Antenna module and electronic equipment

Abstract

The invention relates to the technical field of antennas, and discloses an antenna module and electronic equipment, and the antenna module comprises a first antenna, a second antenna disposed outside a resonant cavity, and a feed circuit. The first antenna is a cavity slot antenna formed by a slot structure arranged on a resonant cavity enclosed by the metal conductive shell and the resonant cavity. The second antenna comprises at least one radiation branch knot. And the feed circuit is used for feeding excitation current into the first antenna and the second antenna so as to transmit and receive wireless signals of different frequency bands by using the radiation slot and the radiation branch knot formed by the slot structure.

Description

Technical Field

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

[0002] With the continuous development of communication technology, electronic devices such as mobile phones and computers have become an indispensable part of people's lives.

[0003] In related technologies, an antenna is provided inside an electronic device. The antenna is used to achieve wireless transmission of signals between electronic devices to meet the communication requirements between electronic devices. Limited by the space inside the electronic device, the size of the antenna is restricted. Taking a cavity slot antenna as an example, the bandwidth range of the antenna is directly affected by its own size. Therefore, it is difficult to achieve a balance between the bandwidth, performance, etc. of the antenna itself and the size of the space inside the electronic device. Summary of the Invention

[0004] In a first aspect, this application provides an antenna module, which includes a first antenna, a second antenna disposed outside a resonant cavity, and a feeding circuit. The first antenna is a cavity slot antenna composed of a slot structure opened on a resonant cavity enclosed by a metal conductive housing and the resonant cavity. The second antenna includes at least one radiation branch. The feeding circuit is used to feed an excitation current into the first antenna and the second antenna, so as to use the radiation slot formed by the slot structure and the radiation branch to transmit and receive wireless signals of different frequency bands.

[0005] In an implementable manner provided by this application, the feeding circuit includes a feed source and a feeder line. The feeder line includes a first end and a second end disposed opposite to each other. The first end is connected to the feed source, and the second end is connected to a feeding port disposed on the second antenna. Among them, the feed source is disposed inside the slot structure or the feed source extends into the slot structure through a probe; or, there is a first positional relationship between at least one radiation branch of the second antenna and the slot structure. After the feeding circuit feeds an excitation current into the second antenna, at least one radiation branch can perform coupled feeding to the slot structure.

[0006] In an implementable manner provided by this application, the resonant cavity is a plate structure with a thickness. The slot structure is opened at a first edge along the extending direction of the first edge of the plate structure; the feed source or the second antenna is disposed at one end of the slot structure, and the first edge is the long-edge of the plate structure.

[0007] In an implementable manner provided by the present application, the slot structure includes a third end and a fourth end that are oppositely arranged along the extending direction. A support structure is provided at the third end or the fourth end. A first surface of the support structure facing away from the plane where the slot structure is located is spaced apart from the plane where the slot structure is located by a first distance. The radiation branch of the second antenna is arranged on the first surface. The feeder feeds an excitation current to the radiation branch arranged on the first surface through a feeder line, so as to receive and transmit wireless signals in a first frequency band by using the radiation branch.

[0008] In an implementable manner provided by the present application, the support structure is a boss structure provided at the third end of the slot structure. The boss structure is made of the same material as the insulating dielectric layer filled in the resonant cavity. The radiation branch of the second antenna is a metal patch laid on the first surface of the boss structure or a strip slot or a circular slot opened in the metal patch; or, the support structure is a shrapnel structure provided at the fourth end of the slot structure. The second antenna is spaced apart from the slot structure by a second distance through the shrapnel structure. The second antenna includes a flexible dielectric layer and at least one radiation branch provided on the flexible dielectric layer.

[0009] In an implementable manner provided by the present application, the second antenna is spaced apart and arranged on one side in the extending direction of the slot structure through an antenna bracket, and the second antenna is coplanar or non-coplanar with the slot structure; the feeding circuit includes a feeder and a power divider. The feeder is electrically connected to the first antenna and the second antenna respectively through the power divider, so as to feed different excitation currents to the first antenna and the second antenna.

[0010] In a second aspect, the present application provides an electronic device, including a device body, a display module, and an antenna module arranged in a first gap. The device body includes a receiving groove formed by enclosing with a metal shell. The display module seals the notch of the receiving groove, and there is a first gap between the display module and the bottom of the receiving groove. The antenna module includes a first antenna, a second antenna arranged outside the resonant cavity, and a feeding circuit. The first antenna is a cavity slot antenna composed of a slot structure opened on a resonant cavity formed by enclosing with a metal conductive shell and the resonant cavity. The second antenna includes at least one radiation branch. The feeding circuit is used to feed an excitation current to the first antenna and the second antenna, so as to receive and transmit wireless signals in different frequency bands by using the radiation slot formed by the slot structure and the radiation branch.

[0011] In an implementable manner provided by the present application, the antenna module is arranged at at least one edge of the display module. The display module includes a cover plate and a display panel that are stacked. The cover plate seals the notch of the receiving groove. There is an avoidance space communicating with the first gap between the display panel and the groove wall of the receiving groove; the first antenna is arranged in the first gap, and the second antenna is located in the avoidance space.

[0012] In an implementable manner provided by the present application, the resonant cavity is a plate-like structure with a thickness. The slot structure is formed at the first edge along the extending direction of the first edge of the plate-like structure, and the slot structure faces the avoidance space. The resonant cavity further includes a second edge disposed opposite to the first edge, and the second edge is disposed in a first gap between the display panel and the bottom of the receiving groove; the spacing between the slot structure and the display panel is not less than a first distance; and / or, the spacing between the slot structure and the wall of the receiving groove is not less than a second distance.

