Antenna module and electronic equipment

Abstract

The invention discloses an antenna module and electronic equipment, 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, the metal floor forms a second current on two opposite sides of the metal floor under the action of the first magnetic current, and the first current and the second current are consistent in phase.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to an antenna module and an electronic device. Background Art

[0002] With the trend of miniaturization and thinness of electronic devices such as mobile phones, the antenna radiation environment on electronic devices has been greatly compressed. If the antenna solution does not change, key performance such as antenna bandwidth and antenna efficiency will gradually decline.

[0003] In related technologies, in order to improve antenna performance, measures such as adding parasitic branches or multiplexing branches to construct high radiation efficiency modes are usually taken to optimize antenna performance. th More and more communication functions need to be integrated into electronic devices at the same time, such as the fifth generation (5G) communication system, WiFi multi-input multi-output (MIMO), near field communication (NFC), satellite communication, etc. The space available for antenna design is also greatly limited, making it impossible to implement measures such as adding parasitic branches or multiplexing branches to construct high radiation efficiency modes.

[0004] Therefore, the measures for enhancing antenna performance in the related art need to occupy antenna layout space, thereby limiting the scope of use. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide an antenna module and an electronic device, which can enhance the antenna performance of a first radiator by opening slots on a metal floor and exciting an equivalent magnetic current at the slots, so as to utilize the magnetic current to form a current that is consistent with the phase of the first radiator at the edge of the metal floor. It does not occupy antenna layout space and has a wide range of application scenarios.

[0006] In a first aspect, an embodiment of the present application provides an antenna module, the antenna module comprising: a first radiator, a metal floor 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] A first slot is formed on the metal floor;

[0010] The feed source is used to excite a first current on the first radiator and a first magnetic current at the first slot. Under the action of the first magnetic current, the metal floor forms a second current on two opposite sides of the metal floor, and the first current is consistent in phase with the second current.

[0011] In a second aspect, an embodiment of the present application provides an electronic device, which includes the antenna module as described in the first aspect.

[0012] In an embodiment of the present application, a slot is opened on a metal floor, and an equivalent magnetic current is excited at the slot to utilize the magnetic current to form a current at the edge of the metal floor that is consistent with the phase of the first radiator to enhance the antenna performance of the first radiator. Compared with the related art, which requires adding parasitic branches to the antenna layout space, or reusing branches to construct a high radiation efficiency mode, the metal floor can be formed by utilizing any grounded metal plate structure, and a slot can be opened 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 THE DRAWINGS

[0013] Figure 1 This is one of the structural schematic diagrams of the antenna module provided in the embodiment of the present application;

[0014] Figure 2a This is the second structural schematic diagram of the antenna module provided in the embodiment of the present application;

[0015] Figure 2b This is the third structural diagram of the antenna module provided in the embodiment of the present application;

[0016] Figure 3 This is the fourth structural diagram of the antenna module provided in the embodiment 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 at an edge of a metal floor;

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

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

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

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

[0023] Figure 5d yes Figure 3 Simulated S-parameter curves of the antenna module, the IFA antenna in the related art, and the slot antenna in the related art;

[0024] Figure 5e yes Figure 3 The simulated Smith curve diagram of the antenna module, the IFA antenna in the related art, and the slot antenna in the related art;

[0025] Figure 5f yes Figure 3 The simulation efficiency curves of the antenna module, the IFA antenna in the related art, and the slot antenna in the related art are shown;

[0026] Figure 6 This is the fourth structural diagram of the antenna module provided in the embodiment of the present application;

[0027] Figure 7 yes Figure 6 A schematic diagram showing the distribution of various structures or components in the antenna module;

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

[0029] Figure 8b yes Figure 6 The simulation efficiency curve of the antenna module shown is when the tuning circuit is under different electrical parameters;

[0030] Fig. 9 This is the fifth structural diagram of the antenna module provided in the embodiment of the present application;

[0031] Fig.10a yes Fig. 9 A schematic diagram of a first slot in the antenna module shown;

