CN115377660A

CN115377660A - Antenna module and terminal equipment

Info

Publication number: CN115377660A
Application number: CN202110558743.0A
Authority: CN
Inventors: 刘豫青
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2022-11-22

Abstract

The disclosure relates to an antenna module and a terminal device. The antenna module includes: a first radiator; the feed point is positioned on the first radiator; the second radiator is arranged at intervals with the first radiator; when the first radiator and the second radiator are coupled and then transmit and receive wireless signals together, the first radiator and the second radiator have the same current flow direction. In the embodiment of the disclosure, when receiving and transmitting wireless signals, the total current of the antenna module does not cause the situation that the currents are mutually offset due to the fact that the current directions are opposite, so that the phase of the current in the antenna module can be increased, and the working bandwidth of the antenna module can be expanded.

Description

Antenna module and terminal equipment

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to an antenna module and a terminal device.

Background

With the rapid development of communication technology and the scientific and technological requirements, the antenna of the terminal device has been developed from an external antenna of a single frequency band, such as a monopole antenna, to an internal antenna, such as an inverted-F antenna (IFA) inverted-F antenna or a loop antenna. A branch is led out beside a feed position of the existing built-in antenna, the branch is close to a main branch of the built-in antenna to be wired, and bandwidth expansion is achieved through coupling of the main branch and the branch. However, the current flowing direction of the branch and the current flowing direction of the main branch are opposite to each other, so that the bandwidth expansion of the internal antenna is limited.

Disclosure of Invention

The present disclosure provides an antenna module and a terminal device.

In a first aspect of the embodiments of the present disclosure, an antenna module is provided, which includes:

a first radiator;

the feed point is positioned on the first radiator;

the second radiator is arranged at an interval with the first radiator; when the first radiator and the second radiator receive and transmit wireless signals together, the first radiator and the second radiator have the same current flow direction.

In some embodiments, the second radiator has a free end, and the free end is an extension end of the second radiator extending from the second radiator ground point to the feed point;

the suspended end and the feeding point are positioned on the first side of the antenna module;

the grounding point of the first radiator and the grounding point of the second radiator are positioned on the second side of the antenna module; the second side is an opposite side of the first side.

In some embodiments, the first radiator and the second radiator are located on the same plane;

or the second radiator is located on the upper layer of the first radiator.

In some embodiments, the second radiator is located in a space surrounded by the first radiator.

In some embodiments, the first radiator and the second radiator are both shaped as a ring with an opening.

In some embodiments, a distance between the ground point and the feed point of the second radiator is greater than a preset distance.

In some embodiments, the predetermined distance is in a range of 7 mm to 10 mm.

In some embodiments, the antenna module further comprises:

and the tuning assembly is connected with the second radiator, and the antenna module receives and transmits wireless signals of different frequency bands when the tuning assembly has different impedances.

In some embodiments, the second radiator has a free end;

the tuning assembly is connected at the flying end.

In some embodiments, the tuning assembly includes an inductance and a controlled switch connected to the inductance;

when the controlled switch is in a closed state, the tuning component has a first impedance, and the antenna module receives and transmits a wireless signal of a first frequency band;

when the controlled switch is in an off state, the tuning component has a second impedance, and the antenna module receives and transmits a wireless signal of a second frequency band.

In some embodiments, the first radiator and the second radiator are located on the same plane.

In a second aspect of the embodiments of the present disclosure, a terminal device is provided, where the terminal device includes the antenna module of the first aspect.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

in the embodiment of the present disclosure, the feed point is located on the first radiator, and when the first radiator and the second radiator receive and transmit the wireless signal jointly after being coupled, the first radiator and the second radiator have the same current flow direction. Therefore, when the wireless signal is received and sent, the total current of the antenna module can not be offset due to the fact that the current directions are opposite, the phase of the current in the antenna module can be increased, and the working bandwidth of the antenna module can be expanded.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

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

Fig. 1 is a first schematic structural diagram of an antenna module according to an exemplary embodiment.

Fig. 2 is a schematic structural diagram of an antenna module according to an exemplary embodiment.

Fig. 3 is a schematic structural diagram three of an antenna module according to an exemplary embodiment.

Fig. 4 is a first schematic structural diagram of a terminal device according to an exemplary embodiment.

Fig. 5 is a schematic structural diagram ii of a terminal device according to an exemplary embodiment.

Fig. 6 is a schematic diagram illustrating a current flow of an antenna module in a terminal device according to an exemplary embodiment.