[0013] In an implementable manner provided by the present application, the device body includes a display part composed of a housing and a display module and a main body part composed of a housing and an input device. The display part is rotatably connected to the main body part, and the antenna module is disposed in a receiving groove formed by the display part and at an edge where the display part is used to rotatably connect to the main body part; and / or, when the display part and the main body part are at a first angle, the spacing between the slot structure and the main body part is not less than a third distance. Description of the Drawings

[0014] Figure 1 Schematic diagram of the external structure of the electronic device provided by the embodiment of the present application;

[0015] Figure 2 The first cross-sectional view of the electronic device provided by the embodiment of the present application;

[0016] Figure 3 The second cross-sectional view of the electronic device provided by the embodiment of the present application;

[0017] Figure 4 The third cross-sectional view of the electronic device provided by the embodiment of the present application;

[0018] Figure 5 Schematic diagram of the comparative simulation of the reflection coefficient of the antenna module provided in the present application in the electronic device and the antenna in the related art in the electronic device;

[0019] Figure 6 Schematic diagram of the comparative simulation of the passive efficiency of the antenna module provided in the present application in the electronic device and the antenna in the related art in the electronic device;

[0020] Figure 7 Schematic diagram of the external structure of the antenna module provided by the embodiment of the present application;

[0021] Figure 8 The first cross-sectional view of the antenna module provided by the embodiment of the present application;

[0022] Figure 9 The second cross-sectional schematic diagram of the antenna module provided by the embodiment of the present application;

[0023] Figure 10 The first top view schematic diagram of the antenna module provided by the embodiment of the present application;

[0024] Figure 11 The second top view schematic diagram of the antenna module provided by the embodiment of the present application;

[0025] Figure 12 The third cross-sectional schematic diagram of the antenna module provided by the embodiment of the present application;

[0026] Figure 13 The third top view schematic diagram of the antenna module provided by the embodiment of the present application;

[0027] Figure 14 The simulation schematic diagram of the reflection coefficient of the antenna in the related art;

[0028] Figure 15 The simulation schematic diagram of the reflection coefficient of the antenna module in the present application;

[0029] Figure 16 The comparative simulation schematic diagram of the passive efficiency of the antenna module unit in the present application and the antenna unit in the related art.

[0030] Explanation of reference numerals:

[0031] 1000 - Electronic device; 100 - Device body; a - Accommodating groove; b - First gap; 110 - First body; 120 - Second body; 200 - Display module; 210 - Cover plate; 220 - Display panel; 300 - Antenna module; 310 - First antenna; 311 - Resonant cavity; c - First edge; 312 - Slot structure; 320 - Second antenna; 321 - Radiation branch; 330 - Feeding circuit; 331 - Feeder; 332 - Feeding line; 333 - Power divider; 340 - Support structure; 341 - First surface; 350 - Antenna bracket; M1 - First region; M2 - Second region; f - Avoidance space. Detailed implementation manners

[0032] It should be noted that, without conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other. The detailed description in the detailed implementation manners should be understood as an explanatory illustration of the purpose of the present application and should not be regarded as an improper limitation to the present application.

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will further describe the specific technical solutions of this application in detail with reference to the accompanying drawings in the embodiments of this application. The following embodiments are used to illustrate this application but are not used to limit the scope of this application.

[0034] In the embodiments of this application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of this application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0035] In addition, in the embodiments of this application, orientation terms such as "upper", "lower", "left", and "right" are defined relative to the orientation in which the components in the drawings are schematically placed. It should be understood that these directional terms are relative concepts, and they are used for relative description and clarification, and they can change accordingly with the change of the orientation in which the components in the drawings are placed.

[0036] In the embodiments of this application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral one; it can be directly connected or indirectly connected through an intermediate medium.

[0037] In the embodiments of this application, the terms "include", "comprise", or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device that includes a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or device. Without further limitation, an element defined by the phrase "including one..." does not exclude the existence of additional identical elements in the process, method, article, or device that includes the element.

[0038] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0039] With the development of technology, consumer electronic products such as mobile phones and laptop computers have witnessed rapid changes and significant improvements. For electronic devices like laptop computers and mobile phones, their appearance has gradually evolved from traditional plastic casings to all-metal casings. This not only makes their appearance more elegant and beautiful but also enhances their durability, improves heat dissipation performance, and enhances the user experience of consumers.

[0040] However, since the all-metal casing has a shielding effect on the antenna radiation of electronic devices, conventional PIFA (Planar Inverted-F Antenna), IFA (Inverted-F Antenna), monopole, dipole, and loop antennas, etc. will be greatly affected, which will narrow the bandwidth (absolute bandwidth) of the antenna, deteriorate the performance, and it is difficult to meet the performance requirements of electronic devices.

[0041] Based on this problem, in related technologies, there have been various solutions. For example, making the antenna far away from the all-metal casing; or setting the antenna inside the hinge of the laptop computer; or using a plastic frame to replace the metal screen frame of the all-metal casing and setting the antenna near the frame; or opening a gap on the all-metal casing and then setting the feeding structure in the gap to form an antenna.

[0042] In addition to the above several solutions, there is also a solution, which is to set a cavity slot antenna behind the display module of the electronic device so that the antenna signal can be radiated to the outside through the black edge of the electronic device or the gap of the metal casing.

[0043] However, the thickness of such a cavity slot antenna generally needs to be greater than 3 mm to meet the bandwidth and performance requirements. In this way, it will occupy too much space behind the display module, thus increasing the volume of the electronic device. If the thickness of the cavity slot antenna is compressed, it will cause the bandwidth of the antenna to narrow, making it difficult to cover the WLAN (Wireless Local Area Networks) dual-band requirements, and the passive performance of the antenna is also difficult to meet the requirements.

[0044] Based on this, as Figures 1 - 3As shown in the figure, the present application provides an electronic device 1000, which includes a device body 100, a display module 200, and an antenna module 300 disposed in the first gap b. The device body 100 includes a receiving groove a formed by enclosing with a metal housing. The display module 200 seals the notch of the receiving groove a and has a first gap b with the bottom of the receiving groove a. The antenna module 300 includes a first antenna 310, a second antenna 320 disposed outside the resonant cavity 311, and a feeding circuit 330. The first antenna 310 is a cavity slot antenna composed of a slot structure 312 formed on the resonant cavity 311 formed by enclosing with a metal conductive housing and the resonant cavity 311. The second antenna 320 includes at least one radiation branch 321. The feeding circuit 330 is used to feed excitation current into the first antenna 310 and the second antenna 320, so as to receive and transmit wireless signals of different frequency bands by using the radiation slot formed by the slot structure 312 and the radiation branch 321.

[0045] In some examples, the electronic device 1000 may be a mobile phone, a tablet computer (Pad), a laptop computer, a palm computer, a mobile Internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, etc. For ease of understanding, the present application describes and schematically illustrates the electronic device 1000 as a laptop computer.

[0046] It can be understood that the resonant cavity 311 is a metal resonant cavity. Exemplarily, the resonant cavity 311 is a plate-like structure with a thickness, such as a cuboid structure.

[0047] Among them, the resonant cavity 311 is provided with a dielectric material, and the dielectric material may be air or FR4 (Flame-Retardant 4). FR4 refers to a thermosetting substrate composed of a glass fiber cloth and an epoxy resin.

