projection area of the antenna device 100 on the back cover 210.
  • One or more antenna devices 100 may be provided on electronic devices such as mobile phones to meet different signal transmission requirements.
  • the above-mentioned antenna device 100 is provided in the electronic device, while ensuring the radiation bandwidth, the thickness of the antenna device 100 is reduced, thereby saving the space occupied by the antenna device 100 in the electronic device.
  • the installation provides effective space.
  • FIG. 17 is a schematic diagram of the second structure of the mobile phone provided in the third embodiment of the present application.
  • the back cover 210 of the electronic device such as the mobile phone 200 is a metal back cover.
  • the metal back cover can be configured as the metal body 10 of the antenna device 100, and the antenna radiator 20 is arranged on the metal In the cavity 11 opened in the back cover, in this way, while ensuring the electromagnetic radiation function of the antenna device 100, the structure of the electronic device itself is rationally utilized, thereby effectively saving the space occupied by the antenna device 100 in the electronic device and improving Improve the integration of electronic equipment.
  • the side of the metal body 10 with the slit 121 can be away from the display screen to avoid electromagnetic waves radiating from the slit 121 and cause interference to the video display of the display screen, and at the same time, to ensure that more electromagnetic wave energy is sent to the signal receiving end. Realize the effective transmission of sound, video and other signals.
  • the electronic devices may include, but are not limited to, mobile phones, tablet computers, notebook computers, ultra-mobile personal computers (UMPC), handheld computers, walkie-talkies, netbooks, POS machines, personal digital assistants (PDAs for short), wearable devices, virtual reality devices, routers and other mobile or fixed terminals with antenna structures.
  • UMPC ultra-mobile personal computers
  • PDA personal digital assistants
  • connection should be understood in a broad sense, for example, it may be a fixed connection or Indirect connection through an intermediate medium can be the internal communication between two elements or the interaction between two elements.
  • connection should be understood in a broad sense, for example, it may be a fixed connection or Indirect connection through an intermediate medium can be the internal communication between two elements or the interaction between two elements.

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Abstract

本申请实施例提供一种电子设备及天线装置，天线装置包括金属主体、信号发射源、至少一个天线辐射体以及至少一个馈电线；金属主体内形成有腔体，每个天线辐射体悬空设置在腔体内，信号发射源位于金属主体的外部；天线辐射体包括第一表面以及与第一表面相背的第二表面，信号发射源通过馈电线向天线辐射体的第二表面馈电，金属主体与第一表面相对的一面上开设多条缝隙，以使金属主体内部的电磁波均通过缝隙向金属主体的外部发出。相比于现有技术，本申请实施例的金属主体的腔体产生电磁波能量能够更大程度的辐射出去，从而增大了该天线装置的辐射带宽，因而在保证一定辐射带宽的同时，缩小该天线装置的高度尺寸。

Description

一种电子设备及天线装置
本申请要求于2020年04月22日提交中国专利局、申请号为202010321042.0、申请名称为“一种电子设备及天线装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及终端技术领域，特别涉及一种电子设备及天线装置。
背景技术
手机等电子设备需通过运营商提供的移动通信网络实现通信，其还能够通过无线保真(Wireless Fidelity，WIFI)、蓝牙、红外等多种方式实现智能设备之间的通信连接。对于手机而言，通信信号是通过天线实现收发的。因5G频谱中的毫米波频段具有丰富的频谱资源，且数据传输速率高，在5G发展的第二阶段，手机等电子设备中将主要采用毫米波天线装置进行通信信号的收发，以提高信号传输速率。