Fig. 7 is a return loss waveform diagram of a terminal device shown in accordance with an example embodiment.

Fig. 8 is a block diagram illustrating a terminal device according to an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

Fig. 1 is a first schematic structural diagram of an antenna module according to an exemplary embodiment. As shown in fig. 1, the antenna module at least includes:

a first radiator 101;

a feeding point 102 located on the first radiator 101;

a second radiator 103 spaced apart from the first radiator 101; when the first radiator 101 and the second radiator 103 transmit and receive wireless signals together, the first radiator 101 and the second radiator 103 have the same current flow direction.

The antenna module is applied to a terminal device, and can be applied to wireless communication scenarios such as Bluetooth (BT), wireless fidelity (WiFi), universal Mobile Telecommunications System (UMTS), long Term Evolution (LTE), and the like. The terminal device may be a wearable electronic device or a mobile terminal. The mobile terminal comprises a mobile phone, a notebook or a tablet computer; this wearable electronic equipment includes intelligent wrist-watch or intelligent bracelet, and this disclosed embodiment does not make the restriction.

The first radiator may be made of a conductive material. The embodiment of the present disclosure may print a conductive material on the inner side of the terminal device case to form the radiator, may also attach the conductive material to the substrate of the flexible circuit board to form the radiator, and may also reuse the conductive case of the terminal device as the radiator, which is not limited in the embodiment of the present disclosure.

Wherein the conductive material includes, but is not limited to, metal, alloy or conductive plastic.

The first radiator can be connected with a radio frequency front end component of the antenna module and is used for receiving a first electric signal generated by the radio frequency front end component and radiating a wireless signal under the excitation of the first electric signal; the first radiator can also be used for converting the received wireless signals into second electric signals and transmitting the second electric signals to the radio frequency front end component to achieve the reception of the wireless signals.

Wherein the radio frequency front end component comprises: the antenna comprises a first amplifier, an antenna switch, a filter, a duplexer and a second amplifier. The first amplifier is used for amplifying the electric signal in the signal output channel. The antenna switch is used for realizing the switching between the receiving of the electric signals and the transmitting of the electric signals and the switching between different frequency bands of the antenna. The filter is used for filtering signals outside the specific frequency band through the signals of the specific frequency band. The duplexer is used for isolating the transmitted electric signal and the received electric signal, so that the antenna can normally work when receiving and transmitting wireless signals simultaneously. The second amplifier is used for realizing the electric signal amplification of the signal receiving channel. Therefore, the radio frequency front end component can receive and transmit electric signals, and the first radiator can better receive and transmit wireless signals.

The feed point is a connection point of the feeder line and the first radiator and is used for transmitting an electric signal. The feed point may transmit a first electrical signal received from the feed line to the first radiator, so that the first radiator radiates a wireless signal under excitation of the first electrical signal; and the second electric signal obtained by converting the wireless signal by the first radiator can be received and transmitted to the radio frequency front end component of the antenna module through the feeder line, so that the wireless signal in the antenna module is received.

The second radiator and the first radiator may be made of the same conductive material, or may be made of different conductive materials. For example, the first radiator is made of metal, and the second radiator is made of alloy. For another example, the first radiator is made of metal, and the second radiator is made of conductive plastic.

The second radiator and the first radiator are arranged at intervals. When the first radiator is excited to generate an alternating magnetic field based on a first electric signal output by the feed point, the second radiator can generate alternating current under the action of the alternating magnetic field and can generate the alternating magnetic field based on the alternating current, and then the second radiator can be coupled with the first radiator to jointly receive and transmit wireless signals.

The second radiator has a free end, which is an extension end of the second radiator extending from the grounding point of the second radiator to the feeding point. In the embodiment of the present disclosure, the suspension end may be disposed around the feeding point, so that the first radiator and the second radiator can be better coupled.

In the embodiment of the present disclosure, a distance between the first radiator and the second radiator is smaller than a distance threshold, and the distance threshold may be set according to a coverage distance of the alternating magnetic field generated by the first radiator. For example, the distance threshold may be set to be less than or equal to the coverage distance. In this way, by setting the distance between the first radiator and the second radiator to be smaller than the distance threshold, the second radiator can be located within the range of the alternating magnetic field generated by the first radiator, so that the second radiator can transmit and receive the wireless signal together with the first radiator.

The first radiator and the second radiator have the same current flow direction, and include: the flow direction of the partial current on the first radiator is the same as that of the partial current on the second radiator; or the flow direction of partial current on the first radiator is the same as the flow direction of all current on the second radiator.

