Antenna module for terminal device and terminal device

Abstract

The embodiment of the present application provides an antenna module and a terminal device applied to a terminal device, which are used to solve the problem of electromagnetic interference of the baseband function module in the antenna radiation space without sacrificing the available radiation space of the antenna. Among them, the antenna module includes a main antenna and an auxiliary antenna, the baseband function module exists in the radiation space of the auxiliary antenna, and the radiation space of the main antenna is far away from the baseband function module; the main antenna is connected to the radio frequency signal path, and the auxiliary antenna is connected to the electronic switch; when the baseband function module is working, the electronic switch is used to switch the auxiliary antenna to a grounded state; when the baseband function module is not working, the electronic switch is used to switch the auxiliary antenna to an open circuit state or a matching circuit state, so that the auxiliary antenna forms a parasitic coupling relationship with the main antenna.

Description

Technical Field

[0001] The present application relates to the field of antenna design technology, and in particular to an antenna module and a terminal device applied to a terminal device. Background Art

[0002] Taking smartphones as an example, in the current design and development of 4G and 5G mobile phones, the number of antennas is increasing. If the antenna performance is to be optimized, the antenna must be given as much radiation space as possible. At the same time, 4G and 5G smartphones support more and more functions, and various baseband function modules will be added, such as cameras, receivers, light sensors, speakers, etc. These baseband function modules will generate strong electromagnetic interference (EMI) when working. However, the overall space of smartphones is limited. With the popularity of full-screen phones, when the overall structure is stacked, many baseband function modules will inevitably be distributed in various positions of the mobile phone frame, thereby occupying the radiation space of the antenna. Once some baseband function modules enter the radiation space of the antenna, the EMI generated when they work can be easily absorbed by the antenna, resulting in the deterioration of RF wireless sensitivity and affecting the quality of wireless communication.

[0003] Currently, there is an urgent need for an antenna design solution to solve the EMI interference problem generated by the baseband functional module in the antenna radiation space. Summary of the invention

[0004] The embodiments of the present application provide an antenna module and a terminal device applied to a terminal device, so as to solve the EMI interference problem of a baseband functional module in the antenna radiation space without sacrificing the available radiation space of the antenna.

[0005] In a first aspect, an embodiment of the present application provides an antenna module applied to a terminal device, the antenna module comprising a main antenna and an auxiliary antenna; wherein a baseband function module exists in a radiation space of the auxiliary antenna, and a radiation space of the main antenna is far away from the baseband function module;

[0006] The main antenna is connected to the radio frequency signal path, and the auxiliary antenna is connected to the electronic switch;

[0007] When the baseband function module is working, the electronic switch is used to switch the auxiliary antenna to a grounded state;

[0008] When the baseband function module is not working, the electronic switch is used to switch the auxiliary antenna to an open circuit state or a matching circuit connection state, and the auxiliary antenna forms a parasitic coupling relationship with the main antenna.

[0009] In a possible design, the electronic switch is also used to receive a control signal and determine the operating state of the baseband functional module according to the control signal.

[0010] In one possible design, the main antenna is also connected to an antenna tuner;

[0011] The antenna tuner is used to adjust the matching circuit connected to the main antenna according to the frequency band of the radio frequency signal.

[0012] In a possible design, the main antenna is connected to the RF signal path and the antenna tuner via a first antenna spring.

[0013] In a possible design, the auxiliary antenna is connected to the electronic switch via a second antenna spring.

[0014] In a possible design, the main antenna and the auxiliary antenna are arranged adjacent to each other.

[0015] In one possible design, the electronic switch is a single-pole multi-throw switch.

[0016] In one possible design, the baseband function module includes one or more of the following components:

[0017] Baseband sensor, camera, earpiece, speaker, light sensor or distance sensor.

[0018] In a second aspect, an embodiment of the present application provides a terminal device, wherein the terminal device includes an antenna module and a baseband functional module as described in any one of the first aspects.

