Antenna device and electronic device

Abstract

An antenna device and an electronic device. The antenna device includes a first feed source, a second feed source, a first filtering circuit, a first radiator, and a second radiator. The first filtering circuit is coupled between the first feed source and the first radiator. A coupling gap is formed between the second radiator and the first radiator. The first filtering circuit opens the second excitation signal provided by the second feed source, and the second excitation signal is coupled to the first radiator, causing the first radiator and the second radiator to resonate in a second frequency band.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and particularly to an antenna device and an electronic device. Background Art

[0002] With the development of communication technologies, electronic devices such as smart phones can perform more and more functions, and the communication modes of electronic devices are also more diverse. For example, a common electronic device can support multiple communication modes such as cellular network communication, Wireless Fidelity (Wi-Fi) communication, Global Positioning System (GPS) communication, Bluetooth (BT) communication, and Near Field Communication (NFC). And the above communication functions all need corresponding antenna devices to implement. Summary of the Invention

[0003] An embodiment of this application provides an antenna device and an electronic device. The antenna device can at least transmit radio frequency signals of two frequency bands, and the space occupied by the antenna device is small, which can realize miniaturization of the antenna device.

[0004] In a first aspect, an embodiment of this application provides an antenna device, including:

[0005] A first radiator, the first radiator includes a first feeding end and a first grounding end which are arranged at intervals;

[0006] A first filtering circuit, which is coupled to the first radiator through the first feeding end;

[0007] A first feed source, which is coupled to the first filtering circuit. The first feed source is used to provide a first excitation signal, and the first excitation signal is used to excite the first radiator to generate resonance in a first frequency band;

[0008] A second radiator, the second radiator includes a second feeding end and a second grounding end which are arranged at intervals. A coupling gap is formed between the second radiator and the first radiator on the side where the second feeding end is located;

[0009] A second feed source, which is coupled to the second radiator through the second feeding end. The second feed source is used to provide a second excitation signal; wherein,

[0010] the first filtering circuit opens the second excitation signal, and at least part of the second excitation signal is coupled to the first radiator through the coupling gap. The second excitation signal is used to excite the first radiator and the second radiator to jointly generate resonance in a second frequency band.

[0011] Second aspect, an embodiment of the present application further provides an electronic device, including an antenna device, where the antenna device includes:

[0012] A first radiator, the first radiator includes a first feeding end and a first grounding end which are spaced apart;

[0013] A first filtering circuit, coupled to the first radiator through the first feeding end;

[0014] A first feed source, coupled to the first filtering circuit, the first feed source is used to provide a first excitation signal, and the first excitation signal is used to excite the first radiator to generate resonance in a first frequency band;

[0015] A second radiator, the second radiator includes a second feeding end and a second grounding end which are spaced apart, and a coupling gap is formed between the second radiator and the first radiator on the side where the second feeding end is located;

[0016] A second feed source, coupled to the second radiator through the second feeding end, the second feed source is used to provide a second excitation signal; wherein,

[0017] The first filtering circuit is open to the second excitation signal, and at least part of the second excitation signal is coupled to the first radiator through the coupling gap, and the second excitation signal is used to excite the first radiator and the second radiator to jointly generate resonance in a second frequency band. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings required for the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

[0019] Figure 1 It is a first structural schematic diagram of the electronic device provided by the embodiment of the present application.

[0020] Figure 2 It is a first structural schematic diagram of the antenna device provided by the embodiment of the present application.

[0021] Figure 3 is Figure 2 A first current schematic diagram of the antenna device shown.

[0022] Figure 4 is Figure 2 A second current schematic diagram of the antenna device shown.

[0023] Figure 5It is the second structural schematic diagram of the antenna device provided by the embodiment of the present application.

[0024] Figure 6 It is Figure 5 the first current schematic diagram of the antenna device shown.

[0025] Figure 7 It is Figure 5 the second current schematic diagram of the antenna device shown.

[0026] Figure 8 It is Figure 5 the third current schematic diagram of the antenna device shown.

[0027] Figure 9 It is Figure 5 the schematic diagram of the reflection coefficient and isolation curve of the first feed source and the second feed source of the antenna device shown.

[0028] Figure 10 It is Figure 5 the system efficiency diagram of the antenna device shown under the operation of the first feed source and the second feed source.

[0029] Figure 11 It is the third structural schematic diagram of the antenna device provided by the embodiment of the present application.

[0030] Figure 12 It is the fourth structural schematic diagram of the antenna device provided by the embodiment of the present application.

[0031] Figure 13 It is the fifth structural schematic diagram of the antenna device provided by the embodiment of the present application. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying Figures 1 to 13 drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0033] The embodiment of the present application provides an electronic device. The electronic device can be a device such as a smart phone, a tablet computer, etc., and can also be a game device, an augmented reality (AR) device, an automotive device, a data storage device, an audio playback device, a video playback device, a notebook computer, a desktop computing device, etc. Please refer to Figure 1 , Figure 1The first structural schematic diagram of the electronic device provided by the embodiment of the present application. The electronic device 100 includes a display screen 110, a middle frame 120, a circuit board 130, a battery 140, and a rear case 150.

[0034] Among them, the display screen 110 can be arranged on the middle frame 120 and connected to the rear case 150 through the middle frame 120 to form the display surface of the electronic device 100. The display screen 110 is used to display information such as images and texts. Among them, the display screen 110 can include a liquid crystal display (LCD) or an organic light-emitting diode (OLED) display screen and other types of display screens.

[0035] It can be understood that the display screen 110 can be a full-screen. At this time, the entire area of the display screen 110 is the display area and does not include the non-display area, or the non-display area on the display screen 110 only occupies a small area for the user. Therefore, the display screen 110 has a large screen-to-body ratio. Or, the display screen 110 can also be a non-full-screen. At this time, the display screen 110 includes a display area and a non-display area adjacent to the display area. Among them, the display area is used to display information, and the non-display area does not display information.

[0036] It can be understood that a cover plate (not shown in the figure) can also be arranged on the display screen 110 to protect the display screen 110 from being scratched or damaged by water. Among them, the cover plate can be a transparent glass cover plate, so that the user can observe the content displayed on the display screen 110 through the cover plate. It can be understood that the cover plate can be a glass cover plate made of sapphire material.

