Antenna module and electronic device

Abstract

The application discloses an antenna module and an electronic device, and belongs to the technical field of communication. The antenna module comprises a first radiator, a metal floor and a feed source; the feed source is electrically connected with the first radiator; a first gap is formed between the metal floor and the first radiator; a first slot is formed in the metal floor; wherein the feed source is used for exciting a first current on the first radiator and exciting a first magnetic current at the first slot; under the action of the first magnetic current, a second current is formed on opposite sides of the metal floor; and the first current and the second current are consistent in phase.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to an antenna module and an electronic device. Background Technology

[0002] With the trend of miniaturization and thinning of mobile phones and other electronic devices, the antenna radiation environment on electronic devices has been greatly compressed. Without changing the antenna scheme, key performance characteristics such as antenna bandwidth and antenna efficiency will gradually decline.

[0003] In related technologies, to improve antenna performance, measures such as adding parasitic stubs or reusing stubs to construct high-radiation-efficiency modes are commonly used to optimize antenna performance. However, with the advent of New Radio (NR) 5th generation (5G)... th More and more communication functions, such as Generation 5G communication systems, WiFi Multi-Input Multi-Output (MIMO), Near Field Communication (NFC), and satellite communication, need to be integrated into electronic devices. This greatly limits the space available for antenna design, making it impossible to implement measures such as adding parasitic branches or reusing branches to construct high-radiation-efficiency modes.

[0004] Therefore, measures to enhance antenna performance in related technologies require space for antenna layout, thus limiting their application range. Summary of the Invention

[0005] The purpose of this application is to provide an antenna module and electronic device that can enhance the antenna performance of the first radiator by exciting an equivalent magnetic current at the slot by slotting a groove in a metal floor. This magnetic current forms a current in phase with the first radiator at the edge of the metal floor, which can enhance the antenna performance of the first radiator without occupying antenna layout space and has a wide range of applications.

[0006] In a first aspect, embodiments of this application provide an antenna module, which includes: a first radiator, a metal ground plane, and a feed source;

[0007] The feed source is electrically connected to the first radiator;

[0008] There is a first gap between the metal floor and the first radiator;

[0009] The metal floor has a first groove.

[0010] The feed is used for exciting a first current on the first radiator and exciting a first magnetic current at the first slot, and the metal floor forms a second current on opposite sides of the metal floor under the action of the first magnetic current, and the first current is consistent in phase with the second current.

[0011] In a second aspect, an electronic device is provided, which includes the antenna module as described in the first aspect.

[0012] In the embodiments of the present application, a slot is formed on the metal floor, and an equivalent magnetic current is excited at the slot to enhance the antenna performance of the first radiator by forming a current on the edge of the metal floor that is consistent in phase with the first radiator. Compared with the related art, which needs to increase a parasitic branch in the antenna layout space or reuse the branch to construct a high-radiation-efficiency mode, any grounded metal plate structure can be used to construct the metal floor, and a slot is formed on the metal floor to enhance the antenna performance of the first radiator located on one side of the metal floor. In this way, the metal floor does not need to occupy the antenna layout space, and has a wide range of application scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic diagram of an antenna module provided by the embodiments of the present application;

[0014] Figure 2a is a structural schematic diagram of an antenna module provided by the embodiments of the present application;

[0015] Figure 2b is a structural schematic diagram of an antenna module provided by the embodiments of the present application;

[0016] Figure 3 is a structural schematic diagram of an antenna module provided by the embodiments of the present application;

[0017] Figure 4a is a schematic diagram of a first current excited on a first radiator;

[0018] Figure 4b is a schematic diagram of a first magnetic current excited at a first slot and a second current formed on the edge of a metal floor;

[0019] Figure 4c is a schematic diagram of the current distribution of an antenna module provided by the embodiments of the present application;

[0020] Figure 5a is a schematic diagram of current distribution simulation when a first radiator is working;

[0021] Figure 5b is a schematic diagram of current distribution simulation when a first slot is working;

[0022] Figure 5c is a current distribution simulation schematic diagram of the antenna module provided by the embodiment of the present application;

[0023] Figure 5d is Figure 3 the simulation S parameter curve diagram of the antenna module, the IFA antenna in the related art and the slot antenna in the related art shown in the figure;

[0024] Figure 5e is Figure 3 the simulation Smith curve diagram of the antenna module, the IFA antenna in the related art and the slot antenna in the related art shown in the figure;

[0025] Figure 5f is Figure 3 the simulation efficiency curve diagram of the antenna module, the IFA antenna in the related art and the slot antenna in the related art shown in the figure;

[0026] Figure 6 is a fourth structural schematic diagram of the antenna module provided by the embodiment of the present application;

[0027] Figure 7 is Figure 6 the distribution position schematic diagram of each structure or component in the antenna module shown in the figure;

[0028] Figure 8a is Figure 6 the simulation S parameter curve diagram of the antenna module shown in the figure under different electrical parameters of the tuning circuit;

[0029] Figure 8b is Figure 6 the simulation efficiency curve diagram of the antenna module shown in the figure under different electrical parameters of the tuning circuit;

[0030] Figure 9 is a fifth structural schematic diagram of the antenna module provided by the embodiment of the present application;

[0031] Figure 10a is Figure 9 the schematic diagram of the first slot in the antenna module shown in the figure;

[0032] Figure 10b is Figure 9 the schematic diagram of the second slot in the antenna module shown in the figure;

[0033] Figure 11 is a distribution position schematic diagram of the radiator and the slot in the electronic device provided by the embodiment of the present application. DETAILED DESCRIPTION

[0034] With reference to the drawings and the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly described. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art are within the scope of protection of the present application.

