Antenna module and electronic equipment

Abstract

The invention discloses an antenna module and electronic equipment, the antenna module comprises a floor, a first antenna and a second antenna, the first antenna comprises a first radiator and a first grounding unit, and the first radiator is electrically connected with the floor through the first grounding unit; the second antenna comprises a second radiating body, a second grounding unit, a parasitic radiating body and a parasitic grounding unit, the parasitic radiating body is located between the first radiating body and the second radiating body, a first fracture is formed between the parasitic radiating body and the first radiating body, and a second fracture is formed between the parasitic radiating body and the second radiating body; the second radiator is electrically connected with the floor through the second grounding unit, and the parasitic radiator is electrically connected with the floor through the parasitic grounding unit; wherein under the condition that the first radiating body receives a first feed signal, the parasitic radiating body and the second radiating body excite resonance current in a fracture common mode. In this way, the gain of the first radiator is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of antennas, and particularly relates to an antenna module and an electronic device. BACKGROUND

[0002] With the continuous development of antenna technology, the application range of the antenna module is also more and more extensive in people's life. However, due to the limited installation environment of the antenna module, the volume of the antenna module is relatively small, and in the actual use process, due to the limitation of the installation environment of the antenna module, the gain of the antenna module is usually high. SUMMARY

[0003] The application aims to provide an antenna module and an electronic device, which can solve the problem that the gain of the antenna module is usually high.

[0004] In order to solve the above technical problems, the application is implemented as follows:

[0005] In a first aspect, an embodiment of the application provides an antenna module, comprising: a floor, a first antenna and a second antenna, the first antenna comprising a first radiator and a first ground return unit, the first radiator being electrically connected to the floor through the first ground return unit, the second antenna comprising a second radiator, a second ground return unit, a parasitic radiator and a parasitic ground return unit, the parasitic radiator being located between the first radiator and the second radiator, and the parasitic radiator and the first radiator having a first break, the parasitic radiator and the second radiator having a second break, the second radiator being electrically connected to the floor through the second ground return unit, and the parasitic radiator being electrically connected to the floor through the parasitic ground return unit.

[0006] In the case that a first feed signal is received on the first radiator, the parasitic radiator and the second radiator excite a resonant current in a break common mode.

[0007] In a second aspect, an embodiment of the application provides an electronic device, comprising the antenna module of the first aspect.

[0008] In the embodiment of the application, in the case that a first feed signal is received on the first radiator, the parasitic radiator and the second radiator excite a resonant current in a break common mode. In this way, the resonant current can weaken the traveling wave current generated when the first radiator is fed, and reduce the gain in the maximum gain direction of the first radiator generated by the traveling wave current. At the same time, since the second radiator and the parasitic radiator jointly constitute a Slot CM mode, the currents on them are in the same direction, which enhances the radiation along the normal direction, further reduces the gain in the maximum gain direction of the first radiator, and the above break common mode can also be called a Slot CM mode.

[0009] Additional aspects and advantages of the present application will be in part apparent and in part pointed out below. BRIEF DESCRIPTION OF DRAWINGS

[0010] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0011] Figure 1 is a structural schematic diagram of an antenna module provided by an embodiment of the present application;

[0012] Figure 2 is a structural schematic diagram of an antenna module provided by an embodiment of the present application;

[0013] Figure 3 is a current distribution schematic diagram of the antenna module when the resonant frequency corresponding to the resonant current is far away from f1;

[0014] Figure 4 is a current distribution schematic diagram of the antenna module when the resonant frequency corresponding to the resonant current is close to f1;

[0015] Figure 5 is a structural schematic diagram of an antenna module provided by an embodiment of the present application. DETAILED DESCRIPTION

[0016] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explanation of the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor, fall within the scope of protection of the present application.

[0017] The terms "first", "second" in the description and claims of the present application can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally means that the front and rear associated objects are in an "or" relationship.

