Antenna module and electronic equipment

Abstract

The invention relates to an antenna module and electronic equipment. The antenna module comprises a first antenna and a second antenna. A breaking joint is arranged between the first antenna and the second antenna; the antenna branch part between the grounding point of the second antenna and the breaking joint forms a first branch, the antenna branch part between the feeding point of the second antenna and the breaking joint forms a second branch, and the length of the second branch is smaller than that of the first branch; and at least one of the first branch knot and the second branch knot is used for assisting the first antenna to form a plurality of resonant frequencies in a working frequency band. In this way, at least one of the first branch knot and the second branch knot assists the first antenna in forming multiple resonant frequencies in the working frequency band, and the antenna performance of the first antenna is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of antenna technology, and in particular to an antenna module and an electronic device. Background Art

[0002] As electronic devices become increasingly versatile, the required communication frequency bands are also increasing. For example, antennas need to cover multiple communication bands, such as 2G, 3G, 4G, and 5G. This necessitates the use of a larger number of antennas within these devices. In practical applications, the two antennas within an electronic device typically operate only within their designed frequency bands and minimize interference with each other, thereby ensuring the efficiency of each antenna. Summary of the Invention

[0003] The present disclosure provides an antenna module and an electronic device to address the deficiencies of related technologies.

[0004] According to a first aspect of an embodiment of the present disclosure, an antenna module is provided, comprising a first antenna and a second antenna; a slit is provided between the first antenna and the second antenna; a branch portion of the antenna between a ground point of the second antenna and the slit constitutes a first branch portion, and a branch portion of the antenna between a feed point of the second antenna and the slit constitutes a second branch portion, wherein the length of the second branch portion is shorter than the length of the first branch portion;

[0005] At least one of the first branch and the second branch is used to assist the first antenna in forming multiple resonant frequencies within a working frequency band.

[0006] Optionally, the length of the first branch is less than or equal to a first preset length, and the length of the second branch is less than or equal to a second preset length; the first preset length is greater than the first preset length.

[0007] Optionally, when the first antenna includes a WiFi 2.4G operating frequency band and / or a WiFi 5G operating frequency band, the second preset length is less than or equal to 5 mm, and the first preset length is less than or equal to 25 mm.

[0008] Optionally, when the first antenna includes a WiFi 5G operating frequency band, the second antenna includes a first tuning and matching circuit;

[0009] The first antenna is used to generate two resonant frequencies in the WiFi 5G operating frequency band with the assistance of the first tuning and matching circuit and the second branch.

[0010] Optionally, the first tuning and matching circuit includes a first capacitor, a second capacitor and a first inductor; the first end of the first capacitor is electrically connected to the end of the second branch away from the break, and the second end of the first capacitor is electrically connected to the first ends of the second capacitor and the first inductor respectively; the second end of the second capacitor is grounded, and the second end of the first inductor is grounded.

[0011] Optionally, when the first antenna includes a WiFi 2.4G operating frequency band, the second antenna includes a second tuning and matching circuit;

[0012] The first antenna is used to generate two resonant frequencies in the WiFi 2.4G operating frequency band with the assistance of the second tuning and matching circuit and the second branch.

[0013] Optionally, the second tuning and matching circuit includes a second inductor, a third capacitor and a third inductor;

[0014] The first end of the second inductor is electrically connected to the second end of the first capacitor in the first tuning and matching circuit, and the second end of the second inductor is electrically connected to the first end of the third capacitor; the second end of the third inductor is electrically connected to the second end of the third capacitor, and the second end of the third inductor is grounded.

[0015] Optionally, the second antenna includes an isolation matching circuit and a third tuning matching circuit; the input end of the isolation matching circuit is electrically connected to the output end of the first tuning matching circuit or the second tuning matching circuit, and the output end of the isolation matching circuit is electrically connected to the third tuning matching circuit;

[0016] The isolation matching circuit is used to transmit the antenna signal output by the third tuning matching circuit and block the antenna signal output by the first tuning matching circuit or the second tuning matching circuit.

[0017] Optionally, the isolation matching circuit includes a third inductor and a fourth inductor; the first end of the fourth inductor is electrically connected to the first end of the third inductor, the second end of the fourth inductor is used to receive an antenna signal, and the second end of the third inductor is grounded.