[0035] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of a kind and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0036] As an important selling point of electronic devices such as mobile phones, achieving stable and high-speed communication experience has always been the design pursuit of electronic devices such as mobile phones. The hardware modules of electronic devices mainly include a Modem, a radio frequency module, and an antenna module. Among them, the Modem is limited by protocol specifications and device capabilities, and the radio frequency module is limited by regulatory requirements and radio frequency module performance, so it is difficult to improve performance through back-end design. As the front end of the communication module, the improvement of the antenna performance will directly affect the communication performance of the terminal device.

[0037] In related technologies, in order to improve the performance of the antenna, measures such as increasing parasitic branches or multiplexing branches to construct high-radiation-efficiency modes are usually used to optimize the performance of the antenna. The measures to enhance the performance of the antenna have the problem of limited use range due to the need to occupy the antenna layout space of the newly added parasitic branches or multiplexing branches.

[0038] However, in the embodiments of the present application, instead of improving the radiation capability of the antenna body, a slot is formed on the metal floor to excite the whole metal floor as a larger caliber radiator to improve the antenna radiation efficiency. Compared with the parasitic branches or multiplexing branches newly added in the existing antenna layout space in related technologies, the metal floor does not need to occupy the existing antenna layout space, and has a wide range of application scenarios.

[0039] The antenna module and the electronic device provided by the embodiments of the present application will be described in detail below in combination with the drawings and specific embodiments and application scenarios.

[0040] Referring to Figure 1The antenna module provided by the embodiment of the application comprises a first radiator 10, a metal floor 20 and a feed source 30.

[0041] The feed source 30 is electrically connected with the first radiator 10.

[0042] The metal floor 20 has a first gap 40 with the first radiator 10.

[0043] The metal floor 20 is provided with a first slot 21.

[0044] The feed source 30 is configured to excite a first current I1 on the first radiator 10 and a first magnetic current L1 at the first slot 21, the metal floor 20 is configured to form a second current I2 on opposite sides of the metal floor 20 under the action of the first magnetic current L1, and the first current I1 and the second current I2 are in phase.

[0045] It should be noted that the directions of the first current I1 and the second current I2 can be the same or different, and when the directions of the first current I1 and the second current I2 are the same, the second current I2 is in phase with the first current I1 and is superimposed on the first current I1, so as to enhance the radiation efficiency of the first radiator 10; when the directions of the first current I1 and the second current I2 are different, the radiation pattern or polarization characteristics of the first radiator 10 can be changed, so as to optimize the radiation pattern or polarization characteristics of the first radiator 10.

[0046] For the convenience of description, in the embodiment of the application, the case that the directions of the first current I1 and the second current I2 are the same is usually taken as an example for illustration, and this does not constitute a specific limitation.

[0047] In some embodiments, as shown in Figure 4b or Figure 4c The second current I2 is distributed on the left and right sides of the metal floor 20, and at this time, the first radiator 10 can be located on the left or right side of the metal floor 20.

[0048] In other embodiments, as shown in Figure 1 , Figure 2a or Figure 2b The second current I2 can be distributed on the upper and lower sides of the metal floor 20, and at this time, the first radiator 10 can be located on the upper or lower side of the metal floor 20.

[0049] For the convenience of description, in the embodiment of the application, the case that the second current I2 is distributed on the left and right sides of the metal floor 20 and the first radiator 10 can be located on the right side of the metal floor 20 is usually taken as an example for illustration, and this constitutes a specific limitation.

[0050] In some embodiments, the first radiator 10 can be in the form of a frame antenna or a patch antenna, and for ease of illustration, the first radiator 10 is taken as an example of a frame antenna in the embodiments of the present application, which does not constitute a specific limitation.

[0051] It should be noted that when the first radiator 10 is a frame antenna, the feed source 30 is arranged on the mainboard in the electronic device, rather than being arranged outside the frame of the electronic device, as shown in FIG. 1B. Figure 1 Figure 1 This is only an example.

[0052] In some embodiments, the metal floor 20 can represent any grounded metal plate structure, such as a metal middle frame, a metal back cover, a metal bracket, a metal layer under the screen, etc. on an electronic device, and for ease of illustration, the metal floor 20 is taken as an example of a metal middle frame in the embodiments of the present application, which does not constitute a specific limitation.

[0053] In some embodiments, the metal floor 20 and the first radiator 10 can be arranged side by side, at which time the first radiator 10 and the metal floor 20 are located in the same plane, and the first radiator 10 is located on one side of the metal floor 20.

[0054] For example, as shown in FIG. 1A, the metal floor 20 is a metal middle frame on an electronic device, and the first radiator 10 is a frame antenna arranged on the metal frame of the electronic device, at which time the first gap 40 is formed by opening a through hole in the region of the metal middle frame facing the metal frame, so that the side edge of the first radiator 10 does not contact the metal floor 20. Figure 3 In other embodiments, the metal floor 20 and the first radiator 10 can be located in different planes, for example, the first radiator 10 and the metal floor 20 are arranged in layers, or the first radiator 10 and the metal floor 20 are located in different planes, and the first radiator 10 and the metal floor 20 are arranged in a staggered manner along a direction perpendicular to the metal floor 20.

[0055] In some embodiments, the antenna form of the first radiator 10 can include at least one of an Inverted-F Antenna (IFA), a Monopole antenna, a Dipole antenna, and a T antenna.

[0056] In the case where the first radiator 10 includes an IFA antenna, the first end of the first radiator 10 is suspended and the second end is grounded, and the second end of the first radiator 10 faces away from the first end of the first slot 21.