[0032] Fig.10b yes Fig. 9 A schematic diagram of a second slot in the antenna module shown;

[0033] Fig.11 It is a schematic diagram of the distribution positions of radiators and slots in an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0035] The terms "first", "second", etc. 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 interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0036] Communication capability is an important selling point for mobile phones and other electronic devices. Achieving a stable and high-speed communication experience has always been the design pursuit of mobile phones and other electronic devices. The hardware modules of electronic devices mainly include modems, RF modules, and antenna modules. Among them, the modem is limited by protocol regulations and device capabilities, and the RF module is limited by regulatory requirements and RF module performance. Therefore, it is difficult to achieve performance improvement through back-end design. As the front end of the communication module, the improvement of antenna performance will directly affect the communication performance of the terminal device.

[0037] In related technologies, in order to improve antenna performance, antenna performance is usually optimized by adding parasitic branches or multiplexing branches to construct a high radiation efficiency mode. This measure to enhance antenna performance has the problem of limited use range due to the need for the addition of parasitic branches or multiplexing branches to occupy antenna layout space.

[0038] In the embodiment of the present application, the radiation capability of the antenna body is no longer limited to improvement. Instead, slots are provided on the metal floor to stimulate the metal floor as a radiator with a larger diameter to improve the radiation efficiency of the antenna. Compared with the related art that requires adding parasitic branches or reused branches to the existing antenna layout space, 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 electronic device provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0040] See also Figure 1, the antenna module provided in the embodiment of the present application includes: a first radiator 10, a metal floor 20 and a feed source 30;

[0041] The feed source 30 is electrically connected to the first radiator 10;

[0042] There is a first gap 40 between the metal floor 20 and the first radiator 10;

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

[0044] Among them, the feed source 30 is used to excite a first current I1 on the first radiator 10 and excite a first magnetic current L1 at the first slot. Under the action of the first magnetic current L1, the metal floor 20 forms a second current I2 on the opposite side edges of the metal floor 20, 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. When the directions of the first current I1 and the second current I2 are the same, the second current I2 and the first current I1 are superimposed in phase, thereby enhancing 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, thereby optimizing the radiation pattern or polarization characteristics of the first radiator 10.

[0046] For the sake of convenience, in the embodiments of the present application, the first current I1 and the second current I2 are generally directed in the same direction as an example for illustration, which is not specifically limited herein.

[0047] In some embodiments, Figure 4b or Figure 4c As shown, the second current I2 is distributed on the left and right sides of the metal floor 20 . 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, Figure 1 , Figure 2a or Figure 2b As shown, the second current I2 may be distributed on the upper and lower sides of the metal floor 20 . At this time, the first radiator 10 may be located on the upper side or the lower side of the metal floor 20 .

[0049] For ease of explanation, in the embodiments of the present application, it is generally taken as an example 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, which constitutes a specific limitation.

[0050] In some embodiments, the first radiator 10 may be constructed in the form of a frame antenna or a patch antenna, and for ease of description, in the embodiments of the present application, the first radiator 10 is usually illustrated as a frame antenna, which is not specifically limited herein.

[0051] It should be noted that when the first radiator 10 is a frame antenna, Figure 1 The feed source 30 shown in the figure is arranged on the main board in the electronic device, rather than being arranged outside the frame of the electronic device. Figure 1 Just as 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. For the sake of convenience of explanation, in the embodiments of the present application, the metal floor 20 is usually taken as a metal middle frame for example, which is not specifically limited here.

[0053] In some embodiments, the metal floor 20 and the first radiator 10 may be arranged side by side. In this case, 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: Figure 3 As shown, the metal floor 20 is a metal middle frame on the electronic device, and the first radiator 10 is a frame antenna arranged on the metal frame of the electronic device. At this time, a first gap 40 is formed by opening a through hole in the area of ​​the metal middle frame facing the metal frame, so that the side of the first radiator 10 does not contact the metal floor 20.