相关技术中，毫米波天线装置包括参考地板相对设置的第一天线辐射体和第二天线辐射体以及第一馈电线和第二馈电线。其中，第一天线辐射体与第二天线辐射体之间具有间隔，第二天线辐射体位于参考地板与第一天线辐射体之间，第一馈电线和第二馈电线的一端与第二天线辐射体信号连接，另一端穿过参考地板与信号发射源信号连接，其中，第一馈电线和第二馈电线分别实现对信号电流的水平极化和垂直极化。工作时，信号发射源通过第一馈电线和第二馈电线将信号以电流的方式传输至第二天线辐射体上，第二天线辐射体通过耦合馈电的方式将电流传输至第一天线辐射体上，从而使得第一天线辐射体和第二天线辐射体分别发出不同频段的电磁波，从而实现信号的发送。
然而，上述天线装置的第一天线辐射体与参考地板之间的垂直距离大于1mm时，该毫米波天线装置才能够覆盖N257、N258双频段，这就使得该天线装置在实现一定带宽的同时，必须增大该天线装置的第一天线辐射体与参考地板之间的垂直距离，即增大了该天线装置的高度，这就增大了该天线装置在电子设备中的占用空间。
发明内容
本申请提供了一种电子设备及天线装置，以在能够达到一定带宽的同时，减小了天线装置在高度方向上的尺寸，从而节约该天线装置在电子设备中的占用空间。
本申请实施例提供一种天线装置，包括金属主体、信号发射源、至少一个天线辐射体以及至少一个馈电线；
所述金属主体内形成有腔体，每个所述天线辐射体悬空设置在所述腔体内，所述信号发射源位于所述金属主体的外部；
所述天线辐射体包括第一表面以及与所述第一表面相背的第二表面，所述信号发 射源通过所述馈电线向所述天线辐射体的所述第二表面馈电，所述金属主体与所述第一表面相对的一面上开设多条缝隙，以使所述金属主体内部的电磁波均通过所述缝隙向所述金属主体的外部发出。
本申请实施例通过将天线装置设置为包括具有腔体的金属主体，并在该金属主体的腔体设置至少一个天线辐射体，该天线辐射体通过馈电线与金属主体外部的信号发射源信号连接，以向天线辐射体进行馈电，同时，该天线辐射体上的电流会耦合激励起金属腔体内表面的电流，形成腔体的TM 102模式，天线辐射体上的电流以及腔体的TM 102模式共同产生的具有两个谐振点的电磁波，并透过金属主体上的缝隙辐射至金属主体的外部，实现信号的发送。相比于现有技术，本申请实施例的金属主体因其为为具有腔体的封闭结构，且在腔体的顶壁上开有微缝结构，此结构形成的天线具有较小的品质因素，因此，该金属主体的腔体产生电磁波能量能够更大程度的辐射出去，从而增大了该天线装置的辐射带宽，换句话说，相比于现有技术，本申请实施例能够在保证一定辐射带宽的基础上，缩小金属主体具有缝隙的一侧与背离缝隙的一侧之间的距离即该天线装置的高度尺寸，节约了该天线装置在电子设备中的占用空间。
在一种可能的实现方式中，所述金属主体包括相对且平行设置的顶壁和底壁以及位于所述顶壁与所述底壁之间的侧壁；
所述顶壁、底壁以及侧壁围成所述金属主体的腔体，所述缝隙开设在所述顶壁上。
通过将金属主体的顶壁与底壁平行设置，以在保证金属主体具有缝隙的顶壁与底壁之间的距离即天线装置的厚度的同时，增大了顶壁、底壁以及侧壁围成的腔体的体积，从而降低腔体TM 102模式产生的谐振点频率，使得在所需的工作频段上，减小了天线装置的水平方向上的尺寸。另外，金属主体由相对且平行设置的顶壁和底壁以及位于顶壁与底壁之间的侧壁围成，也降低了该金属主体的制作难度，提高了天线装置的制作效率。
在一种可能的实现方式中，所述馈电线的第一端与所述信号发射源电连接，所述馈电线的第二端从所述金属主体的侧壁或者底壁穿过并与所述天线辐射体的第二表面电连接，或者，所述馈电线的第二端从所述金属主体的侧壁或者底壁穿过并与所述天线辐射体的第二表面耦合。
通过将馈电线的第一端与信号发射源电连接，将馈电线的第二端与天线辐射体的第二表面电连接或者耦合连接，从而将信号发射源产生的具有信号的电流有效地传输至天线辐射体的馈电点上，从而保证天线辐射体上产生稳定的电流。
在一种可能的实现方式中，所述天线辐射体的数量为多个，多个所述天线辐射体在所述腔体内呈阵列分布，且相邻两个所述天线辐射体间隔设置。
通过在金属主体的腔体内设置多个间隔排列的天线辐射体，以增大该天线装置的增益。另外，本申请实施例因取消了相邻两个天线辐射体之间的金属壁，从而拉近了相邻天线辐射体之间的间隔距离，在确保每个单元天线的性能的同时，缩小了整个天线装置的尺寸，同时也解决了相邻两个天线辐射体的间隔过大而导致的栅瓣问题。
在一种可能的实现方式中，每个所述天线辐射体的横截面形状包括长方形、正方形和圆形中的任意一种，以增大该天线辐射体的表面面积，从而降低该天线辐射体产生的谐振点频率，使得该天线装置在低频下产生谐振点。
在一种可能的实现方式中，每个所述天线辐射体对应连接有第一馈电线和第二馈电线，所述第一馈电线与所述第二馈电线中的其中一个的第二端连接在所述天线辐射体的水平轴线，所述第一馈电线与所述第二馈电线中的另一个的第二端连接所述天线辐射体的垂直轴线上。
本申请实施例将每个天线辐射体与信号发射源之间通过第一馈电线与第二馈电线连接，并将第一馈电线与第二馈电线的第二端分别连接在天线辐射体的水平轴线与垂直轴线上，以通过该第一馈电线与第二馈电线实现对信号发射源传输至天线辐射体上的电流的水平极化和垂直极化，使得金属主体的缝隙能够辐射出水平极化波和垂直极化波，从而保证不同类型的信号接收源均能够接收到该天线装置发出的电磁波信号。
在一种可能的实现方式中，所述第一馈电线和所述第二馈电线的第一端从所述金属主体的底壁穿过并与所述信号发射源电连接。
在一种可能的实现方式中，所述第一馈电线和所述第二馈电线的第二端均靠近相邻两个所述天线辐射体的对称线设置，以使相邻两个天线辐射体能够同时激励起腔体内位于相邻两个天线辐射体的对称线的位置产生零电场，确保每个天线辐射体均能够有效的激励起腔体的TM 102模式，从而激发该TM 102模式对应的电磁波，同时保证该TM 102模式产生稳定的谐振点。
在一种可能的实现方式中，所述第一馈电线和所述第二馈电线的的第一端从所述金属主体的侧壁穿过并与所述信号发射源连接，以在确保该第一馈电线与第二馈电线将电流传输至天线辐射体上，使得天线辐射体以及腔体的TM 102模式共同产生具有大宽带的电磁波的同时，缩小了馈电线在垂直于天线辐射体的方向上占用尺寸，从而有效地缩小了该天线装置的厚度。
在一种可能的实现方式中，所述第一馈电线与所述第二馈电线的第二端均连接在所述天线辐射体邻近所述金属主体的侧壁的边缘，以减小第一馈电线和第二馈电线在金属主体内的延伸长度，从而避免第一馈电线和第二馈电线扰乱金属腔体内的电场，保证金属主体的腔体TM 102模式以及天线辐射体产生的电磁波的稳定性。
在一种可能的实现方式中，所述天线装置还包括至少一个金属柱；
所述金属柱竖直设置在所述金属主体的顶壁与所述底壁之间；且所述金属柱位于相邻两个所述天线辐射体的对称线上。
通过在相邻两个天线辐射体的对称线上设置金属柱，以使相邻两个天线辐射体能够同时激励起腔体内位于相邻两个天线辐射体的对称线的位置产生零电场，确保每个天线辐射体均能够有效的激励起腔体的TM 102模式，从而激发该TM 102模式对应的电磁波，同时保证该TM 102模式产生稳定的谐振点。
在一种可能的实现方式中，所述天线辐射体的数量至少为4个，至少4个所述天线辐射体以矩阵方式设置在所述金属主体的腔体内，以使该天线装置形成平面阵列天线，从而在天线辐射体所在的平面实现二维扫描，提高该天线装置的覆盖面积。
在一种可能的实现方式中，所述金属柱的数量为一个，所述金属柱设置在4个所述天线辐射体的中心位置。
本申请实施例通过将一个金属柱设置在4个天线辐射体的中心位置，以使4个天线辐射体激励起的腔体在水平对称线和垂直对称线上均处于零电场，从而保证四个天 线辐射体能够分别激励起自身对应的金属主体的腔体TM 102模式，确保至少四个单元天线各自辐射的电磁波的带宽以及对应的两个谐振点的稳定性。因此，通过上述设置，在实现整个天线装置的辐射带宽以及信号传输性能的同时，减少了金属柱的设置数量，从而提高了天线装置的装配效率。