[0057]

[0058] ​​At this time, the feed source 30 is electrically connected to the first radiating body 10 at a position between the first end and the second end of the first radiating body 10, and the electric field intensity region of the first radiating body 10 is located near the first end of the first radiating body 10, so that the opening end of the first slot 21 is located near the first end of the first radiating body 10, and the first end of the first slot 21 is located at the position of the electric field intensity region of the first radiating body 10.

[0059] In some embodiments, the typical electrical length of the IFA antenna is 0.25λ+n×0.5λ, where n is a natural number and λ represents the wavelength corresponding to the operating frequency of the first radiating body 10.

[0060] In some embodiments, the typical electrical length of the monopole antenna is 0.25λ+n×0.5λ, where n is a natural number and λ represents the wavelength corresponding to the operating frequency of the first radiating body 10.

[0061] In some embodiments, the typical electrical length of the dipole antenna is (n+1)×0.5λ, where n is a natural number and λ represents the wavelength corresponding to the operating frequency of the first radiating body 10.

[0062] In some embodiments, the typical electrical length of the T antenna is (n+1)×0.5λ, where n is a natural number and λ represents the wavelength corresponding to the operating frequency of the first radiating body 10.

[0063] In some embodiments, the metal floor 20 with the first slot 21 can form a slot antenna with one open end, and the typical electrical length of the slot antenna is 0.25λ+n×0.5λ, i.e. the typical electrical length from the first end of the first slot 21 to the second end of the first slot 21 is 0.25λ+n×0.5λ, where n is a natural number and λ represents the wavelength corresponding to the operating frequency of the slot antenna.

[0064] It should be noted that the first slot 21 has the same or close resonant point as the operating mode of the first radiating body 10, so that during operation, the second current I2 excited by the first slot 21 and the first current I1 excited by the first radiating body 10 have the same phase.

[0065] In some embodiments, the phase consistency of the first current I1 and the second current I2 can mean that the phase of the first current I1 and the phase of the second current I2 are the same, or the phase difference between the first current I1 and the second current I2 is small, such as less than ±45°.

[0066] In some embodiments, in order to achieve the phase consistency of the first current I1 and the second current I2, the lengths of the first slot 21 and the first radiating body 10 can be designed to have the same or close resonant frequencies.

[0067] For example, the resonant frequency corresponding to the working mode of the first radiating body 10 excited by the feed source 30 is a first resonant frequency;

[0068] The resonant frequency corresponding to the working mode of the first slot 21 excited by the feed source 30 is a second resonant frequency;

[0069] The difference between the first resonant frequency and the second resonant frequency is less than or equal to a preset threshold value.

[0070] The preset threshold value can be 0, or the preset threshold value can be a frequency difference value that is small or even negligible, such as 1 Hz, 5 Hz, etc. The value of the preset threshold value is not limited here.

[0071] In this way, when the feed source 30 feeds, the frequency of the excitation signal on the first radiating body 10 is the same as or close to the frequency of the first magnetic current L1 formed at the first slot 21, so that the phase of the first current I1 on the first radiating body 10 is consistent with the phase of the second current I2 formed on the edge of the metal floor 20 based on the action of the first magnetic current L1.

[0072] In some embodiments, the feed source can only feed the first radiating body 10 to excite the first current I1 on the first radiating body 10, and the first slot 21 generates the first magnetic current L1 by coupling with the first radiating body 10.

[0073] For example, as shown in Figure 3 The first end of the first slot 21 is located at the position of the electric field strong area of the first radiating body 10, and the first end of the first slot 21 penetrates the first side edge 22 of the metal floor 20 to communicate with the first gap 40, wherein the first side edge 22 is the side edge of the metal floor 20 facing the first radiating body 10.

[0074] The electric field strong area of the first radiating body 10 can be understood as the first current excited on the first radiating body 10 when the feed source 30 feeds the first radiating body 10, and based on the action of the first current, an electric field will be generated near the first radiating body 10. At this time, the electric field strong area of the first radiating body 10 can be understood as the area where the electric field near the first radiating body 10 is the strongest, or the area where the electric field intensity is greater than a preset field intensity.

[0075] In some embodiments, as shown in Figure 3 Taking the first radiating body 10 as an IFA antenna, at this time, the electric field strong area of the first radiating body 10 is the first end of the first radiating body 10, and the second end of the first radiating body 10 is grounded.

[0076] Of course, the first radiator 10 can be other forms of antennas other than the IFA antenna, in which case the electric field intensity region of the first radiator 10 will also change accordingly, and the specific position of the electric field intensity region of the first radiator 10 is not limited herein.

[0077] In the embodiment, the feed source 30 is electrically connected to the first radiator 10, and the opening end of the first slot 21 is located in the electric field intensity region of the first radiator 10, so that the first slot 21 can generate the first magnetic current L1 by coupling with the first radiator 10.

[0078] As an optional embodiment, as shown in Figure 3 The first slot 21 includes a first segment AB and a second segment BC, and the first end of the first slot 21 is located at one end of the first segment AB facing away from the second segment BC.

[0079] The first segment AB and the second segment BC are in communication, and the first segment AB extends along a first direction, i.e., the X-axis direction, and the second segment BC extends along a second direction, i.e., the Y-axis direction; the first direction is the direction extending from the first side edge 22 to the middle region of the metal floor 20, and the second direction is the same as the extending direction of the first radiator 10.

[0080] Among them, Figure 3 The first current I1 in the antenna module as shown in Figure 4a The first magnetic current L1 and the second current I2 as shown in Figure 4b So, as shown in Figure 4c Since the second current I2 is in phase with the first current I1, by combining the operating modes of the first current I1 and the second current I2, the effect of enhancing the antenna performance of the first radiator 10 can be achieved.