[0019] In an embodiment of the present application, a baseband function module exists in the radiation space of the auxiliary antenna, and the radiation space of the main antenna is far away from the baseband function module. The state of the auxiliary antenna is switched by an electronic switch, and then whether the auxiliary antenna is effective in the entire antenna system can be controlled. When the baseband function module is working, the auxiliary antenna can be grounded to make it ineffective to absorb EMI interference; when the baseband function module is not working, the auxiliary antenna can be open-circuited or connected to a matching circuit to make it effective, forming a parasitic coupling relationship with the main antenna to improve the comprehensive radiation performance of the main antenna and the auxiliary antenna. It can be seen that the above technical solution not only makes full use of the radiation space of the antenna, but also better avoids the EMI interference generated when the baseband function module is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a schematic diagram of a mobile phone motherboard in the prior art;

[0022] Figure 2 A schematic diagram of an antenna module applied to a terminal device provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram of a workflow of an antenna module applied to a terminal device provided in an embodiment of the present application;

[0024] Figure 4 A schematic diagram of a terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0026] In the embodiments of the present application, a plurality refers to two or more than two. The words "first", "second" and the like are only used for the purpose of distinguishing descriptions and cannot be understood as indicating or implying relative importance or order.

[0027] How to effectively solve the EMI noise interference problem caused by the baseband function module to the antenna when it is working has always been a difficult problem in the industry. Figure 1 From the screenshot of a mobile phone motherboard, it can be seen that the front camera, earpiece, optical distance sensor (not shown in the picture), etc. are all on the top of the phone and very close to the antenna. The EMI noise generated when they work can be easily absorbed by the antenna, thereby affecting the wireless sensitivity of the antenna and further affecting the quality of wireless communication.

[0028] In view of the above problems, there are several solutions in the prior art:

[0029] 1. Take measures such as adequate grounding, wrapping and shielding of the baseband functional modules. This method greatly increases the cost, but still cannot completely suppress the EMI noise generated by the baseband functional modules. For example, strengthening the grounding of baseband functional modules such as cameras and speakers, wrapping them or sticking absorbing materials on them can reduce the EMI interference to a certain extent, but this method requires significant changes to the design and the effect is not ideal, and there will still be a certain degree of EMI interference.

[0030] 2. Avoid placing baseband function modules close to the antenna. This method affects the structural stacking and appearance design, reducing product competitiveness. As users are increasingly demanding on product appearance, it is almost impossible to avoid various baseband function modules from entering the antenna radiation space by changing the industrial design (ID).

[0031] 3. When debugging the antenna routing, try to avoid the baseband functional modules that generate EMI interference. This method will cause the antenna to be unable to fully and effectively utilize the space of the entire machine, so the antenna performance will inevitably be greatly reduced and it will easily lead to the company's over-the-air technology (OTA) standards or some certification tests failing to pass, and it will also affect the user's wireless communication quality experience.

[0032] In view of the shortcomings of the above various traditional solutions, the present application provides the following solution, which aims to solve the EMI interference problem of the baseband functional module in the antenna radiation space without sacrificing the available radiation space and structural stacking of the antenna.

[0033] Figure 2 An antenna module applied to a terminal device provided in an embodiment of the present application is exemplarily shown. Figure 2 As shown, the antenna module includes a main antenna and an auxiliary antenna.

[0034] Among them, there is a baseband functional module in the radiation space of the auxiliary antenna, and the radiation space of the main antenna is far away from the baseband functional module. The baseband functional module may include one or more of the following devices: a baseband sensor, a camera, a receiver, a speaker, a light sensor, a distance sensor or other electronic components used to achieve a certain function. The baseband functional module may also be called a baseband functional device, or a baseband device, or has other names, which are not specifically limited in this application. In this application, the radiation space of the antenna may refer to the radiation space of one or more frequency bands of the antenna, for example, it may be a radiation space shared by multiple frequency bands, that is, the overall radiation space of multiple frequency bands.

[0035] The main antenna is connected to the RF signal path. The main antenna can receive RF signals from the RF signal path and transmit them out, and receive RF signals from the outside and transmit them to the RF signal path, thereby completing the RF signal transmission and reception functions.

[0036] Optionally, the main antenna may also be connected to an antenna tuner, which is used to adjust the matching state of the main antenna, for example, according to the frequency band of the radio frequency signal to be received and sent, the matching circuit connected to the main antenna is adjusted, so that the main antenna has better radiation performance. Among them, adjusting the matching circuit connected to the main antenna may mean switching the main antenna to connect to a different matching circuit.