在一种可能的实现方式中，所述金属柱的数量为多个，多个所述金属柱间隔设置在相邻两个所述天线辐射体的对称线上，以更好的维持每个天线辐射体激励起的腔体的TM 102模式，从而保证每个单元天线所辐射的电磁波均具有两个传输性能佳的谐振点。
在一种可能的实现方式中，所述金属柱的两端分别连接在所述顶壁和所述底壁的内表面，以提高金属柱在金属主体内部的稳固性，同时提高对腔体的TM 102模式的维持效果。
在一种可能的实现方式中，所述金属主体的顶壁沿第一方向和第二方向均间隔设置有多条所述缝隙，且每条缝隙的两端分别延伸至所述顶壁的相对两侧的边缘；
其中，所述第一方向与所述第二方向相互垂直。
本申请实施例通过在金属主体的顶壁上沿两个垂直的方向间隔设置多个缝隙，不仅保证了金属主体的腔体内的电磁波能够更大程度地辐射至外部环境，减小能量的损耗，确保该天线装置的电磁波辐射带宽，而且上述缝隙的设置方式使得该金属主体的加工更加方便，从而提高了天线装置的制作效率。
在一种可能的实现方式中，所述缝隙的宽度小于或者等于15μm，以达到肉眼不可见的程度，既能够保证天线装置的信号传输的性能，也能够保持金属主体的完整性，提高该天线装置的外观一体化效果。
在一种可能的实现方式中，所述天线装置还包括氧化层；
所述氧化层包裹在所述金属主体的外表面，以防止金属主体表面发生氧化而降低其自身的导电性能，从而确保该金属主体的腔体TM 102模式的稳定性。
在一种可能的实现方式中，所述天线装置还包括绝缘介质，所述绝缘介质填充在所述金属主体的内腔中，以实现对每个天线辐射体与金属主体的内表面的有效隔离，确保每个单元天线的天线辐射体以及对应的腔体TM 102模式共同辐射出具有两个独立谐振点的电磁波，同时保证每个单元天线辐射电磁波的覆盖带宽和辐射性能。
本申请实施例还提供一种电子设备，包括显示屏、后盖和如上所述的天线装置。
本申请实施例通过在电子设备中设置上述天线装置，在确保辐射带宽的同时，缩小了天线装置的厚度尺寸，从而节约了该天线装置在电子设备中的占用空间，以为其他元器件的安装提供有效的空间。
在一种可能的实现方式中，所述后盖为金属后盖，所述金属后盖被配置成所述天线装置的金属主体，且所述金属主体上开设缝隙的一面背离所述显示屏。
通过将金属后盖配置为天线装置的金属主体，以在保证天线装置实现电磁辐射的功能的同时，合理利用了电子设备自身的结构，从而有效地节约了天线装置在电子设备内的占用空间，提高了电子设备的集成度。另外，通过将金属主体上开设有缝隙的一面背离显示屏，以避免电磁波从缝隙中辐射出对显示屏的视频显示造成干扰，同时也保证更多的电磁波能量发送至信号接收端，实现声音、视频等信号的有效传输。
附图说明
图1是传统的天线装置的结构示意图；
图2是本申请实施例一提供的天线装置的第一种结构示意图；
图3是图2的爆炸图；
图4是图3的内部结构示意图；
图5是图3的仿真实验的天线S参数曲线图；
图6是图5中谐振点a的电流分布；
图7是图5中谐振点b的电流分布；
图8是本申请实施例一提供的天线装置的第二种结构的爆炸图；
图9是本申请实施例一提供的天线装置的第二种结构的内部结构示意图；
图10是图8的仿真实验中阵列S参数曲线图；
图11是图8的仿真实验中阵列增益曲线图；
图12是本申请实施例二提供的天线装置的第一种结构示意图；
图13是本申请实施例二提供的天线装置的第二种结构示意图；
图14是图13的仿真实验中阵列S参数曲线图；
图15是图13的仿真实验中阵列增益曲线图；
图16是本申请实施例三提供的手机的第一种结构示意图；
图17是本申请实施例三提供的手机的第二种结构示意图。
附图标记说明：
100-天线装置；200-手机；
1-第一天线辐射体；2-第二天线辐射体；3-参考地板；
10-金属主体；20-天线辐射体；40-金属柱；
11-腔体；12-顶壁；13-底壁；14-侧壁；21-第一表面；22-第二表面；4、31-第一馈电线；5、32-第二馈电线；210-后盖；
121-缝隙。
具体实施方式
本申请的实施方式部分使用的术语仅用于对本申请的具体实施例进行解释，而非旨在限定本申请，下面将结合附图对本申请实施例的实施方式进行详细描述。
5G是下一代移动通信技术，具有高速率、低延迟等优良特性，5G频谱分为Sub 6G和毫米波频段，在5G发展的第一阶段主要以Sub 6G为主，而第二阶段将以毫米波频段为主，大量的研究表明，毫米波频段由于其具有丰富的频谱资源，将会成为未来提高数据传输速率的关键技术。在5G发展的第二阶段，在手机、平板电脑、路由器等电子设备中将主要采用毫米波天线装置进行通信信号的收发，以提高信号传输速率。
下文主要以天线装置的发送过程为例进行结构的说明，天线装置的接收过程为发送过程的逆过程。图1是传统的天线装置的结构示意图。参照图1所示，传统的毫米波频段的天线装置100包括参考地板3、相对设置的第一天线辐射体1和第二天线辐射体2以及第一馈电线4和第二馈电线5。其中，第一天线辐射体1与第二天线辐射 体2之间具有间隔，第二天线辐射体2位于参考地板3与第一天线辐射体1之间，第一馈电线4和第二馈电线5的一端与第二天线辐射体2信号连接，另一端穿出参考地板3并与信号发射源信号连接，其中，第一馈电线4和第二馈电线5分别对信号发射源发出的信号进行水平极化和垂直极化。工作时，信号发射源通过第一馈电线5和第二馈电线6将信号以电流的方式传输至第二天线辐射体2上，第二天线辐射体2通过耦合馈电的方式将电流传输至第一天线辐射体1上，从而使得第一天线辐射体1和第二天线辐射体2分别发出不同频段的电磁波，从而实现信号的发送。
然而，上述天线装置100的第一天线辐射体1与参考地板3之间会形成较大的电容，使得天线装置100具有较大的品质因素，从而导致第一天线辐射体1产生的电磁波更大程度的存储在第一天线辐射体1与参考地板3之间，无法将有效地的电磁波辐射至信号接收源，因此，需通过增大第一天线辐射体1与参考地板3之间的垂直距离即该毫米波天线装置的高度H，来提高该天线装置100的覆盖频段即带宽。
为了保证该天线装置100同时覆盖N257、N258双频段，第一天线辐射体1与参考地板3之间的垂直距离大于1mm，例如，该天线装置100在实现一定带宽的同时，需增大该天线装置100的第一天线辐射体1与参考地板3之间的垂直距离，即增大该天线装置100的高度H，这就增大了该天线装置100在电子设备中的占用空间。
为了解决上述问题，本申请实施例提供一种电子设备及天线装置，通过天线装置包括具有腔体的金属主体，并在该金属主体的腔体设置至少一个天线辐射体，该天线辐射体通过馈电线与金属主体外部的信号发射源信号连接，以向天线辐射体进行馈电，同时该天线辐射体会耦合起腔体内表面的电流，从而激励起腔体的TM 102模式，使得天线辐射体上的电流以及腔体的TM 102模式共同产生的具有两个谐振点的电磁波，并透过金属主体上的缝隙辐射至金属主体的外部，实现信号的发送。相比于现有技术中，本申请实施例的金属主体具有腔体结构，同时在腔体的上表面开有缝隙，此结构可以有效的降低天线的品质因数，因此，该金属主体的腔体产生电磁波能量能够更大程度的辐射出去，从而增大了该天线装置的辐射带宽，换句话说，相比于现有技术，本申请实施例能够在保证一定辐射带宽的基础上，缩小金属主体具有缝隙的一侧与背离缝隙的一侧之间的距离，即该天线装置的高度尺寸，节约了该天线装置在电子设备中的占用空间。以下具体以几个实施例对本申请实施例的天线装置的结构进行详细说明。
实施例一
图2是本申请实施例一提供的天线装置的第一种结构示意图，图3是图3的爆炸图，图4是图3的内部结构示意图。
参照图2至图4所示，本申请实施例提供一种天线装置100，包括金属主体10、信号发射源(图中未示出)、至少一个天线辐射体20以及至少一个馈电线30。其中，金属主体10内形成有中空的腔体11，每个天线辐射体20悬空设置在腔体11内，信号发射源位于金属主体10的外部。