[0048] In addition, after the feeding circuit 330 feeds the excitation current into the first antenna 310, the wireless signals that the radiation slot can receive and transmit are mainly in the 2.4 GHz frequency band and the 5 GHz frequency band. After the feeding circuit 330 feeds the excitation current into the radiation branch 321, the wireless signals that the radiation branch 321 can receive and transmit are mainly in the 6 GHz frequency band or the 7 GHz frequency band. That is to say, the frequency band of the wireless signals received and transmitted by the second antenna 320 is greater than the frequency band of the wireless signals received and transmitted by the first antenna 310.

[0049] It can be understood that the wireless signals transmitted and received by the first antenna 310 and the second antenna 320 are mainly radiated through the gap between the peripheral wall surface of the display module 200 and the first body 110.

[0050] In some examples, the exciting current is generally an alternating current, but in some special cases, it can also be a direct current. The specific selection can be made according to the requirements.

[0051] Through the above settings, the accommodation groove a surrounded by the device body 100 can provide an accommodation space for the display module 200 and the antenna module 300, so as to use the device body 100 to provide physical protection for the display module 200 and the antenna module 300. The display module 200 performs screen display, and the antenna module 300 performs wireless signal transmission and reception to meet the wireless signal transmission requirements of the electronic device 1000.

[0052] Since the first antenna 310 is a cavity slot antenna, after the feeding circuit 330 feeds the exciting current into the first antenna 310, the cavity slot antenna can transmit and receive wireless signals through the slot structure 312. Since the second antenna 320 includes the radiation stub 321, after the feeding circuit 330 feeds the exciting current into the radiation stub 321, the radiation stub 321 can also transmit and receive wireless signals. In this way, the signal transmission requirements of the electronic device 1000 are met.

[0053] Also, since the wireless signal frequency bands transmitted and received by the slot structure 312 and the radiation stub 321 are different, the wireless signal frequency bands transmitted and received by the slot structure 312 and the radiation stub 321 can complement each other. Thus, even if the frequency band of the cavity slot antenna becomes narrow, it can still be compensated by the second antenna 320 to ensure the frequency band of the wireless signal. That is to say, even if the size of the cavity slot antenna in this application is reduced, for example, the thickness of the cavity slot antenna is reduced, the frequency band of the wireless signal can still be ensured. Since the size of the cavity slot antenna can be reduced, the space of the first gap b can be saved, that is, the space behind the display module 200 can be saved, thereby controlling the volume of the electronic device 1000. The antenna module 300 in this application not only ensures the bandwidth of the wireless signals transmitted and received, but also facilitates the miniaturization design of the electronic device 1000.

[0054] In some embodiments of the present application, such as Figure 1 、 Figure 2As shown in the figure, the device body 100 includes a first body 110 and a second body 120. The first body 110 is a display part, which is composed of a housing and a display module 200. The second body 120 is a host part, which is composed of a housing and an input device. The display part is rotatably connected to the host part. The antenna module 300 is disposed in the receiving groove a formed by the display part and on the edge of the display part for realizing the rotational connection with the host part; and / or, when the display part and the host part are at a first angle, the spacing distance between the gap structure 312 and the host part is not less than a third distance.

[0055] It can be understood that the display part is rotatably connected to the host part, that is, the first body 110 and the second body 120 are rotatably connected. The first body 110 and the second body 120 can be rotatably connected by a rotating shaft.

[0056] It should be explained that the above embodiment includes two solutions, which are specifically introduced as follows:

[0057] In the first example, the device body 100 includes a first body 110 and a second body 120. The first body 110 is a display part, which is composed of a housing and a display module 200. The second body 120 is a host part, which is composed of a housing and an input device. The display part is rotatably connected to the host part. The antenna module 300 is disposed in the receiving groove a formed by the display part and on the edge of the display part for realizing the rotational connection with the host part.

[0058] Since the edge area of the first body 110 for realizing the rotational connection with the second body 120 is large, sufficient installation space can be provided for the antenna module 300. And in this area, due to the existence of components such as the rotating shaft, numerous gaps will be formed on the first body 110. Therefore, it is more convenient for the antenna module 300 to receive and transmit wireless signals, so as to reduce the interference of the first body 110 made of metal material on the wireless signals and reduce the loss of the wireless signals.

[0059] In the second example, the device body 100 includes a first body 110 and a second body 120. The first body 110 is a display part, which is composed of a housing and a display module 200. The second body 120 is a host part, which is composed of a housing and an input device. The display part is rotatably connected to the host part. The antenna module 300 is disposed in the receiving groove a formed by the display part and on the edge of the display part for realizing the rotational connection with the host part, and when the display part and the host part are at a first angle, the spacing distance between the gap structure 312 and the host part is not less than a third distance.

[0060] Exemplarily, the first angle can be any suitable angle such as 80°, 90°, 100°, 110°, 120°, or 130°.

[0061] Wherein, the distance between the slot structure 312 and the host part is not less than the third distance means that at any angle, the minimum distance between the slot structure 312 and the host part is less than the third distance. The third distance refers to the non-interfering distance between the host part and the antenna module 300, so as to ensure the normal operation of the antenna module 300.

[0062] With such a setting, no matter what angle the display part and the host part are in, there is a certain distance between the slot structure 312 and the host part. This distance can reduce or avoid the interference caused by the metal components on the host part (such as the metal surface with heat dissipation holes on a laptop, which refers to the surface opposite to the display module 200 when the laptop is in the closed state) to the antenna module 300, especially reduce the interference to the second antenna 320 at the slot structure 312, thus ensuring the normal operation of the antenna module 300.

[0063] In some examples, the electronic device 1000 is a laptop. The first body 110 can be a thin plate-like structure, and the depth direction of the receiving groove a is the thickness direction of the thin plate-like structure. The second body 120 is a thin plate-like structure. The first body 110 and the second body 120 can rotate to be in a mutually buckled state. At this time, the display module 200 on the first body 110 is opposite to the keyboard on the second body 120. Or, the first body 110 and the second body 120 can also rotate in the opposite direction to be in an open state.

[0064] Wherein, after the second body 120 is placed on the placement surface, when the first body 110 and the second body 120 rotate in the opposite direction to be in an open state, the antenna module 300 is arranged at the lower side edge of the display module 200.

[0065] In some examples, as Figure 1 shown, the number of antenna modules 300 is two. Both antenna modules 300 are arranged at the edge of the display module close to the rotation connection position of the first body 110 and the second body 120, and the two antenna modules 300 are arranged at intervals along the rotation axis of the first body 110 and the second body 120.