[0037] For example, Figure 2 As shown, the antenna tuner receives the control signal sent by the central processor unit (CPU) of the terminal device, and switches the main antenna between different matching states through a single-pole four-throw (SP4T) switch, thereby adjusting the radiation performance of the main antenna. For example, when the mobile terminal accesses the 3G network, the antenna tuner can be switched to the matching 1 circuit. At this time, the impedance value of the main antenna is changed by changing the value of the capacitor and / or inductor connected to the main antenna, so that the antenna adapts to the frequency band of the 3G network. Similarly, when the mobile terminal accesses the 4G or 5G network, the antenna tuner can be switched to the matching 2 or matching 3 circuit to adapt the antenna to the corresponding frequency band. Optionally, when the main antenna and the auxiliary antenna form a parasitic coupling relationship, the matching circuit connected to the main antenna can be further debugged, such as switching to the matching 4 circuit, to improve the comprehensive radiation level of the main antenna and the auxiliary antenna. The switch used by the antenna tuner can be found according to the frequency band supported by the antenna, such as single-pole double-throw (SPDT) switch, single-pole triple-throw (SP3T) switch, SP4T switch and other single-pole multi-throw switches.

[0038] In addition, the main antenna may be connected to the reference ground or may not be connected to the reference ground, which is not specifically limited in this application.

[0039] The auxiliary antenna is connected to an electronic switch. The electronic switch can be used to adjust the state of the auxiliary antenna, for example, switching the auxiliary antenna to a grounded state or an open circuit state or a matching circuit connected state. Specifically, when the baseband function module is working, the electronic switch can be used to switch the auxiliary antenna to a grounded state, thereby rendering the auxiliary antenna ineffective; when the baseband function module is not working, the electronic switch can be used to switch the auxiliary antenna to an open circuit state or a matching circuit connected state, thereby rendering the auxiliary antenna effective. At this time, the auxiliary antenna will form a parasitic coupling relationship with the main antenna, thereby enhancing the comprehensive radiation performance of the two.

[0040] The main antenna and the auxiliary antenna can be arranged adjacent to each other, and the spatial distance between them is very close. In this way, the auxiliary antenna in an open circuit state or connected to a matching circuit can form a parasitic coupling relationship with the main antenna, thereby changing the radiation state of the main antenna. In an embodiment of the present application, the placement distance between the main antenna and the auxiliary antenna can be set according to the shape of the main antenna and the auxiliary antenna, and when setting the distance, the distance between them can be adjusted to achieve better radiation performance when the main antenna and the auxiliary antenna form a parasitic coupling relationship.

[0041] The electronic switch may be a single-pole multi-throw switch, a switch of specifications such as SPDT, SP3T, SP4T, etc., and this application does not make any specific limitation.

[0042] For example, Figure 2 As shown, the auxiliary antenna is connected to the input end (also called the moving end) of the SPDT switch, port 1 of the output end (also called the fixed end) of the SPDT switch is connected to the reference ground, and port 2 is open circuited or connected to the matching circuit. After the SPDT switch receives the control signal from the CPU, it switches the port connected to the switch, thereby changing the connection state of the auxiliary antenna, i.e., grounded, open circuited, or connected to the matching circuit.

[0043] In a possible implementation, the main antenna can be connected to the RF signal path and the antenna tuner through the first antenna shrapnel, and the auxiliary antenna can be connected to the electronic switch through the second antenna shrapnel. Optionally, the main antenna can also be connected to the reference ground through the third antenna shrapnel. The function of the antenna shrapnel is to fix the antenna to the motherboard of the terminal device so that the terminal device forms an electrical connection with the antenna. The present application is not limited to the use of antenna shrapnel, and other devices with connection and fixing functions can also be used.

[0044] The terminal device in the embodiment of the present application may be a terminal device with an antenna module, such as a smart phone, a smart watch, a wearable wireless communication device, etc., and the present application does not make any specific limitation.

[0045] It can be seen that when the baseband function module is working, only the main antenna is effective. By adjusting the antenna tuner, the main antenna can adapt to different RF bands and obtain better radiation performance. When the baseband function module is not working, the parasitic coupling relationship between the main antenna and the auxiliary antenna will change the radiation performance of the main antenna. At this time, by further debugging the matching circuit corresponding to the antenna tuner connected to the main antenna, the comprehensive radiation performance of the main antenna and the auxiliary antenna can be improved, so that the antenna RF sensitivity reaches the optimal level.

[0046] In order to more clearly understand the embodiments of the present application, the composition of the antenna module is specifically introduced below.

[0047] The main antenna is used to transmit and receive radio frequency signals. The radiation space it uses avoids the baseband function module, so the radiation performance is limited to a certain extent and cannot reach the ideal level. However, the main antenna can maximize the use of the antenna radiation space by forming a parasitic coupling relationship with the auxiliary antenna, and at the same time cooperate with the matching state of the antenna tuner to improve the radiation performance.