具体地，参照图4所示，天线辐射体20包括第一表面21以及与第一表面21相背的第二表面22，信号发射源通过馈电线30向天线辐射体20的第二表面22馈电，以使信号发射源中具有声音、视频等信号的电流通过馈电线30传输至天线辐射体20上， 在天线辐射体20上产生稳定的电流，与此同时，位于天线辐射体20上的电流会在金属腔体11的内表面产生感应电流，将电流馈至金属主体10的内壁上，使得金属主体10整个腔体11也产生一定带宽的电磁波，并且天线辐射体20上的电流能够激励起腔体11的TM 102模式，从而产生一个谐振点，进而使得天线辐射体20以及腔体11的TM 102模式共同辐射出具有两个谐振点的电磁波。需要说明的是，天线辐射体20的第一表面21和第二表面22指的是该天线辐射体20沿z方向上相背的两个表面。
本申请实施例，金属主体10与第一表面21相对的一面上开设多条缝隙121，以使金属主体10内部的电磁波均通过缝隙121向金属主体10的外部发出，从而实现通信信号的发送。
可以理解的是，从金属主体10的缝隙121中辐射出的电磁波由金属主体10内部的天线辐射体20上的电流以及金属主体10的内壁上的电流共同形成的，因此保证了该天线主体辐射出的电磁波的带宽。
参照图3所示，本申请实施例的多条缝隙121在具体设置时，可以沿金属主体10的顶壁12的第一方向间隔设置，且每个缝隙121沿顶壁12的第二方向延伸。可以理解的是，该第一方向和第二方向为金属主体10的顶壁12上的任意互不平行的方向。例如，当金属主体10的顶壁12为长方形结构时，该第一方向可以是平行于长方形的长边的方向即x方向，第二方向可以是平行于长方形短边的短边的方向即y方向，当然，在一些示例中，第一方向可以与长方形的长边具有一定夹角，同样地，第二方向可以与长方形的短边具有一定夹角。
在一些示例中，可以在金属主体10的顶壁12沿第一方向和第二方向均间隔设置多条缝隙121。例如，可沿x方向间隔设置多条缝隙121，且该方向上的每条缝隙121均沿y方向延伸，同时，沿y方向也间隔设置多条缝隙121，且该方向上的每条缝隙121沿均x方向延伸，以使多条缝隙121交叉且垂直设置在金属主体10的顶壁12上。可以理解的是，在该示例中，第一方向和第二方向分别为x方向和y方向，即第一方向和与第二方向相互垂直。
本申请实施例通过在金属主体10的顶壁12的第一方向和第二方向均间隔设置有多条缝隙121，同时第一方向与第二方向互相垂直，不仅保证了金属主体10的腔体11内的电磁波能够更大程度地辐射至外部环境，减小能量的损耗，确保该天线装置100的电磁波辐射带宽，而且上述缝隙121的设置方式使得该金属主体10的加工更加方便，从而提高了天线装置100的制作效率。
应当理解的是，在其他示例中，第一方向和第二方向之间的夹角可以为30°、60°、120°等非90°的合适的角度值。
参照图3所示，在一些示例中，相邻两条缝隙121之间的间隔d可以设置为0.1mm-2mm之间。以保证从多个缝隙121辐射出的电磁波的两个谐振点的间距处于合适的范围内，进而保证两个谐振点之间的频段的S11＜10dB。在一些示例中，相邻两条缝隙121之间的间隔d可以设置为0.1mm、1mm、1.5mm及2mm等合适的数值。
另外，参照图4所示，每个缝隙121的宽度f可设置为小于或者等于15μm，例如，每个缝隙121的宽度f可以为13μm，或者每个缝隙121的宽度f可以为10μm，该些缝隙121肉眼不可见，一方面保证天线装置100的信号传输的性能，另一方面，能够 保持金属主体10的完整性，提高该天线装置100的外观一体化效果。
参照图2所示，本申请实施例具体是以参考地板与金属主体10具有缝隙121的一侧之间的距离作为该天线装置100在z方向上的高度H。
相比于现有技术，本申请实施例的金属主体10具有腔体结构，同时在腔体11的上表面开有缝隙121，此结构可以有效的降低天线装置100的品质因数，因此，该金属主体10的腔体11产生电磁波能量能够更大程度的辐射出去，降低了辐射出的电磁波的回波损耗，从而使得辐射出的电磁波能够覆盖更多的频率，从而增大了该天线装置100的辐射带宽，换句话说，相比于现有技术，本申请实施例能够在保证一定辐射带宽的基础上，缩小金属主体10具有缝隙121的一侧与背离缝隙121的一侧之间的距离即该天线装置100的高度H，节约了该天线装置100在电子设备中的占用空间。
图5是图3的仿真实验的天线S参数曲线图。参照图5中实线的表征可知，图3所示的天线装置的仿真实验中，该天线装置100的高度H为0.4mm或者0.3mm时，该天线装置100辐射的电磁波的辐射频段大约在24GHz～30GHz，能够同时覆盖N257频段和N258频段。而现有技术中的天线装置100，只要当天线装置100的高度H大约在2mm时，才能够覆盖N257频段和N258频段。由此可见，本申请实施例在保证能够覆盖N257频段和N258频段的同时，减小了天线装置100的高度尺寸，从而节约了在电子设备中的占用空间。
其中，从图5的实线可看出，该天线装置100的辐射频段中具有两个谐振点，谐振点a和谐振点b，其中，谐振点a为天线辐射体20上的电流在特定分布下产生的谐振点，谐振点b为金属主体10的腔体11的电流在TM 102模式下产生的谐振点。
图6是图5中谐振点a的电流分布。参照图6所示，当金属主体10的参考地板上的电流同向且未出现电流零点，同时在天线辐射体20的底边即A区域产生局部电流零点，在该电流分布下产生天线辐射体20对应的谐振点a，该谐振点a的频率为25GHz，回波损耗S11＜-25dB。本申请实施例可通过改变天线辐射体20的水平尺寸即天线辐射体20的第一表面和第二表面的面积，来调整谐振点a的频率。具体地，天线辐射体20的第一表面和第二表面的面积越大，谐振点a的频率越低，天线辐射体20的第一表面和第二表面的面积越小，谐振点a的频率越大。因此，可根据实际需要，对天线辐射体20的第一表面和第二表面的尺寸进行调整。其中，图6中c所指的箭头为电流的流向。
图7是图5中谐振点b的电流分布。参照图7所示，参考地板上的电流在顶部(即B区域)和底部(即C区域)出现两个明显的电流零点，同时在天线辐射体20的左右两侧即D区域和E区域也出现两个电流零点，该电流的分布模式为TM 102模式，该TM 102模式产生金属主体10的腔体11所对应的谐振点b。其中图7中c所指的箭头为电流的流向。继续参照图5中的实线所示，该谐振点b的频率约29.5GHz，回波损耗S11＜-15dB。本申请实施例可通过改变金属主体10的腔体11大小，来调整谐振点b的频率。具体地，金属主体10的腔体11越大，谐振点b的频率越低，金属主体10的腔体11越小，谐振点b的频率越大。为了保证两个谐振点之间的电磁波的回波损耗S11＜-10dB，可将金属主体10的腔体11控制在合适的范围内，以防止该金属主体10的腔体11过小，使得谐振点b的频率过高，而导致两个谐振点之间的电磁波的回波损 耗过高而无法有效地实现信号传输。
本申请实施例的金属主体10在具体设置时，可以是内部具有腔体11的球形结构。供腔体11内的电磁波辐射至外部的缝隙121开设在球形结构与天线辐射体20的第一表面相对的一面上，参考地板为球形结构与天线辐射体20的第二表面相对的一面上。
参照图2和图3所示，在一些示例中，金属主体10还可以包括相对且平行设置的顶壁12和底壁13以及位于顶壁12与底壁13之间的侧壁14，顶壁12、底壁13以及侧壁14围成金属主体10的腔体11，缝隙121开设在顶壁12上，底壁13作为天线装置100的参考地板。
其中，顶壁12和底壁13可以为两个平行设置的平面结构，也可以为平行设置的曲面结构，例如，顶壁12和底壁13均为弧形壁，两个弧形壁之间的间隔处处相等。位于顶壁12与底壁13之间的侧壁14围成的腔体11的内轮廓尺寸在自顶壁12至底壁13的高度方向上处处相等或者不等。