Wherein, the current flow direction is the same includes: the current of the first radiator and the current of the second radiator both flow to the first direction or the current of the first radiator and the current of the second radiator both flow to the second direction; wherein the second direction is opposite to the first direction.

In some embodiments, in the process that the current of the first radiator flows from the feeding point to the grounding point of the first radiator and the current of the second radiator flows to the grounding point of the second radiator, the current of the first radiator and the current of the second radiator can both flow to the same side by locating the grounding point of the first radiator and the grounding point of the second radiator at the same side of the antenna module, so that the first radiator and the second radiator have the same current flow direction.

In the embodiment of the disclosure, the feeding point is located on the first radiator, and when the first radiator and the second radiator transmit and receive the wireless signal together, the first radiator and the second radiator have the same current flow direction. That is to say, when receiving and dispatching radio signal, the total current of antenna module can not appear because of the opposite circumstances that leads to the electric current to offset each other of current direction, and then can increase the phase place of electric current in the antenna module, can expand the operating bandwidth of antenna module.

In some embodiments, as shown in fig. 2, the second radiator 103 has a free end 106, where the free end 106 is an extension end of the second radiator 103 extending from the second radiator ground point 104 to the direction of the feeding point 102;

the suspended end 106 and the feeding point 102 are located on a first side of the antenna module;

the grounding point 105 of the first radiator and the grounding point 104 of the second radiator are positioned on the second side of the antenna module; the second side is an opposite side of the first side.

In an embodiment of the present disclosure, the second radiator extends from a grounding point of the second radiator to a direction of the feeding point, and includes: the second radiator can extend towards the direction of the feed point along the curve, so that the suspended end of the second radiator is close to the feed point; alternatively, the second radiator may extend in the direction of the feed point along the meander line such that the free end of the second radiator is close to the feed point.

And the grounding point of the second radiator extends to the suspended end in the direction of the feed point to form a second radiator. The extending direction may be a first direction; in some embodiments, the ground point of the first radiator may be located in a second direction of the feed point, the second direction being opposite to the first direction.

In the embodiment of the disclosure, the antenna module is located in the terminal device, and the shape of the shell of the terminal device is rectangular; in some embodiments, the terminal device includes a first long side and a second long side opposite to the first long side, where the first side may be a side where the first long side is located, and the second side may be a side where the second long side is located. In other embodiments, the terminal device further includes a first short side and a second short side opposite to the first short side, where the first side may be a side where the first short side is located, and the second side may be a side where the second short side is located.

The suspension end and the feeding point are located on the first side of the antenna module, the suspension end and the feeding point are arranged at intervals, and the suspension end and the feeding point can be located on the same straight line of the first side and can also be located on different straight lines of the first side in the process of arranging the suspension end and the feeding point at intervals on the first side.

And the grounding point of the first radiator and the grounding point of the second radiator are both connected with the ground wire. In some embodiments, the grounding point of the first radiator and the grounding point of the second radiator may be connected to a grounding layer of a terminal device having the antenna module.

In the embodiment of the disclosure, the suspension end and the feed point are located on the first side of the antenna module; the grounding point of the first radiator and the grounding point of the second radiator are located on the second side of the antenna module. Thus, when the first radiator receives and transmits the wireless signal, the current of the first radiator flows from the feed point to the grounding point of the first radiator, namely the current direction of the first radiator flows from the first side to the second side; when the second radiator receives and transmits a wireless signal, the current of the second radiator flows from the suspended end to the grounding point of the second radiator, that is, the current direction of the second radiator also flows from the first side to the second side, so that the first radiator and the second radiator have the same current flow direction.

In some embodiments, as shown in fig. 2, the second radiator 103 is located in a space surrounded by the first radiator 101.

In the embodiment of the present disclosure, the ground point of the second radiator is located between the feed point and the ground point of the first radiator, and the free end is located between the feed point and the ground point of the second radiator.

In other embodiments, the first radiator may be further located in a space surrounded by the second radiator.

In the embodiment of the present disclosure, the feed point is located between the free end and the ground point of the first radiating body, and the ground point of the first radiating body is located between the feed point and the ground point of the second radiating body.

or the second radiator is positioned on the upper layer of the first radiator.

When the first radiator and the second radiator are located on the same plane, the first radiator and the second radiator may both be disposed on a middle frame, a frame, or a back shell in the terminal device, where the middle frame and the frame are located in the terminal device having the antenna module.