[0081] In the embodiment, the first segment AB and the second segment BC of the first slot 21 are connected end to end to form an L-shaped structure, the first segment AB can make the first slot 21 extend to the middle region of the metal floor 20, and the second segment BC is the same as the extending direction of the first radiator 10, which can enhance the coupling strength between the first slot 21 and the first radiator 10, thereby improving the degree of enhancing the antenna performance of the first radiator 10 by the first slot 21.

[0082] It should be noted that, in the embodiment of the present application, the first slot 21 is taken as an example to illustrate the first segment AB and the second segment BC in an L-shaped structure, but the shape and extending direction of the first slot 21 can be other structures, such as extending along a curve or any other arbitrary shape, and the shape and extending direction of the first slot 21 are not limited herein.

[0083] In some embodiments, the feed source 30 can feed the first slot 21 to excite the first magnetic current L1 at the first slot 21.

[0084] As an optional embodiment, as shown in Figure 2a the feed source 30 comprises a first sub-feed source 31 and a second sub-feed source 32, the first sub-feed source 31 is electrically connected with the first radiator 10, and the second sub-feed source 32 is electrically connected with the sidewall of the first slot 21.

[0085] Alternatively, as shown in Figure 2b the antenna module further comprises a power divider 50, and the feed source 30 is electrically connected with the first radiator 10 and the sidewall of the first slot 21 through the power divider 50.

[0086] In some embodiments, when the feed source 30 comprises the first sub-feed source 31 and the second sub-feed source 32, the first sub-feed source 31 can be used to excite the first electric current I1 on the first radiator 10, and the second sub-feed source 32 can be used to excite the first magnetic current L1 at the first slot 21. The frequency and phase of the first electric current I1 can be made the same as those of the first magnetic current L1 by controlling the frequency and phase of the first sub-feed source 31 and the second sub-feed source 32 to be the same. In this way, the frequency and phase of the first electric current I1 can be made the same as those of the second electric current I2 generated based on the first magnetic current L1, so that the first electric current I1 on the first radiator 10 can be enhanced by the second electric current I2, thereby enhancing the antenna performance of the first radiator 10.

[0087] In some other embodiments, as shown in Figure 2b when the feed source 30 is electrically connected with the first radiator 10 and the sidewall of the first slot 21 through the power divider 50, the first radiator 10 and the first slot 21 can share the same feed source 30 for feeding, and the feeding signal of the feed source 30 can be divided into two parts by the power divider 50, one part is transmitted to the first radiator 10 to excite the first electric current I1 on the first radiator 10, and the other part is transmitted to the sidewall of the first slot 21 to excite the first magnetic current L1 at the first slot 21, and then a second electric current I2 is generated at the edge of the metal floor 20 based on the action of the first magnetic current L1. At this time, since the first electric current I1 and the second electric current I2 are excited by the same feed source 30, the phase of the first electric current I1 and the second electric current I2 is consistent.

[0088] In this embodiment, the first magnetic current L1 can be excited at the first slot 21 by feeding the sidewall of the first slot 21 with the feed source.

[0089] As an optional embodiment, as shown in Figure 3As shown, the antenna module provided by the embodiment of the present application further includes

[0090] The matching circuit 60 is electrically connected to the first radiator 10 through the feed source 30.

[0091] The structure and working principle of the matching circuit 60 are the same as those of the matching circuit in the related art, and thus will not be described herein.

[0092] In the embodiment, the matching circuit 60 can realize the impedance matching function of the antenna, or the first radiator 10 can be tuned through the matching circuit 60 to work in the required frequency range.

[0093] It is worth mentioning that, as shown in Figure 3 the antenna module, through the feeding of the feed source 30, the first current I1 can be excited on the first radiator 10, and the first magnetic current L1 can be excited at the first slot 21. Based on the action of the first magnetic current L1, the opposite two sides of the metal floor 20 are distributed with the second current I2 which has the same phase and propagation direction as the first current I1. In this way, the antenna mode of the first radiator 10 and the first slot 21 can be superimposed to form an electromagnetic hybrid mode, and the current on the metal floor 20 can be fully excited without increasing the antenna area, so as to utilize the space of the metal floor 20 to improve the impedance bandwidth and the antenna efficiency.

[0094] For example, as shown in Figure 5a , Figure 5b , Figure 5c , Figure 5d , Figure 5e and Figure 5f , wherein, Figure 5a is a current distribution simulation schematic diagram when the first radiator works, that is, the current distribution when only the first radiator 10 works without the first slot 21. At this time, the current is almost entirely distributed around the first radiator 10, and there is almost no current distribution on the metal floor 20; Figure 5b is a current distribution simulation schematic diagram when the first slot 21 works, that is, the current distribution when only the first slot works without the first radiator 10. At this time, the current is mainly distributed on the side of the first slot 21 away from the first radiator 10 and the outer edge of the metal floor 20. At this time, the current on the metal floor 20 is partially excited; Figure 5cis a current distribution simulation schematic diagram of the antenna module provided by the embodiment of the present application, that is, the current distribution when the first radiator 10 and the first slot 21 both work, at this time, the current distribution on the antenna module is controlled in the superposition state when the first radiator 10 and the first slot 21 work in the same direction, at this time, the antenna module works in the magneto-electric hybrid mode, the first radiator 10 and the metal ground plate 20 are both fully excited, and the radiation efficiency corresponding to the radiator is improved. That is Figure 5a The current distribution shown in Figure 5b is superimposed on the current distribution shown in Figure 5c to obtain the current distribution shown in

[0095] Figure 5d The simulation S parameter curve diagrams of the antenna module shown in Figure 3 , the IFA antenna in the related art and the slot antenna in the related art are shown. Based on Figure 5d It can be seen that compared with the slot antenna and the IFA antenna in the related art, the antenna module provided by the embodiment of the present application corresponds to a magneto-electric integrated antenna, and due to the introduction of the magneto-electric hybrid mode, an impedance circle is added on the impedance, as shown in Figure 5e , this impedance characteristic is beneficial to obtain a wideband performance, therefore, the bandwidth of the magneto-electric integrated antenna provided by the embodiment of the present application is greatly optimized.