本申请实施例具体是以顶壁12和底壁13具为平面结构，同时，金属主体10的腔体11在高度方向上的内轮廓尺寸处处相等为例进行说明。具体设置时，该金属主体10的顶壁12和底壁13可以是正方形、长方形、圆形或者三角形中的任意一种形状。当然，在其他示例中，该金属主体10的顶壁12和底壁13还可以是其他形状，本申请实施例对此不做限制。
本申请实施例通过将金属主体10的顶壁12与底壁13平行设置，以在保证金属主体10具有缝隙121的顶壁12与底壁13之间的距离即天线装置100的厚度的同时，增大了顶壁12、底壁13以及侧壁14围成的腔体11的体积，从而降低腔体11的TM 102模式产生的谐振点频率，使得该天线装置100辐射的电磁波在整个频段上的回波损耗得以降低。
另外，金属主体10由相对且平行设置的顶壁12和底壁13以及位于顶壁12与底壁13之间的侧壁14围成，也降低了该金属主体10的制作难度，提高了天线装置100的制作效率。
本申请实施例的天线辐射体20的横截面形状可以包括长方形、正方形和圆形中的任意一种，以增大该天线辐射体20的表面面积，从而降低该天线辐射体20产生的谐振点频率，使得该天线装置100在低频下产生谐振点。以下具体以长方形为例进行说明。
本申请实施例中，信号发射源(图中未示出)可以是射频模块。实际应用中，该射频模块具体是集成在手机等电子设备的芯片内。该天线装置100在具体装配时，只需将馈电线30的一端从金属主体10的外壁穿出并连接至电子设备的芯片对应的引脚上，便可将芯片上的具有信号的电流稳定地传输至天线辐射体20上。
参照图3所示，具体地，馈电线30的第一端与信号发射源电连接，馈电线30的第二端从金属主体10的底壁13穿过并与天线辐射体20的第二表面电连接，即该馈电线30的第二端与天线辐射体20的第二表面直接接触，以使信号发射源上的电流通过馈电线30直接传输至天线辐射体20的馈电点上，从而保证该天线辐射体20上产生稳定的电流。或者，馈电线30的第二端从金属主体10的底壁13穿过并与天线辐射体20的第二表面者耦合连接(图中未示出)，即该馈电线30的第二端与天线辐射体20 的第二表面之间具有一定间隔，以使信号发射源传输至馈电线30上的电流通过击穿空气以将电流馈至天线辐射体20的馈电点上，从而使得天线辐射体20上产生稳定的电流。
其中，馈电点是指将馈电线30上的电流馈入天线辐射体20中的引入点。
实际应用中存在不同类型的信号接收源，有的信号接收源仅能够接收水平极化波，有的信号接收源仅能够接收垂直极化波，当然，还有的信号接收源对于水平极化波和垂直极化波均能够接收到。
基于此，为了满足不同类型的信号接收源，本申请实施例的天线辐射体20可以对应连接有两个馈电线30，如图4所示，为了方便描述，两个馈电线30分别为第一馈电线31和第二馈电线32，即该天线辐射体20对应连接有第一馈电线31和第二馈电线32，第一馈电线31与第二馈电线32中的其中一个的第二端连接在天线辐射体20的水平轴线l 1，第一馈电线31与第二馈电线32中的另一个的第二端连接天线辐射体20的垂直轴线l 2上，这样，信号发射源发出的电流可分别通过该第一馈电线31与第二馈电线32进行水平极化和垂直极化，从而使得天线辐射体20以及激励起的金属主体10的腔体11共同辐射出水平极化波和垂直极化波，进而保证不同类型的信号接收源均能够接收到该天线装置100发出的电磁波信号，确保信号的正常传输。
其中，连接在天线辐射体20的水平轴线l 1上的馈电线30实现电流的水平极化，相应地，连接在天线辐射体20的垂直轴线l 2上的馈电线30实现电流的垂直极化。例如，参照图3所示，第一馈电线31的第二端连接在天线辐射体20的水平轴线l 1上，以使第一馈电线31对该第一馈电线31馈入的电流进行水平极化，第一馈电线32的第二端连接在天线辐射体20的垂直轴线l 2上，以使第二馈电线32对该第二馈电线32馈入的电流进行垂直极化。
可以理解的是，当天线辐射体20对应连接有两个馈电线30时，天线辐射体20上对应有两个馈电点，参照图3所示，其中，第一馈电线31的第二端连接在天线辐射体20上的点为第一馈电点a1，第二馈电线32的第二端连接在天线辐射体20上的点为第二馈电点a2，第一馈电线31与第二馈电线32上的电流分别通过第一馈电点a1与第二馈电电a2将电流馈入天线辐射体20上。
参照图5所示，图5的虚线为第一馈电点a1和第二馈电a2在电磁波辐射频段内的隔离度，该隔离度<-10dB，能够保证辐射至金属主体10的外部的电磁波的覆盖频段，满足天线装置100的电磁波辐射要求。
为了防止金属主体10的外表面继续与空气发生反应，本申请实施例可以在金属主体10的外表面包裹氧化层(图中未示出)，以防止金属主体10表面与空气中的氧气持续反应而降低其自身的导电性能，从而确保该金属主体10的腔体11TM 102模式的稳定性。其中，该氧化层可以是氧化铝、氧化铁等氧化物薄膜。同时，该氧化层有效地防止金属主体10的外表面与空气发生氧化而出现生锈的情况，从而保持了金属主体10的外观美感，避免降低金属主体10外表面的光泽度。
可以理解的是，因氧化层通常为薄膜结构，因此其可以覆盖在顶壁12上设有缝隙121的区域。这样，天线装置100在具体工作时，金属主体10内部的电磁波依次穿过缝隙121以及该氧化层辐射至天线装置100的外部，实现信号的发送。
另外，本申请实施例的天线装置100还可以包括绝缘介质(图中未示出)，该绝缘介质填充在金属主体10的内腔中，以实现对天线辐射体20与金属主体10的内表面的有效隔离，确保单元天线的天线辐射体20以及对应的腔体11TM 102模式共同辐射出具有两个独立谐振点的电磁波，同时保证该天线装置100的覆盖带宽和辐射性能。其中，该绝缘介质可以包括但不限于聚氯乙烯、丁苯橡胶、聚酰胺等材料。
因金属主体10的内壁与天线辐射体20之间通过结缘介质进行隔离，因此可在确保金属主体10的内壁与天线辐射体20之间不发生接触的同时，缩小金属主体10的整体尺寸，从而节约该天线装置100在手机200等电子设备中的占用空间。
图8是本申请实施例一提供的天线装置的第二种结构的爆炸图，图9是本申请实施例一提供的天线装置的第二种结构的内部结构示意图。参照图8和图9所示，本申请实施例可以在金属主体10的腔体11内间隔设置多个天线辐射体20，且多个天线辐射体20在腔体11内呈阵列分布。
例如，可以在金属主体10的腔体11内设置两个天线辐射体20，两个天线辐射体20呈1*2阵列分布或者2*1阵列分布。其中，参照图8所示，1*2阵列分布具体是指沿金属主体10的x方向设置一个天线辐射体20，沿金属主体10的y方向设置两个天线辐射体20。相应地，2*1阵列分布具体是指沿金属主体10的x方向间隔设置两个天线辐射体20，沿金属主体10的y方向设置一个天线辐射体20。
再例如，可以在金属主体10的腔体11内设置四个天线辐射体20，四个天线辐射体20可以呈2*2阵列分布或者1*4阵列分布，又或者呈4*1阵列分布。图8中所示的是四个天线辐射体20呈2*2阵列分布，这样，该天线装置100形成平面阵列天线，从而在天线辐射体20所在的X-Y平面实现二维扫描，扫描角度大于45°，提高该天线装置100的覆盖面积。
通过在金属主体10的腔体11内间隔设置多个天线辐射体20，以使该天线装置100调整为阵列天线。该阵列天线的单元天线由其中一个天线辐射体20以及该天线辐射体20所激励起的腔体11TM 102模式形成。因每个单元天线均能够辐射一定带宽的频段，通过多个单元天线的叠加，增大了该天线装置100的天线增益。
另外，因相邻两个天线辐射体20之间无金属壁的存在，因此可拉紧相邻天线辐射体20之间的间隔距离，在确保每个单元天线的性能的同时，缩小了整个天线装置100的尺寸，同时也解决了相邻两个天线辐射体20的间隔过大而导致的栅瓣问题。
具体设置时，相邻两个天线辐射体20之间的间隔e约为天线装置100的工作频段的1/2波长。根据上文所述，相邻两个天线辐射体20的间隔过大，会出现栅瓣问题。并且，相邻两个天线辐射体20之间的间隔过小，会使得其中一个天线辐射体20上的电流产生的电磁波从另一个天线辐射体20上的馈电点再次传输至信号发射源中，从而对电磁波的辐射效率造成影响。