[0055] In other embodiments, the metal floor 20 and the first radiator 10 may be located in different planes, for example, the first radiator 10 and the metal floor 20 are stacked, 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 staggered in a direction perpendicular to the metal floor 20.

[0056] In some embodiments, the antenna form of the first radiator 10 may include at least one of an inverted-F antenna (IFA), a monopole antenna, a dipole antenna, and a T antenna.

[0057] 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 .

[0058] At this time, the feed source 30 is electrically connected to a portion of the first radiator 10 between its first end and its second end, and the electric field strength zone of the first radiator 10 is located near the first end of the first radiator 10. In this way, the opening end of the first slot 21 is located near the first end of the first radiator 10, so that the first end of the first slot 21 is located at the electric field strength zone of the first radiator 10.

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

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

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

[0062] In some embodiments, a 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 radiator 10 .

[0063] In some embodiments, the metal floor 20 having the first slot 21 can constitute a slot antenna with one end open, and the typical electrical length of the slot antenna is 0.25λ+n×0.5λ, that is, 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, wherein 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 resonance points corresponding to the working modes of the first slot 21 and the first radiator 10 are the same or close, so that during operation, the second current I2 excited by the first slot 21 can be consistent in phase with the first current I1 excited by the first radiator 10 .

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

[0066] In some embodiments, in order to achieve phase consistency between the first current I1 and the second current I2, the lengths of the first slot 21 and the first radiator 10 may be designed so that their resonant frequencies are the same or close to each other.

[0067] For example, the resonant frequency corresponding to the working mode excited on the first radiator 10 is the first resonant frequency;

[0068] The resonant frequency corresponding to the working mode excited on the first slot 21 is the second resonant frequency;

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

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

[0071] In this way, when the feed source 30 feeds power, the frequency of the excitation signal on the first radiator 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 first current I1 on the first radiator 10 is consistent in phase with the second current I2 formed at the edge of the metal floor 20 based on the action of the first magnetic current L1.

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

[0073] For example: Figure 3 As shown, the first end of the first slot 21 is located in the electric field strength area of ​​the first radiator 10, and the first end of the first slot 21 passes through the first side 22 of the metal floor 20 to be connected with the first gap 40, wherein the first side 22 is the side of the metal floor 20 facing the first radiator 10.

[0074] Among them, the electric field strength zone of the first radiator 10 can be understood as the first current excited on the first radiator 10 when the feed source 30 feeds power to the first radiator 10. Based on the action of the first current, an electric field will be generated near the first radiator 10. At this time, the electric field strength zone of the first radiator 10 can be understood as the area with the strongest electric field near the first radiator 10, or the area where the electric field strength is greater than the preset field strength.

[0075] In some embodiments, Figure 3 As shown, taking the first radiator 10 as an IFA antenna as an example, at this time, the electric field intensity area of ​​the first radiator 10 is the first end of the first radiator 10, and the second end of the first radiator 10 is grounded.

[0076] Of course, the first radiator 10 may be an antenna of other forms besides the IFA antenna. In this case, the electric field strength area of ​​the first radiator 10 will also change accordingly. The specific position of the electric field strength area of ​​the first radiator 10 is not limited here.

[0077] In this 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 strength 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 implementation, Figure 3 As shown, 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 an end of the first segment AB that is away from the second segment BC;

[0079] The first segment AB is connected to the second segment BC, and the first segment AB extends along a first direction, namely, the X-axis direction, and the second segment BC extends along a second direction, namely, the Y-axis direction; the first direction is the direction extending from the first side 22 to the middle area of ​​the metal floor 20, and the second direction is the same as the extension direction of the first radiator 10.

[0080] in, Figure 3 The first current I1 in the antenna module is as shown in Figure 4a As shown, the first magnetic current L1 and the second current I2 are as follows Figure 4b As shown, Figure 4c As shown, since the second current I2 is in phase with the first current I1 , the antenna performance of the first radiator 10 can be enhanced by combining the working modes of the first current I1 and the second current I2 .