[0018] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0019] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0020] Referring to Figure 1 and Figure 2 , Figure 1 and Figure 2 respectively provide a structure schematic diagram of an antenna module according to an embodiment of the present application, as shown in Figure 1 and Figure 2 , the antenna module comprises a floor 30, a first antenna 10 and a second antenna 20, the first antenna 10 comprises a first radiator 11 and a first ground return unit 12, the first radiator 11 is electrically connected with the floor 30 through the first ground return unit 12, the second antenna 20 comprises a second radiator 21, a second ground return unit 22, a parasitic radiator 23 and a parasitic ground return unit 24, the parasitic radiator 23 is located between the first radiator 11 and the second radiator 21, and the parasitic radiator 23 has a first break 40 with the first radiator 11, the parasitic radiator 23 has a second break 50 with the second radiator 21, the second radiator 21 is electrically connected with the floor 30 through the second ground return unit 22, and the parasitic radiator 23 is electrically connected with the floor 30 through the parasitic ground return unit 24;

[0021] Wherein, in the case that a first feed signal is received on the first radiator 11, the parasitic radiator 23 and the second radiator 21 excite resonant current in the break common mode.

[0022] The first radiator 11 is electrically connected to the floor 30 through the first ground return unit 12, and the second radiator 21 is electrically connected to the floor 30 through the second ground return unit 22. The specific mode of electrical connection between the first ground return unit 12 and the floor 30 and the specific mode of electrical connection between the second ground return unit 22 and the floor 30 are not limited herein. Alternatively, one end of the first ground return unit 12 can be electrically connected to the floor 30, and the other end of the first ground return unit 12 can be electrically connected to one end of the first radiator 11 away from the first break 40. One end of the second ground return unit 22 can be electrically connected to the floor 30, and the other end of the second ground return unit 22 can be electrically connected to one end of the second radiator 21 away from the second break 50.

[0023] In the embodiment of the present application, when the first feed signal is received on the first radiator 11, the parasitic radiator 23 and the second radiator 21 are excited to generate a resonant current in the break common mode. In this way, the resonant current can weaken the traveling wave current generated when the first radiator 11 is fed, and reduce the gain in the maximum gain direction of the first radiator 11. At the same time, since the second radiator 21 and the parasitic radiator 23 together form a Slot CM mode, the current on the Slot CM mode is in the same direction, which enhances the radiation along the normal direction, further reduces the gain in the maximum gain direction of the first radiator 11, and the above-mentioned break common mode can also be referred to as a Slot Common mode (Slot CM).

[0024] It should be noted that the above-mentioned normal direction can be understood as the x direction in Figure 3 and Figure 4 , and the transmission direction of the traveling wave current can be understood as the y direction in Figure 3 and Figure 4 . Alternatively, when the antenna module is applied to an electronic device, the traveling wave current can be generated on the body of the electronic device, and the body can include a middle frame.

[0025] It should be noted that, alternatively, since the gain of the first radiator 11 of the antenna module in the embodiment of the present application is low, and the operating frequency of the first feed signal can be in the WIFI frequency band, in the case that the Equivalent Isotropic Radiated Power (EIRP) value of the WIFI is limited to a small value, the radiation performance of the WIFI can also be good. That is, by implementing an antenna module with low gain, a lower EIRP can be achieved under the same radio frequency conduction and antenna passive efficiency, and the larger the improvement margin of the antenna passive efficiency or the radio frequency conduction under the premise of meeting the regulatory requirements, the better the WIFI performance can be achieved.

[0026] Optionally, the floor 30, the first radiator 11, the first ground return unit 12, the second radiator 21, the second ground return unit 22, the parasitic radiator 23 and the parasitic ground return unit 24 can all be made of metal materials, so that the conductivity of the floor 30, the first radiator 11, the first ground return unit 12, the second radiator 21, the second ground return unit 22, the parasitic radiator 23 and the parasitic ground return unit 24 can be enhanced.

[0027] It should be noted that when the first feeding signal is received on the first radiator 11, the first radiator 11 can work at the frequency f1 corresponding to the first feeding signal, at the same time, the parasitic radiator 23 and the second radiator 21 can excite the resonant current in the slot CM mode, and the resonant frequency corresponding to the resonant current can be far away from f1, that is, the difference between the resonant frequency corresponding to the resonant current and f1 is outside the third preset range, or the resonant frequency corresponding to the resonant current can be close to f1, that is, the difference between the resonant frequency corresponding to the resonant current and f1 is within the third preset range, and the resonant frequency corresponding to the resonant current can also be referred to as a high mode resonant point.