基于此，本申请实施例通过将相邻两个天线辐射体20之间的间隔设置在上述范围内，这样在保证不会出现栅瓣问题的同时，提高了相邻两个天线辐射体20上的馈电点之间的隔离度，保证每个天线辐射体20上电流产生的电磁波均能够有效的透过金属主体10的缝隙121辐射至外部环境，而不会使其中一个天线辐射体20上产生的电磁波经相邻天线辐射体20的馈电点回输至信号发射源内，从而降低了该天线装置100的回 波损耗，提高了该天线装置100的覆盖带宽。
本申请实施例中，每个天线辐射体20上的第一馈电线31和第二馈电线32的第二端即第一馈电点a1和第二馈电点a2均靠近相邻两个天线辐射体20的对称线设置，以使相邻两个天线辐射体20能够同时激励起腔体11内位于相邻两个天线辐射体20的对称线的位置产生零电场，确保每个天线辐射体20均能够有效的激励起腔体11的TM 102模式，从而激发该TM 102模式对应的电磁波，同时保证该TM 102模式产生稳定的谐振点。
例如，参照图8所示，当金属主体10的腔体11内设置4个天线辐射体20时，且4个天线辐射体20呈2*2阵列分布，则4个天线辐射体20中沿x方向上的相邻两个天线辐射体20之间的对称线记为g1，4个天线辐射体20中沿y方向的相邻两个天线辐射体20之间的对称线记为g2。
可以理解的是，位于对称线g1的两侧分别有两个天线辐射体20，同时，位于对称线g2的两侧分别有两个天线辐射体20。位于对称线g1两侧的两对天线辐射体20上的馈电点均靠近对称线g1设置，以使对称线g1两侧的两对天线辐射体20同时激励起g1所在位置产生零点场。
同时，位于对称线g2两侧的两对天线辐射体20上的两个馈电点也均靠近对称线g2设置，以使对称线g2两侧的两对天线辐射体20同时激励起g2所在位置产生零点场，从而确保每个天线辐射体20均能够有效的激励起腔体11的TM 102模式，从而激发该TM 102模式产生稳定的谐振点。
可以理解的是，因位于对称线g1两侧的两对天线辐射体20上的馈电点均靠近对称线g1设置，同时，位于对称线g2两侧的两对天线辐射体20上的两个馈电点也均靠近对称线g2设置，那么，四个天线辐射体20上的馈电点均靠近对称线g1与对称线g2的交点上。
图10是图8的仿真实验中陈列S参数曲线图，图11是图8的仿真实验中阵列增益曲线图。参照图10的实线表征可以看出，该天线装置100的S11＜-10dB的电磁波的频段大约在24GHz～30GHz，能够同时覆盖N257频段和N258频段。
图10中的多条虚线为相邻两个天线辐射体20上的各个馈电点在电磁波辐射频段内的隔离度，其中包括相邻两个天线辐射体20上的第一馈电点a1之间的隔离度、相邻两个天线辐射体20中的其中一个上的第一馈电点a1与另一个上的第二馈电点a2之间的隔离度、相邻两个天线辐射体20中的其中一个上的第二馈电点a2与另一个上的第一馈电点a1之间的隔离度以及相邻两个天线辐射体20上的第二馈电点a2之间的隔离度。
从图10的虚线可看出，所有相邻两个天线辐射体20上的各个馈电点在24GHz～30GHz频段之间的隔离度均小于-10dB，能够满足天线装置100的电磁波辐射要求。
从图11可以看出，该结构的天线装置100在24GHz～30GHz频段内的天线增益>11dB，保证了电磁波的辐射效果。
实施例二
图12是本申请实施例二提供的天线装置的第一种结构示意图。
参照图12所示，与实施例一不同的是，本实施例的天线辐射体20上连接的馈电线30的第一端是从金属主体10的侧壁14穿过并与信号发射源连接的，例如，与天线辐射体20连接的第一馈电线31和第二馈电线32的第一端均从金属主体10的侧壁14穿过并与信号发射源连接，这样，在确保馈电线30将电流传输至天线辐射体20上，使得天线辐射体20以及腔体11的TM 102模式共同产生具有大宽带的电磁波的同时，缩小了馈电线30在垂直于天线辐射体20的方向上占用尺寸，从而有效地缩小了该天线装置100的厚度。
参照图12所示，具体设置时，第一馈电线31和第二馈电线32的第二端均从金属主体10的侧壁14延伸至天线辐射体20邻近该侧壁14的边缘，以减小第一馈电线31和第二馈电线32在金属主体10内的延伸长度，从而避免第一馈电线31和第二馈电线32扰乱金属腔体11内的电场，保证金属主体10的腔体11TM 102模式以及天线辐射体20产生的电磁波的稳定性。
以金属主体10的腔体11以及天线辐射体20的横截面均为长方形结构为例，第一馈电线31的第一端连接在金属主体10外部的信号发射源上，第一馈电线31的第二端穿过金属主体10平行于y方向上的侧壁14并延伸至与该侧壁14邻近的天线辐射体20的其中一个边缘，第二馈电线32的第一端连接在金属主体10外部的信号发射源上，第二馈电线32的第二端穿过金属主体10平行于x方向上的侧壁14并延伸至与该侧壁14邻近的天线辐射体20的另一个边缘。
需要说明的是，第一馈电线31与第二馈电线32的第二端分别连接在天线辐射体20的水平轴线l 1和垂直轴线l 2上，以使第一馈电线31与第二馈电线32实现对进入天线辐射体20上的电流的水平极化和垂直极化。
图13是本申请实施例二提供的天线装置的第二种结构示意图。与本申请实施例一相同的是，本申请实施例二的天线辐射体20可以是1个，如图12所示。当然，该天线辐射体20也可以设置有多个，如图13所示。当金属主体10的腔体11内设置多个呈阵列分布的天线辐射体20时，每个天线辐射体20上的第一馈电线31和第二馈电线32的第二端均从金属主体10的侧壁14延伸至天线辐射体20邻近该侧壁14的边缘处。
继续参照图13，还是以在金属主体10的腔体11内设置有4个呈2*2阵列分布的天线辐射体20的结构为例，与实施例一样，4个天线辐射体20中沿x方向上的相邻两个天线辐射体20之间的对称线记为g1，4个天线辐射体20中沿y方向的相邻两个天线辐射体20之间的对称线记为g2。位于对称线g1左侧的两个天线辐射体20的一个边缘邻近金属主体10的左侧壁14，则这两个天线辐射体20上的其中一个馈电线30的第二端连接在天线辐射体20靠近左侧壁14的边缘上，这两个天线辐射体20上的其中一个馈电线30的第一端穿过该金属主体10的左侧壁14连接至信号发射源上。同时，这两个天线辐射体20中，位于对称线g2左侧的天线辐射体20的另一边缘与金属主体10的前侧壁14邻近，则该天线辐射体20上的另一个馈电线30的第二端连接在天线辐射体20靠近前侧壁14的边缘上，该天线辐射体20上的另一个馈电线30的第一端穿过金属主体10的前侧壁14与外部的信号发射源连接，相应地，位于对称线g2右侧的天线辐射体20的另一边缘与金属主体10的后侧壁14邻近，则该天线辐射体20上 的另一个馈电线30的第二端连接在天线辐射体20靠近后侧壁14的边缘上，该天线辐射体20上的另一个馈电线30的第一端穿过金属主体10的后侧壁14与外部的信号发射源连接。
同理，位于对称线g1右侧的两个天线辐射体20的一个边缘邻近金属主体10的右侧壁14，则这两个天线辐射体20上的其中一个馈电线30的第二端连接在天线辐射体20靠近右侧壁14的边缘上，这两个天线辐射体20上的其中一个馈电线30的第一端穿过该金属主体10的右侧壁14连接至信号发射源上。
同时，这两个天线辐射体20中，位于对称线g2左侧的天线辐射体20的另一边缘与金属主体10的前侧壁14邻近，则该天线辐射体20上的另一个馈电线30的第二端连接在天线辐射体20靠近前侧壁14的边缘上，该天线辐射体20上的另一个馈电线30的第一端穿过金属主体10的前侧壁14与外部的信号发射源连接，相应地，位于对称线g2右侧的天线辐射体20的另一边缘与金属主体10的后侧壁14邻近，则该天线辐射体20上的另一个馈电线30的第二端连接在天线辐射体20靠近后侧壁14的边缘上，该天线辐射体20上的另一个馈电线30的第一端穿过金属主体10的后侧壁14与外部的信号发射源连接。