When the second radiator is positioned on the upper layer of the first radiator, the first radiator can be arranged on the middle frame, and the second radiator can be arranged on the back shell; or the first radiator and the second radiator are respectively disposed on two surfaces of the middle frame, which are disposed opposite to each other, and the embodiments of the present disclosure are not limited.

In some embodiments, as shown in fig. 2, the first radiator and the second radiator are both shaped as a ring with an opening.

The shape of the first radiator and the shape of the second radiator may be the same shape, or may be different shapes, and the embodiment of the present disclosure is not limited.

The ring shape includes a square ring shape, a circular ring shape, or a triangular ring shape, and embodiments of the present disclosure are not limited.

In the embodiment of the present disclosure, the antenna module may be formed by two loop antennas, and the two loop antennas are coupled to receive and transmit wireless signals together.

In some embodiments, a distance between the ground point of the second radiator and the feed point is greater than a preset distance.

In the embodiment of the disclosure, by setting the distance between the ground point and the feed point of the second radiator to be greater than the preset distance, the radiation length of the second radiator can meet the preset requirement, and the coupling efficiency of the first radiator and the second radiator is improved; and, through setting up the distance between the earth point of second radiator and the feed point to be greater than and predetermine the distance, can increase the syntropy electric current of second radiator and first radiator, reduce the coupling current that produces on the second radiator for the total current of antenna module can not appear because of the current direction looks the opposite condition that leads to the electric current to offset each other, and then can increase the phase place of electric current in the antenna module, can expand the work bandwidth of antenna module.

In the embodiment of the present disclosure, the preset distance may be set according to actual needs. In some embodiments, the predetermined distance is in a range of 7 mm to 10 mm.

In some embodiments, the antenna module further comprises:

In the embodiment of the present disclosure, when the tuning element has different impedances, the impedance of the antenna module also changes, and thus the frequency band of the antenna module for receiving and transmitting the wireless signal is affected.

In the embodiments of the present disclosure, the tuning module may be formed by at least one component, and the component includes an inductor, a capacitor, a resistor, or a switch component, which is not limited by the embodiments of the present disclosure.

Illustratively, the tuning module may be a packaged tuner of a particular model, for example, the model of the tuner may be QAT3550. It should be noted that the tuning module of the embodiment of the present disclosure may also utilize an unpackaged tuner composed of one or more components, and is not limited to the QAT3550 described above.

In the embodiment of the disclosure, the tuning assembly is added in the antenna module, so that the receiving and transmitting frequency bands of the antenna module can be enlarged, the antenna module can support more frequency bands, and the requirements of different communication scenes are met.

In some embodiments, as shown in fig. 3, the second radiator 103 has a free end 106;

the tuning assembly 107 is connected at the free end 106.

In an embodiment of the present disclosure, the free end of the second radiator may be an extension end of the second radiator extending from the grounding point of the second radiator to the feeding point.

The suspension end is arranged at intervals with the ground wire and the feed point respectively, so that the second radiator is in an open circuit at the suspension end.

In the embodiment of the disclosure, the tuning component is connected to the suspension end, so that the tuning range of the antenna module can be increased.

In some embodiments, the tuning assembly comprises an inductance and a controlled switch connected to the inductance;

the tuning components have different impedances when the controlled switch is in a closed state or an open state.

In other embodiments, the tuning assembly may further include a capacitor connecting the inductor and the controlled switch.

The tuning components also have different impedances when the controlled switch is in a closed state or an open state.

The embodiment of the disclosure also provides a terminal device, which includes the antenna module in one or more embodiments.

The terminal device can be a wearable electronic device and a mobile terminal, the mobile terminal comprises a mobile phone, a notebook or a tablet computer, the wearable electronic device comprises a smart watch or a smart bracelet, and the embodiment of the disclosure is not limited.

In the embodiment of the disclosure, the feeding point is located on the first radiator, and when the first radiator and the second radiator are coupled and then transmit and receive the wireless signal together, the first radiator and the second radiator have the same current flow direction. That is to say, when receiving and dispatching radio signal, the total current of antenna module can not appear because of the opposite circumstances that leads to the electric current to offset each other of current direction, and then can increase the phase place of electric current in the antenna module, can expand the operating bandwidth of antenna module.

In some embodiments, the terminal device comprises: a ground plane;

and the grounding point of the first radiator and the grounding point of the second radiator are both connected with the grounding layer.