[0018] Optionally, the third tuning and matching circuit includes a third inductor, a fourth inductor and a fourth capacitor; the first end of the fourth inductor is electrically connected to the first end of the third inductor, the second end of the fourth inductor is electrically connected to the first end of the fourth capacitor, and the second end of the fourth capacitor is grounded; the second end of the fourth inductor is used to receive the antenna signal.

[0019] Optionally, the first antenna includes an antenna tuning and matching circuit, which includes a fifth capacitor and a sixth capacitor; the first end of the fifth capacitor and the first end of the sixth capacitor are respectively electrically connected to the feeding point of the first antenna; the second end of the fifth capacitor receives and transmits antenna signals; and the second end of the sixth capacitor is grounded.

[0020] According to a second aspect of an embodiment of the present disclosure, an electronic device is provided, comprising a frame and an antenna module as described in any one of the first aspects, wherein the frame is used to implement antenna branches of the first antenna and the second antenna in the antenna module.

[0021] The technical solutions provided by the embodiments of the present disclosure may have the following beneficial effects:

[0022] The antenna module provided by the embodiment of the present disclosure includes a first antenna and a second antenna; a slit is provided between the first antenna and the second antenna; the antenna branch portion between the grounding point of the second antenna and the slit constitutes a first branch, the antenna branch portion between the feeding point of the second antenna and the slit constitutes a second branch, and the length of the second branch is less than that of the first branch; at least one of the first branch and the second branch is used to assist the first antenna in forming multiple resonant frequencies within the operating frequency band. In this way, this embodiment improves the antenna performance of the first antenna by assisting the first antenna in forming multiple resonant frequencies within the operating frequency band through at least one of the first branch and the second branch.

[0023] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0025] Figure 1 The figure is a schematic structural diagram of an antenna module according to an exemplary embodiment.

[0026] Figure 2 The figure is a schematic structural diagram of a second antenna according to an exemplary embodiment.

[0027] Figure 3 is a schematic structural diagram of another second antenna according to an exemplary embodiment.

[0028] Figure 4 is a schematic structural diagram of yet another second antenna according to an exemplary embodiment.

[0029] Figure 5is a circuit diagram of a second antenna according to an exemplary embodiment.

[0030] Figure 6 FIG. 1 is a simulation diagram showing an S11 parameter of a first antenna according to an exemplary embodiment.

[0031] Figure 7 FIG. 4 is a simulation diagram showing antenna efficiency of a first antenna according to an exemplary embodiment.

[0032] Figure 8 is a simulation diagram showing the antenna efficiency of another first antenna according to an exemplary embodiment.

[0033] Figure 9 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0034] Exemplary embodiments will be described in detail herein, with examples shown in the accompanying drawings. When the following description refers to the drawings, identical numbers in different drawings represent identical or similar elements, unless otherwise indicated. The exemplary embodiments described below do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure, as detailed in the appended claims. It should be noted that, unless there is a conflict, the features of the following embodiments and implementations may be combined with each other.

[0035] To solve the above technical problems, the present disclosure provides an antenna module and an electronic device. Figure 1 The antenna module includes a first antenna 11 and a second antenna 12. In one example, the first antenna 11 can be implemented using an inverted-F antenna, a monopole antenna, a loop antenna, or the like. The second antenna can be implemented using an inverted-F antenna.

[0036] Continue to see Figure 1 A gap 13 is provided between the first antenna 11 and the second antenna 12. The second antenna 12 includes a feed point FB2, a ground point GND2 and an antenna branch 121.

[0037] The antenna branch portion between the ground point GND2 of the second antenna 12 and the slit 13 constitutes the first branch L1, and the antenna branch portion between the feed point of the second antenna 12 and the slit constitutes the second branch L2. It is understandable that the length of the second branch L2 is shorter than that of the first branch L1.

[0038] In one example, the first branch L1 can assist the first antenna 11 in operating at multiple resonant frequencies in an operating frequency band, thereby improving the antenna efficiency of the first antenna 11. In this example, the length of the first branch is less than or equal to the first preset length, thereby meeting the electrical length requirements of the second antenna 12 and the first antenna 11. Taking the first antenna 11 operating in the WiFi2.4G operating frequency band and the second antenna operating frequency band being the LB band (such as cellular communication bands B5, B8, and B28) as an example, at this time, the first preset length is less than or equal to 25 mm, and the values ​​of the first branch and the first preset length can be selected according to the specific scenario, and the corresponding scheme falls within the protection scope of this disclosure.

