CN113782974B

CN113782974B - Antenna device and mobile terminal

Info

Publication number: CN113782974B
Application number: CN202111106535.3A
Authority: CN
Inventors: 王珅
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2024-07-30
Anticipated expiration: 2041-09-22
Also published as: CN113782974A

Abstract

The application discloses an antenna device and a mobile terminal, and relates to the field of communication. The antenna device comprises a first feed component, a second feed component and a radiator; the working frequency bands of the first power feeding component and the second power feeding component are different; the radiator comprises a first radiator, a second radiator and a third radiator which are mutually separated; the first feeding component is conducted with one radiator of the first radiator, the second radiator and the third radiator, and the second feeding component is conducted with the other radiator of the first radiator, the second radiator and the third radiator, so that the performance of a designated antenna in a first antenna corresponding to the first feeding component and a second antenna corresponding to the second feeding component is better.

Description

Antenna device and mobile terminal

Technical Field

The present application relates to the field of communications, and in particular, to an antenna apparatus and a mobile terminal.

Background

An antenna is a transducer that converts a current propagating on a transmission line into an electromagnetic wave propagating in free space, or an electromagnetic wave propagating in an unbounded medium into a current propagating on a transmission line. In engineering systems such as radio communication, broadcasting, television, radar, navigation, remote sensing, radio astronomy and the like, all the engineering systems which utilize electromagnetic waves to transmit information rely on antennas to work.

In operation of the antenna, an electrical signal is provided by the feed device and electromagnetic waves are propagated into free space by the antenna radiator. However, in the case where a medium having a relatively high dielectric constant is near or in contact with the antenna radiator, the radiation performance of the antenna may be greatly affected.

Disclosure of Invention

The embodiment of the application provides an antenna device and a mobile terminal, which solve the problem that the radiation performance of an antenna is greatly affected under the condition that a medium with a higher dielectric constant is close to or contacted with an antenna radiator.

In a first aspect, an antenna device is provided, the antenna device comprising:

a first feeding part, a second feeding part and a radiator; the working frequency bands of the first power feeding component and the second power feeding component are different;

The radiator comprises a first radiator, a second radiator and a third radiator, wherein the first radiator, the second radiator and the third radiator are mutually separated;

The first feeding component is conducted with one radiator of the first radiator, the second radiator and the third radiator, and the second feeding component is conducted with the other radiator of the first radiator, the second radiator and the third radiator, so that the performance of a designated antenna in a first antenna corresponding to the first feeding component and a second antenna corresponding to the second feeding component is better.

In a second aspect, a mobile terminal is provided, which comprises the antenna device according to the first aspect.

In the embodiment of the present application, the operating frequency bands of the first feeding component and the second feeding component in the antenna device are different, so that the antenna device can operate in two different operating frequency bands at the same time. Meanwhile, the radiator in the embodiment of the application comprises a first radiator, a second radiator and a third radiator, wherein the first radiator, the second radiator and the third radiator are mutually separated; the first power feeding component is communicated with one radiator of the first radiator, the second radiator and the third radiator, and the second power feeding component is communicated with the other radiator of the first radiator, the second radiator and the third radiator, so that the performance of a designated antenna in the first antenna corresponding to the first power feeding component and the second antenna corresponding to the second power feeding component is better. In this way, by providing three separate radiators, in the case where a medium having a relatively high dielectric constant is close to or contacts one of the three radiators, since the first feeding member and the second feeding member are respectively conducted with different radiators and the performance of the designated antenna in the first antenna corresponding to the first feeding member and the second antenna corresponding to the second feeding member becomes more excellent, it is possible to ensure that the radiation performance of the designated antenna is less affected, and thus, the problem that the radiation performance of the antenna is greatly affected in the case where the medium having a relatively high dielectric constant is close to or contacts the antenna radiator can be improved to some extent.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

fig. 1 is a schematic diagram of an antenna device according to an embodiment of the present application.

Fig. 2 is a schematic diagram of another antenna apparatus according to an embodiment of the present application.

Fig. 3 is a schematic diagram of another antenna apparatus according to an embodiment of the present application.

Fig. 4 is a schematic diagram of an application scenario of an antenna apparatus according to an embodiment of the present application.

Fig. 5 is a schematic diagram of another antenna device according to an embodiment of the present application.

Reference numerals illustrate:

110-first feeding element, 120-second feeding element, 210-first radiator, 220-second radiator, 230-third radiator, 310-first switching element, 320-second switching element, 400-voltage detector, 510-first tuning circuit, 520-second tuning circuit, 530-third tuning circuit, 540-fourth tuning circuit, 550-fifth tuning circuit, 560-sixth tuning circuit, 570-seventh tuning circuit, 580-eighth tuning circuit

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

As shown in fig. 1, an antenna device provided in an embodiment of the present application includes a first feeding part 110, a second feeding part 120, and a radiator 200; the working frequency bands of the first feeding part 110 and the second feeding part 120 are different; wherein the radiators include a first radiator 210, a second radiator 220 and a third radiator 230, and the first radiator 210, the second radiator 220 and the third radiator 230 are separated from each other; wherein the first feeding part 110 is electrically connected to one of the first radiator 210, the second radiator 220 and the third radiator 230, and the second feeding part 120 is electrically connected to the other of the first radiator 210, the second radiator 220 and the third radiator 230, so that the performance of a designated antenna of the first antenna corresponding to the first feeding part 110 and the second antenna corresponding to the second feeding part 120 is better.

For example, when the first feeding part 110 is conducted with the first radiator 210, the second feeding part 120 is conducted with the second radiator 220; when the first feeding member 110 is in conduction with the second radiator 220, the second feeding member is in conduction with the first radiator 210.

It is understood that the first feeding unit 110 may output a plurality of electrical signals with different frequency bands, and the second feeding unit 120 may output a plurality of electrical signals with different frequency bands. The frequency bands of the operation of the first power feeding part 110 and the second power feeding part 120 are different, which means that the frequency band of the electric signal output by the first power feeding part 110 is substantially different from the frequency band of the electric signal output by the second power feeding part 120, or that the frequency band combination of the electric signal output by the first power feeding part 110 and the frequency band combination of the electric signal output by the second power feeding part 120 are different, and the frequency band combination includes a plurality of different frequency bands. The main-acting power feeding means represents a power feeding means that acts mainly in the operating frequency band.

The antenna may include a feed element and a radiator associated with the feed element.

The first antenna corresponding to the first feeding part 110 may be an antenna including the first feeding part 110 and a radiator associated with the first feeding part 110. The second antenna corresponding to the second feeding part 120 may be an antenna including the second feeding part 120 and a radiator associated with the second feeding part 120.

The radiator associated with the first power feeding part 110 may include a radiator that is in communication with the first power feeding part 110, and in some cases, may include other radiators associated with the radiator in communication with the first power feeding part 110. The radiator associated with the second feed element 120 may include a radiator in communication with the second feed element 120 and, in some cases, may also include other radiators associated with the radiator in communication with the second feed element 120. For example, in the case where the first feeding part 110 is in conduction with the first radiator 210, the second feeding part 120 is in conduction with the second radiator 220, and the third radiator 230 is associated with the first radiator 210 to a greater degree, the first antenna may include the first feeding part 110, the first radiator 210, and the third radiator 230, and the second antenna may include the second feeding part 120 and the second radiator 220.