[0096] Figure 5f The simulation efficiency curve diagrams of the antenna module shown in Figure 3 , the IFA antenna in the related art and the slot antenna in the related art are shown. Based on Figure 5f It can be seen that the peak efficiency of the magneto-electric integrated antenna constructed in the embodiment of the present application is obviously improved compared with the slot antenna and the IFA antenna in the related art.

[0097] As shown in the following Table 1, the simulation passive performance parameters of the magneto-electric integrated antenna constructed in the embodiment of the present application, the slot antenna in the related art and the IFA antenna in the related art are shown:

[0098] Table 1

[0099] Antenna form -6dB impedance bandwidth Antenna efficiency (0.8-0.9G) IFA antenna 40MHz -2.89dB Slot antenna 80MHz -1.05dB Magnetoelectrically integrated antenna 160MHz -0.35dB

[0100] As shown in the above Table 1, the magneto-electric integrated antenna constructed in the embodiment of the present application has improved in the impedance bandwidth and the antenna efficiency compared with the slot antenna and the IFA antenna in the related art.

[0101] As an optional implementation, as shown in Figure 6 , the antenna module in the embodiment of the present application further includes: a first tuning circuit 71 and a second tuning circuit 72;

[0102] The first tuning circuit 71 is electrically connected with the first radiator 10;

[0103] The second tuning circuit 72 is electrically connected to the side wall of the first slot 21;

[0104] The electrical parameters of the first tuning circuit 71 and the second tuning circuit 72 are adjustable, and the electrical parameters include at least one of capacitance, inductance and resistance.

[0105] In some implementations, such as Figure 7 As shown, the first radiator 10 can be disposed on the metal frame of the electronic device, and the metal floor 20 can be disposed on the metal middle frame of the electronic device. That is, the first slot 21 is disposed on the metal middle frame, and the feed 30, the matching circuit 60, the first tuning circuit 71 and the second tuning circuit 72 can be disposed on the circuit board 100. The feed 30 and the matching circuit 60 can be electrically connected to the first radiator 10 through the electrical connection structure such as springs, wires, and contacts, the first tuning circuit 71 can be electrically connected to the first radiator 10, and the second tuning circuit 72 can be electrically connected to the side wall of the first slot 21.

[0106] Of course, at least one of the feed source 30, matching circuit 60, first tuning circuit 71, and second tuning circuit 72 can also be set on other circuit hardware structures such as flexible printed circuit (FPC). Figure 7 This is merely one possible implementation and does not constitute a specific limitation.

[0107] In this embodiment, the tuning function of the first radiator 10 can be realized by adjusting the electrical parameters of the first tuning circuit 71, and the tuning function of the first slot 21 can be realized by adjusting the electrical parameters of the second tuning circuit 72. In this way, the antenna module can achieve aperture tuning function through the first tuning circuit 71 and the second tuning circuit 72, and the high radiation efficiency and wide bandwidth of the antenna module can also be maintained.

[0108] For example, taking a low-frequency antenna as an example, the first tuning circuit 71 and the second tuning circuit 72 can be designed to operate in states such as loaded capacitor, inductor, or floating. By adjusting the operating states of the first tuning circuit 71 and the second tuning circuit 72, the antenna aperture can cover from low frequency to high frequency.

[0109] It should be noted that the electrical parameters of the first tuning circuit 71 and the second tuning circuit 72 are adjusted synchronously so that the resonant frequency of the first radiator 10 is consistent with the resonant frequency of the first slot 21.

[0110] Figure 8a It shows Figure 6 The simulated S-parameter curves of the antenna module under different electrical parameters in the tuning circuits, namely the first tuning circuit 71 and the second tuning circuit 72, are shown below.Figure 8a It can be seen from the simulation efficiency curves of the antenna module in different frequency bands that the antenna module has a wide bandwidth in each frequency band. Figure 6 It can be seen from the simulation efficiency curves of the antenna module in different frequency bands that the antenna module has a wide bandwidth in each frequency band.

[0111] Figure 8b It can be seen from the simulation efficiency curves of the antenna module in different frequency bands that the antenna module has a wide bandwidth in each frequency band. Figure 6 It can be seen from the simulation efficiency curves of the antenna module in different frequency bands that the antenna module has a wide bandwidth in each frequency band. Figure 8b It can be seen from the simulation efficiency curves of the antenna module in different frequency bands that the antenna module has a wide bandwidth in each frequency band. Figure 6 It can be seen from the simulation efficiency curves of the antenna module in different frequency bands that the antenna module has a wide bandwidth in each frequency band.

[0112] As an optional embodiment, as shown in Figure 9 、 Figure 10a and Figure 10b Further comprising:

[0113] The first end of the first radiator 10 is arranged opposite to the second end of the second radiator 80, and there is a gap O between the first end of the first radiator 10 and the second end of the second radiator 80.

[0114] There is a second gap 90 between the metal floor 20 and the second radiator 80.

[0115] The second slot 23 is formed in the metal floor 20.

[0116] When the feed source 30 works, the third current I3 is coupled out on the second radiator 80, and the second magnetic current L2 is excited at the second slot 23. The fourth current I4 is formed on the opposite two sides of the metal floor 20 under the action of the second magnetic current L2. The third current I3 and the fourth current I4 are consistent in phase and same in direction.