[0037] The middle frame 120 can be a thin plate-like or sheet-like structure, or a hollow frame structure. The middle frame 120 is used to provide a supporting role for the electronic devices or functional components in the electronic device 100 to install the electronic devices and functional components of the electronic device 100 together. For example, structures such as grooves, protrusions, and through holes can be arranged on the middle frame 120 to facilitate the installation of the electronic devices or functional components of the electronic device 100. It can be understood that the material of the middle frame 120 can include metals or plastics, etc.

[0038] The circuit board 130 can be disposed on the middle frame 120 for fixation, and the circuit board 130 can be sealed inside the electronic device 100 by the rear case 150. Among them, the circuit board 130 can be the main board of the electronic device 100. A feed source can be disposed on the circuit board 130, and the feed source can be electrically connected to the antenna radiator so that the antenna radiator can transmit wireless signals. A processor can be integrated on the circuit board 130. In addition, one or more of functional components such as a headphone jack, an acceleration sensor, a gyroscope, and a motor can also be integrated. At the same time, the display screen 110 can be electrically connected to the circuit board 130 to control the display of the display screen 110 through the processor on the circuit board 130.

[0039] The battery 140 is disposed on the middle frame 120, and the battery 140 is sealed inside the electronic device 100 by the rear case 150. At the same time, the battery 140 is electrically connected to the circuit board 130 to enable the battery 140 to supply power to the electronic device 100. Among them, a power management circuit can be disposed on the circuit board 130. The power management circuit is used to distribute the voltage provided by the battery 140 to each electronic component in the electronic device 100.

[0040] The rear case 150 is connected to the middle frame 120. For example, the rear case 150 can be attached to the middle frame 120 through an adhesive such as double-sided tape to achieve connection with the middle frame 120. Among them, the rear case 150 is used to jointly seal the electronic components and functional components of the electronic device 100 inside the electronic device 100 with the middle frame 120 and the display screen 110, so as to protect the electronic components and functional components of the electronic device 100.

[0041] Among them, an antenna device can also be disposed in the electronic device 100. The antenna device is used to implement the wireless communication function of the electronic device 100. For example, the antenna device can be used to implement the near-field communication function. The antenna device can be disposed inside the housing of the electronic device 100. It can be understood that some components of the antenna device can be integrated on the circuit board 130. For example, the signal processing chip and the signal processing circuit in the antenna device can be integrated on the circuit board 130 to achieve the electrical connection between the antenna device and the circuit board 130. In addition, some components of the antenna device can also be directly disposed inside the electronic device 100. For example, the radiator or conductor structure for radiating signals in the antenna device can be directly disposed on the inner surface of the rear case.

[0042] Please refer to Figure 2 , Figure 2 which is the first structural schematic diagram of the antenna device provided by the embodiment of the present application. The antenna device 200 can include a first feed source 210, a second feed source 220, a first filter circuit LC1, a first radiator 230, a second radiator 240, and a ground plane 250.

[0043] Among them, the first feeder 210 and the second feeder 220 can be disposed on the circuit board 130 of the electronic device 100, or can also be disposed on other small boards of the electronic device 100. The first feeder 210 can feed a wireless signal into the first radiator 230, and the second feeder 220 can feed a wireless signal into the second radiator 240. Further, the first feeder 210 and the second feeder 220 can transmit wireless signals to free space.

[0044] Among them, the first radiator 230 and the second radiator 240 can be antenna radiators made of conductive materials such as metal, conductive silver paste materials, etc. The first radiator 230 and the second radiator 240 are disposed opposite to each other so that a coupling gap 201 is provided between the first radiator 230 and the second radiator 240.

[0045] The first radiator 230 can include a first free end (not shown in the figure), a first grounding end 231 and a first feeding end 232 which are spaced apart. The first free end can be the end close to the coupling gap 201, and the first free end can be disposed opposite and spaced apart from the second radiator 240. The first grounding end 231 can be the end far from the coupling gap 201. The first feeding end 232 can be disposed at the end of the first radiator 230, such as at the positions of the first free end and the first grounding end 231. The first feeding end 232 can also be disposed between the first free end and the first grounding end 231. The first grounding end 231 can be electrically connected to the grounding plane 250 to realize grounding of the first radiator 230. The first feeding end 232 can be directly or indirectly electrically connected to the first feeder 210 so that the first feeder 210 can transmit wireless signals to the first radiator 230.

[0046] It can be understood that, in addition to the first free end, the first grounding end 231 and the first feeding end 232 on the first radiator 230, other feeding ends can also be provided to realize electrical connection between the first radiator and other electronic devices.

[0047] The second radiator 240 may include a second free end (not shown in the figure), second grounding ends 241 disposed at intervals, and a second feeding end 242. The second free end may be the end close to the coupling gap 201. The second free end may be disposed opposite and at an interval from the first radiator 230. The second grounding end 241 may be the end far from the coupling gap 201. The second feeding end 242 may be disposed at the end of the second radiator 240, such as at the positions of the second free end and the second grounding end 241. The second feeding end 242 may also be disposed between the second free end and the second grounding end 241. The coupling gap 201 may be formed between the second radiator 240 on the side where the second feeding end 242 is located and the first radiator 230. The second grounding end 241 may be electrically connected to the grounding plane 250 to achieve grounding of the second radiator 240. The second feeding end 242 may be directly or indirectly electrically connected to the second feed source 220, so that the second feed source 220 can transmit wireless signals to the second radiator 240.

[0048] It can be understood that, in addition to the first free end, the first grounding end 241, and the first feeding end 242 on the second radiator 240, other feeding ends may also be provided to achieve connection between the second radiator and other electronic devices.

[0049] Among them, the first filter circuit LC1 may be disposed on the circuit board 130 of the electronic device 100, and the first filter circuit LC1 may also be disposed on other small boards of the electronic device 100. The first filter circuit LC1 may be coupled to the first radiator 230, and the first filter circuit LC1 may also be coupled to the first feed source 210. That is, the first filter circuit LC1 may be connected in series between the first feed source 210 and the first radiator 230, and the first filter circuit LC1 may be coupled to the first radiator 230 through the first feeding end 232 to achieve electrical connection between the first feed source 210 and the first radiator 230.

[0050] The grounding plane 250 is used to form a common ground. Among them, the grounding plane 250 may be formed by conductors, printed circuits, or metal printed layers in the electronic device 100. For example, the grounding plane 250 may be disposed on the circuit board 130 of the electronic device 100. The grounding plane 250 may also be formed on the housing of the electronic device 100. For example, the grounding plane 250 may be formed by the middle frame 120 of the housing, or the grounding plane 250 may also be formed by the battery cover 140 of the housing.