[0039] In another example, the second branch L2 can assist the first antenna 11 in operating at multiple resonant frequencies in another operating frequency band, thereby improving the antenna efficiency of the first antenna 11. In this example, the length of the second branch L2 is less than or equal to the second preset length, thereby meeting the electrical length requirement of the first antenna. In one example, taking the operating frequency band of the second antenna as the WiFi5G operating frequency band as an example, the second preset length is less than or equal to 5mm. The values ​​of the second branch and the second preset length can be selected according to the specific scenario, and the corresponding solution falls within the scope of protection of this disclosure.

[0040] In this example, the value of the above-mentioned second preset length is related to the operating frequency band of the first antenna 11. The connection position between the feeding point of the second antenna 12 and the antenna branch, that is, the position of the return ground connection point, can be adjusted according to the operating frequency band of the first antenna 11, thereby adjusting the length of the second branch L2 to be less than or equal to the second preset length.

[0041] Based on the above content, it can be seen that in this example, at least one of the first branch L1 and the second branch L2 is used to assist the first antenna 11 in forming multiple resonant frequencies within the working frequency band, thereby improving the antenna efficiency of the first antenna while ensuring normal operation of the second antenna.

[0042] Considering that the first antenna in this example can operate in multiple operating frequency bands, for the convenience of description, the following description takes the first antenna operating in the WiFi 2.4G operating frequency band and the WiFi 5G operating frequency band as an example to describe the solutions of various embodiments.

[0043] In one embodiment, see Figure 2The second antenna includes a first tuning and matching circuit 21. With the assistance of the first tuning and matching circuit 21 and the second branch L2, the first antenna can generate two resonant frequencies in the WiFi 5G operating frequency band, for example, a resonant frequency of 5.315 GHz and a resonant frequency of 5.795 GHz. Compared with the single resonant frequency (for example, a resonant frequency of 5.315 GHz) in the WiFi 5G operating frequency band when the first antenna 11 operates alone, an additional resonant frequency of 5.795 GHz can be added. The first antenna 11 operating at two resonant frequencies can improve passive performance.

[0044] Figure 5 A circuit diagram of a second antenna is shown in FIG. Figure 5 The first tuning and matching circuit includes a first capacitor C1, a second capacitor C2, and a first inductor L1. The first end of the first capacitor C1 is electrically connected to the end of the second branch L2 away from the fracture 13, and the second end of the first capacitor C1 is electrically connected to the second capacitor C2 and the first end of the first inductor L1 respectively; the second end of the second capacitor C2 is grounded GND, and the second end of the first inductor L1 is grounded GND.

[0045] In one example, the capacitance value of the first capacitor C1 can range from 1 to 100 nF. In this example, the capacitance value of the first capacitor C1 is 33 nF. In one example, the capacitance value of the first inductor L1 can range from 1 to 100 nH. In this example, the capacitance value of the first inductor L1 is 47 nH. In one example, the capacitance value of the second capacitor C2 can range from 0.1 to 100 nF. In this example, the capacitance value of the second capacitor C2 is 0.8 pF.

[0046] In one embodiment, see Figure 3 The second antenna includes a second tuning and matching circuit 31. With the assistance of the second tuning and matching circuit 31 and the first branch L1, the first antenna can generate two resonant frequencies in the WiFi 2.4G operating frequency band, for example, a resonant frequency of 2.422 GHz and a resonant frequency of 2.746 GHz. Compared with the single resonant frequency (for example, a resonant frequency of 2.422 GHz) in the WiFi 2.4G operating frequency band when the first antenna 11 operates alone, an additional resonant frequency of 2.746 GHz can be added. The first antenna operates at the resonant frequencies of 2.422 GHz and 2.746 GHz, which can improve the passive performance of the WiFi 2.4G operating frequency band.

[0047] Continue to see Figure 5The second tuning and matching circuit 31 includes a second inductor L2, a third capacitor C3, and a third inductor L3. The first end of the second inductor L2 is electrically connected to the second end of the first capacitor C1 in the first tuning and matching circuit 21, and the second end of the second inductor L2 is electrically connected to the first end of the third capacitor C3; the second end of the third inductor L3 is electrically connected to the second end of the third capacitor C3, and the second end of the third inductor L3 is grounded.

[0048] In one example, the inductance of the second inductor L2 can range from 1 to 100 nH. In this example, the inductance of the second inductor L2 is 1.8 nH. In one example, the inductance of the third inductor L3 can range from 1 to 100 nH. In this example, the inductance of the third inductor L3 is 2.3 nH. In one example, the capacitance of the third capacitor C3 can range from 1 to 100 pF. In this example, the capacitance of the third capacitor C3 is 3.3 pF.