[0066] With the above settings, the electronic device 1000 can be in an open state and a closed state through the relative rotation of the first part and the second part. In the open state, the electronic device 1000 can be operated to complete related tasks. In the closed state, the first part and the second part can be mutually buckled to protect the display module 200.

[0067] Since the edge area of the first part for rotatably connecting with the second part is relatively large, sufficient installation space can be provided for the antenna module 300. And in this area, due to the existence of components such as the rotating shaft, numerous gaps will be formed on the first body 110. Therefore, it is more convenient for the antenna module 300 to receive and transmit wireless signals, so as to reduce the interference of the metal first body 110 on the wireless signals and reduce the loss of the wireless signals.

[0068] And / or, when the gap distance between the gap structure 312 and the host part is not less than the third distance, this distance can reduce or avoid the interference caused by the metal components on the host part to the antenna module 300, thus ensuring the normal operation of the antenna module 300.

[0069] In some embodiments of the present application, as Figure 3 , Figure 4 shown, the antenna module 300 is disposed on at least one edge of the display module 200. The display module 200 includes a cover plate 210 and a display panel 220 which are stacked. The cover plate 210 seals the notch of the receiving groove a. There is an avoidance space f communicating with the first gap b between the display panel 220 and the groove wall of the receiving groove a. The first antenna 310 is disposed in the first gap b, and the second antenna 320 is located in the avoidance space f.

[0070] It can be understood that the cover plate 210 should be disposed on the outer surface of the display panel 220. The outer surface of the display panel 220 refers to the surface of the display panel 220 facing the user when the electronic device 1000 is in the open or closed state.

[0071] Among them, it can be understood that the cover plate 210 is transparent, for example, it can be glass or plastic, etc. The cover plate 210 mainly provides protection for the display panel 220.

[0072] In addition, it can be understood that the groove wall of the receiving groove a refers to the peripheral wall surface of the receiving groove a. For the convenience of understanding the avoidance space f, as Figure 3 shown, the range where M1 is located represents the avoidance space f, and the range where M2 is located represents the area where the display panel 220 is located. The avoidance space f can be a space surrounding the display panel 220 for one week, or it can also be the space between one side edge of the display panel 220 and the groove wall of the receiving groove a.

[0073] In some examples, the antenna module 300 is disposed at the edge of the display module 200 close to the rotation position of the first body 110 and the second body 120. The first body 110 includes a connected back plate, a side frame and a pressure strip, the side frame is disposed on one side of the back plate in the thickness direction and surrounds the back plate in a circumferential direction, the pressure strip is connected to the edge of the side frame close to the rotation position of the first body 110 and the second body 120, and is spaced from the back plate to form a receiving groove a with the side frame and the back plate, the display panel 220 is disposed in the receiving groove a, and has a first gap b between the back plate, the cover plate 210 is disposed on the side of the display panel 220 away from the back plate, and is located between the pressure strip and the display panel 220, and the portion of the cover plate 210 close to the first area M1 of the rotation position of the first body 110 and the second body 120 is located between the pressure strip and the back plate.

[0074] In this way, the first antenna 310 is arranged between the display panel 220 and the back plate, and the second antenna 320 is arranged between the pressure strip and the back plate. The display panel 220 can cover the first antenna 310, and the pressure strip can cover the second antenna 320. Therefore, on the basis of ensuring the performance of the first antenna 310 and the second antenna 320, the concealment of the first antenna 310 and the second antenna 320 is guaranteed, and there is no need to make major changes to the original structure of the first body 110.

[0075] Through the above arrangement, since there is an escape space f between the display panel 220 and the groove wall of the receiving groove a, the escape space f can be used to place the second antenna 320, so the arrangement of the second antenna 320 does not occupy additional space. Since the first antenna 310 is arranged between the display panel 220 and the groove bottom of the receiving groove a, and the size of the first antenna 310 can be reduced, especially the size at the first gap b can be reduced, so the gap between the display panel 220 and the groove bottom of the receiving groove a can be reduced, the depth of the receiving groove a can be controlled, and thus the size of the electronic device 1000 can be controlled.

[0076] In this way, the second antenna 320 can be set to fully utilize the space behind the cover plate 210, thereby reducing the size of the first antenna 310 to save space behind the display panel 220, balance the volume of the accommodating groove a, control the volume of the electronic device 1000, and meet the bandwidth requirements of the antenna module 300.

[0077] In some embodiments of the present application, Figure 3 , Figure 4As shown, the resonant cavity 311 is a plate structure with a thickness. The slot structure 312 is formed at the first edge c of the plate structure along the extending direction of the first edge c. The slot structure 312 faces the avoidance space f. The resonant cavity 311 further includes a second edge opposite to the first edge c, and the second edge is disposed in the first gap b between the display panel 220 and the bottom of the receiving groove a; the spacing between the slot structure 312 and the display panel 220 is not less than the first distance; and / or, the spacing between the slot structure 312 and the wall of the receiving groove a is not less than the second distance.

[0078] That is to say, it includes the following three cases. The spacing between the slot structure 312 and the display panel 220 is not less than the first distance. Or, the spacing between the slot structure 312 and the wall of the receiving groove a is not less than the second distance. Or, the spacing between the slot structure 312 and the display panel 220 is not less than the first distance, and the spacing between the slot structure 312 and the wall of the receiving groove a is not less than the second distance.

[0079] It can be understood that the wall of the receiving groove a refers to the peripheral wall surface of the receiving groove.

[0080] In some examples, the spacing between the slot structure 312 and the display panel a is L1, L1 is not less than the first distance, and the first distance is 2.5 mm. Then L1 = 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm or 5.0 mm.

[0081] In some examples, the spacing between the slot structure 312 and the wall of the receiving groove a is L2, L2 is not less than the second distance, and the second distance is 1.0 mm. Then L2 = 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm or 3.0 mm.

[0082] Through the above settings, since the display panel 220 is made of metal, in the plane where the display panel 220 is located, by controlling the spacing between the slot structure 312 and the display panel 220, interference of the display panel 220 on the second antenna 320 at the slot structure 312 can be avoided, ensuring the normal transceiver of wireless signals by the second antenna 320. And / or, since the device body 100 is made of metal, in the plane where the display panel 220 is located, by controlling the spacing between the slot structure 312 and the wall of the receiving groove a, interference of the device body 100 on the second antenna 320 can be avoided, ensuring the normal transceiver of wireless signals by the second antenna 320.