[0051] It can be understood that the first radiator 230 and the second radiator 240 may be grounded through the grounding plane 250. Of course, the first radiator 230 and the second radiator 240 may also be electrically connected to other grounding systems to achieve grounding.

[0052] Among them, please combine Figure 2 And please refer toFigure 3 and Figure 4 , Figure 3 is Figure 2 the first current schematic diagram of the antenna device shown in Figure 4 is Figure 2 the second current schematic diagram of the antenna device shown in

[0053] Exemplarily, as Figure 3 shown, when the first feed source 210 feeds a first excitation signal into the first radiator 230, the first filter circuit LC1 can allow the first excitation signal to pass through. The first current I1 can flow from the first feed source 210 through the first filter circuit LC1 and into the first radiator 230. The first excitation signal can excite the first radiator 230 to generate resonance in the first frequency band. The first excitation signal does not couple the first radiator 230 to the second radiator 240. The first current I1 hardly transmits in the second radiator 240. The first excitation signal is almost only transmitted to the free space through the first radiator 230. It can be understood that the first excitation signal in the free space can also be transmitted from the first radiator 230 to the first feed source 210 through the reverse process of the above process.

[0054] It can be understood that the length, impedance, resonance point, etc. of the second radiator 240 can be adjusted so that when the first radiator 230 transmits the first excitation signal, the second radiator 240 does not couple with the coupling gap 201 of the first radiator 230, and the second radiator 240 hardly transmits the first excitation signal.

[0055] Such as Figure 4As shown, when the second feeder 220 feeds a second excitation signal to the second radiator 240, the second current I2 can flow from the second feeder 220 into the second radiator 240. The second current I2 can be coupled and transmitted from the second radiator 240 to the first radiator 230 through the coupling gap 201 and transmitted in the first radiator 230. The first filter circuit LC1 can prevent the second excitation signal from passing through. The first filter circuit LC1 can be open-circuited to the second excitation signal. At least part of the second excitation signal can be coupled to the first radiator 230 through the coupling gap 201. The second excitation signal can excite the second radiator 240 and the first radiator 230 to jointly generate resonance in the second frequency band to radiate the second excitation signal. Furthermore, the second excitation signal and the second current I2 do not flow from the first filter circuit LC1 into the first feeder 210. The second current I2 can be grounded from the first grounding end 231 of the first radiator 230 to form a loop. At this time, the second current I2 flows from the second feeder 220 through the second radiator 240 and the first radiator 230, and the second radiator 240 and the first radiator 230 jointly transmit the second excitation signal. It can be understood that the second excitation signal in free space can also be transmitted from the first radiator 230 and the second radiator 240 to the second feeder 220 through the reverse process of the above process.

[0056] It can be understood that the first filter circuit LC1 being open-circuited to the second excitation signal may mean that at the resonance of the second excitation signal, the resistance of the first filter circuit LC1 is infinite to block the second excitation signal from flowing into the first feeder 210.

[0057] It can be understood that the length, impedance, resonance point, etc. of the first radiator 230 can be adjusted so that when the second radiator 240 transmits the second excitation signal, the first radiator 230 can be coupled with the coupling gap 201 of the second radiator 240, and the first radiator 230 and the second radiator 240 can jointly transmit the second excitation signal.

[0058] Based on this, for the electronic device 100 and the antenna device 200 according to the embodiments of the present application, the second radiator 240 and the first radiator 230 are disposed opposite to each other and provided with a coupling gap 201. With the cooperation of the first feeder 210, the second feeder 220 and the first filter circuit LC1, the first feeder 210 can feed a first excitation signal to the first radiator 230, and the first radiator 230 can transmit the first excitation signal; the second feeder 220 can feed a second excitation signal to the second radiator 240. Under the action of the first filter circuit LC1, the second radiator 240 and the first radiator 230 can jointly transmit the second excitation signal. Furthermore, for the antenna device 200 according to the embodiments of the present application, the two radiators can transmit at least two different radio frequency signals, which can not only save the space volume occupied by the radiators, but also transmit wireless signals in more frequency bands, and can realize the miniaturization of the antenna device 200.

[0059] Among them, please refer to Figures 5 to 7 , Figure 5 which is the second schematic structural diagram of the antenna device provided by the embodiment of the present application, Figure 6 is Figure 5 the first current schematic diagram of the antenna device shown in Figure 7 is Figure 5 the second current schematic diagram of the antenna device shown in. The antenna device 200 may further include a second filter circuit LC2 and a third filter circuit LC3. The second filter circuit LC2 and the third filter circuit LC3 may be disposed on the circuit board 130 of the electronic device 100, and the second filter circuit LC2 and the third filter circuit LC3 may also be disposed on other small boards of the electronic device 100. The second filter circuit LC2 may be coupled to the second feed source 220 and the second radiator 240 respectively, that is, the second filter circuit LC2 may be connected in series between the second feed source 220 and the second radiator 240. The third filter circuit LC3 may also be coupled to the second feed source 220 and the second radiator 240 respectively, that is, the third filter circuit LC3 may also be connected in series between the second feed source 220 and the second radiator 240.

[0060] It can be understood that the second filter circuit LC2 may include a first end a1, a second end a2 and a third end a3, and the third end a3 may be directly or indirectly electrically connected to the second feed source 220. The first end a1 may be electrically connected to the second radiator 240, such as the second feeding end 242 of the second radiator 240, and the first end a1 may also be electrically connected to any position on the side of the second feeding end 242 close to the first radiator 230. The second end a2 may be electrically connected to the ground plane 250 to realize the grounding of the second filter circuit LC2.

[0061] The third filter circuit LC3 may include a fourth end b1, a fifth end b2 and a sixth end b3, and the sixth end b3 may be directly or indirectly electrically connected to the second feed source 220. The fourth end b1 may be electrically connected to the second radiator 240, such as the second feeding end 242 of the second radiator 240, and the fourth end b1 may also be electrically connected to any position on the side of the second feeding end 242 close to the first radiator 230. The fifth end b2 may be electrically connected to the ground plane 250 to realize the grounding of the third filter circuit LC3.

[0062] Among them, the first feed source 210 may further provide a third excitation signal. When the first feed source 210 feeds the third excitation signal into the first radiator 230, at least part of the third excitation signal may be coupled to the second radiator through the coupling gap 201. The second filter circuit LC2 may short-circuit the third excitation signal, and the third excitation signal may excite the first radiator 230 and at least part of the second radiator 240 to jointly generate resonance in the third frequency band.