为了保证每个天线辐射体20能够激励起对应的TM 102模式，本申请实施例的天线装置100还包括至少一个金属柱40，该金属柱40竖直设置在金属主体10的顶壁12与底壁13之间，并且该金属柱40位于相邻两个天线辐射体20的对称线上，以使相邻两个天线辐射体20能够同时激励起腔体11内位于相邻两个天线辐射体20的对称线的位置产生零电场，确保每个天线辐射体20均能够有效的激励起腔体11的TM 102模式，从而激发该TM 102模式对应的谐振点。
例如，可以在对称线g1上设置1个，或者多个间隔设置的金属柱40，以使对称线g1两侧的两对天线辐射体20同时激励起g1所在位置产生零点场。同时，在对称线g2上也设置1个或者多个间隔分布的金属柱40，以使对称线g2两侧的两对天线辐射体20同时激励起g2所在位置产生零点场，从而确保每个天线辐射体20均能够有效的激励起腔体11的TM 102模式，从而激发该TM 102模式产生稳定的谐振点。
其中，在相邻两个天线辐射体20的对称线上例如在g1和g2上均间隔设置多个金属柱40，以更好的维持每个天线辐射体20激励起的腔体11的TM 102模式，从而保证每个单元天线所辐射的电磁波均具有两个传输性能佳的谐振点。
参照图13所示，在一种可选的实现方式中，在上述4个呈2*2阵列分布的天线辐射体20的结构中，金属柱40的数量可以为一个，该金属柱40设置在4个天线辐射体20的中心位置即g1和g2的交点处，这样，在保证四个天线辐射体20能够分别激励起自身对应的TM 102模式，保证整个天线装置100的辐射带宽以及信号传输性能的同时，减少了金属柱40的设置数量，从而提高了天线装置100的装配效率。
本申请实施例的金属柱40在具体设置时，其两端可分别连接在顶壁12和底壁13的内表面，以提高金属柱40在金属主体10内部的稳固性，同时提高对腔体11的TM 102模式的维持效果。具体连接时，该金属柱40的两端可以分别焊接在金属主体10的顶壁12和底壁13上，也可以粘接在金属主体10的顶壁12和底壁13上。本申请实施例具体不对金属柱40与金属主体10的顶壁12和底壁13之间的连接方式进行限制。
图14是图13的仿真实验中阵列S参数曲线图；图15是图13的仿真实验中阵列增益曲线图。从图14中的实线的表征可以看出，图13所示的该天线装置100的S11＜-8dB的电磁波的频段大约在24GHz～30GHz，能够同时覆盖N257频段和N258频段。
图14中的多条虚线为相邻两个天线辐射体20上的各个馈电点在电磁波辐射频段内的隔离度，其中包括相邻两个天线辐射体20上的第一馈电点a1之间的隔离度、相邻两个天线辐射体20中的其中一个上的第一馈电点a1与另一个上的第二馈电点a2之间的隔离度、相邻两个天线辐射体20中的其中一个上的第二馈电点a2与另一个上的第一馈电点a1之间的隔离度以及相邻两个天线辐射体20上的第二馈电点a2之间的隔离度。
从图14的虚线可看出，所有相邻两个天线辐射体20上的各个馈电点在24GHz～30GHz频段之间的隔离度均小于-10dB，能够满足天线装置100的电磁波辐射要求。
从图15可以看出，图13所示的天线装置100在24GHz～30GHz频段内的天线增益>11dB，保证了电磁波的辐射效果。
实施三
图16是本申请实施例三提供的手机200的结构示意图。参照图16所示，以手机200为例，本申请实施例提供的电子设备包括显示屏(图中未示出)、后盖210和上述任一实施例所述的天线装置100。其中，该天线装置100可以设置在后盖210的内部，也可以设置在后盖210与显示屏之间的安装腔内。
需要说明的是，图16中的虚线为天线装置100在后盖210上的投影区域。可以在手机等电子设备上设置一个或者多个天线装置100，以满足不同信号传输需求。
本申请实施例通过在电子设备中设置上述天线装置100，在确保辐射带宽的同时，缩小了天线装置100的厚度尺寸，从而节约了该天线装置100在电子设备中的占用空间，以为其他元器件的安装提供有效的空间。
图17是本申请实施例三提供的手机的第二种结构示意图。参照图17所示，在一些示例中，该手机200等电子设备的后盖210为金属后盖，该金属后盖可以被配置成天线装置100的金属主体10，则天线辐射体20设置在金属后盖开设的腔体11内，这样，在保证天线装置100实现电磁辐射的功能的同时，合理利用了电子设备自身的结构，从而有效地节约了天线装置100在电子设备内的占用空间，提高了电子设备的集成度。
其中，可以将该金属主体10开设有缝隙121的一面背离显示屏，以避免电磁波从缝隙121中辐射出对显示屏的视频显示造成干扰，同时也保证更多的电磁波能量发送至信号接收端，实现声音、视频等信号的有效传输。
需要说明的是，本申请实施例提供的电子设备可以包括但不限于为手机、平板电脑、笔记本电脑、超级移动个人计算机(ultra-mobile personal computer，简称：UMPC)、手持计算机、对讲机、上网本、POS机、个人数字助理(personal digital assistant，简称：PDA)、可穿戴设备、虚拟现实设备、路由器等具有天线结构的移动或固定终端。
在本申请实施例的描述中，需要说明的是，除非另有明确的规定和限定，术语“安 装”、“相连”、“连接”应作广义理解，例如，可以是固定连接，也可以是通过中间媒介间接相连，可以是两个元件内部的连通或者两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
本申请实施例的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。

Claims (21)

  1. 一种天线装置，其特征在于，包括金属主体、信号发射源、至少一个天线辐射体以及至少一个馈电线；
    所述金属主体内形成有腔体，每个所述天线辐射体悬空设置在所述腔体内，所述信号发射源位于所述金属主体的外部；
    所述天线辐射体包括第一表面以及与所述第一表面相背的第二表面，所述信号发射源通过所述馈电线向所述天线辐射体的所述第二表面馈电，所述金属主体与所述第一表面相对的一面上开设多条缝隙，以使所述金属主体内部的电磁波均通过所述缝隙向所述金属主体的外部发出。
  2. 根据权利要求1所述的天线装置，其特征在于，所述金属主体包括相对且平行设置的顶壁和底壁以及位于所述顶壁与所述底壁之间的侧壁；
    所述顶壁、底壁以及侧壁围成所述金属主体的腔体，所述缝隙开设在所述顶壁上。
  3. 根据权利要求2所述的天线装置，其特征在于，所述馈电线的第一端与所述信号发射源电连接，所述馈电线的第二端从所述金属主体的侧壁或者底壁穿过并与所述天线辐射体的第二表面电连接，或者，所述馈电线的第二端从所述金属主体的侧壁或者底壁穿过并与所述天线辐射体的第二表面耦合。
  4. 根据权利要求3所述的天线装置，其特征在于，所述天线辐射体的数量为多个，多个所述天线辐射体在所述腔体内呈阵列分布，且相邻两个所述天线辐射体间隔设置。
  5. 根据权利要求1-4任一所述的天线装置，其特征在于，每个所述天线辐射体的横截面形状包括长方形、正方形和圆形中的任意一种。
  6. 根据权利要求4或5所述的天线装置，其特征在于，每个所述天线辐射体对应连接有第一馈电线和第二馈电线，所述第一馈电线与所述第二馈电线中的其中一个的第二端连接在所述天线辐射体的水平轴线，所述第一馈电线与所述第二馈电线中的另一个的第二端连接所述天线辐射体的垂直轴线上。
  7. 根据权利要求6所述的天线装置，其特征在于，所述第一馈电线和所述第二馈电线的第一端从所述金属主体的底壁穿过并与所述信号发射源电连接。
  8. 根据权利要求7所述的天线装置，其特征在于，所述第一馈电线和所述第二馈电线的第二端均靠近相邻两个所述天线辐射体的对称线设置。
  9. 根据权利要求6所述的天线装置，其特征在于，所述第一馈电线和所述第二馈电线的的第一端从所述金属主体的侧壁穿过并与所述信号发射源连接。