[0048] The auxiliary antenna is used to change the radiation performance of the main antenna. The radiation space used is the space where the baseband function module is located, so it is easy to absorb the EMI interference of the baseband function module. When the baseband function module is working, the EMI interference can be directed to the ground by grounding the auxiliary antenna to avoid the impact of EMI interference on the radiation performance of the main antenna. When the baseband function module is not working, the auxiliary antenna realizes parasitic coupling with the main antenna by opening the circuit, thereby improving the comprehensive radiation performance of the main antenna and the auxiliary antenna.

[0049] The antenna shrapnel is located on the mobile phone motherboard and is used for electrical connection between the motherboard and the antenna. In the embodiments of the present application, some antenna shrapnel can be directly grounded, some antenna shrapnel are connected to the circuit routing of the radio frequency signal, and some antenna shrapnel are connected to the antenna tuner or electronic switch. Among them, the grounded antenna shrapnel can be used to realize the ground return path of the antenna, the antenna shrapnel connected to the radio frequency signal circuit routing can be used to realize the radiation and reception of the radio frequency signal by the antenna, and the antenna shrapnel connected to the electronic switch can be used to change the state of the antenna (such as different states such as grounding, open circuit and matching value change).

[0050] The antenna tuner (tuner) is connected to the antenna shrapnel used by the main antenna, and is used to change the matching circuit connected to the main antenna, so that the main antenna can better adapt to different RF bands. When the baseband function module is not working, the parasitic coupling relationship between the main antenna and the auxiliary antenna will change the radiation performance of the main antenna. At this time, the matching circuit corresponding to the antenna tuner can be further debugged to improve the comprehensive radiation performance of the main antenna and the auxiliary antenna, so that the antenna RF sensitivity reaches the most ideal level. It should be noted that the antenna tuner here can be searched according to the frequency band supported by the antenna, such as using SPDT, SP3T, SP4T and other specifications, which are not specifically limited in this application.

[0051] An electronic switch is used to change the connection state of the auxiliary antenna. Taking a single-pole double-throw switch as an example, the moving end of the single-pole double-throw switch is connected to the antenna shrapnel used for the auxiliary antenna, the port 1 of the fixed end is connected to the ground, and the port 2 of the fixed end is connected to an open circuit state or connected to a matching circuit. When the baseband function module is working, the electronic switch is switched to port 1 to ensure that the auxiliary antenna is in a grounded state, so that the auxiliary antenna can directly conduct the EMI interference absorbed from the baseband function module to the ground, so that the EMI interference of the baseband function module will not be absorbed by the main antenna. When the baseband function module is not working, the electronic switch is switched to port 2. At this time, the auxiliary antenna is in an open circuit state. Since the main antenna and the auxiliary antenna are very close, a strong parasitic coupling relationship is formed between them, thereby changing the radiation performance of the main antenna. Combined with the antenna tuner used by the main antenna, the comprehensive radiation performance of the main antenna and the auxiliary antenna is finally optimized. It should be noted that the electronic switch used here to change the state of the antenna (grounded or open circuit or connected to a matching circuit) can be but is not limited to an SPDT single-pole double-throw switch, and can also be changed to a switch of SPST, SP3T, SP4T or other specifications according to debugging needs.

[0052] Baseband function modules refer to baseband sensors or other functional devices that must be placed in the antenna radiation space due to limitations such as appearance design and structural stacking, such as cameras, receivers, speakers, light sensors, distance sensors, etc. These modules or devices will inevitably generate EMI interference of varying strengths when working, but will not generate EMI interference when not working.

[0053] In order to more clearly understand the embodiments of the present application, Figure 3 The specific working process of the antenna module in the technical solution of this application is described in detail.

[0054] Step 301 , the CPU determines whether the baseband function module is working, if so, executes step 302 ; if not, executes step 304 .

[0055] Step 302: The CPU configures the driving code and sends a control signal to the electronic switch and the antenna tuner. After receiving the control signal, the electronic switch and the antenna tuner execute steps 303a and 303b respectively.

[0056] Step 303a: The electronic switch is switched to a grounding state.