[0117] It should be noted that the second radiator 80 is coupled with the first radiator 10 through the gap O, so that when the feed source 30 works, the second radiator 80 couples out the third current I3 based on the coupling with the first radiator 10, and the second magnetic current L2 on the second slot 23 is generated in the same way as the first magnetic current L1 on the first slot 21 in the foregoing embodiment.

[0118] For example, the first end of the second slot 23 is located at the position of the electric field intensity area of the second radiator 80, and the first end of the second slot 23 penetrates through the second side edge (the same side edge as the first side edge 22) of the metal floor 20 to communicate with the second gap 90, wherein the second side edge is the side edge of the metal floor 20 facing the second radiator 80.

[0119] It should be noted that, Figure 9In the embodiment shown, the second radiator 80 and the first radiator 10 extend in the same direction, and both are located on the same side of the metal floor 20. In this case, the first side edge 22 and the second side edge are the same side edge of the metal floor 20. In addition, Figure 9 In the embodiment shown, the end of the second radiator 80 opposite the first radiator 10 is grounded, so that the electric field intensity region of the second radiator 80 is the end of the second radiator 80 facing the first radiator 10, i.e., the electric field intensity region of the first radiator 10 and the electric field intensity region of the second radiator 80 are both located at the break O.

[0120] For another example, the feed source 30 is electrically connected to the sidewall of the second slot 23 to excite a second magnetic current L2 on the second slot 23 that is consistent with the resonant frequency of the second radiator 80, thereby generating a fourth current I4 on the edge of the metal floor 20 that is consistent in direction and phase with the third current I3.

[0121] In some embodiments, the resonant frequency of the first radiator 10 is different from the resonant frequency of the second radiator 80, and the resonant frequency of the first radiator 10 is consistent with the resonant frequency of the first slot 21, and the resonant frequency of the second radiator 80 is consistent with the resonant frequency of the second slot 23. In this way, a different magnetic-electric hybrid mode from the resonant frequency of the first radiator 10 can be constructed by the second radiator 80 and the second slot 23.

[0122] For example, as shown in FIG. 1, the length of the second radiator 80 is shorter than the length of the first radiator 10, and the length of the second slot 23 is shorter than the length of the first slot 21, so that the resonant frequency of the second radiator 80 and the second slot 23 remains consistent and is higher than the resonant frequency of the first radiator 10 and the first slot 21. In this way, as shown in FIG. 2, when the antenna module operates at a low frequency, the size of the first radiator 10 on the lower side is longer as a low-frequency frame branch that extends from the break O to the first slot 21 on the lower side as a low-frequency slot branch, at which time the low-frequency slot branch and the low-frequency frame branch jointly excite a low-frequency magnetic-electric hybrid mode. Figure 9 Figure 10a For example, as shown in FIG. 1, the length of the second radiator 80 is shorter than the length of the first radiator 10, and the length of the second slot 23 is shorter than the length of the first slot 21, so that the resonant frequency of the second radiator 80 and the second slot 23 remains consistent and is higher than the resonant frequency of the first radiator 10 and the first slot 21. In this way, as shown in FIG. 2, when the antenna module operates at a low frequency, the size of the first radiator 10 on the lower side is longer as a low-frequency frame branch that extends from the break O to the first slot 21 on the lower side as a low-frequency slot branch, at which time the low-frequency slot branch and the low-frequency frame branch jointly excite a low-frequency magnetic-electric hybrid mode. Figure 10b For example, as shown in FIG. 1, the length of the second radiator 80 is shorter than the length of the first radiator 10, and the length of the second slot 23 is shorter than the length of the first slot 21, so that the resonant frequency of the second radiator 80 and the second slot 23 remains consistent and is higher than the resonant frequency of the first radiator 10 and the first slot 21. In this way, as shown in FIG. 2, when the antenna module operates at a low frequency, the size of the first radiator 10 on the lower side is longer as a low-frequency frame branch that extends from the break O to the first slot 21 on the lower side as a low-frequency slot branch, at which time the low-frequency slot branch and the low-frequency frame branch jointly excite a low-frequency magnetic-electric hybrid mode.

[0123] In the embodiment shown, the second radiator 80 and the second slot 23 are added to construct multiple resonant frequency magnetic-electric hybrid modes, thereby enabling the antenna module to achieve the effects of multiple frequency bands, wideband, and high antenna efficiency.

[0124] In some embodiments, as shown in FIG. 1,​Figure 9 As shown, when the electric field intensity region of the first radiator 10 and the electric field intensity region of the second radiator 80 are both located at the break gap O, the first end of the first slot 21, the first end of the second slot 23 and the break gap O are arranged opposite and communicate with each other.

[0125] In some embodiments, the first radiator 10 and the second radiator 80 are located on the same side of the metal floor 20.

[0126] As shown, the second slot 23 includes a third segment DE and a fourth segment EF, and the first end of the second slot 23 is located at one end of the third segment DE facing away from the fourth segment EF. Figure 10b

[0127] The third segment DE communicates with the fourth segment EF, and the third segment DE extends along a first direction, i.e., the X-axis direction in the coordinate system, and the fourth segment EF extends along a third direction, i.e., the -Y-axis direction in the coordinate system; the first direction is the direction extending from the first side edge 22 to the middle region of the metal floor 20, and the third direction is the same as the extending direction of the second radiator 80. Figure 10b Figure 10b The first segment AB of the first slot 21 at least partially overlaps the third segment DE of the second slot 23, and the fourth segment EF is opposite to the extending direction of the second segment BC of the first slot 21.