[0063] As Figure 6 shown, the third excitation signal and the third current I3 can flow from the first feeder 210 through the first filter circuit LC1 and into the first radiator 230. The third excitation signal can cause electromagnetic coupling between the first radiator 230 and the second radiator 240. The third excitation signal can be coupled and transmitted from the first radiator 230 to the second radiator 240 through the coupling gap 201 and transmitted in the second radiator 240. At the same time, the second filter circuit LC2 can prevent the third excitation signal from passing through and can short-circuit the third excitation signal. The third excitation signal can excite the first radiator 230 and at least part of the second radiator 240 to jointly generate resonance in the third frequency band. Furthermore, the third excitation signal and the third current I3 do not flow from the second filter circuit LC2 into the second feeder 220. The third current I3 can be grounded from the ground terminal of the second filter circuit LC2, such as the second terminal a2, and form a loop. At this time, the current flows from the first feeder 210 through the first filter circuit LC1, the first radiator 230, the second radiator 240, the second filter circuit LC2 and is grounded. The first radiator 230 and the second radiator 240 can jointly transmit the third excitation signal. It can be understood that the third excitation signal in free space can also be transmitted from the first radiator 230 and the second radiator 240 to the first feeder 210 through the reverse process of the above process.

[0064] Among them, the first feeder 210 can also provide a fourth excitation signal. When the first feeder 210 feeds the fourth excitation signal into the first radiator 230, at least part of the fourth excitation signal can be coupled to the second radiator through the coupling gap 201. The third filter circuit LC3 can short-circuit the fourth excitation signal. The fourth excitation signal can excite the first radiator 230 and at least part of the second radiator 240 to jointly generate resonance in the fourth frequency band.

[0065] As Figure 7As shown, the fourth excitation signal and the fourth current I4 can flow from the first feed source 210 through the first filter circuit LC1 and into the first radiator 230. The fourth excitation signal can cause the first radiator 230 and the second radiator 240 to be coupled through the coupling gap 201. The fourth excitation signal can be coupled and transmitted from the first radiator 230 through the coupling gap 201 to the second radiator 240 and transmitted in the second radiator 240. The third filter circuit LC3 can prevent the fourth excitation signal from passing through and can short-circuit the fourth excitation signal. The fourth excitation signal can excite the first radiator 230 and at least part of the second radiator 240 to jointly generate resonance in the fourth frequency band. Furthermore, the fourth excitation signal and the fourth current I4 will not flow from the third filter circuit LC3 into the second feed source 220. The fourth current I4 can be grounded from the grounding end of the third filter circuit LC3, such as the fifth terminal b2, to form a loop. At this time, the current flows from the first feed source 210 through the first filter circuit LC1, the first radiator 230, the second radiator 240, the third filter circuit LC3 and is grounded. The first radiator 230 and the second radiator 240 can jointly transmit the fourth excitation signal. It can be understood that the fourth excitation signal in free space can also be transmitted from the first radiator 230 and the second radiator 240 to the first feed source 210 through the reverse process of the above process.

[0066] It can be understood that the second filter circuit LC2 short-circuiting the third excitation signal can mean that in the frequency band of the third excitation signal, the resistance of the second filter circuit LC2 is infinitesimal so that the third excitation signal is grounded. The third filter circuit LC3 short-circuiting the fourth excitation signal can mean that in the frequency band of the fourth excitation signal, the resistance of the third filter circuit LC3 is infinitesimal so that the fourth excitation signal is grounded.

[0067] It can be understood that by adjusting the length, impedance, resonance point of the second radiator 240, and adjusting the resistance, capacitance value, etc. of the second filter circuit LC2 and the third filter circuit LC3, when the first radiator 230 transmits the third excitation signal and the fourth excitation signal, the second radiator 240 can be coupled with the coupling gap 201 of the first radiator 230, and the second radiator 240 can generate resonance in the third frequency band and the fourth frequency band.

[0068] It can be understood that the antenna device can include only the second filter circuit LC2, or only the third filter circuit LC3, or can also include both the second filter circuit LC2 and the third filter circuit LC3.

[0069] It can be understood that the distance between the second feeding end 242 of the second radiator 240 and the first radiator 230 can be adjusted to adjust the frequency band ranges of the third excitation signal and the fourth excitation signal. Exemplarily, when the distance between the second feeding end 242 and the coupling gap 201 is less than the distance between the second feeding end 242 and the second grounding end 241, the second feeding end 242 is closer to the first radiator 230. The first radiator 230, the second radiator 240, and the second filter circuit LC2 and the third filter circuit LC3 electrically connected to the second feeding end 242 can resonate out the third excitation signal and the fourth excitation signal in higher frequency bands, such as the N78 frequency band (3.4 GHz to 3.6 GHz) and the N79 frequency band (4.8 GHz to 4.9 GHz).

[0070] Among them, please refer again to Figure 5 and please refer to Figure 8 , Figure 8 is Figure 5 the third current schematic diagram of the antenna device shown. The second feeder 220 can also provide a fifth excitation signal, and the fifth excitation signal can excite the second radiator 240 to generate resonance in the fifth frequency band.

[0071] Exemplarily, as Figure 8 shown, when the second feeder 220 feeds the fifth excitation signal to the second radiator 240, the fifth current I5 can flow from the second feeder 220 into the second radiator 240. The fifth excitation signal can excite the second radiator 240 to generate resonance in the fifth frequency band. The fifth excitation signal will not couple the second radiator 240 with the first radiator 230. The fifth current I5 hardly transmits in the first radiator 230. The fifth excitation signal almost only transmits to the free space through the second radiator 240. It can be understood that the fifth excitation signal in the free space can also be transmitted from the second radiator 240 to the second feeder 220 through the reverse process of the above process.

[0072] It can be understood that the length, impedance, resonance point, etc. of the first radiator 230 can be adjusted so that when the second radiator 240 transmits the fifth excitation signal, the first radiator 230 does not couple with the second radiator 240 through the coupling gap 201, and the first radiator 230 hardly transmits the first excitation signal.

[0073] Based on this, for the antenna device according to the embodiments of the present application, when the first feed source 210 feeds an excitation signal to the first radiator 230, under the action of the first filter circuit LC1, the second filter circuit LC2, and the third filter circuit LC3, the first radiator 230 can transmit the first excitation signal, the first radiator 230 and the second radiator 240 can jointly transmit the third excitation signal, and the first radiator 230 and the second radiator 240 can also jointly transmit the fourth excitation signal. When the second feed source 220 feeds a second excitation signal to the second radiator 240, the second radiator 240 can transmit the fifth excitation signal, and under the action of the first filter circuit LC1, the second filter circuit LC2, and the third filter circuit LC3, the first radiator 230 and the second radiator 240 can jointly transmit the second excitation signal.