[0028] It should be noted that referring to Figure 3 and Figure 4 , the solid arrow B is used to represent the transmission direction of the standing wave current, the dashed arrow C represents the transmission direction of the traveling wave current, and the thickness of the solid arrow B and the dashed arrow C can be used to represent the strength of the corresponding current distribution, that is, the thicker the solid arrow B and the dashed arrow C, the stronger the corresponding current distribution; the thinner the solid arrow B and the dashed arrow C, the weaker the corresponding current distribution. In addition, Figure 3 and Figure 4 A is used to represent the feeding direction of the first feeding signal.

[0029] Referring to Figure 3 , Figure 3 When the resonant frequency corresponding to the resonant current is far away from f1, the current distribution schematic diagram of the antenna module is shown in Figure 3 When the antenna module is applied to an electronic device, and the first feeding signal is received on the first radiator 11 (which can be referred to as first radiator 11 feeding), the antenna module can have a standing wave current distributed thereon, and the electronic device can have a traveling wave current distributed on the body thereof. When the frequency of the resonant current in the slot CM mode on the parasitic radiator 23 and the second radiator 21 is far away from the operating frequency f1 of the first radiator 11, after the first radiator 11 is fed, the resonant current on the parasitic radiator 23 and the second radiator 21 is weak, the energy resonating on the parasitic radiator 23 and the second radiator 21 is less, and more energy is transmitted in the form of traveling wave current to the y direction, so that the pattern of the first radiator 11 is deviated to the y direction, and thus the gain of the first radiator 11 is high.

[0030] See Figure 4 , Figure 4 When the resonant frequency corresponding to the resonant current is close to f1, the current distribution diagram of the antenna module is shown in Figure 4 When the resonant current on the parasitic radiator 23 and the second radiator 21 in the Slot CM mode is close to the working frequency f1 of the first radiator 11, after the first radiator 11 is fed, the resonant current on the parasitic radiator 23 and the second radiator 21 is strong, and more energy resonates on the parasitic radiator 23 and the second radiator 21. Compared with Figure 3 When the resonant current on the parasitic radiator 23 and the second radiator 21 in the Slot CM mode is far away from the working frequency f1 of the first radiator 11, at this time, less energy is transmitted in the form of traveling wave current to the y direction, the directional diagram of the first radiator 11 is biased to the y direction, and because the strong Slot CM mode is formed on the parasitic radiator 23 and the second radiator 21, the x direction radiation is generated, which further improves the directional diagram of the antenna module.

[0031] It should be noted that when the first feeding signal is received on the first radiator 11, two parts of resonant current can be generated, one part of the resonant current is the resonant current in the break common mode excited on the parasitic radiator 23 and the second radiator 21, and the other part of the resonant current is the current in the 1 / 4 inverted F antenna (IFA) mode generated on the first radiator 11. The current corresponding to the first feeding signal is in the same direction, and the resonant current in this part can be ignored. The resonant current in the embodiment of the application mainly refers to the resonant current in the break common mode excited on the parasitic radiator 23 and the second radiator 21.

[0032] It should be noted that the feeding mode of the first radiator 11 and the second radiator 21 is not limited here, and as an optional embodiment, the first radiator 11 and the second radiator 21 can be fed by coupling.

[0033] As another optional embodiment, referring to Figure 2 and Figure 5 The first antenna 10 further comprises a first feeding unit 13, the first feeding unit 13 is electrically connected with the first radiator 11, and / or,

[0034] The second antenna 20 further comprises a second feeding unit 25, the second feeding unit 25 is electrically connected with the second radiator 21.

[0035] The specific structure of the first feeding unit 13 and the second feeding unit 25 is not limited here. Optionally, the first feeding unit 13 and the second feeding unit 25 can both be made of a metal material, so that the first feeding structure and the second feeding structure have good conductivity, thereby enhancing the feeding effect on the first radiator 11 and the second radiator 21.

[0036] When the first feeding unit 13 and the second feeding unit 25 are both metal springs, the metal springs can also be referred to as feeding tongues.