[0083] For a clearer understanding, after the above antenna module 300 is disposed in the electronic device 1000 of the present application, the performance it exhibits is referred to Figure 5 、 Figure 6As shown, simulation experiments were also conducted in this application.

[0084] Among them, in the application environment of the actual electronic device 1000, Figure 5 This is a comparison line graph of the reflection coefficient (S11) of the antenna module 300 in this application and the reflection coefficient (S11) in the conventional solution (related technology). Among them, four points were selected. According to the comparison in the figure, it can be seen that the first and second points around the low-frequency band of 2.4 GHz remain basically unchanged before and after improvement. However, for the third and fourth points in the high-frequency band range of 5.0 GHz - 7.0 GHz, smaller decibel (dB) values can be obtained. Therefore, a better reflection coefficient can be obtained, that is, better S-parameters can be obtained.

[0085] And for Figure 6 , this is a comparison line graph of the passive efficiency of the antenna module 300 in this application and the passive efficiency in the conventional solution in the actual electronic device 1000. Among them, according to the line graph, it can be seen that around the low-frequency band of 2.4 GHz, the passive efficiency of the solution in this application is basically close to that of the conventional solution. And in the range of 5.0 GHz - 7.0 GHz, the passive efficiency of the antenna module 300 in this application is greater than that of the conventional solution. Therefore, the antenna module 300 in this application can have better passive performance.

[0086] In addition, Table 1 below is a test of the throughput performance of some channels commonly used by the antenna module 300 in this application under high attenuation. It can be found that the conventional channels N11, AC157, AX64, AX117, and AX213 can all meet the spec (specification) requirements under the corresponding high attenuation.

[0087] Table 1

[0088]

[0089] On this basis, as Figure 7 shown, on the other hand, this application also provides an antenna module 300. The antenna module 300 includes a first antenna 310, a second antenna 320 disposed outside the resonant cavity 311, and a feeding circuit 330. The first antenna 310 is a cavity slot antenna composed of a slot structure 312 opened on the resonant cavity 311 formed by enclosing with a metal conductive housing and the resonant cavity 311. The second antenna 320 includes at least one radiation branch 321. The feeding circuit 330 is used to feed excitation current into the first antenna 310 and the second antenna 320, so as to use the radiation slot formed by the slot structure 312 and the radiation branch 321 to receive and transmit wireless signals of different frequency bands.

[0090] It can be understood that the resonant cavity 311 is a metal resonant cavity. Exemplarily, the resonant cavity 311 is a plate-like structure with a thickness, for example, it can be a cuboid structure.

[0091] Wherein, a dielectric material is provided inside the resonant cavity 311, and the dielectric material can be air or FR4 (Flame-Retardant 4), and FR4 refers to a thermosetting substrate composed of a glass fiber cloth and an epoxy resin.

[0092] In some examples, the first antenna 310 further includes a dielectric plate, the dielectric plate is FR4, the resonant cavity 311 includes a first guiding layer, a second guiding layer, and a plurality of guiding columns, the first conductive layer and the second conductive layer are located on two opposite side surfaces in the thickness direction of the dielectric plate, and a slot structure 312 is provided at the edge of the first conductive layer or the second conductive layer. Along the circumferential direction of the dielectric plate, a plurality of vias (through holes) are provided on the dielectric plate, and conductive columns are arranged inside the vias. One end of the conductive column is electrically connected to the first conductive layer, and the other end of the conductive column is electrically connected to the second guiding layer, thereby forming a cavity slot antenna filled with a dielectric plate inside, that is, on the basis of a double-layer PCB board, slits are made to form a cavity slot antenna. Such a setting can facilitate actual processing.

[0093] Of course, in some other examples, there can also be only air inside the resonant cavity 311, with air as the conduction medium.

[0094] In addition, after the feeding circuit 330 feeds an excitation current into the first antenna 310, the wireless signals that the radiation slot can receive and transmit are mainly in the 2.4 GHz band and the 5 GHz band. After the feeding circuit 330 feeds an excitation current into the radiation stub 321, the wireless signals that the radiation stub 321 can receive and transmit are mainly in the 6 GHz band or the 7 GHz band. That is to say, the wireless signal band received and transmitted by the second antenna 320 is greater than the wireless signal band received and transmitted by the first antenna 310.

[0095] In some examples, the excitation current is generally an alternating current, but in some special cases, it can also be a direct current. It can be selected specifically according to requirements.

[0096] In some examples, the number of the radiation stubs 321 can be 1, 2, 3, 5, or 10. It can be specifically selected and set according to needs.

[0097] With the above settings, since the first antenna 310 is a cavity slot antenna, after the feeding circuit 330 feeds an excitation current into the first antenna 310, the cavity slot antenna can transmit and receive wireless signals through the slot structure 312. Since the second antenna 320 includes radiation branches 321, after the feeding circuit 330 feeds an excitation current into the radiation branches 321, the radiation branches 321 can also transmit and receive wireless signals. In this way, the signal transmission requirements of the electronic device 1000 are met.

[0098] Also, since the wireless signal frequency bands received and transmitted by the slot structure 312 and the radiation branches 321 are different, the wireless signal frequency bands received and transmitted by the slot structure 312 and the radiation branches 321 can complement each other. Thus, even if the frequency band of the cavity slot antenna becomes narrower, it can still be compensated by the second antenna 320 to ensure the wireless signal frequency band. That is to say, even if the size of the cavity slot antenna in this application is reduced, for example, the thickness of the cavity slot antenna is reduced, the wireless signal frequency band can still be ensured. Since the size of the cavity slot antenna can be reduced, the installation space can be saved, thereby controlling the volume of the electronic device 1000. The antenna module 300 in this application not only ensures the bandwidth of the received and transmitted wireless signals, but also facilitates the miniaturization design of the electronic device 1000.

[0099] There are various ways to feed the excitation current into the first antenna 310 and the second antenna 320 using the feeding circuit 330. Two feeding methods are introduced in detail below.

[0100] In the first possible implementation, as Figure 8 shown, the feeding circuit 330 includes a feed source 331 and a feeder line 332. The feeder line 332 includes a first end and a second end that are oppositely arranged. The first end is connected to the feed source 331, and the second end is connected to a feeding port provided on the second antenna 320. Among them, the feed source 331 is disposed inside the slot structure 312 or the feed source 331 extends into the slot structure 312 through a probe.

[0101] That is to say, the feed source 331 is connected to the second antenna 320 through the feeder line 332. At the same time, the feed source 331 is disposed inside the slot structure 312 or extends into the slot structure 312 through a probe, so as to realize the feeding of the first antenna 310 on the basis of feeding the second antenna 320. The first antenna 310 and the second antenna 320 have the same feed source 331.