[0081] In this 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 extend the first slot 21 to the middle area of ​​the metal floor 20, and the second segment BC has the same extension direction as 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 antenna performance enhancement of the first slot 21 to the first radiator 10.

[0082] It should be noted that in the embodiment of the present application, the first slot 21 is illustrated as including the first segment AB and the second segment BC in an L-shaped structure. However, the shape and extension direction of the first slot 21 may be other structures, such as extending along a curve or other arbitrary shapes. The shape and extension direction of the first slot 21 are not specifically limited herein.

[0083] In some other embodiments, the feed source 30 may feed power to the first radiator 10 and the sidewall of the first slot 21 simultaneously to excite the first current I1 on the first radiator 10 and excite the first magnetic current L1 at the first slot 21 .

[0084] As an optional implementation, Figure 2a As shown, the feed source 30 includes a first sub-feed source 31 and a second sub-feed source 32, the first sub-feed source 31 is electrically connected to the first radiator 10, and the second sub-feed source 32 is electrically connected to the side wall of the first slot 21;

[0085] Or, if Figure 2b As shown, the antenna module further includes a power divider 50 ; the feed source 30 is electrically connected to the first radiator 10 and the side wall of the first slot 21 respectively through the power divider 50 .

[0086] In some embodiments, when the feed source 30 includes a first sub-feed source 31 and a second sub-feed source 32, the first sub-feed source 31 can be used to excite the first 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 operating frequencies of the first sub-feed source 31 and the second sub-feed source 32 can be controlled to be the same and the phases can be consistent so that the first current I1 has the same frequency and the same phase as the first magnetic current L1. In this way, the first current I1 can have the same frequency and the same phase as the second current I2 generated based on the first magnetic current L1, so that the second current I2 can be used to enhance the first current I1 on the first radiator 10, thereby enhancing the antenna performance of the first radiator 10.

[0087] In other embodiments, Figure 2b As shown, when the feed source 30 is electrically connected to the first radiator 10 and the side wall of the first slot 21 respectively 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 is divided into two parts by the power divider 50, one part is transmitted to the first radiator 10 to stimulate the first current I1 on the first radiator 10, and the other part is transmitted to the side wall of the first slot 21 to stimulate the first magnetic current L1 at the first slot 21, and then based on the action of the first magnetic current L1, the second current I2 is generated at the edge of the metal floor 20. At this time, since the first current I1 and the second current I2 are stimulated by the same feed source 30, the phases of the first current I1 and the second current I2 are consistent.

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

[0089] As an optional implementation, Figure 3As shown, the antenna module provided in the embodiment of the present application also includes:

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

[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 will not be described in detail here.

[0092] In this embodiment, the impedance matching function of the antenna can be achieved through the matching circuit 60, or the first radiator 10 can be tuned through the matching circuit 60 so that the first radiator 10 operates within a required frequency band.

[0093] It is worth mentioning that Figure 3 Taking the antenna module shown as an example, 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 at the same time. Based on the effect of the first magnetic current L1, the second current I2 with the same phase and the same propagation direction as the first current I1 is distributed on the edges of the two opposite sides of the metal floor 20. In this way, the antenna modes of the first radiator 10 and the first slot 21 can be superimposed to form an electromagnetic hybrid mode, thereby achieving full excitation of the current on the metal floor 20, utilizing the space of the metal floor 20 without increasing the antenna area, and achieving the effect of simultaneously improving the impedance bandwidth and the antenna efficiency.

[0094] For example: Figure 5a , Figure 5b , Figure 5c , Figure 5d , Figure 5e and Figure 5f As shown, Figure 5a is a schematic diagram of current distribution simulation when the first radiator is working, that is, the current distribution when only the first radiator 10 is working 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 schematic diagram of current distribution simulation when the first slot 21 is working, that is, the current distribution when only the first slot is working and the first radiator 10 is not working. At this time, the current is mainly distributed on the side of the first slot 21 facing 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 5cThis is a schematic diagram of the current distribution simulation of the antenna module provided in the embodiment of the present application, that is, the current distribution when both the first radiator 10 and the first slot 21 are working. 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 floor 20 are fully excited, and the radiation efficiency of the corresponding radiator is improved. Figure 5a The current distribution shown is Figure 5b The current distributions shown are superimposed to obtain Figure 5c The current distribution is shown.