[0074] It can be understood that for the antenna device 200 according to the embodiments of the present application, the second feed source 220 and the first feed source 210 can work independently or simultaneously. That is to say, the antenna device 200 can also independently implement the above process of the first feed source 210 feeding an excitation signal to the first radiator 230; the antenna device 200 can independently implement the above process of the second feed source 220 feeding an excitation signal to the second radiator 240; the antenna device 200 can also simultaneously implement the above processes of the first feed source 210 feeding an excitation signal to the first radiator 230 and the second feed source 220 feeding an excitation signal to the second radiator 240.

[0075] When the first feed source 210 feeds an excitation signal to the first radiator 230 and the second feed source 220 feeds an excitation signal to the second radiator 240, the first radiator 230 can transmit the first excitation signal, the second radiator 240 can transmit the fifth excitation signal, and the first radiator 230 and the second radiator 240 can jointly transmit the second excitation signal, the third excitation signal, and the fourth excitation signal. When transmitting the second excitation signal, the first radiator 230 and the second radiator 240 can be grounded through the first grounding end 231 of the first radiator 230; when transmitting the third excitation signal, the first radiator 230 and the second radiator 240 can be grounded through the second end a2 of the second filter circuit LC2. When transmitting the fourth excitation signal, the first radiator 230 and the second radiator 240 can be grounded through the fifth end b2 of the third filter circuit LC3.

[0076] The electronic device 100 and the antenna device 200 according to the embodiments of the present application. The second radiator 240 is disposed opposite to the first radiator 230 and has a coupling gap 201. With the cooperation of the second feeder 220, the first feeder 210, the first filter circuit LC1, the second filter circuit LC2, and the third filter circuit LC3, the first radiator 230 can transmit a first excitation signal, the second radiator 240 can transmit a fifth excitation signal, and the second radiator 240 and the first radiator 230 can jointly transmit a second excitation signal, a third excitation signal, and a fourth excitation signal. Furthermore, in the antenna device 200 according to the embodiments of the present application, the two radiators can transmit at least five radio frequency signals, which can not only save the space volume occupied by the radiators, but also transmit wireless signals in more frequency bands, and can realize the miniaturization of the antenna device 200.

[0077] Among them, the first excitation signal and the fifth excitation signal can be made different by adjusting the lengths of the first radiator 230 and the second radiator 240, and the second excitation signal, the third excitation signal, and the fourth excitation signal can be made different by adjusting the impedances of the second filter circuit LC2 and the third filter circuit LC3. Thus, the first excitation signal, the fifth excitation signal, the second excitation signal, the third excitation signal, and the fourth excitation signal can be made different from each other.

[0078] Exemplarily, the frequency range of the first frequency band generated by the first excitation signal exciting the first radiator 230 may include 1.15 GHz to 1.2 GHz, the frequency range of the fifth frequency band generated by the fifth excitation signal exciting the second radiator 240 may include 1.55 GHz to 1.6 GHz, the radio frequency range of the second frequency band jointly generated by the second excitation signal exciting the first radiator 230 and the second radiator 240 may include 2.4 GHz to 2.69 GHz, the radio frequency range of the third frequency band jointly generated by the third excitation signal exciting the first radiator 230 and the second radiator 240 may include 4.8 GHz to 4.9 GHz, and the range of the fourth excitation signal may include 3.4 GHz to 3.6 GHz. Thus, when the first feeder 210 feeds an excitation signal to the first radiator 230, the first radiator 230 can transmit the GPS-L5 frequency band (1.15 GHz to 1.2 GHz), and the second radiator 240 and the first radiator 230 can jointly transmit the N78 frequency band (3.4 GHz to 3.6 GHz) and the N79 frequency band (4.8 GHz to 4.9 GHz); when the second feeder 220 feeds an excitation signal to the second radiator 240, the second radiator 240 can transmit the GPS-L1 frequency band (1.55 GHz to 1.6 GHz), and the second radiator 240 and the first radiator 230 can jointly transmit the 2.4G Wi-Fi frequency band (2.4 GHz to 2.48 GHz) and the N41 frequency band (2.5 GHz to 2.69 GHz).

[0079] Please refer to Figure 5 and also refer to Figure 9 and Figure 10 , Figure 9 which are Figure 5 schematic diagrams of the reflection coefficient and isolation curves of the first feeder and the second feeder of the antenna device shown, Figure 10 and Figure 5 which is the system efficiency diagram of the antenna device shown when the first feeder and the second feeder are operating.

[0080] As Figure 9 shown, curve S1 is a schematic diagram of the reflection coefficient curve of the first feeder 210; curve S2 is a schematic diagram of the reflection coefficient curve of the second feeder 220; curve S3 is a schematic diagram of the isolation curve between the first feeder 210 and the second feeder 220. As Figure 10 shown, curve S4 is the system efficiency curve of the antenna device 200 when the first feeder 210 is operating; curve S5 is the system efficiency curve of the antenna device 200 when the second feeder 220 is operating.

[0081] From curve S1 and curve S3, it can be seen that when the first feeder 210 feeds an excitation signal to the first radiator 230, within the operating frequency bands of the antenna device 200 in the GPS-L5 band (1.15 GHz to 1.2 GHz), N78 band (3.4 GHz to 3.6 GHz), and N79 band (4.8 GHz to 4.9 GHz), the first feeder 210 and the second feeder 220 have good isolation, both greater than -13.5 dB. Thus, it can be seen that the antenna device 200 can operate in the GPS-L5 band, N78 band, and N79 band. Also, from curve S4, it can be seen that when the antenna device 200 operates in the GPS-L5 band, N78 band, and N79 band, the system efficiencies of the first feeder 210 and the second feeder 220 are approximately -9.8 dB, -43.3 dB, and -3.8 dB respectively, and the radiation performance of the antenna device 200 is extremely excellent.