In the embodiment of the application, the designated antenna can be an antenna designated by a developer according to requirements. For example, the specified antenna may be an antenna that is more matched or more suitable to the requirements of the current use scenario, or may be an antenna that plays a main role in a certain application scenario. For example, in one scenario, the designated antenna may be an antenna corresponding to a feeding component with a higher operating frequency band, or the designated antenna may be an antenna corresponding to a feeding component with an operating frequency band that satisfies a certain condition. In the embodiment of the present application, it is understood that the intensities of the interference suffered by the plurality of antennas included in the antenna apparatus may be different, and the specified antenna may also be an antenna that is less interfered by the plurality of antennas.

Because the working frequency bands of the first feed component and the second feed component in the antenna device provided by the embodiment of the application are different, the antenna device can work in two different working frequency bands at the same time. Meanwhile, the radiator in the embodiment of the application comprises a first radiator, a second radiator and a third radiator, wherein the first radiator, the second radiator and the third radiator are mutually separated; the first feeding component is conducted with one radiator of the first radiator, the second radiator and the third radiator, and the second feeding component is conducted with the other radiator of the first radiator, the second radiator and the third radiator, so that the performance of a designated antenna in the first antenna corresponding to the first feeding component and the second antenna corresponding to the second feeding component can be better. In this way, by providing three separate radiators, in the case where a medium having a relatively high dielectric constant is close to or contacts one of the three radiators, since the first feeding member and the second feeding member are respectively conducted with different radiators and the performance of the designated antenna in the first antenna corresponding to the first feeding member and the second antenna corresponding to the second feeding member becomes more excellent, it is possible to ensure that the radiation performance of the designated antenna is less affected, and thus, it is possible to improve the problem that the radiation performance of the antenna is greatly affected in the case where a medium having a relatively high dielectric constant is close to or contacts the antenna radiator.

The antenna device provided by the embodiment of the application can be applied to a mobile terminal, and when the mobile terminal is in a vertical screen state, the designated antenna can be an antenna corresponding to a feed component with a lower working frequency band in the first feed component 110 and the second feed component 120; when the mobile terminal is in the landscape state, the designated antenna may be an antenna corresponding to a feed component with a higher operating frequency band in the first feed component 110 and the second feed component 120. For example, if the operating frequency band of the first feeding element 110 is lower than the operating frequency band of the second feeding element 120; the designated antenna is the first antenna corresponding to the first feeding component 110 when the mobile terminal is in the vertical screen state; in the case that the mobile terminal is in the landscape state, the designated antenna is the second antenna corresponding to the second feeding component 120.

The following description will take the specific antenna as an antenna that plays a main role in a certain application scenario (i.e., the specific antenna is an antenna that is more matched with or meets the requirement of the application scenario in the antenna device) as an example. In the following description, unless otherwise indicated, the specific antennas are described as examples of antennas that play a main role in a certain application scenario, but it should be understood that these are only examples and are not meant to be limiting.

As shown in fig. 1, it is assumed that the antenna that plays a main role in the antenna device is a first antenna corresponding to the first power feeding member 110, and the antenna that plays a secondary role is a second antenna corresponding to the second power feeding member 120. In the case where a medium having a relatively high dielectric constant is adjacent to or in contact with the first radiator 210 of the antenna device, the first feeding member 110 may be conducted to the second radiator 220 distant from the medium having a relatively high dielectric constant, and the second feeding member 120 may be conducted to the first radiator 210 or the third radiator 230 (see fig. 1). In the case where a medium having a relatively high dielectric constant is adjacent to or in contact with the second radiator 220 of the antenna device, the first feeding member 110 is conducted to the first radiator 210 distant from the medium having a relatively high dielectric constant, and the second feeding member 120 is conducted to the second radiator 220 or the third radiator 230 (not shown). That is, according to the antenna device provided by the embodiment of the present application, the radiator that is in conduction with the power feeding member that plays a main role and the radiator that is in conduction with the power feeding member that plays a secondary role can be simultaneously switched according to actual conditions.

The switching of the different radiators conducted with the first feeding part 110 or the second feeding part 120 can be realized by changing the connection relation between the first feeding part 110 or the second feeding part 120 and the different radiators. For example, switching of the conductive radiator to the feed element may be achieved by a switch having a single pole double throw function.

It will be appreciated that the third radiator 230 may also operate based on the coupling effect of the first radiator 210 and the second radiator 220 on the third radiator 230 in the case where the first feeding member 110 is in communication with one of the first radiator 210 and the second radiator 220 and the second feeding member 120 is in communication with the other of the first radiator 210 and the second radiator 220.

Fig. 2 is a schematic diagram of another antenna apparatus according to an embodiment of the present application. As shown in fig. 2, on the basis of fig. 1, the antenna device according to the embodiment of the present application may further include a first switching part 310 and a second switching part 320; a first end of the first switching part 310 is connected to the first feeding part 110, a second end of the first switching part 310 is connected to the first radiator 210, and a third end of the first switching part 310 is connected to the second radiator 220; the first end of the second switching part 320 is connected to the second feeding part 120, the second end of the second switching part 320 is connected to the first radiator 210, and the third end of the second switching part 320 is connected to the second radiator 220.

The first switch unit 310 and the second switch unit 320 are both switch units having a single pole double throw function, and the first feeding unit 110 and different radiators can be implemented by switching the conducting state between the first end of the first switch unit 310 and the second end or the third end of the first switch unit 310; by switching the conducting state between the first end of the second switching element 320 and the second end or the third end of the second switching element 320, the second feeding element 120 is conducted to different radiators. For example, in a case where the first end of the first switching part 310 is conducted with the second end of the first switching part 310, the first feeding part 110 is conducted with the first radiator 210; in a case where the first end of the first switching part 310 is conducted with the third end of the first switching part 310, the first feeding part 110 is conducted with the second radiator 220; in a case where the first end of the second switching part 320 is conducted with the second end of the second switching part 320, the second feeding part 120 is conducted with the first radiator 210; in the case where the first end of the second switching part 320 is conducted with the third end of the second switching part 320, the second feeding part 120 is conducted with the second radiator 220.

In this way, the radiator that is in conduction with the first feeding part 110 can be flexibly switched by the first switching part 310, and the radiator that is in conduction with the second feeding part 120 can be flexibly switched by the second switching part 320. And then the feed component of the appointed antenna can be conducted with the radiator far away from the medium with higher dielectric constant through switching, so that the performance of the appointed antenna is better than that before switching.

When a medium with a higher dielectric constant approaches or contacts a certain radiator in the antenna device provided by the embodiment of the application, the first end of the switch component connected with the feed component (i.e. the feed component of the designated antenna, such as the first feed component or the second feed component) playing a main role can be conducted with one end connected with the radiator far away from the medium with the higher dielectric constant in the second end and the third end of the switch component, so that the radiator far away from the medium with the higher dielectric constant can perform main radiation, and a better radiation effect can be obtained.