[0095] Figure 5d Shows Figure 3 The simulated S parameter curves of the antenna module, the IFA antenna in the related art, and the slot antenna in the related art are shown. Figure 5d It can be seen that compared with the slot antenna and IFA antenna in the related art, the antenna module provided in the embodiment of the present application corresponds to a magneto-electric integrated antenna. Due to the introduction of the magneto-electric hybrid mode, an impedance circle will be added to the impedance, such as Figure 5e As shown, this impedance characteristic is conducive to obtaining broadband performance. Therefore, the bandwidth of the magnetoelectric integrated antenna provided in the embodiment of the present application is greatly optimized.

[0096] Figure 5f Shows Figure 3 The simulation efficiency curves of the antenna module, the IFA antenna in the related art, and the slot antenna in the related art are shown. Figure 5f It can be seen that the peak efficiency of the magnetoelectric integrated antenna constructed in the embodiment of the present application is significantly improved compared with the slot antenna and IFA antenna in the related art.

[0097] As shown in Table 1 below, the simulated passive performance parameters of the magnetoelectric 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 type -6dB impedance bandwidth Antenna efficiency (0.8-0.9G) IFA Antenna 40MHz -2.89dB Slot Antenna 80MHz -1.05dB Magnetoelectric integrated antenna 160MHz -0.35dB

[0100] As can be seen from Table 1 above, the magnetoelectric integrated antenna constructed in the embodiment of the present application has improvements in impedance bandwidth and antenna efficiency compared to the slot antenna and IFA antenna in the related art.

[0101] As an optional implementation, Figure 6 As shown, 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 to 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 a capacitance value, an inductance value, and a resistance value.

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

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

[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 aperture tuning function of the antenna module can be realized through the first tuning circuit 71 and the second tuning circuit 72, and the high radiation efficiency and wide bandwidth effect of the antenna module can 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 be loaded with capacitance, inductance, suspended, and other working states. By adjusting the working states of the first tuning circuit 71 and the second tuning circuit 72, the antenna aperture can be covered 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 Shows Figure 6 The antenna module shown in the figure is in a simulated S parameter curve diagram under different electrical parameters in the tuning circuit, namely the first tuning circuit 71 and the second tuning circuit 72. Figure 8a You can see Figure 6 The antenna module shown has wide bandwidth characteristics in each frequency band.

[0111] Figure 8b Shows Figure 6 The antenna module shown in the figure is a simulated efficiency curve diagram of the tuning circuit, namely the first tuning circuit 71 and the second tuning circuit 72, under different electrical parameters. Figure 8b You can see Figure 6 The antenna module shown has high peak efficiency characteristics in each frequency band.

[0112] As an optional implementation, Fig. 9 , Fig.10a and Fig.10b As shown, it also includes:

[0113] The second radiator 80, the first end of the first radiator 10 and the second end of the second radiator 80 are arranged opposite to each other, 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] A second gap 90 is provided between the metal floor 20 and the second radiator 80;

[0115] The metal floor 20 is provided with a second slot 23;

[0116] In which, when the feed source 30 is working, the third current I3 is coupled out from the second radiator 80 and the second magnetic current L2 is excited at the second slot 23. Under the action of the second magnetic current L2, the metal floor 20 forms a fourth current I4 on the opposite side edges of the metal floor 20. The third current I3 and the fourth current I4 are in phase and in the same direction.