[0082] As can be seen from curve S2 and curve S3, when the second feeder 220 feeds an excitation signal to the second radiator 240, within the operating frequency bands of the antenna device 200 in the GPS-L1 frequency band (1.55 GHz to 1.6 GHz), the 2.4G Wi-Fi frequency band (2.4 GHz to 2.48 GHz), and the N41 frequency band (2.5 GHz to 2.69 GHz), the first feeder 210 and the second feeder 220 have good isolation, both greater than -13.5 dB. Thus, it can be seen that the antenna device 200 can operate in the GPS-L1 frequency band, the 2.4G Wi-Fi frequency band, and the N41 frequency band. Moreover, as can be seen from curve S5, when the antenna device 200 operates in the GPS-L1 frequency band, the 2.4G Wi-Fi frequency band, and the N41 frequency band, the system efficiencies of the first feeder 210 and the second feeder 220 are approximately -3 dB, -4.1 dB, and -3.2 dB respectively, and the radiation performance of the antenna device 200 is extremely excellent.

[0083] For the antenna device 200 and the electronic device 100 according to the embodiments of the present application, by using the first radiator 230 and the second radiator 240 arranged opposite to each other to form a coupling gap 201 and feeding power by using the first feeder 210 and the second feeder 220, an antenna pair with a common aperture can be realized. By using the second filter circuit LC2 and the third filter circuit LC3 to be equivalent to a short circuit in the N78 and N79 frequency bands respectively, the third current I3 and the fourth current I4 are mainly grounded through the second filter circuit LC2 and the third filter circuit LC3, so that when the first feeder 210 feeds power, the antenna device 200 can operate in the N78 and N79 frequency bands. At the same time, the first feeder 210 and the second feeder 220 can also generate good isolation and will not affect the performance of the antenna device 200. Moreover, by using the first filter circuit LC1 to be equivalent to an open circuit in the 2.4G Wi-Fi and N41 frequency bands and grounding the second current I2 from the end of the first radiator 230, when the first feeder 210 feeds power, the antenna device 200 can operate in the 2.4G Wi-Fi and N41 frequency bands. At the same time, the first feeder 210 and the second feeder 220 can also generate good isolation.

[0084] The antenna device 200 and the electronic device 100 according to the embodiments of the present application utilize the relative arrangement of the first radiator 230 and the second radiator 240 to form a coupling gap 201, achieving coverage of six frequency bands, namely the GPS-L1 frequency band, the 2.4G Wi-Fi frequency band, the N41 frequency band, the GPS-L5 frequency band, the N78 frequency band, and the N79 frequency band, in a relatively small space. The antenna efficiency of the antenna device 200 in the GPS-L1 frequency band can be -3 dB, with good performance. In addition, the antenna device 200 can also operate in the GPS-L5 frequency band, and the antenna device 200 also has a good auxiliary effect on the positioning of the GPS system. At the same time, the antenna device 200 can also operate in the 2.4G Wi-Fi, N41, N78, and N79 frequency bands, and is very suitable for the fifth-generation mobile communication system (abbreviated as 5G).

[0085] Among them, please refer to again Figure 11 , Figure 11 which is the third structural schematic diagram of the antenna device provided by the embodiments of the present application. The first filter circuit LC1, the second filter circuit LC2, and the third filter circuit LC3 can all be filter circuits. A filter circuit can also be referred to as a filter network.

[0086] When the first filter circuit LC1 is arranged between the first feed source 210 and the first radiator 230, the first filter circuit LC1 can filter out the first interference signal between the first feed source 210 and the first radiator 230, and the first interference signal is an electrical signal other than the first excitation signal, the third excitation signal, and the fourth excitation signal provided by the first feed source 210. At the same time, the first filter circuit LC1 can also prevent the second excitation signal from passing through. When the first filter circuit LC1 is open, the first radiator 230 is open, and the second excitation signal is grounded through the first radiator 230.

[0087] When the second filter circuit LC2 is arranged between the second feed source 220 and the second radiator 240, the second filter circuit LC2 can filter out the second interference signal between the second feed source 220 and the second radiator 240, and the second interference signal is an electrical signal other than the fourth excitation signal and the second excitation signal provided by the second feed source 220. At the same time, the second filter circuit LC2 can also prevent the third excitation signal from passing through and can ground the third excitation signal through the second filter circuit LC2.

[0088] When the third filter circuit LC3 is disposed between the second feeder 220 and the second radiator 240, the third filter circuit LC3 can filter out the third interference signal between the second feeder 220 and the second radiator 240, and the third interference signal is an electrical signal other than the fourth excitation signal and the second excitation signal provided by the second feeder 220. At the same time, the third filter circuit LC3 can also prevent the fourth excitation signal from passing through and can cause the fourth excitation signal to pass through the third filter circuit LC3 to be grounded.

[0089] It can be understood that the first filter circuit LC1, the second filter circuit LC2, and the third filter circuit LC3 can include a circuit composed of any series or any parallel combination of capacitors and inductors.

[0090] Exemplarily, as Figure 11 shown, the first filter circuit LC1 can include, for example, an inductor L1 and a capacitor C1. Among them, the inductor L1 is connected in series between the first feeder 210 and the first radiator 230, the capacitor C1 is connected between the inductor L1 and the first radiator 230, and the capacitor C1 is grounded. It can be understood that the inductance value of the inductor L1 and the capacitance value of the capacitor C1 can be set according to actual needs.

[0091] The second filter circuit LC2 can include, for example, an inductor L2 and a capacitor C2. Among them, the inductor L2 is connected in series between the second feeder 220 and the second radiator 240, the capacitor C2 is connected between the inductor L2 and the second feeder 220, and the capacitor C2 is grounded. It can be understood that the inductance value of the inductor L2 and the capacitance value of the capacitor C2 can be set according to actual needs.

[0092] The third filter circuit LC3 can include, for example, an inductor L3 and a capacitor C3. Among them, the inductor L3 is connected in series between the second feeder 220 and the second radiator 240, the capacitor C3 is connected between the inductor L3 and the second feeder 220, and the capacitor C3 is grounded. It can be understood that the inductance value of the inductor L3 and the capacitance value of the capacitor C3 can be set according to actual needs.

[0093] It can be understood that the above are only exemplary examples of the first filter circuit LC1, the second filter circuit LC2, and the third filter circuit LC3, and the embodiments of the present application do not limit the specific structures of the first filter circuit LC1, the second filter circuit LC2, and the third filter circuit LC3.

[0094] Among them, in order to further improve the performance of the antenna device 200, please refer to Figure 5 and Figure 11 again. The antenna device 200 of the embodiments of the present application may further include a second matching circuit M2 and a first matching circuit M1. It can be understood that the matching circuit can also be referred to as a matching network, a tuning circuit, a tuning network, etc.