For example, as shown in fig. 2, it is assumed that the antenna that plays a main role in the antenna device is a first antenna corresponding to the first feeding member 110, and the antenna that plays a secondary role is a second antenna corresponding to the second feeding member 120. In the case where a medium having a relatively high dielectric constant is adjacent to or contacts the first radiator 210 of the antenna device, the first end of the first switching element 310 may be electrically connected to the third end of the first switching element 310, and the first end of the second switching element 320 may be electrically connected to the second end of the second switching element 320, so that the first feeding element 110 may be electrically connected to the second radiator 220 distant from the medium having a relatively high dielectric constant, and the second feeding element 120 may be electrically connected to the first radiator 210. In the case where a medium with a relatively high dielectric constant is close to or contacts the second radiator 220 of the antenna device, the first end of the first switch part 310 may be conducted to the second end of the first switch part 310, and the first end of the second switch part 320 may be conducted to the third end of the second switch part 320, so that the first feeding part 110 may be conducted to the first radiator 210 far from the medium with a relatively high dielectric constant, and the second feeding part 120 may be conducted to the second radiator 220 or the third radiator 230 (it should be noted that fig. 2 only shows the case where the medium with a relatively high dielectric constant is close to or contacts the first radiator 210). That is, the antenna device provided in the embodiment of the present application may switch the radiator (e.g., the first radiator 210 or the second radiator 220) that is conducted with the feeding part (i.e., the feeding part of the designated antenna, e.g., the first feeding part 110 or the second feeding part 120) that plays a main role according to the actual situation.

It should be noted that, in the case that the antenna device provided in the embodiment of the present application includes a first radiator and a second radiator, the second end of the switch component is connected to the first radiator, and the third end of the switch component is connected to the second radiator, the first end of the switch component is connected to the feed component corresponding to the operating frequency band that plays a main role. Under the condition that a medium with higher dielectric constant is close to or contacts with the first radiator, the first end of the switch component is conducted with the third end of the switch component; the first end of the switching element is brought into conduction with the second end of the switching element in the case of a medium having a relatively high dielectric constant close to or in contact with the second radiator.

Specifically, when switching the radiator that is in conduction with the power feeding member, the power feeding member may be connected to a different radiator in a different case.

In case that the first preset condition is satisfied, the first feeding part 110 may be in conduction with a first target radiator, and the second feeding part 120 may be in conduction with a second target radiator;

in case that the second preset condition is satisfied, the first feeding part 110 may be in conduction with the second target radiator, and the second feeding part 120 may be in conduction with the first target radiator;

The first target radiator is one radiator of the first radiator and the second radiator, and the second target radiator is the other radiator of the first radiator and the second radiator.

Therefore, according to different actual situations, if the satisfied conditions are different (namely, the first preset condition or the second preset condition is satisfied), the radiator conducted with the first feeding component and the radiator conducted with the second feeding component are switched, so that the feeding component of the designated antenna can be always connected with the radiator relatively far away from the medium with higher dielectric constant under various situations (meeting the first preset condition and the second preset condition), and the performance of the designated antenna is further improved.

The main parameters of the performance of the antenna in this embodiment include one or more of pattern, gain, input impedance, standing wave ratio and polarization.

As shown in fig. 3, the antenna device provided by the embodiment of the present application may further include a voltage detector 400, where a first end of the voltage detector 400 is connected to the first feeding part 110, and a second end of the voltage detector 400 is connected to the first end of the first switching part 310;

wherein the first preset condition may include at least one of: the change value of the input/output voltage detected by the voltage detector 400 is smaller than a threshold value; the antenna device is in an initial state;

The second preset condition may include: the change value of the input/output voltage detected by the voltage detector 400 is greater than or equal to a threshold value.

The voltage detector 400 in fig. 3 is used to detect a variation value of the input/output voltage of the first feeding part 110. It will be appreciated that in general, an antenna cannot fully convert an electrical signal provided by a feed into an electromagnetic wave for radiation, and an electrical signal that is not fully converted into an electromagnetic wave is reflected back to the feed. The reflected voltage is the voltage of the reflected electric signal, and the ratio of the reflected voltage to the input voltage can reflect the radiation effect of the antenna to a certain extent. When other conditions are certain, the smaller the ratio of the reflected voltage to the input voltage is, the better the radiation effect of the antenna is; the larger the ratio of the reflected voltage to the input voltage, the poorer the radiation effect of the antenna. When a medium with a high dielectric constant is brought close to or in contact with the radiator, the ratio of the reflected voltage to the input voltage increases.

The variation value of the input/output voltage represents the ratio of the reflected voltage to the input voltage. If the variation value of the input/output voltage detected by the voltage detector 400 is smaller than the threshold value, it indicates that no medium with a relatively high dielectric constant approaches or contacts the radiator that is in conduction with the first power feeding member 110 (i.e., the power feeding member that plays a main role); if the change value of the input/output voltage detected by the voltage detector 400 is greater than or equal to the threshold value, it means that a medium with a relatively high dielectric constant approaches or contacts the radiator that is in conduction with the first feeding member 110, in which case, the radiator that is in conduction with the first feeding member 110 needs to be switched on the basis of the initial state.

For example, the initial state of the antenna device is that the first feeding part 110 is conducted with the first radiator 210, and the second feeding part 120 is conducted with the second radiator 220. When the voltage detector 400 detects that the variation value of the input/output voltage is greater than or equal to the threshold value, the radiator connected to the first power feeding unit 110 is switched, and the radiator connected to the second power feeding unit 120 is switched, so that the first power feeding unit 110 is conducted with the second radiator 220, and the second power feeding unit 120 is conducted with the first radiator 210.

In this way, whether the first preset condition or the second preset condition is satisfied can be determined according to the variation value of the input/output voltage detected by the voltage detector 400, and the switching between the switching part and the radiator can be performed based on the preset conditions. Therefore, the performance of the appointed antenna after the radiator is switched is better.

In fig. 3, only the case where the voltage detector 400 is connected to the first power feeding member 110 is shown, and in some cases, the voltage detector 400 may be connected to the second power feeding member 120. In the case where the voltage detector 400 is connected to the second power feeding part 120, a first end of the voltage detector 400 is connected to the second power feeding part 120, and a second end of the voltage detector 400 is connected to the first end of the second switching part 320. In this case, the voltage detector 400 is configured to detect a change value of the input/output voltage of the second feeding member 120, and further determine whether a medium having a relatively high dielectric constant is close to or in contact with the radiator that is in conduction with the second feeding member.

The antenna device provided by the embodiment of the application can be applied to a mobile terminal, the first radiator 210 can be positioned at the left side edge of the middle frame of the mobile terminal, and the second radiator 220 can be positioned at the right side edge of the middle frame of the mobile terminal; when the mobile terminal is held in the portrait state, the feeding part that plays a main role may be a feeding part with a relatively low operating frequency band (i.e., the designated antenna may be an antenna corresponding to the feeding part with a relatively low operating frequency band; for example, if the operating frequency band of the first feeding part 110 is lower than that of the second feeding part 120, the first feeding part 110 is a feeding part that plays a main role, and the first antenna corresponding to the first feeding part 110 is a designated antenna). At this time, it may happen that the user holds the mobile terminal with the left hand, and the palm of the user is closely attached to the left side edge of the middle frame of the mobile terminal, so that the first radiator 210 located on the left side edge of the middle frame of the mobile terminal is greatly disturbed, and the second radiator 220 located on the right side edge of the middle frame of the mobile terminal is less disturbed; or the user holds the mobile terminal by using the right hand, and the palm of the user is clung to the right side edge of the middle frame of the mobile terminal, so that the second radiator 220 positioned on the right side edge of the middle frame of the mobile terminal is subjected to larger interference, and the first radiator 210 positioned on the left side edge of the middle frame of the mobile terminal is subjected to smaller interference. At this time, it is possible to detect whether or not a medium having a relatively high dielectric constant is close to or in contact with a radiator that is in conduction with a feeding member that plays a main role by the voltage detector 400.