Exemplarily, as shown in fig. 4 and 5, the ground point 105 of the first radiator and the ground point 104 of the second radiator are both connected to the ground layer 201; the second radiator 103 and the first radiator 101 are arranged at intervals; the second radiator 103 is located in the space surrounded by the first radiator 101, the ground point 104 of the second radiator is located between the feeding point 102 and the ground point 105 of the first radiator, and the free end 106 is located between the feeding point 102 and the ground point 104 of the second radiator.

As shown in fig. 6, when the first radiator 101 and the second radiator 103 transmit and receive wireless signals together, the first radiator 101 and the second radiator 103 have the same current flow direction. Therefore, when the antenna module receives and transmits the wireless signals, the total current of the antenna module can not be offset due to the fact that the current directions are opposite, the phase of the current in the antenna module can be increased, and the working bandwidth of the antenna module can be expanded.

As shown in fig. 7, the dotted line represents a return loss curve of the first radiator and the second radiator after coupling, in which the current direction is reversed; the solid line corresponds to a return loss curve in which the first radiator and the second radiator have the same current direction. As can be seen from the dashed line frame in fig. 7, when the first radiator and the second radiator receive and transmit wireless signals in the 4G to 6G frequency bands, a dashed curve has a steep drop, which easily causes efficiency depression; for the dotted line, the curve of solid line is more gentle, can effectively reduce antenna module group receiving and dispatching radio signal and appear the sunken condition of efficiency, has improved antenna module group's transceiving performance.

It should be noted that "first" and "second" in the embodiments of the present disclosure are merely for convenience of description and distinction, and have no other specific meanings.

Fig. 8 is a block diagram illustrating a terminal device according to an example embodiment. For example, the terminal device may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 8, the terminal device may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.

The processing component 802 typically controls overall operation of the terminal device, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the terminal device. Examples of such data include instructions for any application or method operating on the terminal device, contact data, phonebook data, messages, pictures, videos, etc. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices, 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 or optical disks.

The power component 806 provides power to various components of the terminal device. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the terminal device.

The multimedia component 808 includes a screen that provides an output interface between the terminal device and the user. 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 an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. When the terminal device is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the terminal device is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

Sensor component 814 includes one or more sensors for providing various aspects of state assessment for the terminal device. For example, sensor assembly 814 may detect the open/closed status of the terminal device, the relative positioning of components, such as a display and keypad of the terminal device, the change in position of the terminal device or a component of the terminal device, the presence or absence of user contact with the terminal device, the orientation or acceleration/deceleration of the terminal device, and the change in temperature of the terminal device. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object in the absence of any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communication between the terminal device and other devices in a wired or wireless manner. The terminal device may access a wireless network based on a communication standard, such as WiFi,2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may 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 an exemplary embodiment, the terminal device 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, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements 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 invention is limited only by the appended claims.

Claims

1. An antenna module, characterized in that, the antenna module includes:

a first radiator;

the feed point is positioned on the first radiator;

the second radiator is arranged at intervals with the first radiator; when the first radiator and the second radiator receive and transmit wireless signals together, the first radiator and the second radiator have the same current flow direction.

2. The antenna module of claim 1, wherein the second radiator has a free end, the free end being an extended end of the second radiator extending from the second radiator ground point in a direction of the feed point;

the suspended end and the feeding point are positioned on a first side of the antenna module;

the grounding point of the first radiator and the grounding point of the second radiator are positioned on the second side of the antenna module; the second side is opposite the first side.

3. The antenna module of claim 2, wherein the first radiator and the second radiator are located on a same plane;

or the second radiator is located on the upper layer of the first radiator.

4. The antenna module of claim 2, wherein the second radiator is located in a space surrounded by the first radiator.

5. The antenna module according to any one of claims 1 to 4, wherein the first radiator and the second radiator are both shaped as a ring having an opening.

6. The antenna module of any one of claims 1 to 4, wherein a distance between the ground point of the second radiator and the feed point is greater than a predetermined distance.

7. The antenna module of claim 6, wherein the predetermined distance is in a range of 7 mm to 10 mm.

8. The antenna module of any one of claims 1-4, wherein the antenna module further comprises:

9. The antenna module of claim 8, wherein the second radiator has a free end;

the tuning assembly is connected at the flying end.

10. The antenna module of claim 8, wherein the tuning assembly comprises an inductor and a controlled switch connected to the inductor;

11. A terminal device, characterized in that it comprises an antenna module according to any one of claims 1 to 10.