[0117] It should be noted that the above-mentioned second radiator 80 is coupled with the first radiator 10 through the break O, so that when the feed source 30 is working, the second radiator 80 couples out the third current I3 on ​​the second radiator 80 based on the coupling effect with the first radiator 10, and the way in which the second magnetic current L2 on the second slot 23 is generated is the same as the way in which the first magnetic current L1 on the first slot 21 in the aforementioned embodiment is generated.

[0118] For example: the first end of the second slot 23 is located at the electric field strength area of ​​the second radiator 80, and the first end of the second slot 23 passes through the second side edge of the metal floor 20 (the same side edge as the first side edge 22) to connect 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 Fig. 9In the illustrated embodiment, the second radiator 80 and the first radiator 10 extend in the same direction and are located on the same side of the metal floor 20. In this case, the first side 22 and the second side are the same side of the metal floor 20. Fig. 9 In the illustrated embodiment, the end of the second radiator 80 facing away from the first radiator 10 is grounded, so that the electric field strength zone of the second radiator 80 is the end of the second radiator 80 facing the first radiator 10, that is, the electric field strength zone of the first radiator 10 and the electric field strength zone 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 side wall 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 at 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 radiation 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 magneto-electric hybrid mode having a resonant frequency different from that of the first radiator 10 can be constructed by the second radiator 80 and the second slot 23.

[0122] For example: Fig. 9 As shown, the length of the second radiator 80 is shorter than that of the first radiator 10, and the length of the second slot 23 is shorter than that of the first slot 21. In this way, the resonant frequency of the second radiator 80 and the second slot 23 is consistent and higher than the resonant frequency of the first radiator 10 and the first slot 21. Fig.10a As shown, when the antenna module works at a low frequency, the first radiator 10 at the lower side is longer in size and serves as a low-frequency frame branch, extending from the break O to the first slot 21 below as a low-frequency slot branch. At this time, the low-frequency slot branch and the low-frequency frame branch work together to excite a low-frequency magneto-electric hybrid mode; Fig.10b As shown, when the antenna module works at high frequency, the second radiator 80 on the upper side is longer in size as a high-frequency frame branch, extending from the break O to the second slot 23 above as a high-frequency slot branch, at this time, the high-frequency slot branch and the high-frequency frame branch work together to excite the high-frequency magneto-electric hybrid mode. In this way, the antenna module can obtain high-efficiency broadband performance at low and high frequencies.

[0123] In this embodiment, by adding the second radiator 80 and the second slot 23, a plurality of magneto-electric hybrid modes of resonance frequencies can be constructed, so that the antenna module can achieve multi-band, broadband, and high antenna efficiency effects.

[0124] In some embodiments, Fig. 9 As shown, when the electric field strength area of ​​the first radiator 10 and the electric field strength area of ​​the second radiator 80 are both located at the break O, the first end of the first slot 21, the first end of the second slot 23 and the break O are arranged opposite to each other and are connected to 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] like Fig.10b 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 an end of the third segment DE facing away from the fourth segment EF;

[0127] The third segment DE is connected to the fourth segment EF, and the third segment DE is along the first direction, that is, Fig.10b The fourth segment EF extends along the third direction, that is, Fig.10b The first direction is the direction extending from the first side 22 to the middle area of ​​the metal floor 20, and the third direction is the same as the extension direction of the second radiator 80;

[0128] The first segment AB of the first slot 21 at least partially overlaps with the third segment DE of the second slot 23 , and the fourth segment EF extends in the opposite direction to the second segment BC of the first slot 21 .

[0129] 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 respectively located on opposite sides of the break O, and the electric field intensity regions of the first radiator 10 and the second radiator 80 have an overlapping area. By at least partially overlapping the first segment AB with 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 respectively arranged opposite to the break O and are connected to each other, wherein the break O is the common electric field intensity region of the first radiator 10 and 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. The second slot 23 can be extended to the middle area of ​​the metal floor 20 through the third segment DE, and the fourth segment EF has the same extension direction as 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 and the second segment BC of the first slot 21 extend in opposite directions, that is, the fourth segment EF extends in a direction beyond the second radiator 80 , and the second segment BC extends in a direction toward the first radiator 10 .