  10. 根据权利要求9所述的天线装置，其特征在于，所述第一馈电线与所述第二馈电线的第二端均连接在所述天线辐射体邻近所述金属主体的侧壁。
  11. 根据权利要求10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柱；
    所述金属柱竖直设置在所述金属主体的顶壁与底壁之间；且所述金属柱位于相邻两个所述天线辐射体的对称线上。
  12. 根据权利要求11所述的天线装置，其特征在于，所述天线辐射体的数量为4个，个所述天线辐射体以矩阵方式设置在所述金属主体的腔体内。
  13. 根据权利要求12所述的天线装置，其特征在于，所述金属柱的数量为一个，所述金属柱设置在4个所述天线辐射体的中心位置。
  14. 根据权利要求11所述的天线装置，其特征在于，所述金属柱的数量为多个，多个所述金属柱间隔设置在相邻两个所述天线辐射体的对称线上。
  15. 根据权利要求11-14任一项所述的天线装置，其特征在于，所述金属柱的两端分别连接在所述顶壁和所述底壁的内表面。
  16. 根据权利要求2-15任一项所述的天线装置，其特征在于，所述金属主体的顶壁沿第一方向和第二方向均间隔设置有多条所述缝隙，且每条缝隙的两端分别延伸至所述顶壁的相对两侧的边缘；
    其中，所述第一方向与所述第二方向相互垂直。
  17. 根据权利要求1-16任一项所述的天线装置，其特征在于，所述缝隙的宽度小于或者等于15μm。
  18. 根据权利要求1-17任一项所述的天线装置，其特征在于，所述天线装置还包括氧化层；
    所述氧化层包裹在所述金属主体的外表面。
  19. 根据权利要求1-18任一项所述的天线装置，其特征在于，所述天线装置还包括绝缘介质，所述绝缘介质填充在所述金属主体的内腔中。
  20. 一种电子设备，其特征在于，包括显示屏、后盖和上述权利要求1-19任一项所述的天线装置。
  21. 根据权利要求20所述的电子设备，其特征在于，所述后盖为金属后盖，所述金属后盖被配置成所述天线装置的金属主体，且所述金属主体上开设缝隙的一面背离所述显示屏。
PCT/CN2021/085806 2020-04-22 2021-04-07 一种电子设备及天线装置 WO2021213182A1 (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114566790A (zh) * 2021-12-30 2022-05-31 深圳市飞比电子科技有限公司 无线通讯网关
TWI841119B (zh) 2022-06-24 2024-05-01 創未來科技股份有限公司 一種用於測試天線陣列的方法以及一種用於在測試步驟期間測試至少一個天線裝置的探測系統

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115426056B (zh) * 2022-10-21 2023-02-28 成都天锐星通科技有限公司 一种谐振抑制电路及电子产品

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105826652A (zh) * 2015-11-02 2016-08-03 维沃移动通信有限公司 一种移动终端的天线装置和移动终端
US20170346185A1 (en) * 2016-05-27 2017-11-30 Taiwan Semiconductor Manufacturing Co., Ltd. Antenna device and method for manufacturing antenna device
CN110098465A (zh) * 2019-04-26 2019-08-06 维沃移动通信有限公司 一种高度集成天线设计的无线终端设备
CN110212283A (zh) * 2019-05-22 2019-09-06 维沃移动通信有限公司 一种天线单元及终端设备
CN110676580A (zh) * 2019-11-06 2020-01-10 Oppo广东移动通信有限公司 一种天线模组以及终端

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080094297A1 (en) * 2006-10-23 2008-04-24 Peter Petkov Wideband fractal slot antenna
TW201427181A (zh) * 2012-12-25 2014-07-01 Compal Electronics Inc 多頻天線
CN104078752B (zh) * 2014-06-23 2017-05-03 芜湖航飞科技股份有限公司 一种车载短波通信天线
CN105762500A (zh) * 2014-12-19 2016-07-13 哈尔滨飞羽科技有限公司 环形天线滤波器装置
CN205657166U (zh) * 2016-04-29 2016-10-19 广东欧珀移动通信有限公司 天线装置及移动终端
TWI624995B (zh) * 2016-09-09 2018-05-21 Read Tag Tech Corp Long-range radio frequency anti-metal identification tag
CN108093105A (zh) * 2017-12-27 2018-05-29 宇龙计算机通信科技(深圳)有限公司 一种通信终端
CN108400424A (zh) * 2018-03-30 2018-08-14 深圳市中天迅通信技术股份有限公司 一种金属外框智能电视天线
TWI675505B (zh) * 2018-07-06 2019-10-21 緯創資通股份有限公司 行動裝置
CN110137675B (zh) * 2019-05-22 2021-03-12 维沃移动通信有限公司 一种天线单元及终端设备
CN110828985A (zh) * 2019-10-31 2020-02-21 维沃移动通信有限公司 一种天线单元及电子设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105826652A (zh) * 2015-11-02 2016-08-03 维沃移动通信有限公司 一种移动终端的天线装置和移动终端
US20170346185A1 (en) * 2016-05-27 2017-11-30 Taiwan Semiconductor Manufacturing Co., Ltd. Antenna device and method for manufacturing antenna device
CN110098465A (zh) * 2019-04-26 2019-08-06 维沃移动通信有限公司 一种高度集成天线设计的无线终端设备
CN110212283A (zh) * 2019-05-22 2019-09-06 维沃移动通信有限公司 一种天线单元及终端设备
CN110676580A (zh) * 2019-11-06 2020-01-10 Oppo广东移动通信有限公司 一种天线模组以及终端

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114566790A (zh) * 2021-12-30 2022-05-31 深圳市飞比电子科技有限公司 无线通讯网关
TWI841119B (zh) 2022-06-24 2024-05-01 創未來科技股份有限公司 一種用於測試天線陣列的方法以及一種用於在測試步驟期間測試至少一個天線裝置的探測系統

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