[0102] It can be understood that the feed 331 is a device that converts electromagnetic waves and electrical signals. When it is necessary to transmit electromagnetic waves, the electrical signal is converted into electromagnetic waves by the feed 331, and then radiated through the first antenna 310 and the second antenna 320. When it is necessary to receive electromagnetic waves, the first antenna 310 and the second antenna 320 capture the electromagnetic waves, and then the electromagnetic waves are converted into electrical signals by the feed 331 and then transmitted to the backend device (receiver).

[0103] In some examples, after the feed 331 extends to the slot structure 312 through a probe, the probe is similar to a monopole antenna, and the length of the probe is one-quarter wavelength.

[0104] In some examples, the feeder 332 can be a coaxial cable, a waveguide, a flat twin wire, etc.

[0105] Through the above settings, the feed 331 is connected to the feeding port on the second antenna 320 through the feeder 332 to feed the second antenna 320 through the feeder 332. At the same time, the feed 331 is arranged in the slot structure 312, so as to directly feed the resonant cavity 311, so as to use the same feed 331 to feed the first antenna 310 and the second antenna 320 at the same time, ensuring the transceiver of wireless signals by the first antenna 310 and the second antenna 320.

[0106] Specifically, when transmitting electromagnetic waves, the electrical signal is converted into electromagnetic waves by the feed 331. Since the feed 331 is arranged in the slot structure 312 or extends into the slot structure 312 through a probe, the electromagnetic waves emitted by the feed 331 can directly oscillate in the resonant cavity 311 and then be emitted to the outside through the slot structure 312. At the same time, the electromagnetic waves enter the second antenna 320 through the feeder 332 and are radiated through the second antenna 320.

[0107] When receiving electromagnetic waves, the first antenna 310 and the second antenna 320 capture the electromagnetic waves. The electromagnetic waves captured by the first antenna 310 are directly converted into electrical signals by the feed 331, and the electromagnetic waves captured by the second antenna 320 are transmitted to the feed 331 through the feeder 332 and then converted into electrical signals. Then the electrical signals are transmitted to the backend device (receiver). In this way, the same feed 331 is used to feed the first antenna 310 and the second antenna 320 to realize the transceiver of signals.

[0108] In the second possible implementation, as Figure 9 shown, there is a first positional relationship between at least one radiation branch 321 of the second antenna 320 and the slot structure 312. After the feeding circuit 330 feeds an exciting current into the second antenna 320, at least one radiation branch 321 can perform coupled feeding to the slot structure 312.

[0109] It should be noted that the first positional relationship refers to the distance W between the radiation stub 321 and the slot structure 312 when the radiation stub 321 can perform coupled feeding with the slot structure 312.

[0110] That is to say, the first antenna 310 is excited by the electromagnetic wave emitted by the radiation stub 321, which is a non-physical contact excitation method.

[0111] Through the above settings, the feeding circuit 330 can feed the radiation stub 321 to realize the excitation of the radiation stub 321. At the same time, the electromagnetic wave emitted by the radiation stub 321 can also act on the first antenna 310 to realize the excitation of the first antenna 310. In this way, the first antenna 310 and the second antenna 320 are also fed by the same feeding circuit 330 to realize signal transmission and reception, and the structure is more concise.

[0112] In some embodiments of the present application, as Figure 10 、 Figure 11 shown, the resonant cavity 311 is a plate structure with a thickness, and the slot structure 312 is opened at the first edge c of the plate structure along the extending direction of the first edge c. The feed source 331 or the second antenna 320 is arranged at one end of the slot structure 312, and the first edge c is the long edge of the plate structure.

[0113] It can be understood that the feed source 331 is arranged at one end of the slot structure 312 when the feeding circuit 330 includes the feed source 331 and the feeder 332, that is, when the first antenna 310 is fed by the feed source 331. With this setting, the feed source 331 is arranged at the end of the slot structure 312, which can increase the length of the first antenna 310 and expand the bandwidth of the low-frequency band radiated by the first antenna 310.

[0114] In addition, the second antenna 320 is arranged at one end of the slot structure 312 when there is a first positional relationship between the radiation stub 321 on the second antenna 320 and the slot structure 312, that is, when the radiation stub 321 can perform coupled feeding to the slot structure 312. With this setting, since the second antenna 320 is arranged at the end of the slot structure 312, the length of the first antenna 310 can be increased, and the bandwidth of the low-frequency band radiated by the first antenna 310 can be expanded.

[0115] Through the above settings, the second antenna 320 or the feed source 331 is arranged at the end of the slot antenna, so that the length of the first antenna 310 can be increased, thereby expanding the bandwidth of the low-frequency band radiated by the first antenna 310.

[0116] To ensure the independence of the first antenna 310 and the second antenna 320 in receiving electromagnetic waves respectively and without mutual influence, there should be a certain distance between the first antenna 310 and the second antenna 320. For example, the support structure 340 can be used to space the first antenna 310 and the second antenna 320 apart, or after the antenna module 300 is disposed within the electronic device 1000, the structures within the electronic device 1000 can be utilized to fix the first antenna 310 and the second antenna 320 respectively, thereby satisfying the requirement that there is a certain distance between the first antenna 310 and the second antenna 320. The following is a detailed introduction.

[0117] In some embodiments of the present application, as Figure 7 , Figure 12 shown, the slot structure 312 includes a third end and a fourth end that are oppositely disposed along the extending direction. The support structure 340 is disposed at the third end or the fourth end. The first surface 341 of the support structure 340 facing away from the plane where the slot structure 312 is located is spaced apart from the plane where the slot structure 312 is located by a first distance. The radiation stub 321 of the second antenna 320 is disposed on the first surface 341. The feed source 331 feeds an excitation current to the radiation stub 321 disposed on the first surface 341 through the feeder 332, so as to utilize the radiation stub 321 to transmit and receive wireless signals in the first frequency band.

[0118] It can be understood that the wireless signals in the first frequency band are mainly wireless signals in the range of 5 GHz - 7 GHz, among which the main ones are 6 GHz or 7 GHz wireless signals.

[0119] In addition, the first distance means that it is necessary to satisfy that the electromagnetic interference between the radiation stub 321 and the slot structure 312 is weak or there is no electromagnetic interference, so that the radiation stub 321 and the slot structure 312 can each radiate wireless signals in their respective frequency bands.