[0057] When the baseband function module is working, EMI interference will be generated. After receiving the working signal of the baseband function module, the CPU configures the driving code and sends a control signal to the electronic switch to control the electronic switch to switch the auxiliary antenna to the ground state (such as Figure 2Switch the electronic switch to port 1). The auxiliary antenna in the grounded state can guide the EMI interference generated by the baseband function module to the ground. And because the auxiliary antenna is in the grounded state, it is completely independent of the main antenna. Therefore, the main antenna and the auxiliary antenna will not produce parasitic coupling effects, and the auxiliary antenna will not affect the radiation performance of the main antenna. At this time, the main antenna serves as a working antenna to receive and transmit RF signals. Since the radiation space of the main antenna is limited, it cannot achieve the best radiation state, but the radiation space of the main antenna avoids the space where the baseband function module is located, so it is not affected by the EMI interference of the baseband function module.

[0058] Step 303b: Change the matching state of the antenna tuner.

[0059] By changing the matching circuit connected to the main antenna, the main antenna can better adapt to different radio frequency bands.

[0060] Step 304: The CPU configures the driving code and sends a control signal to the electronic switch and the antenna tuner. After receiving the control signal, the electronic switch and the antenna tuner execute steps 305a and 305b respectively.

[0061] Step 305a: The electronic switch is switched to an open circuit state or a matching circuit state.

[0062] When the baseband function module is not working, no EMI interference will be generated. After receiving the signal that the baseband function module is not working, the CPU configures the drive code and sends a control signal to the electronic switch to control the electronic switch to switch the auxiliary antenna to an open circuit state (such as Figure 2 Switch the electronic switch to port 2). When the baseband function module is not working, no EMI interference is generated, so there is no EMI interference on the auxiliary antenna. Since the auxiliary antenna and the main antenna are set adjacent to each other and the spatial distance is very close, the auxiliary antenna in the open circuit state can form a parasitic coupling relationship with the main antenna, thereby changing the radiation state of the main antenna, thereby improving the comprehensive radiation performance of the main antenna and the auxiliary antenna. At this time, the main antenna and the auxiliary antenna work together to maximize the use of the antenna radiation space and achieve the best radiation performance.

[0063] Port 2 of the electronic switch can also be connected to a matching circuit, that is, when the baseband function module is not working, the electronic switch switches the auxiliary antenna to a matching circuit state according to a control signal. The matching circuit may include one or more capacitors and / or inductors, and the impedance value of the matching circuit connected to the auxiliary antenna is changed by changing the capacitance value and / or inductance value, thereby changing the radiation performance of the auxiliary antenna. Since the auxiliary antenna forms a parasitic coupling relationship with the main antenna at this time, the impedance value of the matching circuit connected to the auxiliary antenna can be adjusted to achieve the best comprehensive radiation performance of the main antenna and the auxiliary antenna.

[0064] Step 305b: Change the matching state of the antenna tuner.

[0065] By changing the matching circuit connected to the main antenna, the main antenna and the auxiliary antenna forming a parasitic coupling relationship can better adapt to different radio frequency bands.

[0066] The following is combined with the experimental data in Table 1 to further illustrate the improvements of the antenna module provided in the present application in terms of wireless sensitivity and baseband functional module EMI interference compared with the traditional single antenna solution.

[0067] Table 1

[0068]

[0069] Table 1 shows the measured antenna wireless sensitivity and EMI interference of the baseband function module of the traditional single antenna solution 1, the traditional single antenna solution 2 and the solution of the present application when the baseband function module is working and not working.

[0070] Traditional single antenna solution 1: In order to optimize the antenna performance during design, the baseband function module exists in the antenna's radiation space, which will cause the EMI interference of the baseband module to be easily absorbed by the antenna when it is working, thus causing great interference to the antenna's wireless sensitivity. Referring to the data in Table 1, when the baseband function module is not working, the antenna performance is very good and the wireless sensitivity can reach -110dBm, but when the baseband function module is working, the baseband function module generates 10dB of EMI interference, and the antenna's wireless sensitivity can only reach -100dBm.

[0071] Traditional single antenna solution 2: In order to avoid EMI interference from the baseband function module during design, the antenna radiation space is kept away from the space where the baseband function module is located as much as possible during antenna debugging. This makes antenna debugging very difficult, and it is impossible to achieve the maximum application of the antenna radiation space, and may even fail to meet the company's OTA standards. Referring to the data in Table 1, since the antenna avoids the space occupied by the baseband function module, there is no EMI interference whether the baseband function module is working or not, but the antenna's wireless sensitivity can only reach -108dBm, which cannot reach -110dBm under the best space conditions, with a 2dB sacrifice.