If the first power feeding part 110 plays a main role when the mobile terminal is in the portrait state, the voltage detector 400 is connected to the first power feeding part 110, and the initial state of the antenna device in the mobile terminal is that the first power feeding part 110 is connected to the first radiator 210, and the second power feeding part 120 is connected to the second radiator 220. At this time, if the voltage monitor 400 detects that the variation value of the input/output voltage of the first feeding part 110 is greater than or equal to the threshold value, it indicates that the user holds the side of the mobile terminal where the first radiator 210 is located with the left hand. Further, the radiator in communication with the first feeding part 110 may be switched, while the radiator in communication with the second feeding part 120 may be switched, for example, the first feeding part 110 may be in communication with the second radiator 220 relatively far from the user's hand, and the second feeding part 120 may be in communication with the first radiator 210.

Meanwhile, the first preset condition may further include: the first radiator 210 is located below the second radiator 220; the second preset condition may further include: the second radiator 220 is located below the first radiator 210; wherein the relatively subjacent radiator is subject to greater interference.

In the case that the antenna device in the embodiment of the present application is applied to a mobile terminal, the first radiator 210 may be located at the left side of the middle frame of the mobile terminal, and the second radiator 220 may be located at the right side of the middle frame of the mobile terminal; when the mobile terminal is held in the landscape state, it may happen that the left side of the middle frame of the mobile terminal is directed downward or the right side of the mobile terminal is directed downward (i.e., the first radiator 210 is located under the second radiator 220 or the second radiator 220 is located under the first radiator 210). When the mobile terminal is held in the landscape screen state, the area of the middle frame of the mobile terminal, which is contacted by the human hand, is larger than the area of the side edge of the middle frame, which is positioned below, namely the middle frame is more disturbed by the radiator positioned below.

In this way, the radiator that is interfered more at this time can be determined according to the relative positions of the first radiator 210 and the second radiator 220, and then the radiator that is conducted with the first feeding component 110 and the radiator that is conducted with the second feeding component 120 can be switched respectively, that is, the feeding component of the designated antenna is conducted with the radiator that is interfered less, so that the performance of the designated antenna after the switching of the radiator is better.

As shown in fig. 3-4, when the mobile terminal is used by a user to cross the screen, the first radiator 210 is often located below the second radiator 220, or the second radiator 220 is located below the first radiator 210. Since most of the radiator located relatively below is often touched by the user's hand, it is often necessary to conduct the power feeding member corresponding to the operating frequency band that acts mainly (i.e., the power feeding member of the designated antenna) with the radiator located relatively above and conduct the power feeding member corresponding to the operating frequency band that acts secondarily (i.e., the power feeding member that acts secondarily) with the radiator located relatively below. In this case, attention is paid to ensuring the radiation effect of the feeding member corresponding to the operating frequency band that plays a main role. When the user uses the mobile terminal by using the transverse screen, the working frequency band playing the main role can be the frequency band with higher frequency band.

For example, when the operating frequency band of the first feeding component 110 is higher than that of the second feeding component 120, the operating frequency band corresponding to the first feeding component 110 plays a main role, and the first radiator 210 is located below the second radiator 220, the first feeding component 110 is conducted with the second radiator 220, and the second feeding component 120 is conducted with the first radiator 210.

When the operating frequency band of the first power feeding component 110 is higher than that of the second power feeding component 120, the operating frequency band corresponding to the first power feeding component 110 plays a main role, and the second radiator 220 is located below the first radiator 210, the first power feeding component 110 is conducted with the first radiator 210, and the second power feeding component 120 is conducted with the second radiator 220.

When the operating frequency band of the second power feeding component 120 is higher than that of the first power feeding component 110, the operating frequency band corresponding to the second power feeding component 120 plays a main role, and the first radiator 210 is located below the second radiator 220, the first power feeding component 110 is conducted with the first radiator 210, and the second power feeding component 120 is conducted with the second radiator 220.

When the operating frequency band of the second power feeding component 120 is higher than that of the first power feeding component 110, the operating frequency band corresponding to the second power feeding component 120 plays a main role, and the second radiator 220 is located below the first radiator 210, the first power feeding component 110 is conducted with the second radiator 220, and the second power feeding component 120 is conducted with the first radiator 210.

In this way, when the mobile terminal is used by the user's transverse screen, the relative positions of the first radiator 210 and the second radiator 220 may be switched between the radiators connected to the first feeding member 110 and the second feeding member 120, so that most of the radiators not contacted by the user's hand may play a main radiating role.

Optionally, the antenna device provided by the embodiment of the present application may further include a direction sensor, where the direction sensor may detect a relative position of the first radiator 210 and the second radiator 220.

As shown in fig. 5, on the basis of fig. 1, the antenna device provided in the embodiment of the present application may further include a first switch component 310 and a second switch component 320; a first end of the first switching part 310 is connected to the first feeding part 110, a second end of the first switching part 310 is connected to the first radiator 210, and a third end of the first switching part 310 is connected to the second radiator 220; the first end of the second switching part 320 is connected to the second feeding part 120, the second end of the second switching part 320 is connected to the third radiator 230, and the third end of the second switching part 320 is connected to the third radiator 230.

In this way, the radiator (the first radiator 210 or the second radiator 220) connected to the first power feeding member 110 may be switched so that the first radiator 210 and the third radiator act together or the second radiator 220 and the third radiator 230 act together by switching the on state of the first end of the first switching member 310 and the second end and the third end of the first switching member 310.

In one embodiment, the third radiator 230 is disposed between the first radiator 210 and the second radiator 220, the third radiator 230 having a first end proximate the first radiator 210 and a second end proximate the second radiator 220;

In case that the first target condition is satisfied, the first feeding part 110 is conducted with the first radiator 210, and the second feeding part 120 is conducted with the first end of the third radiator 230;

in case that the second target condition is satisfied, the first feeding part 110 is conducted with the second radiator 220, and the second feeding part 120 is conducted with the second end of the third radiator 230.

It will be appreciated that bringing the third radiator 230 into conduction with the second feed member 120 near the end of the radiator in conduction with the first feed member 110 may cause the third radiator 230 to function together with the radiator in conduction with the first feed member 110.

The first switch unit 310 and the second switch unit 320 are both switch units having a single pole double throw function, and the first feeding unit 110 and different radiators can be implemented by switching the conducting state between the first end of the first switch unit 310 and the second end or the third end of the first switch unit 310; by switching the conducting state between the first end of the second switching element 320 and the second end or the third end of the second switching element 320, the conducting state between the second feeding element 120 and the different ends of the third radiator 230 is realized.