[0128] It should be noted that the first radiator 10 and the second radiator 80 are located on the same side of the metal floor 20, so that the first radiator 10 and the second radiator 80 are located on opposite sides of the break gap O respectively, and the electric field intensity regions of the first radiator 10 and the second radiator 80 have an overlapping region. By at least partially overlapping the first segment AB and the third segment DE, the opening ends of the first slot 21 and the second slot 23 can be located in the common electric field intensity region of the first radiator 10 and the second radiator 80, for example, the first end of the first slot 21 and the first end of the second slot 23 are arranged opposite and communicate with each other, and the break gap O is the common electric field intensity region of the first radiator 10 and the second radiator 80.

[0129] In this embodiment, the third segment DE and the fourth segment EF of the second slot 23 are connected end to end to form an L-shaped structure, and the third segment DE can extend the second slot 23 to the middle region of the metal floor 20, and the fourth segment EF is the same as the extending direction of the second radiator 80, which can enhance the coupling strength between the second slot 23 and the second radiator 80, thereby improving the antenna performance enhancement degree of the second slot 23 to the second radiator 80.

[0130] In this embodiment, the third segment DE and the fourth segment EF of the second slot 23 are connected end to end to form an L-shaped structure, and the third segment DE can extend the second slot 23 to the middle region of the metal floor 20, and the fourth segment EF is the same as the extending direction of the second radiator 80, which can enhance the coupling strength between the second slot 23 and the second radiator 80, thereby improving the antenna performance enhancement degree of the second slot 23 to the second radiator 80.

[0131] ​​In some embodiments, the fourth segment EF extends in a direction opposite to the extending direction of the second segment BC of the first slot 21, that is, the fourth segment EF extends in a direction opposite to the direction in which the second radiator 80 is located, and the second segment BC extends in a direction toward the first radiator 10.

[0132] For example, as shown in FIG. 1, the first radiator 10 is located on the lower side of the break O, and the second radiator 80 is located on the upper side of the break O. Figure 9

[0133] The second segment BC extends in the same direction as the first radiator 10, and at least part of the second segment BC is located on the lower side of the break O.

[0134] The fourth segment EF extends in the same direction as the second radiator 80, and at least part of the fourth segment EF is located on the upper side of the break O.

[0135] In this way, the second segment BC can be close to the first radiator 10 to enhance the coupling strength between the first slot 21 and the first radiator 10, thereby enhancing the strength of the first magnetic current L1 and the second electric current I2, and improving the degree of performance improvement of the first slot 21 on the first radiator 10. In addition, the fourth segment EF can be close to the second radiator 80 to enhance the coupling strength between the second slot 23 and the second radiator 80, thereby enhancing the strength of the second magnetic current L2 and the fourth electric current I4, and improving the degree of performance improvement of the second slot 23 on the second radiator 80.

[0136] In the embodiments of the present application, a slot is formed in the metal floor, and an equivalent magnetic current is excited at the slot to enhance the antenna performance of the first radiator by using the magnetic current to form an electric current on the edge of the metal floor, which is consistent with the phase of the first radiator. Compared with the related art, the metal floor can be formed by using any grounded metal plate structure, and the slot is formed in the metal floor to enhance the antenna performance of the first radiator located on one side of the metal floor. In this way, the metal floor does not need to occupy the antenna layout space, and has a wide application scenario.

[0137] The embodiments of the present application also provide an electronic device, which includes any antenna module provided by the foregoing embodiments of the present application.

[0138] ​In some embodiments, the electronic device in this application can be a mobile phone, tablet computer, laptop computer, handheld computer, vehicle-mounted electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application does not specifically limit the device.

[0139] In the antenna module of this application embodiment, a slot antenna can be constructed using a grounded metal plate inside the electronic device, thereby enhancing the antenna performance of the first radiator, while the grounded metal plate does not occupy the limited antenna layout space on the electronic device.

[0140] In some embodiments, the first radiator includes at least one of the following: a frame antenna disposed on the metal frame of the electronic device, and a patch antenna attached to the back cover, frame, or bracket of the electronic device.

[0141] Alternatively, if the antenna module further includes a second radiator, the second radiator includes at least one of the following: a frame antenna disposed on the metal frame of the electronic device, or a patch antenna attached to the back cover, frame, or bracket of the electronic device.

[0142] For example: Figure 11 As shown, the target radiator may include a patch antenna at position M disposed on the back cover 101 of the electronic device; or, the target radiator may include a frame antenna at position N disposed on the metal frame 102. The target radiator includes at least one of a first radiator and a second radiator.

[0143] In addition to being mounted on the back cover 101 of the electronic device, the patch antenna can also be mounted on other locations of the electronic device, such as the inside of the frame, the motherboard bracket, the camera bracket, etc., without specific limitations.

[0144] In this embodiment, the performance of a frame antenna or patch antenna mounted on an electronic device can be enhanced by slotting a groove in a metal floor.

[0145] In some embodiments, the first slot is arranged in at least one of: a metal middle frame of the electronic device, a metal back cover of the electronic device, an under-screen metal layer of the electronic device; a metal support in the electronic device.

[0146] Alternatively, in the case that the antenna module further comprises a second slot, the second slot is arranged in at least one of: a metal middle frame of the electronic device, a metal back cover of the electronic device, an under-screen metal layer of the electronic device; a metal support in the electronic device.

[0147] It is worth mentioning that, in the case that the first slot or the second slot comprises a metal middle frame of the electronic device, the metal floor comprises the metal middle frame; in the case that the first slot or the second slot is arranged in a metal back cover of the electronic device, the metal floor comprises the metal back cover; in the case that the first slot or the second slot is arranged in an under-screen metal layer of the electronic device, the metal floor comprises the under-screen metal layer; in the case that the first slot or the second slot is arranged in a metal support in the electronic device, the metal floor comprises the metal support.