[0095] As Figure 5 shown, the first matching circuit M1 can be coupled between the first feeder 210 and the first radiator 230. For example, the first matching circuit M1 is connected in series between the first feeder 210 and the first filter circuit LC1. The first matching circuit M1 can match the impedance when the first feeder 210, the first radiator 230, and the second radiator 240 transmit the excitation signal, so that the first feeder 210 can transmit the first excitation signal, the third excitation signal, and the fourth excitation signal to the second radiator 240 and the first radiator 230.

[0096] The second matching circuit M2 can be coupled between the second feeder 220 and the second radiator 240. For example, the second matching circuit M2 is connected in series between the second feeder 220 and the second filter circuit LC2 and the third filter circuit LC3. The second matching circuit M2 can match the impedance when the second feeder 220, the second radiator 240, and the first radiator 230 transmit the excitation signal, so that the second feeder 220 can transmit the fourth excitation signal and the second excitation signal to the second radiator 240 and the first radiator 230.

[0097] It can be understood that both the first matching circuit M1 and the second matching circuit M2 can include a circuit composed of any series or parallel combination of capacitors and inductors. Exemplarily,

[0098] As Figure 11 shown, the first matching circuit M1 can include, for example, capacitors C4 and C5. Among them, the capacitor C4 is connected in series between the first feeder 210 and the first filter circuit LC1, the capacitor C5 is connected between the first feeder 210 and the capacitor C4, and the capacitor C5 is grounded. It can be understood that the capacitance values of the capacitors C4 and C5 can be set according to actual needs.

[0099] The second matching circuit M2 can include, for example, capacitors C6 and C7. Among them, the capacitor C6 is connected in series between the second feeder 220 and the second filter circuit LC2 and the third filter circuit LC3, the capacitor C7 is connected between the second feeder 220 and the capacitor C6, and the capacitor C7 is grounded. It can be understood that the capacitance values of the capacitors C6 and C7 can be set according to actual needs.

[0100] It should be understood that the above are only exemplary examples of both the first matching circuit M1 and the second matching circuit M2, and the embodiments of the present application do not limit the specific structures of both the first matching circuit M1 and the second matching circuit M2.

[0101] Among them, the first radiator 230 and the second radiator 240 can be disposed inside the electronic device 100. For example, the first radiator 230 and the second radiator 240 can be disposed on the circuit board 130 of the electronic device 100. The first radiator 230 and the second radiator 240 can also be disposed on the middle frame 120 of the electronic device 100. Exemplarily, please refer to Figure 12 , Figure 12 which is the fourth schematic structural diagram of the antenna device provided by the embodiment of the present application.

[0102] When the material of the middle frame 120 includes metal, the first radiator 230 and the second radiator 240 can include two metal branches on the middle frame 120. As shown in Figure 12 , a gap 101 can be disposed on the middle frame 120, and the gap 101 can cause the middle frame 120 to form a first metal branch 121 and a second metal branch 122 disposed opposite to each other. The first radiator 230 can include the first metal branch 121, and the second radiator 240 can include the second metal branch 122.

[0103] It can be understood that the above is only one form in which the first radiator 230 and the second radiator 240 are formed on the middle frame 120. For example, three gaps spaced apart can be disposed on the middle frame 120 to cause the middle frame 120 to form two opposite metal branches. The embodiment of the present application does not limit the formation manner of the first radiator 230 and the second radiator 240 on the middle frame 120.

[0104] It can be understood that the first metal branch 121 and the second metal branch 122 can be formed at the top end, bottom end, side, corner, etc. of the middle frame 120, and further, the first radiator 230 and the second radiator 240 can be formed at any part of the middle frame 120. The embodiment of the present application does not limit the specific positions of the first radiator 230 and the second radiator 240.

[0105] In the antenna device 200 of the embodiment of the present application, the first radiator 230 and the second radiator 240 are formed on the middle frame 120. The first radiator 230 and the second radiator 240 do not need to additionally occupy the space of the electronic device 100, and the miniaturization of the electronic device 100 can be further realized.

[0106] Among them, the first radiator 230 and the second radiator 240 can also be disposed on the rear case 150 of the electronic device 100. Exemplarily, please refer to Figure 13 , Figure 13 which is the fifth schematic structural diagram of the antenna device provided by the embodiment of the present application. When the material of the rear case 150 includes metal, for example, it is a metal rear case 151, as shown in Figure 13As shown, the first radiator 230 and the second radiator 240 may include two metal stubs on the metal rear case 151. An annular slot may be provided on the metal rear case 151 to separate the edge of the metal rear case 151 into two parts, and then one or more discontinuous slots 102 communicating with the annular slot are opened on the edge of the metal rear case 151, so that the metal rear case 151 can form a third metal stub 152 and a fourth metal stub 153 arranged oppositely. The first radiator 230 may include the third metal stub 152, and the second radiator 240 may include the fourth metal stub 153.

[0107] It can be understood that the above is only one form in which the first radiator 230 and the second radiator 240 are formed on the metal rear case 151. For example, three spaced L-shaped slots may be provided on the metal rear case 151 to form two opposite metal stubs on the metal rear case 151. For another example, an inverted T-shaped slot may be provided on the metal rear case 151 to form two opposite metal stubs on the metal rear case 151. It can be understood that the above is only an exemplary example of the formation of the third metal stub 152 and the fourth metal stub 153 in the embodiments of the present application, and the embodiments of the present application do not limit the formation manner of the first radiator 230 and the second radiator 240 on the metal rear case 151.

[0108] It can be understood that the third metal stub 152 and the fourth metal stub 153 may be formed at the top, bottom, side, corner and other parts of the metal rear case 151, and thus the first radiator 230 and the second radiator 240 may be formed at any part of the metal rear case 151. The embodiments of the present application do not limit the specific positions of the first radiator 230 and the second radiator 240.

[0109] In the antenna device 200 of the embodiments of the present application, the first radiator 230 and the second radiator 240 are formed on the metal rear case 151. The first radiator 230 and the second radiator 240 are closer to free space, and the clearance areas of the first radiator 230 and the second radiator 240 are larger. The excitation signals radiated and transmitted by the first radiator 230 and the second radiator 240 can be transmitted to free space with higher efficiency, and the radiation performance when the first radiator 230 and the second radiator 240 transmit signals can be improved.