In this way, the radiator that is in conduction with the first feeding part 110 can be flexibly switched by the first switching part 310, and one end that is in conduction with the second feeding part 120 in the third radiator 230 can be flexibly switched by the second switching part 320. Further, by switching the radiator that is in conduction with the first feeding part 110 and switching the end of the third radiator 230 that is in conduction with the second feeding part 120, the performance of the designated antenna is made more excellent than before switching.

As shown in fig. 5, the antenna device may further include a voltage detector 400, a first end of the voltage detector 400 being connected to the first feeding part 110, and a second end of the voltage detector 400 being connected to the first end of the first switching part 310;

Wherein the first target condition includes at least one of: the change value of the input/output voltage detected by the voltage detector 400 is smaller than a threshold value; the antenna device is in an initial state;

The second target condition includes: the voltage detector detects 400 that the variation value of the input/output voltage is greater than or equal to a threshold value.

If the first power feeding unit 110 in fig. 5 is a power feeding unit that plays a main role, that is, the designated antenna is a first antenna corresponding to the first power feeding unit 110, the voltage detector 400 is configured to detect a change value of an input/output voltage of the first power feeding unit 110, that is, the voltage detector 400 is configured to detect a change value of an input/output voltage of a power feeding unit that plays a main role (that is, a power feeding unit of the designated antenna). It will be appreciated that in general, an antenna cannot fully convert an electrical signal provided by a feed into an electromagnetic wave for radiation, and an electrical signal that is not fully converted into an electromagnetic wave is reflected back to the feed. The reflected voltage is the voltage of the reflected electric signal, and the ratio of the reflected voltage to the input voltage can reflect the radiation effect of the antenna to a certain extent. When other conditions are certain, the smaller the ratio of the reflected voltage to the input voltage is, the better the radiation effect of the antenna is; the larger the ratio of the reflected voltage to the input voltage, the poorer the radiation effect of the antenna. When a medium with a high dielectric constant is brought close to or in contact with the radiator, the ratio of the reflected voltage to the input voltage increases.

For example, the first feeding member 110 is a feeding member that plays a main role, the initial state of the antenna device is that the first feeding member 110 is in conduction with the first radiator 210, and the second feeding member 120 is in conduction with the first end of the third radiator 230. When the voltage detector 400 detects that the variation value of the input/output voltage is equal to or greater than a threshold value, the radiator connected to the first power feeding member 110 is switched to conduct the first power feeding member 110 and the second radiator 220 (to conduct the power feeding member that plays a main role and the radiator that is farther from the medium having a higher dielectric constant); while the second feeding member 120 is conducted to the second end of the third radiator 230.

In this way, it can be determined whether the medium with higher dielectric constant approaches or contacts the radiator that is in conduction with the feeding component that plays a main role at this time according to the change value of the input/output voltage detected by the voltage detector 400, that is, whether the designated antenna is interfered to a certain extent can be determined according to the change value of the input/output voltage detected by the voltage detector 400. Meanwhile, the radiator that is turned on with the first feeding unit 110 may be switched according to the variation value of the input/output voltage, and the end of the third radiator 230 that is turned on with the second feeding unit may be switched, so that the performance of the specified antenna after the radiator is switched is better.

In fig. 5, only the case where the voltage detector 400 is connected to the first power feeding member 110 is shown, and when the second power feeding member 120 plays a main role (i.e., when the second antenna corresponding to the second power feeding member 120 is a designated antenna), the voltage detector 400 may be connected to the second power feeding member 120. In the case where the voltage detector 400 is connected to the second power feeding part 120, a first end of the voltage detector 400 is connected to the second power feeding part 120, and a second end of the voltage detector 400 is connected to the first end of the second switching part 320. In this case, the voltage detector 400 is configured to detect a change value of the input/output voltage of the second feeding member 120, and further determine whether a medium having a relatively high dielectric constant is close to or in contact with the radiator that is in conduction with the second feeding member.

For example, the antenna device provided in the embodiment of the present application may be applied to a mobile terminal, where the first radiator 210 may be located on the left side of the middle frame of the mobile terminal, and the second radiator 220 may be located on the right side of the middle frame of the mobile terminal; when the mobile terminal is held in the portrait state, the feeding part that plays a main role may be a feeding part with a relatively low operating frequency band (i.e., the designated antenna may be an antenna corresponding to the feeding part with a relatively low operating frequency band; for example, if the operating frequency band of the first feeding part 110 is lower than that of the second feeding part 120, the first feeding part 110 is a feeding part that plays a main role, and the first antenna corresponding to the first feeding part 110 is a designated antenna). At this time, it may happen that the user holds the mobile terminal with the left hand, and the palm of the user is closely attached to the left side edge of the middle frame of the mobile terminal, so that the first radiator 210 located on the left side edge of the middle frame of the mobile terminal is greatly disturbed, and the second radiator 220 located on the right side edge of the middle frame of the mobile terminal is less disturbed; or the user holds the mobile terminal by using the right hand, and the palm of the user is clung to the right side edge of the middle frame of the mobile terminal, so that the second radiator 220 positioned on the right side edge of the middle frame of the mobile terminal is subjected to larger interference, and the first radiator 210 positioned on the left side edge of the middle frame of the mobile terminal is subjected to smaller interference.

At this time, it is possible to detect whether or not a medium having a relatively high dielectric constant is close to or in contact with a radiator that is in conduction with a feeding member that plays a main role by the voltage detector 400. If the first power feeding part 110 plays a main role when the mobile terminal is in the portrait state, the voltage detector 400 is connected to the first power feeding part 110, and the initial state of the antenna device in the mobile terminal is that the first power feeding part 110 is connected to the first radiator 210, and the second power feeding part 120 is connected to the first end of the third radiator 230. At this time, if the voltage monitor 400 detects that the variation value of the input/output voltage of the first feeding part 110 is greater than or equal to the threshold value, it indicates that the user holds the side of the mobile terminal where the first radiator 210 is located with the left hand. It is further possible to switch the radiator in communication with the first feeding member 110 and to switch the end of the third radiator 230 in communication with the second feeding member 210, such as to switch the first feeding member 110 in communication with the second radiator 220 relatively far from the user's hand and to switch the second feeding member 120 in communication with the second end of the third radiator 230 close to the second radiator 220.

Meanwhile, the first target condition may further include: the first radiator 210 is located below the second radiator 220;

The second target condition may further include: the second radiator 220 is located below the first radiator 210.

For example, in the case where the antenna apparatus in the embodiment of the present application is applied to a mobile terminal, the first radiator may be located on the left side of the middle frame of the mobile terminal, and the second radiator may be located on the right side of the middle frame of the mobile terminal; as shown in fig. 4, when the mobile terminal is held in the landscape state, it may occur that the left side of the middle frame of the mobile terminal is downward or the right side of the mobile terminal is downward (i.e., the first radiator is located under the second radiator or the second radiator is located under the first radiator). When the mobile terminal is held in the landscape screen state, the area of the middle frame of the mobile terminal, which is contacted by the human hand, is larger than the area of the side edge of the middle frame, which is positioned below, namely the middle frame is more disturbed by the radiator positioned below.