[0132] For example: Fig. 9 As shown, the first radiator 10 is located at the lower side of the break O, and the second radiator 80 is located at the upper side of the break O;

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

[0134] The fourth segment EF and the second radiator 80 extend in the same direction, and at least a portion 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 placed 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 current I2, and improving the degree to which the first slot 21 improves the performance of the first radiator 10; in addition, the fourth segment EF can be placed 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 current I4, and improving the degree to which the second slot 23 improves the performance of the second radiator 80.

[0136] In an embodiment of the present application, a slot is opened on a metal floor, and an equivalent magnetic current is excited at the slot to utilize the magnetic current to form a current at the edge of the metal floor that is consistent with the phase of the first radiator to enhance the antenna performance of the first radiator. Compared with the related art, which requires adding parasitic branches to the antenna layout space, or reusing branches to construct a high radiation efficiency mode, the metal floor can be formed by utilizing any grounded metal plate structure, and a slot can be opened 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.

[0137] An embodiment of the present application also provides an electronic device, which includes any antenna module provided by the aforementioned embodiments of the present application.

[0138] In some embodiments, the electronic device of the embodiments of the present application may be a mobile phone, a tablet computer, a laptop computer, a PDA, a vehicle-mounted electronic device, a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a personal digital assistant (PDA), etc. It may also be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine or a self-service machine, etc., and the embodiments of the present application are not specifically limited.

[0139] In the antenna module in the embodiment of the present application, a grounded metal plate in the electronic device can be used to construct a slot antenna, thereby enhancing the antenna performance of the first radiator, and 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 provided on a metal frame of the electronic device, a patch antenna attached to a back cover, frame or bracket of the electronic device;

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

[0142] For example: Fig.11 As shown, the target radiator may include a patch antenna disposed at position M on the back cover 101 of the electronic device; or the target radiator may include a frame antenna disposed at position N 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 attached to the back cover 101 of the electronic device, the patch antenna may also be attached to other locations of the electronic device, such as the inside of a frame, a mainboard bracket, a camera bracket, etc., which are not specifically limited here.

[0144] In this implementation, the performance of the frame antenna or patch antenna provided on the electronic device can be enhanced by making grooves on the metal floor.

[0145] In some embodiments, the first slot is provided in at least one of the following: a metal middle frame of the electronic device, a metal back cover of the electronic device, a metal layer under the screen of the electronic device; a metal bracket in the electronic device;

[0146] Alternatively, when the antenna module further includes a second slot, the second slot is provided in at least one of the following: a metal middle frame of the electronic device, a metal back cover of the electronic device, a metal layer under the screen of the electronic device; or a metal bracket inside the electronic device.

[0147] It is worth mentioning that, when the first slot or the second slot includes a metal middle frame provided in the electronic device, the metal floor includes the metal middle frame; when the first slot or the second slot is provided in a metal back cover of the electronic device, the metal floor includes the metal back cover; when the first slot or the second slot is provided in a metal layer under the screen of the electronic device, the metal floor includes the metal layer under the screen; when the first slot or the second slot is provided in a metal bracket in the electronic device, the metal floor includes the metal bracket.

[0148] For example: Fig.11 As shown, the target slot may include a slot opened at position U of the metal middle frame 103 of the electronic device; or the target slot may include a slot opened at position V of the metal layer 104 under the screen, such as the copper foil under the screen. The target slot includes 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 may include at least one of the following:

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

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

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

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

[0154] In this embodiment, the first slot or the second slot can be flexibly arranged on an existing grounded metal structure on the electronic device, which can simplify the structure of the electronic device compared to adding a metal floor in the electronic device.

[0155] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence 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 conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An antenna module, characterized in that: include: a first radiator, a metal floor and a feed; The feed source is electrically connected to the first radiator; There is a first gap between the metal floor and the first radiator; A first slot is formed on the metal floor; The feed source is used to excite a first current on the first radiator and a first magnetic current at the first slot. Under the action of the first magnetic current, the metal floor forms a second current on two opposite sides of the metal floor, and the first current is consistent in phase with the second current.