[0120] In some examples, when the antenna module 300 having the support structure 340 is disposed within the device body 100, within the plane where the display module 200 is located, the distance between the side of the support structure 340 close to the display panel 220 and the display panel 220 can be used to replace L1, and the distance between the side of the support structure 340 away from the display panel 220 and the first body 110 can be used to replace L2.

[0121] Through the above settings, the support structure 340 can provide support for the second antenna 320, so that the radiation stub 321 of the second antenna 320 can have a first distance from the slot structure 312 of the first antenna 310, so that the slot structure 312 of the first antenna 310 and the radiation gap of the second antenna 320 can each transmit and receive wireless signals in their respective frequency bands, so as to ensure the normal operation of the first antenna 310 and the second antenna 320 respectively.

[0122] The support structure 340 will be introduced below in combination with the structural form of the second antenna 320.

[0123] In the first possible implementation manner of the present application, as Figure 7 、 Figure 12 shown, the support structure 340 is a boss structure provided at the third end of the slot structure 312. The boss structure is made of the same material as the insulating dielectric layer filled in the resonant cavity 311. The radiation stub 321 of the second antenna 320 is a metal patch laid on the first surface 341 of the boss structure, or a strip slot or a circular slot opened in the metal patch.

[0124] In some examples, the resonant cavity 311 is a rectangular parallelepiped plate-like structure with a length, width, and height of 60 mm, 34 mm, and 2 mm respectively. The width of the slot structure 312 can be 5 mm, and the extending direction of the slot structure 312 is the length direction of the resonant cavity 311. The boss structure is a rectangular parallelepiped structure with a length, width, and height of 9 mm, 5 mm, and 2 mm respectively. The orientations of the length, width, and height of the resonant cavity 311 and the boss structure correspond to each other.

[0125] In some examples, the resonant cavity 311 is filled with an FR4 insulating dielectric layer, so the boss structure is also made of FR4. In this way, when setting, the boss can be integrally formed with the insulating dielectric layer through the slot structure 312, which is convenient for actual processing and manufacturing.

[0126] Among them, the radiation stub 321 is a metal patch laid on the first surface 341 of the boss structure, and the metal patch can be patches with different patterns. For example, the metal patch can be a rectangular patch, a circular patch, a triangular patch, or an oval patch, etc.

[0127] In addition, the strip slot or circular slot opened in the metal patch, that is to say, the radiation stub 321 is a slot antenna.

[0128] Through the above settings, the first surface 341 of the boss structure can provide stable support for the radiation stub 321 of the metal patch, so as to ensure that the radiation stub 321 can stably transmit and receive wireless signals, and ensure that the second antenna 320 exhibits stable radiation performance.

[0129] In the second possible implementation manner of the present application, as Figure 7 、 Figure 12 shown, the support structure 340 is a spring piece structure provided at the fourth end of the slot structure 312. The second antenna 320 is spaced from the slot structure 312 by a second distance through the spring piece structure. The second antenna 320 includes a flexible dielectric layer and at least one radiation stub 321 provided on the flexible dielectric layer.

[0130] Among them, the second distance means that it is necessary to ensure that the electromagnetic interference between the second antenna 320 and the slot structure 312 is weak or there is no electromagnetic interference, so that the second antenna 320 and the slot structure 312 can each radiate wireless signals in their respective frequency bands. The first distance and the second distance can be the same.

[0131] In some examples, the flexible dielectric layer can be a flexible printed circuit board (Flexible Printed Circuit; FPC). The flexible printed circuit board can provide support for the radiating stub 321, and the elastic sheet structure can provide stable support for the flexible printed circuit board, so as to ensure the stable setting of the radiating stub 321 and ensure the stable transceiver of wireless signals by the radiating stub 321.

[0132] Among them, the radiating stub 321 can be a metal patch attached to the flexible printed circuit board, or the radiating stub 321 can also be a metal wire etched on the flexible printed circuit board.

[0133] Through the above settings, the flexible dielectric layer can provide stable support and a setting space for the radiating stub 321, while the elastic structure can provide stable support for the flexible dielectric layer to ensure that the radiating stub 321 can stably transceiver wireless signals, thereby ensuring the stable performance of the second antenna 320.

[0134] In some embodiments of the present application, as Figure 13 shown, the second antenna 320 is spaced apart on one side in the extending direction of the slot structure 312 through an antenna bracket 350, and the second antenna 320 is coplanar or non-coplanar with the slot structure 312. The feeding circuit 330 includes a feed source 331 and a power divider 333. The feed source 331 is electrically connected to the first antenna 310 and the second antenna 320 through the power divider 333 respectively to feed different excitation currents into the first antenna 310 and the second antenna 320.

[0135] Among them, the antenna bracket 350 can be made of the same material as the insulating dielectric layer in the resonant cavity 311. For example, the materials of the antenna bracket 350 and the insulating dielectric layer in the resonant cavity 311 are both FR4. The antenna bracket 350 can be connected to the outer wall surface of the resonant cavity 311. The antenna bracket 350 can be a boss structure or a hollow structure.

[0136] In some examples, the resonant cavity 311 is a plate-like structure with a thickness, and the slot structure 312 is opened on the first side wall arranged in the thickness direction of the plate-like structure. In this way, the coplanar setting of the second antenna 320 and the slot structure 312 means that the second antenna 320 is located in the plane where the first side wall is located. The non-coplanar setting of the second antenna 320 and the slot structure 312 means that the second antenna 320 is not located in the plane where the first side wall is located.

[0137] It can be understood that the power splitter 333 has one input end and two output ends. The feed source 331 is connected to the input end, and the two output ends are respectively connected to the first antenna 310 and the second antenna 320, so as to use the feed source 331 to feed the first antenna 310 and the second antenna 320 simultaneously through the power splitter 333. The setting of the power splitter 333 can split the same excitation current, and the power splitter 333 can be adjusted to feed different excitation currents into the first antenna 310 and the second antenna 320 respectively, so as to meet the requirements for the first antenna 310 and the second antenna 320 to receive and transmit wireless signals of different frequency bands.

[0138] Exemplarily, one output end of the power splitter 333 is directly electrically connected to the feeding port of the second antenna 320, and the other output end of the power splitter 333 can be connected to a probe. After the probe extends into the slot structure 312, the feeding of the first antenna 310 and the second antenna 320 is realized respectively.