[0037] In the embodiments of the present application, the first feeding unit 13 is electrically connected to the first radiator 11, and the second feeding unit 25 is electrically connected to the second radiator 21, so that the first feeding unit 13 can feed the first radiator 11, and the second feeding unit 25 can feed the second radiator 21, thereby making the feeding of the first radiator 11 and the second radiator 21 more stable.

[0038] It should be noted that, optionally, the antenna module can include a first feed source and a second feed source, the first feed source can be electrically connected to the first radiator 11 through the first feeding unit 13, and the second feed source can be electrically connected to the second radiator 21 through the second feeding unit 25.

[0039] As an optional embodiment, the difference between the first length and the length of the first radiator 11 is within a first preset range, and the difference between the length of the parasitic radiator 23 and the length of the first radiator 11 is within a second preset range. The first length is the length between the first feeding point of the second radiator 21 and the second break 50, and the first feeding point is the connection point between the second feeding unit 25 and the second radiator 21.

[0040] The specific values of the first preset range and the second preset range are not limited here. Optionally, the first preset range and the second preset range can both be greater than or equal to -0.1 millimeter and less than or equal to 0.1 millimeter.

[0041] In the embodiments of the present application, when the difference between the first length and the length of the first radiator 11 is within the first preset range, and the difference between the length of the parasitic radiator 23 and the length of the first radiator 11 is within the second preset range, it can be considered that the first length is close to the length of the first radiator 11, and the length of the parasitic radiator 23 is close to the length of the first radiator 11, so that the Slot CM mode can be better excited.

[0042] It should be noted that the first length can not be close to the length of the first radiator 11, and the length of the parasitic radiator 23 can not be close to the length of the first radiator 11. In addition, the connection point of the first feeding unit 13 and the first radiator 11 can be referred to as a second feeding point.

[0043] As an optional implementation, the antenna module further includes a lumped device, the lumped device is electrically connected with the second feeding unit 25, and the lumped device is configured to adjust the resonant frequency corresponding to the resonant current.

[0044] In the embodiments of the present application, the resonant frequency corresponding to the resonant current can be adjusted by the lumped device, so that the resonant frequency can be close to the radiation frequency on the first radiator 11, thereby the gain of the first radiator 11 can be improved more conveniently. The radiation frequency on the first radiator 11 can be understood as the frequency corresponding to the first feeding signal received by the first radiator 11.

[0045] It should be noted that the specific structure of the lumped device is not limited here, and optionally, the lumped device can include at least one of the following: resistance, capacitance, inductance, etc.

[0046] As an optional implementation, the antenna module further includes a capacitance or an inductance, the capacitance or the inductance is electrically connected with the second radiator 21, and the capacitance or the inductance is further electrically connected with the ground plate 30, and the capacitance or the inductance is configured to adjust the resonant frequency corresponding to the resonant current.

[0047] In the embodiments of the present application, the capacitance or the inductance is electrically connected with the second radiator 21, that is, it can be understood as the case that no feeding unit is arranged on the second radiator 21. At this time, there is no radio frequency path on the second radiator 21, and the second radiator 21 cannot transmit or receive radio frequency signals. At this time, the resonant frequency corresponding to the resonant current can be adjusted by the capacitance grounding or the inductance grounding, so that the resonant frequency corresponding to the resonant current is close to the radiation frequency on the first radiator 11, thereby improving the gain of the first radiator 11.

[0048] It should be noted that when the capacitance is electrically connected with the ground plate 30, it can be referred to as capacitance grounding, and when the inductance is electrically connected with the ground plate 30, it can be referred to as inductance grounding.

[0049] It should be noted that when no feeding unit is arranged on the second radiator 21, only the resonant current in the break common mode will be generated on the second radiator 21 and the parasitic radiator 23 under the excitation of the first feeding signal of the first radiator 11.

[0050] As an optional implementation, the difference between the resonant frequency corresponding to the resonant current and the frequency of the first feeding signal is within a third preset range.

[0051] The third preset range can be greater than or equal to -0.1 and less than or equal to 0.1.