[0049] In one embodiment, see Figure 4 The second antenna further includes an isolation matching circuit 41 and a third tuning matching circuit 42. The input end of the isolation matching circuit 41 is electrically connected to the output end of the first tuning matching circuit 21 or the second tuning matching circuit 31, and the output end of the isolation matching circuit 41 is electrically connected to the third tuning matching circuit 42. The isolation matching circuit 41 is used to transmit the antenna signal output by the third tuning matching circuit 42 and block the antenna signal output by the first tuning matching circuit 21 or the second tuning matching circuit 31. Thus, the provision of the third tuning matching circuit 42 in this embodiment can ensure that the second antenna can operate normally. Furthermore, the provision of the isolation matching circuit 41 in this embodiment can isolate the antenna signals of the first antenna and the second antenna, ensuring that both antennas can operate normally.

[0050] Continue to see Figure 5 The third tuned matching circuit includes a third inductor L3, a fourth inductor L4, and a fourth capacitor C4. The first end of the fourth inductor L4 is electrically connected to the first end of the third inductor L3, the second end of the fourth inductor L4 is electrically connected to the first end of the fourth capacitor C4, and the second end of the fourth capacitor C4 is grounded to GND. The second end of the fourth inductor L4 is used to receive antenna signals. It is understood that the third tuned matching circuit 42 and the isolation matching circuit 41 share the third inductor L3 and the fourth inductor L4, which can reduce the number of components in the second antenna.

[0051] In one example, the inductance of the third inductor L3 can range from 1 to 100 nH. In this example, the inductance of the third inductor L3 is 2.4 nH. In one example, the inductance of the fourth inductor L4 can range from 1 to 100 nH. In this example, the inductance of the fourth inductor L4 is 1.5 nH. In one example, the capacitance of the fourth capacitor C4 can range from 1 to 100 pF. In this example, the capacitance of the fourth capacitor C4 is 5.6 pF.

[0052] Continue to see Figure 5 The first antenna 11 includes an antenna tuning and matching circuit. The antenna tuning and matching circuit includes a fifth capacitor C5 and a sixth capacitor C6. The first end of the fifth capacitor C5 and the first end of the sixth capacitor C6 are respectively electrically connected to the feed point FB1 of the first antenna. The second end of the fifth capacitor C5 transmits and receives antenna signals. The second end of the sixth capacitor C6 is connected to ground GND.

[0053] In one example, the capacitance value of the fifth capacitor C5 may range from 0.1 to 100 pF, and in this example, the capacitance value of the fifth capacitor C5 is 0.5 pF. In one example, the capacitance value of the sixth capacitor C6 may range from 0.1 to 100 pF, and in this example, the capacitance value of the sixth capacitor C6 is 0.3 pF.

[0054] based on Figure 5 The circuit diagram of the antenna module shown simulates the S11 of the first antenna. The S11 result is as follows: Figure 6 See Figure 6 The first antenna generates two resonant frequencies within the WiFi 2.4G operating frequency band: 2.422GHz and 2.746GHz. The first antenna's main resonant frequency is 2.422GHz, meaning it resonates at 2.422GHz when operating alone within the WiFi 2.4G operating frequency band. The first antenna's auxiliary resonant frequency, 2.746GHz, is generated by the first antenna with the assistance of the second antenna's first branch.

[0055] Continue to see Figure 6 The first antenna generates two resonant frequencies within the WiFi 5G operating frequency band: 5.315 GHz and 5.795 GHz. The first antenna's main resonant frequency is 5.315 GHz, meaning it's the resonant frequency of the first antenna when operating alone within the WiFi 5G operating frequency band. The first antenna's auxiliary resonant frequency, 5.795 GHz, is generated by the first antenna with the assistance of the second branch of the second antenna.

[0056] based on Figure 5The circuit diagram of the antenna module shown simulates the passive efficiency of the first antenna. The passive efficiency results are shown in Figure 7 See Figure 7 The passive efficiency peak of the first antenna in the WiFi2.4G operating frequency band is -3.7dB, the passive efficiency in the 5.15GHz sideband of the WiFi5G operating frequency band is -5.32dB, and the passive efficiency at 5.85GHz is -5.96dB.