[0110] It should be understood that in the description of the present application, terms such as "first" and "second" are only used to distinguish similar objects, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0111] The above has introduced in detail the antenna device and the electronic device provided by the embodiments of the present application. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only for helping to understand the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and the application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. An antenna device, comprising: A first radiator, the first radiator including a first feeding end and a first grounding end arranged at intervals; A first filtering circuit, coupled to the first radiator through the first feeding end; A first feed source, coupled to the first filtering circuit, the first feed source being configured to provide a first excitation signal for exciting the first radiator to generate resonance in a first frequency band; A second radiator, the second radiator including a second feeding end and a second grounding end arranged at intervals, a coupling gap being formed between the second radiator and the first radiator on the side where the second feeding end is located; A second feed source, coupled to the second radiator through the second feeding end, the second feed source being configured to provide a second excitation signal; wherein, The first filtering circuit is open to the second excitation signal, at least part of the second excitation signal being coupled to the first radiator through the coupling gap, the second excitation signal being configured to excite the first radiator and the second radiator to jointly generate resonance in a second frequency band; Wherein, the antenna device further includes: A second filtering circuit, a first end of the second filtering circuit being coupled to the second radiator at any position on the second feeding end or on a side of the second feeding end close to the first radiator, a second end of the second filtering circuit being grounded; The first feed source is further configured to provide a third excitation signal, at least part of the third excitation signal being coupled to the second radiator through the coupling gap, the second filtering circuit being short-circuited to the third excitation signal, the third excitation signal being configured to excite the first radiator and at least part of the second radiator to jointly generate resonance in a third frequency band.

2. The antenna device according to claim 1, wherein, The distance between the second feeding end and the coupling gap is less than the distance between the second feeding end and the second grounding end.

3. The antenna device according to claim 1, wherein, Further includes: A third filtering circuit, a first end of the third filtering circuit being coupled to the second radiator at any position on the second feeding end or on a side of the second feeding end close to the first radiator, a second end of the third filtering circuit being grounded; The first feed source is further configured to provide a fourth excitation signal, at least part of the fourth excitation signal being coupled to the second radiator through the coupling gap, the third filtering circuit being short-circuited to the fourth excitation signal, the fourth excitation signal being configured to excite the first radiator and at least part of the second radiator to jointly generate resonance in a fourth frequency band.

4. The antenna device according to claim 3, wherein, The frequency range of the first frequency band includes 1.15 GHz to 1.2 GHz, the frequency range of the third frequency band includes 4.8 GHz to 4.9 GHz, and the frequency range of the fourth frequency band includes 3.4 GHz to 3.6 GHz.

5. The antenna device according to claim 1, wherein, The second feed source is further configured to provide a fifth excitation signal for exciting the second radiator to generate resonance in a fifth frequency band.

6. The antenna device according to claim 5, wherein, The frequency range of the second frequency band includes 2.4 GHz to 2.69 GHz, and the frequency range of the fifth frequency band includes 1.55 GHz to 1.6 GHz.

7. The antenna device according to claim 1, wherein, Further includes: A first matching circuit, coupled between the first feeder and the first radiator, for impedance-matching the excitation signal provided by the first feeder.

8. The antenna device according to claim 1, wherein, It further includes: A second matching circuit, coupled between the second feeder and the second radiator, for impedance-matching the excitation signal provided by the second feeder.

9. An electronic device, including an antenna device, where the antenna device includes: A first radiator, which includes a first feeding end and a first grounding end arranged at intervals; A first filtering circuit, coupled to the first radiator through the first feeding end; A first feeder, coupled to the first filtering circuit, where the first feeder is used to provide a first excitation signal for exciting the first radiator to generate resonance in a first frequency band; A second radiator, which includes a second feeding end and a second grounding end arranged at intervals, and a coupling gap is formed between the second radiator and the first radiator on the side where the second feeding end is located; A second feeder, coupled to the second radiator through the second feeding end, where the second feeder is used to provide a second excitation signal; where The first filtering circuit is open to the second excitation signal, and at least part of the second excitation signal is coupled to the first radiator through the coupling gap, and the second excitation signal is used to excite the first radiator and the second radiator to jointly generate resonance in a second frequency band; where the antenna device further includes: A second filtering circuit, where a first end of the second filtering circuit is coupled to the second radiator at any position on the second feeding end or on the side of the second feeding end close to the first radiator, and a second end of the second filtering circuit is grounded; The first feeder is further used to provide a third excitation signal, at least part of the third excitation signal is coupled to the second radiator through the coupling gap, the second filtering circuit is short-circuited to the third excitation signal, and the third excitation signal is used to excite the first radiator and at least part of the second radiator to jointly generate resonance in a third frequency band.

10. The electronic device according to claim 9, wherein, The distance between the second feeding end and the coupling gap is less than the distance between the second feeding end and the second grounding end.

11. The electronic device according to claim 9, wherein, It further includes: A third filtering circuit, where a first end of the third filtering circuit is coupled to the second radiator at any position on the second feeding end or on the side of the second feeding end close to the first radiator, and a second end of the third filtering circuit is grounded; The first feeder is further used to provide a fourth excitation signal, at least part of the fourth excitation signal is coupled to the second radiator through the coupling gap, the third filtering circuit is short-circuited to the fourth excitation signal, and the fourth excitation signal is used to excite the first radiator and at least part of the second radiator to jointly generate resonance in a fourth frequency band.

12. The electronic device according to claim 11, wherein, The frequency range of the first frequency band includes 1.15 GHz to 1.2 GHz, the frequency range of the third frequency band includes 4.8 GHz to 4.9 GHz, and the frequency range of the fourth frequency band includes 3.4 GHz to 3.6 GHz.

13. The electronic device according to claim 9, wherein, The second feeder is further configured to provide a fifth excitation signal for exciting the second radiator to generate resonance in a fifth frequency band.

14. The electronic device according to claim 13, wherein, The frequency range of the second frequency band includes 2.4 GHz to 2.69 GHz, and the frequency range of the fifth frequency band includes 1.55 GHz to 1.6 GHz.

15. The electronic device according to claim 9, wherein, Further included is: A first matching circuit, coupled between the first feeder and the first radiator, for impedance matching of the excitation signal provided by the first feeder.

16. The electronic device according to claim 9, wherein, Further included is: A second matching circuit, coupled between the second feeder and the second radiator, for impedance matching of the excitation signal provided by the second feeder.

17. The electronic device according to claim 9, wherein, Further included is: A middle frame, including a first metal branch and a second metal branch arranged at intervals, the first radiator including the first metal branch, and the second radiator including the second metal branch.

18. The electronic device according to claim 9, wherein, Further included is: A metal rear shell, on which a third metal branch and a fourth metal branch are formed by slits, the first radiator including the third metal branch, and the second radiator including the fourth metal branch.

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