[0052] In the embodiment of the application, when the difference between the resonant frequency corresponding to the resonant current and the frequency of the first feeding signal is within the third preset range, it can be understood that the resonant frequency corresponding to the resonant current is close to the frequency of the first feeding signal, so that the gain of the first radiator 11 can be reduced, thereby enhancing the radiation power of the first radiator 11 in the x direction.

[0053] It should be noted that when the difference between the resonant frequency corresponding to the resonant current and the frequency of the first feeding signal is 0, it can be understood that the resonant frequency corresponding to the resonant current is the same as the frequency of the first feeding signal, so that the gain of the first radiator 11 can be further reduced.

[0054] As an optional embodiment, in the case that the second feeding signal is received on the second feeding unit 25, the frequency of the second feeding signal is less than the frequency of the first feeding signal, and the difference between the resonant frequency corresponding to the resonant current and the frequency of the first feeding signal is within a fourth preset range.

[0055] The fourth preset range can be greater than or equal to -0.1 and less than or equal to 0.1.

[0056] The frequency of the first feeding signal can be referred to as f1, and the frequency of the second feeding signal can be referred to as f2.

[0057] In the embodiment of the application, in the case that the second feeding signal is received on the second feeding unit 25, the frequency of the second feeding signal is less than the frequency of the first feeding signal, that is, f2 is less than f1, at this time, the operating frequencies of the second radiator 21 and the first radiator 11 are different frequencies, and at the same time that the second feeding signal exists on the second radiator 21, the resonant current in the slot CM mode also exists on the second radiator 21 and the parasitic radiator 23. By controlling the difference between the resonant frequency corresponding to the resonant current and the frequency of the first feeding signal to be within the fourth preset range, the resonant current in the slot CM mode can have little influence on the radiation performance of f2, and at the same time, the resonant current in the slot CM mode can also reduce the gain of the first radiator 11, thereby enhancing the radiation power of the first radiator 11 in the x direction.

[0058] It should be noted that the second feeding signal can be radiated through the 1 / 4 IFA mode or the 1 / 4 monopole mode of the second radiator 21.

[0059] As an optional implementation, referring to Figure 5 The antenna module further comprises a tuning circuit 60, which is electrically connected with the second feeding unit 25, and is used for adjusting the resonant frequency corresponding to the resonant current.

[0060] In the embodiments of the present application, under the premise that the resonant current existing on the second radiator 21 and the parasitic radiator 23 at the frequency f2 and f1 has little influence on the performance of the working frequency band f2 of the second radiator 21, the resonant frequency corresponding to the resonant current in the Slot CM mode on the second radiator 21 and the parasitic radiator 23 is adjusted by the tuning circuit 60, so that the resonant frequency corresponding to the resonant current in the Slot CM mode on the second radiator 21 and the parasitic radiator 23 is close to the working frequency f1 of the first radiator 11, thereby further reducing the gain of the first radiator 11.

[0061] It should be noted that the specific structure of the tuning circuit 60 is not limited here.

[0062] As an optional implementation, the tuning circuit 60 comprises at least one of the following: an inductance-capacitance LC circuit and a control switch.

[0063] In the embodiments of the present application, the tuning circuit 60 comprises at least one of the following: an LC circuit and a control switch, thereby increasing the diversity and flexibility of the tuning circuit 60.

[0064] It should be noted that when the tuning circuit 60 comprises an LC circuit, the LC circuit can adopt a series-parallel LC circuit or a parallel-series LC circuit, thereby making the second radiator 21 and the parasitic radiator 23 generate different capacitive and inductive values at different frequency bands f1 / f2, so that under the premise that the resonant current in the Slot CM mode has little influence on the performance of the working frequency band f2 of the second radiator 21, the resonant frequency corresponding to the resonant current is close to the working frequency f1 of the first radiator 11, thereby further reducing the gain of the first radiator 11. At the same time, the diversity and flexibility of the LC circuit are also increased.

[0065] It should be noted that when the working frequency band of the first radiator 11 is narrow, the LC circuit can be used to adjust the resonant frequency of the resonant current in the Slot CM mode to be close to the working frequency f1 of the first radiator 11; but when the working frequency band of the first radiator 11 is wide, the control switch can be controlled to be in different switching states, so that the resonant frequency of the resonant current in the Slot CM mode can cover the working frequency band of the first radiator 11, so that the gain of the first radiator 11 is always low when the first radiator 11 is in a wide working frequency band, that is, the gain of the first radiator 11 can be controlled in a larger range by controlling the control switch.