[0148] For example, as shown in Figure 11 The target slot can comprise a slot arranged at position U of the metal middle frame 103 of the electronic device; or the target slot can comprise a slot arranged at position V of the under-screen metal layer 104, such as an under-screen copper foil. Wherein, the target slot comprises at least one of the first slot and the second slot.

[0149] Taking the first slot and the first radiator as an example, the combination of the first slot and the first radiator can comprise at least one of:

[0150] 1. The first radiator is a patch antenna arranged at position M of the back cover 101 of the electronic device, and the first slot is a slot arranged at position U of the metal middle frame 103 of the electronic device;

[0151] 2. The first radiator is a patch antenna arranged at position M of the back cover 101 of the electronic device, and the first slot is a slot arranged at position V of the under-screen copper foil of the electronic device;

[0152] 3. The first radiator is a frame antenna arranged at position N of the metal frame 102 of the electronic device, and the first slot is a slot arranged at position U of the metal middle frame 103 of the electronic device;

[0153] 4. The first radiator is a frame antenna arranged at position N of the metal frame 102 of the electronic device, and the first slot is a slot arranged at position V of the under-screen copper foil of the electronic device.

[0154] In this embodiment, the first slot or the second slot can be flexibly arranged on the existing ground metal structure of the electronic device, compared with the method of adding a metal ground plate in the electronic device, the structure of the electronic device can be simplified.

[0155] It should be noted that in this paper, the term "including", "containing" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0156] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above specific embodiments, and the above specific embodiments are only illustrative but not restrictive, and those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims.

Claims

1. An antenna module, characterized by The antenna module comprises: a first radiator, a metal floor and a feed source; the feed source is electrically connected with the first radiator; a first gap is formed between the metal floor and the first radiator; a first slot is formed on the metal floor; wherein the feed source is configured to excite a first current on the first radiator and a first magnetic current at the first slot, and the metal floor is configured to form a second current on opposite sides of the metal floor under the action of the first magnetic current, and the first current and the second current are in phase.

2. The antenna module of claim 1, wherein, A first end of the first slot is located at a position of an electric field intensity area of the first radiator, and the first end of the first slot penetrates a first side of the metal floor to communicate with the first gap, wherein the first side is a side of the metal floor facing the first radiator.

3. The antenna module of claim 2, wherein, The first slot comprises a first segment and a second segment, and a first end of the first slot is located at one end of the first segment facing away from the second segment. The first segment communicates with the second segment, and the first segment extends in a first direction, and the second segment extends in a second direction. The first direction is a direction extending from the first side to a middle region of the metal floor, and the second direction is the same as an extending direction of the first radiator.

4. The antenna module of claim 2, wherein, A second end of the first radiator is grounded, and the second end of the first radiator faces away from the first end of the first slot.

5. The antenna module of claim 1, wherein, The feed source comprises a first sub-feed source and a second sub-feed source, the first sub-feed source is electrically connected with the first radiator, and the second sub-feed source is electrically connected with a side wall of the first slot. Alternatively, the antenna module further comprises a power divider, and the feed source is electrically connected with the first radiator and the side wall of the first slot through the power divider.

6. The antenna module of any one of claims 1 to 5, wherein, A resonant frequency corresponding to an operating mode excited on the first radiator is a first resonant frequency. A resonant frequency corresponding to an operating mode excited on the first slot is a second resonant frequency. A difference between the first resonant frequency and the second resonant frequency is less than or equal to a preset threshold value.

7. The antenna module of any one of claims 1 to 5, wherein, Further comprising: a first tuning circuit and a second tuning circuit; the first tuning circuit is electrically connected with the first radiator; the second tuning circuit is electrically connected with the side wall of the first slot; an electrical parameter of the first tuning circuit and the second tuning circuit is adjustable, and the electrical parameter comprises at least one of a capacitance value, an inductance value and a resistance value.

8. The antenna module of any one of claims 1 to 5, wherein, Further comprising: a second radiator, a first end of the first radiator is arranged opposite to a second end of the second radiator, and a gap is formed between the first end of the first radiator and the second end of the second radiator; a second gap is formed between the metal floor and the second radiator; a second slot is formed on the metal floor; wherein, under the working condition of the feed source, a third current is coupled on the second radiator, a second magnetic current is excited at the second slot, and a fourth current is formed on opposite sides of the metal floor under the action of the second magnetic current, and the third current and the fourth current are in phase.

9. The antenna module of claim 8, wherein, The first end of the second slot is located at a position of an electric field intensity area of the second radiator, and the first end of the second slot penetrates through a second side edge of the metal floor to communicate with the second gap, wherein the second side edge is a side edge of the metal floor facing the second radiator.

10. The antenna module of claim 9, wherein, The first radiator and the second radiator are located at the same side of the metal floor. The second slot comprises a third segment and a fourth segment, and the first end of the second slot is located at one end of the third segment facing away from the fourth segment. The third segment communicates with the fourth segment, and the third segment extends in a first direction, and the fourth segment extends in a third direction; the first direction is a direction extending from a first side edge of the metal floor to a middle region of the metal floor, and the third direction is the same as an extending direction of the second radiator. The first segment of the first slot and the third segment of the second slot at least partially overlap, and the fourth segment is opposite to an extending direction of the second segment of the first slot.

11. The antenna module of claim 9, wherein, The first end of the first slot and the first end of the second slot are respectively arranged opposite to the break and communicate with each other.

12. The antenna module of any one of claims 1 to 5, wherein, The first radiator comprises at least one of an inverted F antenna (IFA), a monopole antenna, a dipole antenna and a T antenna.

13. The antenna module of any one of claims 1 to 5, wherein, Further comprising: A matching circuit, and the feed source is electrically connected with the first radiator through the matching circuit.

14. An electronic device, comprising: An antenna module as claimed in any one of claims 1 to 13.

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