In this way, according to the relative positions of the first radiator 210 and the second radiator 220, the radiator that is in conduction with the first feeding component 110 and one end of the third radiator 230 that is in conduction with the second feeding component can be switched, so that the performance of the specified antenna after the radiator is switched is better.

It can be appreciated that the antenna device provided by the embodiment of the application can be applied to a mobile terminal (for example, a mobile phone). The antenna device provided by the embodiment of the application can be specifically arranged at the lower half part of the mobile terminal.

As shown in fig. 3-4, when the mobile terminal is used by a user to cross the screen, the first radiator 210 is often located below the second radiator 220, or the second radiator 220 is located below the first radiator 210. A break may be formed between two adjacent ends of the two radiators, for example, a first break may be formed between the first radiator 210 and the third radiator 230, and a second break may be formed between the second radiator 220 and the third radiator 230. Whereas the relatively lower one of the first and second breaks tends to be mostly contacted by the user's hand. Therefore, it is generally necessary to radiate the power feeding member corresponding to the operating frequency band that is mainly used (i.e., the power feeding member that is mainly used) through the break located relatively above the first break and the second break, and in this case, the power feeding member that is mainly used needs to be conducted to the end of the third radiator 230 that is far from the break located relatively above (i.e., the end of the third radiator 230 that is relatively below the first end and the second end), and the power feeding member that is secondarily used needs to be conducted to the radiator that is near the end of the third radiator 230 that is connected to the power feeding member that is mainly used. In this case, attention is paid to ensuring the radiation effect of the feeding member corresponding to the operating frequency band that plays a main role. When the user uses the mobile terminal by using the transverse screen, the working frequency band playing the main role can be the frequency band with higher frequency band.

For example, when the operating frequency band corresponding to the second feeding element 120 is higher than the operating frequency band corresponding to the first feeding element 120 (i.e., the second feeding element 120 plays a main role), and the first radiator 210 is located below the second radiator 220 (i.e., the second break is located above the first break), the second feeding element 120 is in conduction with the first end of the third radiator 230 (i.e., the end of the third radiator 230 away from the second break), and the first feeding element 110 is in conduction with the first radiator 210.

When the operating frequency band corresponding to the second feeding component 120 is higher than the operating frequency band corresponding to the first feeding component 120 (i.e., the second feeding component 120 plays a main role), and the second radiator 220 is located below the first radiator 210 (i.e., the first break is located above the second break), the second feeding component 120 is conducted with the second end of the third radiator 230 (i.e., the end, far away from the first break, of the third radiator 230), and the first feeding component 110 is conducted with the second radiator 220.

In this way, when the mobile terminal is used by the user's transverse screen, the relative positions of the first radiator 210 and the second radiator 220 may be switched to the radiator connected to the first feeding member 110 and the second feeding member 120, and the end of the third radiator 230 that is in conduction with the second feeding member may be switched to.

Meanwhile, the embodiment of the application also provides a mobile terminal which comprises the antenna device provided by the embodiment of the application.

In an embodiment of the present application, referring to fig. 3 or 4, optionally, the first radiator 210, the second radiator 220, and the third radiator 230 are disposed on a frame of the mobile terminal, where the frame includes a first side, a second side, and a connection side, one end of the connection side is connected to the first side, and the other end of the connection side is connected to the second side;

The first radiator 210 has a first portion on the first side and a second portion on the connecting side; the second radiator 220 has a first portion on the second side and a second portion on the connecting side; the third radiator 230 is located at the connecting side.

In this way, the antenna device can be applied to the lower half of the mobile terminal, so that the first radiator, the second radiator and the third radiator are all positioned at the side edge of the mobile terminal, and better radiation effect can be exerted.

The frame may be a middle frame of the mobile terminal.

In one embodiment, the antenna device comprises a first switch component 310 and a second switch component 320, wherein a first end of the first switch component 310 is connected with the first feeding component 110, a second end of the first switch component 310 is connected with the first radiator 210, and a third end of the first switch component 310 is connected with the second radiator 220; a first end of the second switching part 320 is connected to the second feeding part 120, a second end of the second switching part 320 is connected to the first radiator 210, and a second end of the first switching part 310 is connected to the first portion or the second portion of the first radiator 210, and a third end of the first switching part 310 is connected to the first portion or the second portion of the second radiator 220, in a case that a third end of the second switching part 320 is connected to the second radiator 220; a second end of the second switching part 320 is connected to the second portion of the first radiator 210, and a third end of the second switching part 320 is connected to the second portion of the second radiator 220; wherein the operating frequency band of the second feeding part 120 is higher than the operating frequency band of the first feeding part 110.

In this way, the radiator that is in conduction with the first feeding part 110 and the radiator that is in conduction with the second feeding part 120 can be switched by the switching part, that is, by switching the radiator that is in conduction with the feeding part of the designated antenna, the feeding part of the designated antenna can be in conduction with the radiator that is far away from the medium with higher dielectric constant, so that the performance of the designated antenna is better after switching the radiator that is in conduction with the feeding part of the designated antenna than before switching.

When switching radiators that are electrically connected to the first power feeding unit 110 or the second power feeding unit 120 in the antenna device of the mobile terminal, the first power feeding unit 110 or the second power feeding unit 120 may be connected to different radiators in different cases.

In the case that the first preset condition is satisfied, the first feeding part 110 is conducted with the first target radiator, and the second feeding part 120 is conducted with the second target radiator; in the case that the second preset condition is satisfied, the first feeding part 110 is conducted with the second target radiator, and the second feeding part 120 is conducted with the first target radiator; wherein the first target radiator is one of the first radiator 210 and the second radiator 220, and the second target radiator is the other of the first radiator 210 and the second radiator 220; wherein the first preset condition includes: in the case that the mobile terminal is held in a landscape state, the height of the second side where the first portion of the second radiator 220 is located is greater than the height of the first side where the first portion of the first radiator 210 is located; the second preset condition includes: in the case that the mobile terminal is held in a landscape state, the height of the first side where the first portion of the first radiator 210 is located is greater than the height of the second side where the first portion of the second radiator 220 is located.

In this way, the radiator that is interfered more at this time can be determined according to the relative positions of the first radiator 210 and the second radiator 220, and then the radiator that is conducted with the first feeding component 110 and the radiator that is conducted with the second feeding component 120 can be switched respectively, that is, the radiator that is conducted with the feeding component of the designated antenna is switched, so that the feeding component of the designated antenna is conducted with the radiator that is interfered less, and then the performance of the designated antenna after the switching of the radiators is better.

It is understood that the height of the second side where the first portion of the second radiator 220 is located is greater than the height of the first side where the first portion of the first radiator 210 is located, and that the first radiator 210 is located below the second radiator 220 is understood; the first side of the first radiator 210 having a greater height than the second side of the second radiator 220 having a first portion is understood to be the second radiator 220 located below the first radiator 210.