2. The antenna module according to claim 1, characterized in that: The first end of the first slot is located at the electric field strength area of ​​the first radiator, and the first end of the first slot passes through the first side of the metal floor to communicate with the first gap, wherein the first side is the side of the metal floor facing the first radiator.

3. The antenna module according to claim 2, characterized in that: The first slot includes a first segment and a second segment, and the first end of the first slot is located at an end of the first segment facing away from the second segment; The first segment is connected to the second segment, and the first segment extends along a first direction, and the second segment extends along a second direction; The first direction is a direction extending from the first side to a middle area of ​​the metal floor, and the second direction is the same as an extending direction of the first radiator.

4. The antenna module according to claim 2, characterized in that: The 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 according to claim 1, characterized in that: The feed includes a first sub-feed and a second sub-feed, the first sub-feed is electrically connected to the first radiator, and the second sub-feed is electrically connected to the side wall of the first slot; Alternatively, the antenna module further includes a power divider; the feed source is electrically connected to the first radiator and the side wall of the first slot respectively through the power divider.

6. The antenna module according to any one of claims 1 to 5, characterized in that: The resonant frequency corresponding to the working mode excited on the first radiator is the first resonant frequency; The resonant frequency corresponding to the working mode excited on the first slot is the second resonant frequency; A difference between the first resonant frequency and the second resonant frequency is less than or equal to a preset threshold.

7. The antenna module according to any one of claims 1 to 5, characterized in that: Also includes: a first tuning circuit and a second tuning circuit; The first tuning circuit is electrically connected to the first radiator; The second tuning circuit is electrically connected to the side wall of the first slot; The electrical parameters of the first tuning circuit and the second tuning circuit are adjustable, and the electrical parameters include at least one of a capacitance value, an inductance value, and a resistance value.

8. The antenna module according to any one of claims 1 to 5, characterized in that: Also includes: a second radiator, wherein the first end of the first radiator and the second end of the second radiator are arranged opposite to each other, 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 provided between the metal floor and the second radiator; A second slot is provided on the metal floor; Wherein, when the feed source is working, a third current is coupled out from the second radiator and a second magnetic current is excited at the second slot. Under the action of the second magnetic current, a fourth current is formed on the opposite sides of the metal floor, and the third current is consistent in phase with the fourth current.

9. The antenna module according to claim 8, characterized in that: The first end of the second slot is located at the electric field strength area of ​​the second radiator, and the first end of the second slot passes through the second side of the metal floor to communicate with the second gap, wherein the second side is the side of the metal floor facing the second radiator.

10. The antenna module according to claim 9, characterized in that: The first radiator and the second radiator are located on the same side of the metal floor; The second slot includes a third segment and a fourth segment, and the first end of the second slot is located at an end of the third segment facing away from the fourth segment; The third segment is connected to the fourth segment, and the third segment extends along a first direction, and the fourth segment extends along a third direction; the first direction is a direction extending from the first side of the metal floor to the middle area of ​​the metal floor, and the third direction is the same as the extension direction of the second radiator; The first segment of the first slot at least partially overlaps with the third segment of the second slot, and the fourth segment extends in an opposite direction to the second segment of the first slot.

11. The antenna module according to claim 9, characterized in that: The first end of the first slot and the first end of the second slot are respectively arranged opposite to the break and are connected to each other.

12. The antenna module according to any one of claims 1 to 5, characterized in that: The first radiator includes at least one of an inverted F-antenna IFA, a monopole antenna, a dipole antenna, and a T-antenna.

13. The antenna module according to any one of claims 1 to 5, characterized in that: Also includes: A matching circuit, wherein the feed source is electrically connected to the first radiator through the matching circuit.

14. An electronic device, characterized in that: Comprising the antenna module as claimed in any one of claims 1 to 13.

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