[0057] based on Figure 5 The passive efficiency simulation comparison results of the antenna module shown and the existing antenna module are as follows Figure 8 See Figure 8 , see Figure 8 Under the same antenna size environment, the peak efficiency of the first antenna in the WiFi2.4G operating frequency band is improved by 0.45dB, and the average efficiency in the 2.4GHz-2.5GHz band is improved by 0.8dB; the sideband efficiency of the WiFi 5G operating frequency band is improved by 0.56dB at 5.15GHz and 0.68dB at 5.85GHz.

[0058] Combine Figure 7 and Figure 8 It can be seen from the simulation diagram that, without changing the first antenna and with limited antenna clearance, the position of the feeding point of the second antenna and the tuning and matching circuit of the second antenna are adjusted so that the first antenna can have an auxiliary resonant frequency around 2.8GHz in the WiFi2.4G operating frequency band (2.4GHz-2.8GHz) and an auxiliary resonant frequency around 5.8GHz in the WiFi 5G operating frequency band, which can improve the in-band efficiency of WiFi 2.4G and WiFi5G, thereby enhancing WiFi wireless performance.

[0059] Figure 9 9 is a block diagram of an electronic device according to an exemplary embodiment. For example, the electronic device 900 may be a smartphone, a computer, a digital broadcast terminal, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0060] Reference Figure 9 The electronic device 900 may include one or more of the following components: a processing component 902 , a memory 904 , a power component 906 , a multimedia component 908 , an audio component 910 , an input / output (I / O) interface 912 , a sensor component 914 , a communication component 916 , and an image acquisition component 918 .

[0061] The processing component 902 generally controls the overall operation of the electronic device 900, such as operations associated with display, phone calls, data communications, camera operation, and recording operations. The processing component 902 may include one or more processors 920 to execute computer programs. In addition, the processing component 902 may include one or more modules to facilitate interaction between the processing component 902 and other components. For example, the processing component 902 may include a multimedia module to facilitate interaction between the multimedia component 908 and the processing component 902.

[0062] The memory 904 is configured to store various types of data to support operations on the electronic device 900. Examples of such data include computer programs for any application or method operating on the electronic device 900, contact data, phone book data, messages, pictures, videos, etc. The memory 904 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0063] The power supply assembly 906 provides power to various components of the electronic device 900. The power supply assembly 906 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 900. The power supply assembly 906 may include a power chip, and the controller may communicate with the power chip to control the power chip to turn on or off the first switching device, thereby enabling the battery to supply power to the mainboard circuit or not.

[0064] The multimedia component 908 includes a screen that provides an output interface between the electronic device 900 and the target object. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input information from the target object. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor can not only sense the boundaries of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.

[0065] The audio component 910 is configured to output and / or input audio file information. For example, the audio component 910 includes a microphone (MIC), and when the electronic device 900 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive external audio file information. The received audio file information can be further stored in the memory 904 or transmitted via the communication component 916. In some embodiments, the audio component 910 also includes a speaker for outputting the audio file information.

[0066] The I / O interface 912 provides an interface between the processing component 902 and a peripheral interface module, such as a keyboard, a click wheel, a button, etc.

[0067] Sensor assembly 914 includes one or more sensors for providing various status assessments for electronic device 900. For example, sensor assembly 914 can detect the open / closed state of electronic device 900, the relative positioning of components, such as the display screen and keypad of electronic device 900. Sensor assembly 914 can also detect changes in the position of electronic device 900 or a component, the presence or absence of contact between a target object and electronic device 900, the orientation or acceleration / deceleration of electronic device 900, and changes in the temperature of electronic device 900. In this example, sensor assembly 914 may include a magnetic sensor, a gyroscope, and a magnetic field sensor, and may also include an inertial sensor, an image sensor, etc., wherein the magnetic field sensor includes at least one of the following: a Hall sensor, a thin-film magnetoresistive sensor, and a magnetic liquid acceleration sensor.

[0068] The communication component 916 is configured to facilitate wired or wireless communication between the electronic device 900 and other devices. The electronic device 900 can access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G, 9G, or a combination thereof. In an exemplary embodiment, the communication component 916 receives broadcast information or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 916 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies. In one example, the communication component includes Figures 1 to 8 The antenna module, wherein the radiation branch of the first antenna and the suspended branch of the second antenna in the antenna module are implemented by the frame of the electronic device. It is understandable that the frame of the electronic device is electrically connected to the common ground of the electronic device.