As shown in fig. 3-4, when the mobile terminal is used by the user's transverse screen, the first side where the first portion of the first radiator 210 is located is often located below the second side where the first portion of the second radiator 220 is located, or the second side where the first portion of the second radiator 220 is located below the first side where the first portion of the first radiator 210 is located; i.e. the first radiator 210 is located below the second radiator 220 or the second radiator 220 is located below the first radiator 210. Since most of the radiator located relatively below is often touched by the user's hand, it is often necessary to conduct the power feeding member corresponding to the operating frequency band that acts mainly (i.e., the power feeding member of the designated antenna) with the radiator located relatively above and conduct the power feeding member corresponding to the operating frequency band that acts secondarily (i.e., the power feeding member that acts secondarily) with the radiator located relatively below. In this case, attention is paid to ensuring the radiation effect of the feeding member corresponding to the operating frequency band that plays a main role. When the user uses the mobile terminal by using the transverse screen, the working frequency band playing the main role can be the frequency band with higher frequency band.

For example, when the operating frequency band of the second feeding component 120 is higher than that of the first feeding component 110, the operating frequency band corresponding to the second feeding component 120 plays a main role (i.e., the designated antenna is the second antenna corresponding to the second feeding component 120), and the first radiator 210 is located below the second radiator 220, the first feeding component 110 is conducted with the first radiator 210, and the second feeding component 120 is conducted with the second radiator 220.

When the operating frequency band of the second feeding component 120 is higher than that of the first feeding component 110, the operating frequency band corresponding to the second feeding component 120 plays a main role (i.e., the designated antenna is a second antenna corresponding to the second feeding component 120), and the second radiator 220 is located below the first radiator 210, the first feeding component 110 is conducted with the second radiator 220, and the second feeding component 120 is conducted with the first radiator 210.

In this way, when the mobile terminal is used by the user's transverse screen, the relative positions of the first radiator 210 and the second radiator 220 may be switched between the radiators connected to the first feeding member 110 and the second feeding member 120, so that most of the radiators not contacted by the user's hand play a main role, and most of the radiators not contacted by the user's hand are conducted with the feeding member of the designated antenna.

In another embodiment, the antenna device comprises a first switch component 310 and a second switch component 320, wherein a first end of the first switch component 310 is connected with the first feeding component 110, a second end of the first switch component 310 is connected with the first radiator 210, and a third end of the first switch component 310 is connected with the second radiator 220; a first end of the second switching part 320 is connected to the second feeding part 120, a second end of the second switching part 320 is connected to the third radiator 230, and in case that a third end of the second switching part 320 is connected to the third radiator 230, a second end of the first switching part 310 is connected to the first portion or the second portion of the first radiator 210, and a third end of the first switching part 320 is connected to the first portion or the second portion of the second radiator 220; wherein the operating frequency band of the second feeding part 120 is higher than the operating frequency band of the first feeding part 110.

Optionally, the first radiator 210 may further have a third portion, the third portion of the first radiator 210 being located between the first portion of the first radiator 210 and the second portion of the first radiator 210; the second radiator 220 also has a third portion, the third portion of the second radiator 220 being located between the first portion of the second radiator 220 and the second portion of the second radiator 220.

The second end of the first switching part 310 may be further connected to a third portion of the first radiator 210, and the third end of the first switching part 310 may be further connected to a third portion of the second radiator 220.

The third radiator 230 is disposed between the first radiator 210 and the second radiator 220, the third radiator 230 having a first end adjacent to the first radiator 210 and a second end adjacent to the second radiator 220; in case that the first target condition is satisfied, the first feeding part 110 is conducted with the first radiator 210, and the second feeding part 120 is conducted with the first end of the third radiator 230; in case that the second target condition is satisfied, the first feeding part 110 is conducted with the second radiator 220, and the second feeding part 120 is conducted with the second end of the third radiator 230.

Wherein the first preset condition includes: in the case that the mobile terminal is held in a landscape state, the height of the second side where the first portion of the second radiator 220 is located is greater than the height of the first side where the first portion of the first radiator 210 is located; the second preset condition includes: in the case that the mobile terminal is held in a landscape state, the height of the first side where the first portion of the first radiator 210 is located is greater than the height of the second side where the first portion of the second radiator 220 is located.

As shown in fig. 3-4, when the mobile terminal is used by a user to cross the screen, the first radiator 210 is often located below the second radiator 220, or the second radiator 220 is located below the first radiator 210. A break may exist at two ends of the two adjacent radiators, for example, a first break may exist between the first radiator 210 and the third radiator 230, and a second break may exist between the second radiator 220 and the third radiator 230. Whereas the relatively lower one of the first and second breaks tends to be mostly contacted by the user's hand. Therefore, it is generally necessary to radiate the power feeding member corresponding to the operating frequency band that is mainly used (i.e., the power feeding member that is mainly used) through the break located relatively above the first break and the second break, and in this case, the power feeding member corresponding to the operating frequency band that is mainly used needs to be conducted to the end of the third radiator 230 that is far from the break located relatively above (i.e., the end of the third radiator 230 that is relatively below the first end and the second end), and the power feeding member that is secondarily used needs to be conducted to the radiator that is near the end of the third radiator 230 that is connected to the power feeding member that is mainly used. In this case, attention is paid to ensuring the radiation effect of the feeding member corresponding to the operating frequency band that plays a main role. When the user uses the mobile terminal by using the transverse screen, the working frequency band playing the main role can be the frequency band with higher frequency band.

For example, when the operating frequency band corresponding to the second feeding element 120 is higher than the operating frequency band corresponding to the first feeding element 120 (i.e., the second feeding element 120 plays a main role and designates an antenna as a second antenna corresponding to the second feeding element 120), and the first radiator 210 is located below the second radiator 220 (i.e., the second break is located above the first break), the second feeding element 120 is conducted with the first end of the third radiator 230 (i.e., the end, far from the second break, of the third radiator 230), and the first feeding element 110 is conducted with the first radiator 210.

When the operating frequency band corresponding to the second feeding component 120 is higher than the operating frequency band corresponding to the first feeding component 120 (i.e., the second feeding component 120 plays a main role and designates the antenna as a second antenna corresponding to the second feeding component 120), and the second radiator 220 is located below the first radiator 210 (i.e., the first break is located above the second break), the second feeding component 120 is conducted with the second end of the third radiator 230 (i.e., with the end, far from the first break, of the third radiator 230), and the first feeding component 110 is conducted with the second radiator 220.

Alternatively, the first radiator 210 and the second radiator 220 may be a part of a middle frame of the mobile terminal.

Alternatively, the antenna device provided in the embodiment of the present application may have a symmetrical structure. The first radiator 210 and the second radiator 230 may be symmetrically disposed on the frame of the mobile terminal.

Meanwhile, the antenna device provided by the embodiment of the present application may further include a plurality of tuning circuits, where the tuning circuits may be connected to different positions of the first radiator 210, the second radiator 220, and the third radiator 230. As shown in fig. 3, the antenna device may include a first tuning circuit 510, a second tuning circuit 520, a third tuning circuit 530, a fourth tuning circuit 540, a fifth tuning circuit 550, a sixth tuning circuit 560, a seventh tuning circuit 570, and an eighth tuning circuit 580. A first end of the first tuning circuit 510 may be connected to the second end of the first switching part 310, and a second end of the first tuning circuit 510 may be connected to the first radiator 210. A first end of the second tuning circuit 520 may be connected to the third end of the first switching part 310, and a second end of the second tuning circuit 520 may be connected to the second radiator 220. A first end of the third tuning circuit 530 may be connected to the second end of the second switching part 320, and a second end of the third tuning circuit 530 may be connected to the first radiator 210. A first end of the fourth tuning circuit 540 may be connected to the third end of the second switching part 320, and a second end of the fourth tuning circuit 540 may be connected to the second radiator 220. A first end of the fifth tuning circuit 550 may be connected to the third radiator 230, and a second end of the fifth tuning circuit 550 may be grounded. A first end of the sixth tuning circuit 560 may be connected to the third radiator 230, and a second end of the sixth tuning circuit 560 may be grounded. A first end of the seventh tuning circuit 570 may be connected to the first radiator 210, and a second end of the seventh tuning circuit 570 may be grounded. A first end of the eighth tuning circuit 580 may be connected to the second radiator 220, and a second end of the eighth tuning circuit 500 may be grounded. The positions of the connection points of the same radiator and the plurality of tuning circuits are different. The specific number of the tuning circuits is not limited herein, and the tuning circuits are all used to make the antenna device in a better working state.