[0139] Through the above setting, the antenna bracket 350 can support the second antenna 320, so that the second antenna 320 is stably arranged on one side in the extending direction of the slot structure 312, thereby ensuring that the second antenna 320 stably receives and transmits wireless signals, and thus ensuring the stable performance of the second antenna 320. Due to the setting of the power splitter 333, different magnitudes of excitation currents can be fed into the first antenna 310 and the second antenna 320 by using one feed source 331, so as to meet the requirements for the first antenna 310 and the second antenna 320 to receive and transmit wireless signals of different frequency bands respectively.

[0140] For a clearer understanding of the performance of the antenna module 300 in this application, refer to Figures 14 - 16 As shown, the antenna module 300 (single antenna module 300) without installation in this application is subjected to a simulation experiment, and at the same time, for the related technology.

[0141] Among them, as Figure 14 shown, it is a line graph of the reflection coefficient (S11) in the conventional solution (related technology), and five points are selected, namely the first point and the second point around 2.4 GHz, and the third point, the fourth point and the fifth point between 5 GHz and 7 GHz. And as Figure 15 shown, it is a line graph of the reflection coefficient (S11) in the solution of this application. Also corresponding to the related technology, five points are selected. By comparison, it can be seen that the first point and the second point around the low frequency band of 2.4 GHz remain basically unchanged before and after improvement, but the third point, the fourth point and the fifth point in the high frequency band range of 5.0 GHz - 7.0 GHz can obtain smaller decibel (dB) values, so a better reflection coefficient can be obtained, that is, better S parameters can be obtained.

[0142] And for Figure 16, which is a line chart comparing the passive efficiency of the antenna module 300 in this application and that in the conventional solution in the state of the antenna unit. It can be seen from the line chart that around the low-frequency band of 2.4 GHz, the passive efficiency of the solution in this application is basically close to that of the conventional solution. In the range of 5.0 GHz - 7.0 GHz, the passive efficiency of the antenna module 300 in this application is greater than that of the conventional solution. Therefore, the antenna module 300 in this application can have better passive performance.

[0143] The above is only the preferred embodiment of this application and is not intended to limit the protection scope of this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

1. An antenna module, comprising: A first antenna, which is a cavity slot antenna composed of a slot structure formed on a resonant cavity enclosed by a metal conductive housing and the resonant cavity; A second antenna disposed outside the resonant cavity, including at least one radiation branch; A feeding circuit for feeding an excitation current into the first antenna and the second antenna, so as to transmit and receive wireless signals of different frequency bands by using a radiation slot formed by the slot structure and the radiation branch.

2. The antenna module according to claim 1, wherein the feeding circuit comprises a feed source and a feeder line, the feeder line includes a first end and a second end which are oppositely arranged, the first end is connected to the feed source, and the second end is connected to a feeding port provided on the second antenna, wherein, The feed source is disposed inside the slot structure or the feed source extends into the slot structure through a probe; Or, There is a first positional relationship between at least one radiation branch of the second antenna and the slot structure. After the feeding circuit feeds an excitation current into the second antenna, the at least one radiation branch can perform coupled feeding to the slot structure.

3. The antenna module according to claim 2, wherein the resonant cavity is a plate structure with a thickness, and the slot structure is opened at the first edge along the extending direction of the first edge of the plate structure; The feed source or the second antenna is disposed at one end of the slot structure, and the first edge is the long side edge of the plate structure.

4. The antenna module according to claim 3, wherein the slot structure includes a third end and a fourth end disposed opposite to each other along the extending direction, a support structure is disposed at the third end or the fourth end, and a first surface of the support structure facing away from the plane where the slot structure is located is spaced apart from the plane where the slot structure is located by a first distance; the radiation branch of the second antenna is disposed on the first surface, and the feed source feeds an excitation current into the radiation branch disposed on the first surface through a feeder line, so as to transmit and receive wireless signals of a first frequency band by using the radiation branch.

5. The antenna module according to claim 4, wherein, The support structure is a boss structure disposed at the third end of the slot structure, the boss structure has the same material as an insulating dielectric layer filled in the resonant cavity, and the radiation branch of the second antenna is a metal patch laid on the first surface of the boss structure or a strip slot or a circular slot opened in the metal patch; Or, The support structure is a shrapnel structure disposed at the fourth end of the slot structure, the second antenna is spaced apart from the slot structure by a second distance through the shrapnel structure, and the second antenna includes a flexible dielectric layer and at least one radiation branch disposed on the flexible dielectric layer.

6. The antenna module according to claim 1, wherein the second antenna is spaced apart by an antenna bracket on one side in the extending direction of the slot structure, and the second antenna is coplanar or non-coplanar with the slot structure; The feeding circuit includes a feed source and a power divider, and the feed source is electrically connected to the first antenna and the second antenna respectively through the power divider to feed different excitation currents into the first antenna and the second antenna.

7. An electronic device, comprising: A device body, including a receiving groove enclosed by a metal housing; A display module, plugged at the notch of the receiving groove and having a first gap between the display module and the bottom of the receiving groove; An antenna module disposed in the first gap, the antenna module including: The first antenna, where the first antenna is a cavity slot antenna formed by a slot structure opened on a resonant cavity enclosed by a metal conductive housing and the resonant cavity; A second antenna disposed outside the resonant cavity, including at least one radiation branch; A feeding circuit for feeding an excitation current into the first antenna and the second antenna to utilize the radiation slot formed by the slot structure and the radiation branch to transmit and receive wireless signals of different frequency bands.

8. The electronic device according to claim 7, wherein, The antenna module is disposed on at least one edge of the display module, the display module includes a cover plate and a display panel stacked, the cover plate seals the notch of the accommodation groove, and there is an avoidance space communicating with the first gap between the display panel and the groove wall of the accommodation groove; The first antenna is disposed in the first gap, and the second antenna is located in the avoidance space.

9. The electronic device according to claim 8, wherein, The resonant cavity is a plate structure with a thickness, the slot structure is opened at the first edge along the extending direction of the first edge of the plate structure, the slot structure faces the avoidance space, the resonant cavity further includes a second edge opposite to the first edge, and the second edge is disposed in the first gap between the display panel and the bottom of the accommodation groove; The spacing distance between the slot structure and the display panel is not less than a first distance; and / or, The spacing distance between the slot structure and the groove wall of the accommodation groove is not less than a second distance.

10. The electronic device according to any one of claims 7-9, wherein, The device body includes a display part formed by a housing and the display module and a main body part formed by the housing and an input device, the display part is rotatably connected to the main body part, and the antenna module is disposed in an accommodation groove formed by the display part and on an edge of the display part for realizing the rotational connection with the main body part; and / or, When the display part and the main body part are at a first angle, the spacing distance between the slot structure and the main body part is not less than a third distance.

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