[0069] In an exemplary embodiment, the electronic device 900 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0070] In an exemplary embodiment, a chip is further provided, comprising a processor and an interface for reading a computer program through the interface to implement the above method. The chip may be a conventional CPU (central processing unit) chip, a GPU (graphics processing unit) chip, or an acceleration chip dedicated to artificial intelligence technology, such as an AI (artificial intelligence) accelerator.

[0071] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0072] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An antenna module, characterized in that: The invention comprises a first antenna and a second antenna; a slit is provided between the first antenna and the second antenna; a branch portion of the antenna between the grounding point of the second antenna and the slit constitutes a first branch portion, a branch portion of the antenna between the feeding point of the second antenna and the slit constitutes a second branch portion, and the length of the second branch portion is shorter than that of the first branch portion; At least one of the first branch and the second branch is used to assist the first antenna in forming multiple resonant frequencies within a working frequency band.

2. The antenna module according to claim 1, wherein: The length of the first branch is less than or equal to a first preset length, the length of the second branch is less than or equal to a second preset length; and the first preset length is greater than the first preset length.

3. The antenna module according to claim 2, wherein: When the first antenna includes a WiFi 2.4G operating frequency band and / or a WiFi 5G operating frequency band, the second preset length is less than or equal to 5 mm, and the first preset length is less than or equal to 25 mm.

4. The antenna module according to claim 1, wherein: When the first antenna includes a WiFi 5G operating frequency band, the second antenna includes a first tuning and matching circuit; The first antenna is used to generate two resonant frequencies in the WiFi 5G operating frequency band with the assistance of the first tuning and matching circuit and the second branch.

5. The antenna module according to claim 4, wherein: The first tuning and matching circuit includes a first capacitor, a second capacitor and a first inductor; the first end of the first capacitor is electrically connected to the end of the second branch away from the break, and the second end of the first capacitor is electrically connected to the first ends of the second capacitor and the first inductor respectively; the second end of the second capacitor is grounded, and the second end of the first inductor is grounded.

6. The antenna module according to claim 4, characterized in that: When the first antenna includes a WiFi 2.4G operating frequency band, the second antenna includes a second tuning and matching circuit; The first antenna is used to generate two resonant frequencies in the WiFi 2.4G operating frequency band with the assistance of the second tuning and matching circuit and the second branch.

7. The antenna module according to claim 6, wherein: The second tuning and matching circuit includes a second inductor, a third capacitor and a third inductor; The first end of the second inductor is electrically connected to the second end of the first capacitor in the first tuning and matching circuit, and the second end of the second inductor is electrically connected to the first end of the third capacitor; the second end of the third inductor is electrically connected to the second end of the third capacitor, and the second end of the third inductor is grounded.

8. The antenna module according to claim 4 or 6, characterized in that: The second antenna includes an isolation matching circuit and a third tuning matching circuit; the input end of the isolation matching circuit is electrically connected to the output end of the first tuning matching circuit or the second tuning matching circuit, and the output end of the isolation matching circuit is electrically connected to the third tuning matching circuit; The isolation matching circuit is used to transmit the antenna signal output by the third tuning matching circuit and block the antenna signal output by the first tuning matching circuit or the second tuning matching circuit.

9. The antenna module according to claim 8, wherein: The isolation matching circuit includes a third inductor and a fourth inductor; a first end of the fourth inductor is electrically connected to a first end of the third inductor, a second end of the fourth inductor is used to receive an antenna signal, and a second end of the third inductor is grounded.

10. The antenna module according to claim 8, wherein: The third tuning and matching circuit includes a third inductor, a fourth inductor and a fourth capacitor; the first end of the fourth inductor is electrically connected to the first end of the third inductor, the second end of the fourth inductor is electrically connected to the first end of the fourth capacitor, and the second end of the fourth capacitor is grounded; the second end of the fourth inductor is used to receive the antenna signal.

11. The antenna module according to claim 1, wherein: The first antenna includes an antenna tuning and matching circuit, which includes a fifth capacitor and a sixth capacitor; the first end of the fifth capacitor and the first end of the sixth capacitor are electrically connected to the feeding point of the first antenna respectively; the second end of the fifth capacitor transmits and receives antenna signals; and the second end of the sixth capacitor is grounded.

12. An electronic device, characterized in that: The invention comprises a frame and the antenna module according to any one of claims 1 to 11, wherein the frame is used to realize antenna branches of the first antenna and the second antenna in the antenna module.

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