The mobile terminal may include wireless communication circuitry, storage and processing circuitry, input-output circuitry, and input-output devices. The wireless communication circuitry may also include an antenna device and a wireless connection transceiver.

It should be noted that the mobile terminal may also include other functional modules or circuitry, which is only a portion of all the functional modules, circuitry, and devices of the mobile terminal.

The foregoing embodiments of the present application mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in view of brevity of line text, no further description is provided herein.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An antenna device, characterized in that the antenna device comprises a first feeding part, a second feeding part and a radiator; the working frequency bands of the first power feeding component and the second power feeding component are different;

The first feeding component is conducted with one radiator of the first radiator, the second radiator and the third radiator, and the second feeding component is conducted with the other radiator of the first radiator, the second radiator and the third radiator, so that the performance of a designated antenna in a first antenna corresponding to the first feeding component and a second antenna corresponding to the second feeding component is better; the first antenna corresponding to the first feed component is an antenna comprising the first feed component and a radiator communicated with the first feed component; the second antenna corresponding to the second feeding component is an antenna comprising the second feeding component and a radiator communicated with the feeding component.

2. The antenna device of claim 1, further comprising a first switching component and a second switching component;

The first end of the first switch component is connected with the first feed component, the second end of the first switch component is connected with the first radiator, and the third end of the first switch component is connected with the second radiator;

The first end of the second switch component is connected with the second feed component, the second end of the second switch component is connected with the first radiator, and the third end of the second switch component is connected with the second radiator;

under the condition that a first preset condition is met, the first feed component is conducted with a first target radiator, and the second feed component is conducted with a second target radiator;

Under the condition that a second preset condition is met, the first power feeding component is conducted with the second target radiator, and the second power feeding component is conducted with the first target radiator;

3. The antenna device according to claim 2, further comprising a voltage detector, a first end of the voltage detector being connected to the first feed member, a second end of the voltage detector being connected to the first end of the first switch member;

wherein the first preset condition includes at least one of: the change value of the input and output voltage detected by the voltage detector is smaller than a threshold value; the antenna device is in an initial state;

the second preset condition includes: the change value of the input and output voltage detected by the voltage detector is larger than or equal to a threshold value.

4. The antenna device of claim 1, further comprising a first switching component and a second switching component;

The first end of the second switch component is connected with the second feed component, the second end of the second switch component is connected with the third radiator, and the third end of the second switch component is connected with the third radiator;

The third radiator is disposed between the first radiator and the second radiator, the third radiator having a first end proximate the first radiator and a second end proximate the second radiator;

the first feeding component is conducted with the first radiator, and the second feeding component is conducted with the first end of the third radiator when a first target condition is met;

and when a second target condition is met, the first feeding component is conducted with the second radiator, and the second feeding component is conducted with the second end of the third radiator.

5. The antenna device according to claim 4, wherein,

The antenna device further comprises a voltage detector, a first end of the voltage detector is connected with the first feed component, and a second end of the voltage detector is connected with the first end of the first switch component;

Wherein the first target condition includes at least one of: the change value of the input and output voltage detected by the voltage detector is smaller than a threshold value; the antenna device is in an initial state;

the second target condition includes: the change value of the input and output voltage detected by the voltage detector is larger than or equal to a threshold value.

6. A mobile terminal, characterized in that it comprises an antenna arrangement according to any of claims 1-5.

7. The mobile terminal of claim 6, wherein the first radiator, the second radiator, and the third radiator are disposed on a frame of the mobile terminal, the frame including a first side, a second side, and a connection side, one end of the connection side being connected to the first side, the other end of the connection side being connected to the second side;

the first radiator has a first portion on the first side and a second portion on the connecting side; the second radiator has a first portion on the second side and a second portion on the connecting side; the third radiator is located at the connecting edge.

8. The mobile terminal of claim 7, wherein the mobile terminal comprises a mobile terminal,

The antenna device comprises a first switch component and a second switch component, wherein a first end of the first switch component is connected with the first feed component, a second end of the first switch component is connected with the first radiator, and a third end of the first switch component is connected with the second radiator; the first end of the second switch component is connected with the second feed component, the second end of the second switch component is connected with the first radiator, and when the third end of the second switch component is connected with the second radiator,

The second end of the first switch component is connected with the first part or the second part of the first radiator, and the third end of the first switch component is connected with the first part or the second part of the second radiator; the second end of the second switch component is connected with the second part of the first radiator, and the third end of the second switch component is connected with the second part of the second radiator;

The working frequency band of the second feeding component is higher than that of the first feeding component.

9. The mobile terminal of claim 8, wherein the first feeding member is in communication with a first target radiator and the second feeding member is in communication with a second target radiator if a first preset condition is met; under the condition that a second preset condition is met, the first power feeding component is conducted with the second target radiator, and the second power feeding component is conducted with the first target radiator; wherein the first target radiator is one of the first radiator and the second radiator, and the second target radiator is the other of the first radiator and the second radiator;

Wherein the first preset condition includes: when the mobile terminal is held in a horizontal screen state, the height of the second side edge where the first part of the second radiator is located is larger than the height of the first side edge where the first part of the first radiator is located;

the second preset condition includes: and when the mobile terminal is held in a horizontal screen state, the height of the first side edge where the first part of the first radiator is located is larger than the height of the second side edge where the first part of the second radiator is located.

10. The mobile terminal of claim 7, wherein the mobile terminal comprises a mobile terminal,

The antenna device comprises a first switch component and a second switch component, wherein a first end of the first switch component is connected with the first feed component, a second end of the first switch component is connected with the first radiator, and a third end of the first switch component is connected with the second radiator; the first end of the second switch component is connected with the second feed component, the second end of the second switch component is connected with the third radiator, and under the condition that the third end of the second switch component is connected with the third radiator,

The second end of the first switch component is connected with the first part or the second part of the first radiator, and the third end of the first switch component is connected with the first part or the second part of the second radiator;

11. The mobile terminal of claim 10, wherein the third radiator is disposed between the first radiator and the second radiator, the third radiator having a first end proximate the first radiator and a second end proximate the second radiator; the first feeding component is conducted with the first radiator, and the second feeding component is conducted with the first end of the third radiator when a first target condition is met; in the case that a second target condition is satisfied, the first feeding part is conducted with the second radiator, and the second feeding part is conducted with a second end of the third radiator;