[0066] It should be noted that the specific structure of the control switch is not limited here, and the control switch can be a single-pole four-throw (SP4T) switch.

[0067] It should be noted that when the tuning circuit (60) includes both the LC circuit and the control switch, the LC circuit and the control switch can be in series or in parallel, and the specific connection mode is not limited here.

[0068] The embodiment of the present application also provides an electronic device including the antenna module in the above embodiment. Since the electronic device provided by the embodiment of the present application includes the antenna module in the above embodiment, it has the same beneficial technical effects as the above embodiment, and the specific structure of the antenna module can be referred to the corresponding description in the above embodiment, which will not be repeated here.

[0069] It should be noted that when the above antenna module is arranged in the electronic device, it can be arranged on the middle frame of the electronic device, and the first antenna 10 and the second antenna 20 can be located on the same side of the middle frame of the electronic device.

[0070] The electronic device can be a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc.

[0071] In the description of the application, reference has been made to descriptive terms such as "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. Such terminology means that a particular feature, structure, material or characteristic being described is included in at least one embodiment or example of the application. The illustrative appearances of such terminology in various places in the specification does not necessarily refer to the same embodiment or example. Moreover, it is appreciated that the specific features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0072] Although embodiments of the present application have been shown and described, it would be appreciated by those skilled in the art that changes, modifications, alternatives and variations to these embodiments could be made without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. An antenna module, characterized in that: include: A floor, a first antenna, and a second antenna, wherein the first antenna includes a first radiator and a first ground return unit, the first radiator being electrically connected to the floor via the first ground return unit; the second antenna includes a second radiator, a second ground return unit, a parasitic radiator, and a parasitic ground return unit, the parasitic radiator being located between the first radiator and the second radiator, a first break being defined between the parasitic radiator and the first radiator, and a second break being defined between the parasitic radiator and the second radiator, the second radiator being electrically connected to the floor via the second ground return unit, and the parasitic radiator being electrically connected to the floor via the parasitic ground return unit; When the first radiator receives the first feeding signal, the parasitic radiator and the second radiator stimulate a resonant current in a gap common mode.

2. The antenna module according to claim 1, wherein: The first antenna further includes a first feeding unit, the first feeding unit is electrically connected to the first radiator, and / or, The second antenna further includes a second feeding unit, and the second feeding unit is electrically connected to the second radiator.

3. The antenna module according to claim 2, wherein: The difference between the first length and the length of the first radiator is within a first preset range, and the difference between the length of the parasitic radiator and the length of the first radiator is within a second preset range, the first length is the length between the first feeding point of the second radiator and the second break, and the first feeding point is the connection point between the second feeding unit and the second radiator.

4. The antenna module according to claim 2, wherein: The antenna module further includes a lumped component, which is electrically connected to the second feeding unit and is used to adjust the resonant frequency corresponding to the resonant current.

5. The antenna module according to claim 1, wherein: The antenna module also includes a capacitor or an inductor, which is electrically connected to the second radiator and is also electrically connected to the floor. The capacitor or the inductor is used to adjust the resonant frequency corresponding to the resonant current.

6. The antenna module according to any one of claims 1 to 5, characterized in that: A difference between a resonant frequency corresponding to the resonant current and a frequency of the first feeding signal is within a third preset range.

7. The antenna module according to claim 2 or 3, characterized in that: When the second feeding unit receives a second feeding signal, the frequency of the second feeding signal is lower than the frequency of the first feeding signal, and the difference between the resonant frequency corresponding to the resonant current and the frequency of the first feeding signal is within a fourth preset range.

8. The antenna module according to claim 7, wherein: The antenna module further includes a tuning circuit electrically connected to the second feeding unit, and the tuning circuit is used to adjust the resonant frequency corresponding to the resonant current.

9. The antenna module according to claim 8, wherein: The tuning circuit includes at least one of the following: an inductor-capacitor (LC) circuit and a control switch.

10. An electronic device, characterized in that: include: The antenna module according to any one of claims 1 to 9.

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