[0072] In the technical solution of the present application, the antenna module is designed to include two antennas, namely the main antenna ant1 and the auxiliary antenna ant2. Ant1 avoids the space occupied by the baseband functional module, similar to the traditional single antenna solution 2, and ant2 makes full use of the space occupied by the baseband functional module. When ant1 and ant2 work together through parasitic coupling, it is equivalent to the traditional single antenna solution 1, that is, the radiation space of ant1 and ant2 is used to optimize the wireless sensitivity of the antenna. Referring to the data in Table 1, when the baseband functional module is not working, ant2 and ant1 work together to achieve the maximum wireless sensitivity of -110dBm. When the baseband functional module is working, ant2 fails, and all wireless sensitivity is provided by ant1, which is -108dBm.

[0073] Compared with the traditional solution 1, the present application solution can improve the wireless sensitivity of the baseband function module from -100dBm to -108dBm when it is working. That is, although there is a 2dB loss due to the limitation of the spatial antenna performance, the 10dB EMI interference is avoided, and the overall improvement is still 8dB.

[0074] Compared with the traditional solution 2, the present application solution can improve the wireless sensitivity from -108dBm to -110dBm when the baseband function module is not working. Since all antenna spaces are used to the maximum extent, the radiation performance of the antenna is improved by 2dB.

[0075] In summary, the antenna module provided by the present application can reduce the EMI interference of the baseband function module in the antenna radiation space to the antenna. Overall, the wireless sensitivity of the antenna is significantly improved when the baseband function module is working and not working, ensuring that the terminal device has the best wireless communication performance, which has significant advantages over the traditional single antenna solution.

[0076] The embodiment of the present application provides an antenna module for terminal equipment, including a main antenna and an auxiliary antenna, wherein the radiation space of the main antenna is far away from the baseband function module, which can effectively avoid its absorption of the EMI noise of the baseband function module, and the radiation space of the auxiliary antenna fully utilizes the space where the baseband function module is located, which can improve the overall radiation performance of the antenna when the baseband function module is not working. The present application not only fully utilizes the radiation space of the antenna, but also better avoids the EMI interference problem generated when the baseband function module is working, and ensures the wireless sensitivity index of the antenna in various scenarios, thereby improving the user's call quality or Internet experience.

[0077] Figure 4 A terminal device provided in an embodiment of the present application is exemplarily shown, and the terminal device 400 includes the antenna module 410 and the baseband function module 420 described in the above embodiment.

[0078] The antenna module includes a main antenna and an auxiliary antenna, wherein the placement positions of the main antenna and the auxiliary antenna and the distance between the two antennas can be set according to factors such as the specific structure of the terminal device and the position of the baseband function module.

[0079] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0080] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0081] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0082] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0083] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An antenna module applied to a terminal device, characterized in that: The antenna module includes a main antenna and an auxiliary antenna; wherein a baseband function module exists in the radiation space of the auxiliary antenna, and the radiation space of the main antenna is far away from the baseband function module; The main antenna is connected to the radio frequency signal path, and the auxiliary antenna is connected to the electronic switch; When the baseband function module is working, the electronic switch is used to switch the auxiliary antenna to a grounded state; When the baseband function module is not working, the electronic switch is used to switch the auxiliary antenna to an open circuit state or a matching circuit connection state, and the auxiliary antenna forms a parasitic coupling relationship with the main antenna.

2. The antenna module according to claim 1, characterized in that: The electronic switch is also used to receive a control signal and determine the working state of the baseband function module according to the control signal.

3. The antenna module according to claim 1, characterized in that: The main antenna is also connected to an antenna tuner; The antenna tuner is used to adjust the matching circuit connected to the main antenna according to the frequency band of the radio frequency signal.

4. The antenna module according to claim 3, characterized in that: The main antenna is connected to the radio frequency signal path and the antenna tuner through a first antenna spring.

5. The antenna module according to claim 4, characterized in that: The auxiliary antenna is connected to the electronic switch via a second antenna spring.

6. The antenna module according to claim 1, characterized in that: The main antenna is arranged adjacent to the auxiliary antenna.

7. The antenna module according to claim 1, characterized in that: The electronic switch is a single-pole multi-throw switch.

8. The antenna module according to claim 1, characterized in that: The baseband function module includes one or more of the following components: Baseband sensor, camera, earpiece, speaker, light sensor or distance sensor.

9. A terminal device, characterized in that: The terminal device comprises an antenna module and a baseband functional module as described in any one of claims 1 to 8.

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